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Effect of pre-incubation and incubation conditions on hatchability, hatch time and hatch window, and effect of post-hatch handling on chick quality at placement

Published online by Cambridge University Press:  28 June 2013

H. BERGOUG
Affiliation:
Anses/Unit of Epidemiology and Welfare in Poultry and Rabbit farming, BP 53 Ploufragan, 22440 France
C. BUREL
Affiliation:
Anses/Unit of Epidemiology and Welfare in Poultry and Rabbit farming, BP 53 Ploufragan, 22440 France
M. GUINEBRETIÈRE*
Affiliation:
Anses/Unit of Epidemiology and Welfare in Poultry and Rabbit farming, BP 53 Ploufragan, 22440 France
Q. TONG
Affiliation:
Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield AL9 7TA Hertfordshire, United Kingdom
N. ROULSTON
Affiliation:
Petersime NV Entrumstraat 125 9870 Zulte (Olsene), Belgium
C.E.B. ROMANINI
Affiliation:
Division M3-BIORES, KU Leuven, Kasteelpark Arenberg 30 - box 2456, 3001 Heverlee, Belgium
V. EXADAKTYLOS
Affiliation:
Division M3-BIORES, KU Leuven, Kasteelpark Arenberg 30 - box 2456, 3001 Heverlee, Belgium
I.M. MCGONNELL
Affiliation:
Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield AL9 7TA Hertfordshire, United Kingdom
T.G.M. DEMMERS
Affiliation:
Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield AL9 7TA Hertfordshire, United Kingdom
R. VERHELST
Affiliation:
Petersime NV Entrumstraat 125 9870 Zulte (Olsene), Belgium
C. BAHR
Affiliation:
Division M3-BIORES, KU Leuven, Kasteelpark Arenberg 30 - box 2456, 3001 Heverlee, Belgium
D. BERCKMANS
Affiliation:
Division M3-BIORES, KU Leuven, Kasteelpark Arenberg 30 - box 2456, 3001 Heverlee, Belgium
N. ETERRADOSSI
Affiliation:
Anses/Unit of Epidemiology and Welfare in Poultry and Rabbit farming, BP 53 Ploufragan, 22440 France
*
Corresponding author: [email protected]
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Abstract

The zootechnical performances of broilers at the end of the rearing period depend in part on the quality of day-old chicks at placement. The quality of day-old chicks is highly affected by the incubation conditions, by hatch time (which determines the time spent in the hatcher under high temperature and humidity), and by the handling of chicks after hatch. This article first presents an overview of the most relevant pre-incubation factors that affect chick quality: egg size, egg weight, quality of eggs, sex of embryos, age of breeders, and conditions and duration of egg storage. It then reviews the most important incubation factors that affect hatch time, hatchability and hatch window (temperature, humidity, turning, ventilation and concentration of gases). Finally, the effect of early post-hatch handling (including processing and especially transportation of chicks) as a possible source of stress influencing the quality of chicks at placement is discussed.

Type
Review Article
Copyright
Copyright © World's Poultry Science Association 2013

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References

ABIOLA, S.S., MESHIOYE, O.O., OYERINDE, B.O. and BAMGBOSE, M.A. (2008) Effect of egg size on hatchability of broiler chicks. Archivos de Zootecnia 57: 83-86.Google Scholar
AL-AQIL, A., ZULKIFLI, I., SAZILI, A.Q., OMAR, A.R. and RAJION, M.A. (2009) The effects of the hot, humid tropical climate and early age feed restriction on stress and fear responses, and performance in broiler chickens. Asian-Australasian Journal of Animal Sciences 22: 1581-1586.CrossRefGoogle Scholar
ALMEIDA, J.G., VIEIRA, S.L., GALLO, B.B., CONDE, O.R.A. and OLMOS, A.R. (2006) Period of incubation and posthatching holding time influence on broiler performance. Revista Brasileira de Ciência Avícola 8: 153-158.CrossRefGoogle Scholar
ALMEIDA, J.G., VIEIRA, S.L., REIS, R.N., BERRES, J., BARROS, R., FERREIRA, A.K. and FURTADO, F.V.F. (2008) Hatching distribution and embryo mortality of eggs laid by broiler breeders of different ages. Revista Brasileira de Ciência Avícola 10: 89-96.CrossRefGoogle Scholar
ANDE, T.B. and WILSON, H.R. (1981) Hatchability of chicken embryos exposed to acute high temperature stress at various ages. Poultry Science 60: 1561-1566.CrossRefGoogle Scholar
ARJONA, A.A., DENBOW, D.M. and JRWEAVER, W.D. (1990) Neonatally-induced thermotolerance: Physiological responses. Comparative Biochemistry and Physiology Part A: Physiology 95: 393-399.CrossRefGoogle ScholarPubMed
BAIÃO, N.C. and CANÇADO, S.V. (1998) Effect of holding time between hatching and housing on broiler performance. Arquivo Brasileiro De Medicina Veterinaria E Zootecnia 50: 191-194.Google Scholar
BARBOSA, V.M., CANÇADO, S.V., BAIAO, N.C., LANA, A.M.Q., LARA, L.J.C. and SOUZA, M.R. (2008) Effects of relative air humidity in the hatchery and breeder hen age on the incubation yield. Arquivo Brasileiro de Medicina Veterinária e Zootecnia 60: 741-748.CrossRefGoogle Scholar
BARRI, A., HONAKER, C.F., SOTTOSANTI, J.R., HULET, R.M. and MCELROY, A.P. (2011) Effect of incubation temperature on nutrient transporters and small intestine morphology of broiler chickens. Poultry Science 90: 118-125.CrossRefGoogle ScholarPubMed
BIGOT, K., MIGNON-GRASTEAU, S., PICARD, M. and TESSERAUD, S. (2003) Effects of delayed feed intake on body, intestine, and muscle development in neonate broilers. Poultry Science 82: 781-788.CrossRefGoogle ScholarPubMed
BIGOT, K., TESSERAUD, S., TAOUIS, M. and PICARD, M. (2001) Alimentation néonatale et développement précoce du poulet de chair. INRA Productions Animales 14: 219-230.CrossRefGoogle Scholar
BOA-AMPONSEM, K., PRICE, S., DUNNINGTON, E. and SIEGEL, P. (2001) Effect of route of inoculation on humoral immune response of White Leghorn chickens selected for high or low antibody response to sheep red blood cells. Poultry Science 80: 1073-1078.CrossRefGoogle ScholarPubMed
BOERJAN, M. (2001) CO2 controlled setting and hatching: benefits and drawbacks. World Poultry 17: 19-20.Google Scholar
BOHREN, B.B., CRITTENDEN, L.B. and KING, R.T. (1961) Hatching time and hatchability in the fowl. Poultry Science 40: 620-633.CrossRefGoogle Scholar
BRAKE, J., WALSH, T., Jr.BENTON, C., PETITTE, J., MEIJERHOF, R. and PENALVA, G. (1997) Egg handling and storage. Poultry Science 76: 144-151.CrossRefGoogle ScholarPubMed
BRIAN, H. (2000) Incubation, the physical requirements. International Hatchery Practice 14: 25.Google Scholar
BROOM, D.M. (1990) Effects of handling and transport on laying hens. World's Poultry Science Journal 46: 48-50.CrossRefGoogle Scholar
BRUGGEMAN, V., DE SMIT, L., TONA, K., EVERAERT, N., WITTERS, A., DEBONNE, M., DEGRAEVE, P., GARAIN, P. and DECUYPERE, E. (2006) Changes in albumen pH due to higher CO2 concentrations during the first ten days of incubation. 12th European Poultry Conference, Verona, Italy, 260.Google Scholar
BRUGGEMAN, V., WITTERS, A., DE SMIT, L., DEBONNE, M., EVERAERT, N., KAMERS, B., ONAGBESAN, O.M., DEGRAEVE, P. and DECUYPERE, E. (2007) Acid-base balance in chicken embryos (Gallus domesticus) incubated under high CO2 concentrations during the first 10 days of incubation. Respiratory Physiology and Neurobiology 159: 147-154.CrossRefGoogle ScholarPubMed
BRUZUAL, J., PEAK, S., BRAKE, J. and PEEBLES, E. (2000) Effects of relative humidity during the last five days of incubation and brooding temperature on performance of broiler chicks from young broiler breeders. Poultry Science 79: 1385-1391.CrossRefGoogle ScholarPubMed
BURKE, W.H. (1992) Sex differences in incubation length and hatching weights of broiler chicks. Poultry Science 71: 1933-1938.CrossRefGoogle ScholarPubMed
BURTON, F.G. and TULLETT, S.G. (1985) The effects of egg weight and shell porosity on the growth and water balance of the chicken embryo. Comparative Biochemistry and Physiology Part A: Physiology 81: 377-385.CrossRefGoogle Scholar
BUTCHER, G.D. and NILIPOUR, A.H. (2009) Management of hatching eggs and broiler performance. In: Institute of Food and Agricultural Sciences Extension, http://edis.ifas.ufl.edu/vm095.Google Scholar
CANTOR, A.H. and SCOTT, M.L. (1974) The effect of selenium in the hen's diet on egg production, hatchability, performance of progeny and selenium concentration in eggs. Poultry Science 53: 1870-1880.CrossRefGoogle ScholarPubMed
CAREGHI, C., TONA, K., ONAGBESAN, O., BUYSE, J., DECUYPERE, E. and BRUGGEMAN, V. (2005) The effects of the spread of hatch and interaction with delayed feed access after hatch on broiler performance until seven days of age. Poultry Science 84: 1314-1320.CrossRefGoogle ScholarPubMed
CASTEEL, E.T., WILSON, J.L., BUHR, R.J. and SANDER, J.E. (1994) The influence of extended posthatch holding time and placement density on broiler performance. Poultry Science 73: 1679-1684.CrossRefGoogle ScholarPubMed
CHLOUPEK, P., VOSLÁŘOVÁ, E., CHLOUPEK, J., BEDÁŇOVÁ, I., PIŠTĚKOVÁ, V. and VEČEREK, V. (2009) Stress in broiler chickens due to acute noise exposure. Acta Veterinaria Brno 78: 93-98.CrossRefGoogle Scholar
CHOU, C.C., JIANG, D.D. and HUNG, Y.P. (2004) Risk factors for cumulative mortality in broiler chicken flocks in the first week of life in Taiwan. British Poultry Science 45: 573-577.CrossRefGoogle ScholarPubMed
CHRISTENSEN, V., WINELAND, M., FASENKO, G. and DONALDSON, W. (2002) Egg storage alters weight of supply and demand organs of broiler chicken embryos. Poultry Science 81: 1738-1743.CrossRefGoogle ScholarPubMed
COUNCIL OF THE EUROPEAN UNION, (2005) Council Regulation (EC) No 1/2005 of 22 December 2004 on the protection of animals during transport and related operations and amending Directives 64/432/EEC and 93/119/EC and Regulation (EC) No 1255/97. Official Journal of the European Union. Brussels, Belgium L3/1-44.Google Scholar
CRESPO, R. and SHIVAPRASAD, H.L. (2003) Developmental, metabolic, and other noninfectious disorders, in: SAIF, Y.M. (Ed) Diseases of poultry, pp. 1055-1102 (Ames, Iowa State Press).Google Scholar
CRITTENDEN, L.B. and BOHREN, B.B. (1961) The genetic and environmental effects of hatching time, egg weight and holding time on hatchability. Poultry Science 40: 1736-1750.CrossRefGoogle Scholar
CROWTHER, C., DAVIES, R. and GLASS, W. (2003) The effect of night transportation on the heart rate and skin temperature of ostriches during real transportation. Meat Science 64: 365-370.CrossRefGoogle ScholarPubMed
DAWSON, W.R. (1982) Evaporative losses of water by birds. Comparative Biochemistry and Physiology Part A: Physiology 71: 495-509.CrossRefGoogle ScholarPubMed
DE SMIT, L., BRUGGEMAN, V., TONA, J.K., DEBONNE, M., ONAGBESAN, O., ARCKENS, L., DE BAERDEMAEKER, J. and DECUYPERE, E. (2006) Embryonic developmental plasticity of the chick: Increased CO2 during early stages of incubation changes the developmental trajectories during prenatal and postnatal growth. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 145: 166-175.CrossRefGoogle ScholarPubMed
DECUYPERE, E. (1984) Incubation temperature in relation to postnatal performance in chickens. Archiv für Experimentelle Veterinärmedizin 38: 439-449.Google ScholarPubMed
DECUYPERE, E. and MICHELS, H. (1992) Incubation temperature as a management tool: a review. World's Poultry Science Journal 48: 28-38.CrossRefGoogle Scholar
DECUYPERE, E., ONAGBESAN, O., DE SMIT, L., TONA, K., EVERAERT, N., WITTERS, A., DEBONNE, M., VERHOELST, E., BUYSE, J., HASSANZADEH, M., DE BAERDEMAEKER, J., ARCKENS, L. and BRUGGEMAN, V. (2006) Hypoxia and hypercapnia during incubation of chicken eggs : effects on development and subsequent performance. 12th European Poultry Conference, Verona, Italy, pp05.Google Scholar
DECUYPERE, E., TONA, K., BRUGGEMAN, V. and BAMELIS, F. (2001) The day-old chick: a crucial hinge between breeders and broilers. World's Poultry Science Journal 57: 127-138.CrossRefGoogle Scholar
DEEMING, D.C. (2005) Yolk sac, body dimensions and hatchling quality of ducklings, chicks and poults. British Poultry Science 46: 560-564.CrossRefGoogle ScholarPubMed
DELEZIE, E., SWENNEN, Q., BUYSE, J. and DECUYPERE, E. (2007) The effect of feed withdrawal and crating density in transit on metabolism and meat quality of broilers at slaughter weight. Poultry Science 86: 1414-1423.CrossRefGoogle ScholarPubMed
DIBNER, J.J., KNIGHT, C.D., KITCHELL, M.L., ATWELL, C.A., DOWNS, A.C. and IVEY, F.J. (1998) Early feeding and development of the immune system in neonatal poultry. Journal of Applied Poultry Research 7: 425-436.CrossRefGoogle Scholar
EFSA PANEL ON ANIMAL HEALTH AND WELFARE (AHAW), (2011) Scientific Opinion concerning the welfare of animals during transport. EFSA Journal 9: 125.CrossRefGoogle Scholar
ELIBOL, O. and BRAKE, J. (2008a) Effect of egg position during three and fourteen days of storage and turning frequency during subsequent incubation on hatchability of broiler hatching eggs. Poultry Science 87: 1237-1241.CrossRefGoogle ScholarPubMed
ELIBOL, O. and BRAKE, J. (2008b) Effect of egg weight and position relative to incubator fan on broiler hatchability and chick quality. Poultry Science 87: 1913-1918.CrossRefGoogle ScholarPubMed
ELIBOL, O., HODGETTS, B. and BRAKE, J. (2002a) The effect of storage and pre-warming periods on hatch time and hatchability. Poultry and Avian Biology Reviews 13: 243-244.Google Scholar
ELIBOL, O., PEAK, S. and BRAKE, J. (2002b) Effect of flock age, length of egg storage, and frequency of turning during storage on hatchability of broiler hatching eggs. Poultry Science 81: 945-950.CrossRefGoogle ScholarPubMed
EUROPEAN FOOD SAFETY AUTHORITY, (2004) Opinion of the Scientific Panel on Animal Health and Welfare on a request from the Commission related to the welfare of animals during transport. EFSA Journal 44: 36.Google Scholar
EVERAERT, N., KAMERS, B., WITTERS, A., DE SMIT, L., DEBONNE, M., DECUYPERE, E. and BRUGGEMAN, V. (2007) Effect of four percent carbon dioxide during the second half of incubation on embryonic development, hatching parameters, and posthatch growth. Poultry Science 86: 1372-1379.CrossRefGoogle ScholarPubMed
FANGUY, R.C., MISRA, L.K. and VO, K.V. (1980) Effect of delayed placement on growth performance of commercial broilers. Poultry Science 59: 1215-1220.CrossRefGoogle Scholar
FAO, (2010) Agribusiness handbook: Poultry meat and eggs.(Rome, Food and Agriculture Organization of the United Nations).Google Scholar
FAOSTAT, (2011) Chicken meat production. Food and Agriculture Organization of the United Nations, Online Database Acced on 22/12/2010,Google Scholar
FISHER, C. (1998) Lysine: Amino acid requirements of broiler breeders. Poultry Science 77: 124-133.CrossRefGoogle ScholarPubMed
FISHER, C. and KEMP, C. (2000) Impact of breeder nutrition on broiler performance. International Hatchery Practice 15: 13-15.Google Scholar
FLINCHUM, J.D., NOCKLES, C.F. and MORENG, R.F. (1989) Aged hens fed added zinc methionine had chicks with improved performance. Poultry Science 68: 55.Google Scholar
FRENCH, N. (1997) Modeling incubation temperature: the effects of incubator design, embryonic development, and egg size. Poultry Science 76: 124-133.CrossRefGoogle ScholarPubMed
GARCIA, D.B., SILVA, I.J.O., BARBOSA FILHO, J.A.D., VIEIRA, F.M.C. and DIAS, C.T.S. (2008) Evaluation of the effect of vibration in simulated condition of transport of broiler chickens. 37th Brazilian Congress of Agricultural Engineering, International Livestock Environment Symposium - ILES VIII, 31st August to 4th September, 2008. Iguassu Falls City, Brazil. pp. unpaginated.Google Scholar
GEYRA, A., UNI, Z. and SKLAN, D. (2001a) The effect of fasting at different ages on growth and tissue dynamics in the small intestine of the young chick. British Journal of Nutrition 86: 53-61.CrossRefGoogle ScholarPubMed
GEYRA, A., UNI, Z. and SKLAN, D. (2001b) Enterocyte dynamics and mucosal development in the posthatch chick. Poultry Science 80: 776-782.CrossRefGoogle ScholarPubMed
GHAREEB, K. and BÖHM, J. (2009) Stress indicators to pre-slaughter transportation of broiler chickens fed diets supplemented with a synbiotic. International Journal of Poultry Science 8: 621-625.CrossRefGoogle Scholar
GREGORY, N.G. (2008) Animal welfare at markets and during transport and slaughter. Meat Science 80: 2-11.CrossRefGoogle ScholarPubMed
GUMUŁKA, M. and KAPKOWSKA, E. (2005) Age effect of broiler breeders on fertility and sperm penetration of the perivitelline layer of the ovum. Animal Reproduction Science 90: 135-148.CrossRefGoogle ScholarPubMed
HAGER, J.E. and BEANE, W.L. (1983) Posthatch incubation-time and early growth of broiler-chickens. Poultry Science 62: 247-254.CrossRefGoogle ScholarPubMed
HAGGER, C., STEIGER-STAFL, D. and MARGUERAT, C. (1986) Embryonic mortality in chicken eggs as influenced by egg weight and inbreeding. Poultry Science 65: 812-814.CrossRefGoogle Scholar
HALEVY, O., GEYRA, A., BARAK, M., UNI, Z. and SKLAN, D. (2000) Early posthatch starvation decreases satellite cell proliferation and skeletal muscle growth in chicks. Journal of Nutrition 130: 858-864.CrossRefGoogle ScholarPubMed
HAMDY, A.M.M., HEL, W.V.D., HENKEN, A.M., GALAL, A.G. and ABD-ELMOTY, A.K.I. (1991) Effects of air humidity during incubation and age after hatch on heat tolerance of neonatal male and female chicks. Poultry Science 70: 1499-1506.CrossRefGoogle ScholarPubMed
HAQ, A.-U., BAILEY, C.A. and CHINNAH, A. (1996) Effect of β-carotene, canthaxanthin, lutein, and vitamin E on neonatal immunity of chicks when supplemented in the broiler breeder diets. Poultry Science 75: 1092-1097.CrossRefGoogle ScholarPubMed
HAVENSTEIN, G.B., FERKET, P.R. and QURESHI, M.A. (2003) Carcass composition and yield of 1957 versus 2001 broilers when fed representative 1957 and 2001 broiler diets. Poultry Science 82: 1509-1518.CrossRefGoogle ScholarPubMed
HIEBERT, S.M. and NOVERAL, J. (2007) Are chicken embryos endotherms or ectotherms? A laboratory exercise integrating concepts in thermoregulation and metabolism. Advances in Physiology Education 31: 97-109.CrossRefGoogle ScholarPubMed
HILL, D. (2002) Chick length uniformity profiles as a field measurement of chick quality. International Hatchery Practice 16:Google Scholar
HOGG, A. (1997) Single stage incubation trials. Poultry and Avian Biology Reviews 8: 168.Google Scholar
HOOGERBRUGGE, A. and ORMEL, H.J. (1982) Transport of day old chicks by air. Current Topics in Veterinary Medicine and Animal Science 18: 139-146.Google Scholar
HOSSAIN, S.M., BARRETO, S.L., BERTECHINI, A.G., RIOS, A.M. and SILVA, C.G. (1998) Influence of dietary Vitamin E level on egg production of broiler breeders, and on the growth and immune response of progeny in comparison with the progeny from eggs injected with Vitamin E. Animal Feed Science and Technology 73: 307-317.CrossRefGoogle Scholar
HUDSON, B.P., DOZIER, W.A., III, , FAIRCHILD, B.D., WILSON, J.L., SANDER, J.E. and WARD, T.L. (2004) Live performance and immune responses of straight-run broilers: influences of zinc source in broiler breeder hen and progeny diets and ambient temperature during the broiler production period. Journal of Applied Poultry Research 13: 291-301.CrossRefGoogle Scholar
HULET, R., GLADYS, G., HILL, D., MEIJERHOF, R. and EL-SHIEKH, T. (2007) Influence of egg shell embryonic incubation temperature and broiler breeder flock age on posthatch growth performance and carcass characteristics. Poultry Science 86: 408-412.CrossRefGoogle ScholarPubMed
HUNTER, R.R., MITCHELL, M.A. and CARLISLE, A.J. (1999) Wetting of broilers during cold weather transport : a major source of physiological stress? British Poultry Science 40: S48-S49.CrossRefGoogle Scholar
ICHINOE, K. (1973) The relationship between hatching time and sex-ratio in chicks. Poultry Science 52: 1584-1592.CrossRefGoogle ScholarPubMed
KIDD, M.T. (2003) A treatise on chicken dam nutrition that impacts on progeny. World's Poultry Science Journal 59: 475-494.CrossRefGoogle Scholar
KIDD, M.T., ANTHONY, N.B. and LEE, S.R. (1992) Progeny performance when dams and chicks are fed supplemental zinc. Poultry Science 71: 1201-1206.CrossRefGoogle ScholarPubMed
KIDD, M.T., ANTHONY, N.B., NEWBERRY, L.A. and LEE, S.R. (1993) Effect of supplemental zinc in either a corn-soybean or a milo and corn-soybean meal diet on the performance of young broiler breeders and their progeny. Poultry Science 72: 1492-1499.CrossRefGoogle Scholar
KIDD, M.T., MCDANIEL, C.D., PEEBLES, E.D., BARBER, S.J., CORZO, A., BRANTON, S.L. and WOODWORTH, J.C. (2005) Breeder hen dietary L-carnitine affects progeny carcase traits. British Poultry Science 46: 97-103.CrossRefGoogle ScholarPubMed
KIRK, S., EMMANS, G.C., MCDONALD, R. and ARNOT, D. (1980) Factors affecting the hatchability of eggs from broiler breeders. British Poultry Science 21: 37-53.CrossRefGoogle Scholar
KUMPULA, B.L. and FASENKO, G.M. (2005) Comparing incubation duration, hatchability, and chick quality parameters of chicks from three egg sizes and two modern strains. Poultry and Avian Biology Reviews 16: 57-58.Google Scholar
LAPÃO, C., GAMA, L.T. and SOARES, M.C. (1999) Effects of broiler breeder age and length of egg storage on albumen characteristics and hatchability. Poultry Science 78: 640-645.CrossRefGoogle ScholarPubMed
LEESON, S. (2004) Future challenges in poultry meat production, in: TUCKER, L.A. & TAYLOR-PICKARD, J.A. (Eds) Interfacing immunity, gut health and performance, pp. 1-7 (Nottingham, UK, Nottingham University Press).Google Scholar
LEESON, S. and SUMMERS, J.D. (2000) Broiler breeder production.(Thrumpton, Nottingham, Nottingham University Press).Google Scholar
LEKSRISOMPONG, N., ROMERO-SANCHEZ, H., PLUMSTEAD, P.W., BRANNAN, K.E. and BRAKE, J. (2007) Broiler incubation: 1. Effect of elevated temperature during late incubation on body weight and organs of chicks. Poultry Science 86: 2685-2691.CrossRefGoogle ScholarPubMed
LIN, H., ZHANG, H., JIAO, H., ZHAO, T., SUI, S., GU, X., ZHANG, Z., BUYSE, J. and DECUYPERE, E. (2005) Thermoregulation responses of broiler chickens to humidity at different ambient temperatures. I. One week of age. Poultry Science 84: 1166-1172.CrossRefGoogle ScholarPubMed
LINE, J. (2006) Influence of relative humidity on transmission of Campylobacter jejuni in broiler chickens. Poultry Science 85: 1145-1150.CrossRefGoogle ScholarPubMed
LOPEZ, G. and LEESON, S. (1995a) Response of broiler breeders to low-protein diets: 1. Adult breeder performance. Poultry Science 74: 685-695.CrossRefGoogle ScholarPubMed
LOPEZ, G. and LEESON, S. (1995b) Response of broiler breeders to low-protein diets: 2. Offspring performance. Poultry Science 74: 696-701.CrossRefGoogle ScholarPubMed
LOURENS, A., VAN DEN BRAND, H., MEIJERHOF, R. and KEMP, B. (2005) Effect of eggshell temperature during incubation on embryo development, hatchability, and posthatch development. Poultry Science 84: 914-920.CrossRefGoogle ScholarPubMed
LOURENS, S. (2003) Residual yolk and egg weight loss during incubation under controlled eggshell temperatures. Avian and Poultry Biology Reviews: Incubation and fertility research group meeting, WPSA Working Group 6 (reproduction), University of Lincoln, UK, 4-5 September 2003 14: : 209-211.Google Scholar
LUNDY, H. (1969) A review of the effects of temperature, humidity, turning and gaseous environment in the incubator on hatchability of hen's eggs, in: CARTER, T.C. & FREEMAN, B.M. (Eds) The Fertility and Hatchability of the Hen's Egg, pp. 143-176 (Edinburgh, Scotland, UK, Oliver and Boyd).Google Scholar
MACCALUIM, J.M., ABEYESINGHE, S.M., WHITE, R.P. and WATHES, C.M. (2003) A continuous-choice assessment of the domestic fowl's aversion to concurrent transport stressors. Animal Welfare 12: 95-107.CrossRefGoogle Scholar
MATHER, C.M. and LAUGHLIN, K.F. (1976) Storage of hatching eggs: The effect on total incubation period. British Poultry Science 17: 471-479.CrossRefGoogle Scholar
MEIJERHOF, R. and LOURENS, S. (1999) Embryo temperature is the key factor in incubation. World Poultry 15: 42-43.Google Scholar
MINKA, N.S. and AYO, J.O. (2009) Physiological responses of food animals to road transportation stress. African Journal of Biotechnology 8: 7415-7427.Google Scholar
MISSON, B.H. (1976) The effects of temperature and relative humidity on the thermoregulatory responses of grouped and isolated neonate chicks. Journal of Agricultural Science 86: 35-43.CrossRefGoogle Scholar
MITCHELL, M. and KETTLEWELL, P. (1998) Physiological stress and welfare of broiler chickens in transit: solutions not problems! Poultry Science 77: 1803-1814.CrossRefGoogle Scholar
MITCHELL, M.A. and KETTLEWELL, P.J. (2009) Welfare of poultry during transport - a review. Poultry Welfare Symposium Cervia, Italy,Google Scholar
MITCHELL, M.A., KETTLEWELL, P.J., CARLISLE, A., HUNTER, R.R. and MANNING, T. (1996) Defining the optimum thermal environment for the transportation of 1-d-old chicks: physiological responses during transport simulations. British Poultry Science 37: S89-S90.Google Scholar
MORAN, E.T. (1990) Effects of egg weight, glucose-administration at hatch, and delayed access to feed and water on the poult at 2 weeks of age. Poultry Science 69: 1718-1723.CrossRefGoogle ScholarPubMed
MORGAN, K.N. and TROMBORG, C.T. (2007) Sources of stress in captivity. Applied Animal Behaviour Science 102: 262-302.CrossRefGoogle Scholar
MORITA, V.S., BOLELI, I.C. and CARGNELUTTI, A. (2009) Hematological values and body, heart and liver weights of male and female broiler embryos of young and old breeder eggs. Revista Brasileira de Ciência Avícola 11: 7-15.CrossRefGoogle Scholar
MORITA, V.S., BOLELI, I.C. and DE OLIVEIRA, J.A. (2010) Hematological and incubation parameters of chicks from young breeders eggs: Variation with sex and incubation temperature. International Journal of Poultry Sciences 9: 606-612.CrossRefGoogle Scholar
NIJDAM, E., ARENS, P., LAMBOOIJ, E., DECUYPERE, E. and STEGEMAN, J. (2004) Factors influencing bruises and mortality of broilers during catching, transport, and lairage. Poultry Science 83: 1610-1615.CrossRefGoogle ScholarPubMed
NIR, I. and LEVANON, M. (1993) Effect of posthatch holding time performance and residual yolk and liver composition. Poultry Science 72: 1994-1997.CrossRefGoogle Scholar
NOY, Y. and SKLAN, D. (1997) Posthatch development in poultry. Journal of Applied Poultry Research 6: 344-354.CrossRefGoogle Scholar
NRC, (1994) Nutrient requirements of poultry: 9th Revised edition, 1994.(Washington, D.C., The National Academies Press).Google Scholar
OVIEDO-RONDON, E.O., WINELAND, M.J., SMALL, J., CUTCHIN, H., MCELROY, A., BARRI, A. and MARTIN, S. (2009) Effect of incubation temperatures and chick transportation conditions on bone development and leg health. Journal of Applied Poultry Research 18: 671-678.CrossRefGoogle Scholar
OWEN, J. (1991) Principles and problems of incubator design, in: TULLETT, S.G. (Ed) Avian Incubation, pp. 205-226 (London, Butterworth-Heinemann).Google Scholar
PAPPAS, A., ACAMOVIC, T., SPARKS, N., SURAI, P. and MCDEVITT, R. (2005) Effects of supplementing broiler breeder diets with organic selenium and polyunsaturated fatty acids on egg quality during storage. Poultry Science 84: 865-874.CrossRefGoogle ScholarPubMed
PAPPAS, A.C., ACAMOVIC, T., SPARKS, N.H.C., SURAI, P.F. and MCDEVITT, R.M. (2006a) Effects of liquid aluminum chloride additions to poultry litter on broiler performance, ammonia emissions, soluble phosphorus, total volatile fatty acids, and nitrogen contents of litter. Poultry Science 85: 1584-1593.CrossRefGoogle Scholar
PAPPAS, A.C., ACAMOVIC, T., SURAI, P.F. and MCDEVITT, R.M. (2006b) Maternal organo-selenium compounds and polyunsaturated fatty acids affect progeny performance and levels of selenium and docosahexaenoic acid in the chick tissues. Poultry Science 85: 1610-1620.CrossRefGoogle ScholarPubMed
PEEBLES, E., DOYLE, S., PANSKY, T., GERARD, P., LATOUR, M., BOYLE, C. and SMITH, T. (1999a) Effects of breeder age and dietary fat on subsequent broiler performance. 1. Growth, mortality, and feed conversion. Poultry Science 78: 505-511.CrossRefGoogle ScholarPubMed
PEEBLES, E., DOYLE, S., PANSKY, T., GERARD, P., LATOUR, M., BOYLE, C. and SMITH, T. (1999b) Effects of breeder age and dietary fat on subsequent broiler performance. 2. Slaughter yield. Poultry Science 78: 512-515.CrossRefGoogle ScholarPubMed
PEEBLES, E., ZUMWALT, C., GERARD, P., LATOUR, M. and SMITH, T. (2002a) Market age live weight, carcass yield, and liver characteristics of broiler offspring from breeder hens fed diets differing in fat and energy contents. Poultry Science 81: 23-29.CrossRefGoogle ScholarPubMed
PEEBLES, E.D., KIDD, M.T., MCDANIEL, C.D., TANKSLEY, J.P., PARKER, H.M., CORZO, A. and WOODWORTH, J.C. (2007) Effects of breeder hen age and dietary L-carnitine on progeny embryogenesis. British Poultry Science 48: 299-307.CrossRefGoogle ScholarPubMed
PEEBLES, E.D., ZUMWALT, C.D., SMITH, T.W., GERARD, P.D. and LATOUR, M.A. (2002b) Poultry fat and corn oil may be used to adjust energy in the diets of young breeder hens without affecting embryogenesis and subsequent broiler growout performance. Journal of Applied Poultry Research 11: 146-154.CrossRefGoogle Scholar
PIESTUN, Y., SHINDER, D., RUZAL, M., HALEVY, O., BRAKE, J. and YAHAV, S. (2008a) Thermal Manipulations During Broiler Embryogenesis: Effect on the Acquisition of Thermotolerance. Poultry Science 87: 1516-1525.CrossRefGoogle ScholarPubMed
PIESTUN, Y., SHINDER, D., RUZAL, M., HALEVY, O. and YAHAV, S. (2008b) The effect of thermal manipulations during the development of the thyroid and adrenal axes on in-hatch and post-hatch thermoregulation. Journal of Thermal Biology 33: 413-418.CrossRefGoogle Scholar
POLEY, W.E., WILSON, W.O., MOXON, A.L. and TAYLOR, J.B. (1941) The effect of selenized grains on the rate of growth in chicks. Poultry Science 20: 171-179.CrossRefGoogle Scholar
QURESHI, M., BRAKE, J., HAMILTON, P., HAGLER, W., JR, and NESHEIM, S. (1998) Dietary exposure of broiler breeders to aflatoxin results in immune dysfunction in progeny chicks. Poultry Science 77: 812-819.CrossRefGoogle ScholarPubMed
RAJU, M., CHAWAK, M.M., PRAHARAJ, N.K., RAO, S.V.R. and MISHRA, S.K. (1997) Interrelationships among egg weight, hatchability, chick weight, post-hatch performance and rearing method in broiler breeders. Indian Journal of Animal Sciences 67: 48-50.Google Scholar
RAUP, T.J.B. and BOTTJE, W.G. (1990) Effect of carbonated water on arterial pH, pco2 and plasma lactate in heat-stressed broilers. British Poultry Science 31: 377-384.CrossRefGoogle ScholarPubMed
REIS, L.H., GAMA, L.T. and SOARES, M.C. (1997) Effects of short storage conditions and broiler breeder age on hatchability, hatching time, and chick weights. Poultry Science 76: 1459-1466.CrossRefGoogle ScholarPubMed
ROBERTS, J.R., SOUILLARD, R. and BERTIN, J. (2011) Avian deseases which affect egg production and quality, in: NYS, Y., BAIN, M. & VAN IMMERSEEL, F. (Eds) Improving the safety and quality of eggs and agg products. Volume1: Egg chemistry, production and composition, 1 pp. 376-393 (Cambridge, Woodhead Publishing Limited).Google Scholar
ROBERTSON, I.S. (1961) Studies on the effect of humidity on the hatchability of hen's eggs I. The determination of optimum humidity for incubation. Journal of Agricultural Science 57: 185-194.CrossRefGoogle Scholar
ROSA, P.S., GUIDONI, A.L., LIMA, I.L. and BERSCH, F.X.R. (2002) Effect of incubation temperature on hatching results of broiler breeders eggs classified by weight and hen age. Revista Brasileira de Zootecnia 31: 1011-1016.CrossRefGoogle Scholar
RUIZ, J. and LUNAM, C.A. (2002) Effect of pre-incubation storage conditions on hatchability, chick weight at hatch and hatching time in broiler breeders. British Poultry Science 43: 374-383.CrossRefGoogle ScholarPubMed
SAITO, F. and KITA, K. (2011) Maternal intake of Astaxanthin improved hatchability of fertilized eggs stored at high temperature. Journal of Poultry Science 48: 33-39.CrossRefGoogle Scholar
SCHMIDT, G.S., FIGUEIREDO, E.A.P., SAATKAMP, M.G. and BOMM, E.R. (2009) Effect of storage period and egg weight on embryo development and incubation results. Revista Brasileira de Ciência Avícola 11: 1-5.CrossRefGoogle Scholar
SCOTT, G.B. (1994) Effects of short-term whole body vibration on animals with particular reference to poultry. World's Poultry Science Journal 50: 25-38.CrossRefGoogle Scholar
SHINDER, D., RUSAL, M., GILOH, M. and YAHAV, S. (2009) Effect of repetitive acute cold exposures during the last phase of broiler embryogenesis on cold resistance through the life span. Poultry Science 88: 636-646.CrossRefGoogle ScholarPubMed
SHINDER, D., RUZAL, M., GILOH, M., DRUYAN, S., PIESTUN, Y. and YAHAV, S. (2011) Improvement of cold resistance and performance of broilers by acute cold exposure during late embryogenesis. Poultry Science 90: 633-641.CrossRefGoogle ScholarPubMed
SHIVAZAD, M., BEJAEI, M., TAHERKHANI, R., ZAGHARI, M. and KIAEI, M.M. (2007) Effects of glucose injection and feeding oasis on broiler chick's subsequent performance. Pakistan Journal of Biological Sciences 10: 1860-1864.CrossRefGoogle ScholarPubMed
SILVA, F., FARIA, D., TORRES, K., FARIA FILHO, D., COELHO, A. and SAVINO, V. (2008) Influence of egg pre-storage heating period and storage length on incubation results. Revista Brasileira de Ciência Avícola 10: 17-22.CrossRefGoogle Scholar
SKLAN, D. and NOY, Y. (2000) Hydrolysis and absorption in the small intestines of posthatch chicks. Poultry Science 79: 1306-1310.CrossRefGoogle ScholarPubMed
SKLAN, D., NOY, Y., HOYZMAN, A. and ROZENBOIM, I. (2000) Decreasing weight loss in the hatchery by feeding chicks and poults in hatching trays. Journal of Applied Poultry Research 9: 142-148.CrossRefGoogle Scholar
SMIT, H.F., DWARS, R.M., DAVELAAR, F.G. and WIJTTEN, G.A.W. (1998) Observations on the influence of intestinal spirochaetosis in broiler breeders on the performance of their progeny and on egg production. Avian Pathology 27: 133-141.CrossRefGoogle ScholarPubMed
SPRATT, R.S. and LEESON, S. (1987a) Broiler breeder performance in response to diet protein and energy. Poultry Science 66: 683-693.CrossRefGoogle ScholarPubMed
SPRATT, R.S. and LEESON, S. (1987b) Determination of metabolizable energy of various diets using leghorn, dwarf, and regular broiler breeder hens. Poultry Science 66: 314-317.CrossRefGoogle ScholarPubMed
SPRATT, R.S. and LEESON, S. (1987c) Effect of protein and energy intake of broiler breeder hens on performance of broiler chicken offspring. Poultry Science 66: 1489-1494.CrossRefGoogle ScholarPubMed
STEPHENS, C.P. and HAMPSON, D.J. (2002) Experimental infection of broiler breeder hens with the intestinal spirochaete Brachyspira (Serpulina) pilosicoli causes reduced egg production. Avian Pathology 31: 169-175.CrossRefGoogle ScholarPubMed
SURAI, P.F. (2000) Effect of selenium and vitamin E content of the maternal diet on the antioxidant system of the yolk and the developing chick. British Poultry Science 41: 235-243.CrossRefGoogle ScholarPubMed
SURAI, P.F., NOBLE, R.C. and SPEAKE, B.K. (1999) Relationship between vitamin E content and susceptibility to lipid peroxidation in tissues of the newly hatched chick. British Poultry Science 40: 406-410.CrossRefGoogle ScholarPubMed
TANAKA, A. and XIN, H. (1997) Effects of structural and stacking configuration of containers for transporting chicks in their microenvironment. Transaction of the American Society of Agricultural Engineers 40: 777-782.CrossRefGoogle Scholar
TANURE, C., CAFE, M.B., LEANDRO, N.S.M., BAIAO, N.C., STRINGHINI, J.H. and GOMES, N.A. (2009) Effects of ages of light breeder hens and storage period of hatchable eggs on the incubation efficiency. Arquivo Brasileiro de Medicina Veterinária e Zootecnia 61: 1391-1396.CrossRefGoogle Scholar
TAYLOR, L.W., KREUTZIGE, G.O. and ABERCROMBIE, G.L. (1971) The gaseous environment of the chick embryo in relation to its development and hatchability: 5. Effect of carbon dioxide and oxygen levels during the terminal days of incubation. Poultry Science 50: 66-78.CrossRefGoogle ScholarPubMed
TAYLOR, L.W. and KREUTZIGER, G.O. (1965) The gaseous environment of the chick embryo in relation to its development and hatchability: 2. Effect of carbon dioxide and oxygen levels during the period of the fifth through the eighth days of incubation. Poultry Science 44: 98-106.CrossRefGoogle ScholarPubMed
TAYLOR, L.W. and KREUTZIGER, G.O. (1966) The gaseous environment of the chick embryo in relation to its development and hatchability: 3. Effect of carbon dioxide and oxygen levels during the period of the ninth through the twelfth days of incubation. Poultry Science 45: 867-884.CrossRefGoogle Scholar
TAYLOR, L.W. and KREUTZIGER, G.O. (1969) The gaseous environment of the chick embryo in relation to its development and hatchability: 4. Effect of carbon dioxide and oxygen levels during the period of the thirteenth through the sixteenth days of incubation. Poultry Science 48: 871-877.CrossRefGoogle ScholarPubMed
TAYLOR, L.W., SJODIN, R.A. and GUNNS, C.A. (1956) The gaseous environment of the chick embryo in relation to its development and hatchability: 1. Effect of carbon dioxide and oxygen levels during the first four days of incubation upon hatchability. Poultry Science 35: 1206-1215.CrossRefGoogle Scholar
THOMPSON, J.B., WILSON, H.R. and VOITLE, R.A. (1976) Influence of high temperature stress of 16-day embryos on subsequent hatchability. Poultry Science 55: 892-894.CrossRefGoogle Scholar
TIWARY, A.K. and MAEDA, T. (2005) Effects of egg storage position and injection of solutions in stored eggs on hatchability in chickens (Gallus domesticus). Journal of Poultry Science 42: 356-362.CrossRefGoogle Scholar
TONA, K., BAMELIS, F., COUCKE, W., BRUGGEMAN, V. and DECUYPERE, E. (2001) Relationship between broiler breeder's age and egg weight loss and embryonic mortality during incubation in large-scale conditions. Journal of Applied Poultry Research 10: 221-227.CrossRefGoogle Scholar
TONA, K., BAMELIS, F., DE KETELAERE, B., BRUGGEMAN, V., MORAES, V., BUYSE, J., ONAGBESAN, O. and DECUYPERE, E. (2003) Effects of egg storage time on spread of hatch, chick quality, and chick juvenile growth. Poultry Science 82: 736-741.CrossRefGoogle ScholarPubMed
TONA, K., ONAGBESAN, O., DE KETELAERE, B., DECUYPERE, E. and BRUGGEMAN, V. (2004a) Effects of age of broiler breeders and egg storage on egg quality, hatchability, chick quality, chick weight, and chick posthatch growth to forty-two days. Journal of Applied Poultry Research 13: 10-18.CrossRefGoogle Scholar
TONA, K., ONAGBESAN, O.M., JEGO, Y., KAMERS, B., DECUYPERE, E. and BRUGGEMAN, V. (2004b) Comparison of embryo physiological parameters during incubation, chick quality, and growth performance of three lines of broiler breeders differing in genetic composition and growth rate. Poultry Science 83: 507-513.CrossRefGoogle ScholarPubMed
TONG, Q., MCGONNELL, I.M., ROMANINI, C.E.B., EXADAKTYLOS, V., BERCKMANS, D., BERGOUG, H., GUINEBRETIÈRE, M., ETERRADOSSI, N.R., N., , GARAIN, P. and DEMMERS, T. (2011) Monitoring environmental conditions during incubation of chicken eggs. 15th International Congress on Animal Hygiene, Vienna, Austria., 117-119.Google Scholar
VAN DE VEN, L.J.F., VAN WAGENBERG, A.V., DEBONNE, M., DECUYPERE, E., KEMP, B. and VAN DEN BRAND, H. (2011) Hatching system and time effects on broiler physiology and posthatch growth. Poultry Science 90: 1267-1275.CrossRefGoogle ScholarPubMed
VIEIRA, F.M.C., SILVA, I.J.O., BARBOSA FILHO, J.A.D., VIEIRA, A.M.C. and BROOM, D.M. (2010) Preslaughter mortality of broilers in relation to lairage and season in a subtropical climate. Poultry Science 90: 2127-2133.CrossRefGoogle Scholar
VIEIRA, S., ALMEIDA, J., LIMA, A., CONDE, O. and OLMOS, A. (2005) Hatching distribution of eggs varying in weight and breeder age. Revista Brasileira de Ciência Avícola 7: 73-78.CrossRefGoogle Scholar
VIEIRA, S.L. and MORAN, E.T. (1999) Effects of egg of origin and chick post-hatch nutrition on broiler live performance and meat yields. World's Poultry Science Journal 55: 125-142.CrossRefGoogle Scholar
VIRDEN, W.S., YEATMAN, J.B., BARBER, S.J., ZUMWALT, C.D., WARD, T.L., JOHNSON, A.B. and KIDD, M.T. (2003) Hen mineral nutrition impacts progeny livability. Journal of Applied Poultry Research 12: 411-416.CrossRefGoogle Scholar
VISSCHEDIJK, A.H.J. (1991) Physics and physiology of incubation. British Poultry Science 32: 3-20.CrossRefGoogle ScholarPubMed
VOSMEROVA, P., CHLOUPEK, J., BEDANOVA, I., CHLOUPEK, P., KRUZIKOVA, K., BLAHOVA, J. and VECEREK, V. (2010) Changes in selected biochemical indices related to transport of broilers to slaughterhouse under different ambient temperatures. Poultry Science 89: 2719-2725.CrossRefGoogle ScholarPubMed
WALTER, I. and SEEBACHER, F. (2009) Endothermy in birds: underlying molecular mechanisms. The Journal of Experimental Biology 212: 2328-2336.CrossRefGoogle ScholarPubMed
WARRISS, P.D., BROWN, S.N., KNOWLES, T.G., EDWARDS, J.E. and DUGGAN, J.A. (1997) Potential effect of vibration during transport on glycogen reserves in broiler chickens. The Veterinary Journal 153: 215-219.CrossRefGoogle ScholarPubMed
WHITEHEAD, C.C., PEARSON, R.A. and HERRON, K.M. (1985) Biotin requirements of broiler breeders fed diets of different protein content and effect of insufficient biotin on the viability of progeny. British Poultry Science 26: 73-82.CrossRefGoogle ScholarPubMed
WILLEMSEN, H., DEBONNE, M., SWENNEN, Q., EVERAERT, N., CAREGHI, C., HAN, H., BRUGGEMAN, V., TONA, K. and DECUYPERE, E. (2010a) Delay in feed access and spread of hatch: importance of early nutrition. World's Poultry Science Journal 66: 177-188.CrossRefGoogle Scholar
WILLEMSEN, H., KAMERS, B., DAHLKE, F., HAN, H., SONG, Z., ANSARI PIRSARAEI, Z., TONA, K., DECUYPERE, E. and EVERAERT, N. (2010b) High- and low-temperature manipulation during late incubation: Effects on embryonic development, the hatching process, and metabolism in broilers. Poultry Science 89: 2678-2690.CrossRefGoogle ScholarPubMed
WILSON, H.R. (1991) Interrelationships of egg size, chick size, posthatching growth and hatchability. World's Poultry Science Journal 47: 5-20.CrossRefGoogle Scholar
WOLANSKI, N.J., RENEMA, R.A., ROBINSON, F.E., CARNEY, V.L. and FANCHER, B.I. (2007) Relationships among egg characteristics, chick measurements, and early growth traits in ten broiler breeder strains. Poultry Science 86: 1784-1792.CrossRefGoogle ScholarPubMed
WYATT, C.L., WEAVER, W.D. and BEANE, W.L. (1985) Influence of egg size, egg shell quality, and posthatch holding time on broiler performance. Poultry Science 64: 2049-2055.CrossRefGoogle Scholar
XIN, H. (1997) Mortality and body weight of breeder chicks as influenced by air temperature fluctuations. Journal of Applied Poultry Research 6: 199-204.CrossRefGoogle Scholar
XIN, H. and HARMON, J.D. (1996) Responses of group-housed neonatal chicks to posthatch holding environment. Transactions of the American Society of Agricultural and Biological Engineers 39: 2249-2254.CrossRefGoogle Scholar
XIN, H. and RIEGER, S.R. (1995) Physical conditions and mortalities associated with international air transport of young chicks. Transactions of the American Society of Agricultural and Biological Engineers 38: 1863-1867.CrossRefGoogle Scholar
YAHAV, S. and HURWITZ, S. (1996) Induction of thermotolerance in male broiler chickens by temperature conditioning at an early age. Poultry Science 75: 402-406.CrossRefGoogle ScholarPubMed
YAHAV, S., RATH, R.S. and SHINDER, D. (2004) The effect of thermal manipulations during embryogenesis of broiler chicks (Gallus domesticus) on hatchability, body weight and thermoregulation after hatch. Journal of Thermal Biology 29: 245-250.CrossRefGoogle Scholar
YALÇIN, S., BABACANOĞLU, E., GÜLER, H.C. and AKŞIT, M. (2010) Effects of incubation temperature on hatching and carcass performance of broilers. World's Poultry Science Journal 66: 87-94.CrossRefGoogle Scholar
YASSIN, H., VELTHUIS, A.G.J., BOERJAN, M., VAN RIEL, J. and HUIRNE, R.B.M. (2008) Field study on broiler eggs hatchability. Poultry Science 87: 2408-2417.CrossRefGoogle Scholar
YILDIRIM, I. and YETISIR, R. (2004) Effects of different hatcher temperatures on hatching traits of broiler embryos during the last five days of incubation South African Journal of Animal Science 34: 211-216.Google Scholar