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Slow and steady wins the race? No signs of reduced welfare in smaller broiler breeder hens at four weeks of age

Published online by Cambridge University Press:  01 January 2023

C Lindholm ,
A Calais ,
J Jönsson ,
N Yngwe ,
E Berndtson ,
E Hult  and
J Altimiras
C Lindholm
Affiliation:
AVIAN Behavioural Genomics and Physiology Group, IFM, Linköping University, 581 83 Linköping, Sweden
A Calais
Affiliation:
AVIAN Behavioural Genomics and Physiology Group, IFM, Linköping University, 581 83 Linköping, Sweden
J Jönsson
Affiliation:
AVIAN Behavioural Genomics and Physiology Group, IFM, Linköping University, 581 83 Linköping, Sweden
N Yngwe
Affiliation:
SweHatch AB, 247 47 Flyinge, Sweden
E Berndtson
Affiliation:
SweHatch AB, 247 47 Flyinge, Sweden
E Hult
Affiliation:
SweHatch AB, 247 47 Flyinge, Sweden
J Altimiras*
Affiliation:
AVIAN Behavioural Genomics and Physiology Group, IFM, Linköping University, 581 83 Linköping, Sweden
*
* Contact for correspondence and requests for reprints: [email protected]
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Abstract

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Broiler breeder chickens are commonly reared under strict feed-restriction regimes to reduce obesity-induced health and fertility problems during adult life, and are assumed to experience a reduced welfare due to the resulting hunger. In these conditions, feed competition could influence the growth rate, so that the individuals falling behind in growth would experience more stress and hunger. We hypothesised that these chickens are poor competitors due to a reactive coping style and experience a further reduced welfare situation before size-sorting (‘grading’) at four weeks of age. Our results from open field, tonic immobility and home pen activity monitoring show signs of lower fear and higher home-pen activity levels in smaller hens and do not support the idea of reactive coping. H/L ratios of smaller hens were also found to be lower, indicating less stress in these birds. Dissections of smaller and larger four-week breeder hens may offer an explanation in the form of a relatively larger gastrointestinal tract in smaller birds. We argue that this is a form of habituation to restricted feeding, offering these birds a physiological stress coping mechanism, and that low early growth rate may not always be a sign of poorer welfare in broiler breeders.

Keywords

animal welfarebroiler breederschickenfeed restrictiongrowthstress
Type
Research Article
Information
Animal Welfare , Volume 24 , Issue 4 , November 2015 , pp. 447 - 454
Copyright
© 2015 Universities Federation for Animal Welfare

References

Aviagen 2013 Ross Parent Stock Management Handbook: Ross 308. Aviagen Ltd: Midlothian, UKGoogle Scholar
Bennett, CD and Leeson, S 1989 Research note: Growth of broiler breeder pullets with skip-a-day versus daily feeding. Poultry Science 68: 836–838. http://dx.doi.org/10.3382/ps.0680836CrossRefGoogle Scholar
Bruggeman, V, Onagbesan, O, D’Hont, E, Buys, N, Safi, M, Vanmontfort, D, Berghman, L, Vandesande, F and Decuypere, E 1999 Effects of timing and duration of feed restriction during rearing on reproductive characteristics in broiler breeder females. Poultry Science 78: 1424–1434. http://dx.doi.org/10.1093/ps/78.10.1424CrossRefGoogle ScholarPubMed
Chen, SE, McMurtry, JP and Walzem, RL 2006 Overfeeding-induced ovarian dysfunction in broiler breeder hens is associated with lipotoxicity. Poultry Science 85: 70–81. http://dx.doi.org/10.1093/ps/85.1.70CrossRefGoogle ScholarPubMed
Collias, N and Joos, M 1953 The spectrographic analysis of sound signals of the domestic fowl. Behaviour 5: 175–188. http://dx.doi.org/10.1163/156853953X00104Google Scholar
Dawkins, MS, Cain, R, Merelie, K and Roberts, SJ 2013 In search of the behavioural correlates of optical flow patterns in the automat-ed assessment of broiler chicken welfare. Applied Animal Behaviour Science 145: 44–50. http://dx.doi.org/10.1016/j.applanim.2013.02.001CrossRefGoogle Scholar
Decuypere, E, Bruggeman, V, Onagbesan, O and Safi, M 2002 Endocrine physiology of reproduction in the female chicken: Old wine in new bottles. Avian and Poultry Biology Reviews 13(3): 145–153. http://dx.doi.org/10.3184/147020602783698638CrossRefGoogle Scholar
de Jong, IC, van Voorst, S, Ehlhardt, DA and Blokhuis, HJ 2002 Effects of feed restriction on physiological stress parameters in growing broiler breeders. British Poultry Science 43(2): 157–168. http://dx.doi.org/10.1080/00071660120121355CrossRefGoogle ScholarPubMed
Estevez, I, Andersen, I-L and Nævdal, E 2007 Group size, density and social dynamics in farm animals. Applied Animal Behaviour Science 103: 185–204. http://dx.doi.org/10.1016/j.applanim.2006.05.025CrossRefGoogle Scholar
Forkman, B, Boissy, A, Meunier-Salaün, M-C, Canali, E and Jones, RB 2007 A critical review of fear tests used on cattle, pigs, sheep, poultry and horses. Physiology & Behavior 92: 340–374. http://dx.doi.org/10.1016/j.physbeh.2007.03.016CrossRefGoogle ScholarPubMed
Gross, WB and Siegel, HS 1983 Evaluation of the heterophil/lymphocyte ratio as a measure of stress in chickens. Avian Diseases 27(4): 972–979. http://dx.doi.org/10.2307/1590198CrossRefGoogle ScholarPubMed
Hocking, PM, Maxwell, MH and Mitchell, MA 1993 Welfare assessment of broiler breeder and layer females subjected to food restriction and limited access to water during rearing. British Poultry Science 34: 443–458. http://dx.doi.org/10.1080/00071669308417600CrossRefGoogle Scholar
Hocking, PM, Maxwell, MH and Mitchell, MA 1996 Relationships between the degree of food restriction and welfare indices in broiler breeder females. British Poultry Science 37(2): 263–278. http://dx.doi.org/10.1080/00071669608417858CrossRefGoogle ScholarPubMed
Jackson, S and Diamond, J 1996 Metabolic and digestive responses to artificial selection in chickens. Evolution 50(4): 1638–1650. http://dx.doi.org/10.2307/2410900CrossRefGoogle ScholarPubMed
Jones, RB, Satterlee, DG and Marks, HL 1997 Fear-related behaviour in Japanese quail divergently selected for body weight. Applied Animal Behaviour Science 52: 87–98. http://dx.doi.org/10.1016/S0168-1591(96)01146-XCrossRefGoogle Scholar
Katanbaf, MN, Dunnington, EA and Siegel, PB 1989 Restricted feeding in early and late-feathering chickens 3. Organ size and carcass composition. Poultry Science 68: 359–368. http://dx.doi.org/10.3382/ps.0680359CrossRefGoogle ScholarPubMed
Kikusui, T, Winslow, JT and Mori, Y 2006 Social buffering: relief from stress and anxiety. Philosophical Transactions of the Royal Society B: Biological Sciences 361: 2215–2228. http://dx.doi.org/10.1098/rstb.2006.1941CrossRefGoogle ScholarPubMed
Koolhaas, JM, Korte, SM, de Boer, SF, van der Vegt, BJ, van Reenen, CG, Hopster, H, de Jong, IC, Ruis, MAW and Blokhuis, HJ 1999 Coping styles in animals: current status in behavior and stress-physiology. Neuroscience and Biobehavioral Reviews 23: 925–935. http://dx.doi.org/10.1016/S0149-7634(99)00026-3CrossRefGoogle ScholarPubMed
Korte, SM, Beuving, G, Ruesink, W and Blokhuis, HJ 1997 Plasma catecholamine and corticosterone levels during manual restraint in chicks from a high and low feather pecking line of laying hens. Physiology & Behavior 62(3): 437–441. http://dx.doi.org/10.1016/S0031-9384(97)00149-2CrossRefGoogle ScholarPubMed
Leenstra, FR and Pit, R 1988 Fat deposition in a broiler sire strain 3. Heritability of and genetic correlations among body weight, abdominal fat, and feed conversion. Poultry Science 67: 1–9. http://dx.doi.org/10.3382/ps.0670001CrossRefGoogle Scholar
Marin, RH, Freytes, P, Guzman, D and Jones, RB 2001 Effects of an acute stressor on fear and on the social reinstatement responses of domestic chicks to cagemates and strangers. Applied Animal Behaviour Science 71: 57–66. http://dx.doi.org/10.1016/S0168-1591(00)00167-2CrossRefGoogle ScholarPubMed
Marx, G, Leppelt, J and Ellendorff, F 2001 Vocalisation in chicks (Gallus gallus dom.) during stepwise social isolation. Applied Animal Behaviour Science 75: 61–74. http://dx.doi.org/10.1016/S0168-1591(01)00180-0CrossRefGoogle Scholar
Mench, JA 2002 Broiler breeders: feed restriction and welfare. World's Poultry Science Journal 58(1): 23–29. http://dx.doi.org/10.1079/WPS20020004CrossRefGoogle Scholar
Pinchasov, Y, Nir, I and Nitsan, Z 1985 Metabolic and anatom-ical adaptations of heavy-bodied chicks to intermittent feeding I. Food intake, growth rate, organ weight, and body composition. Poultry Science 64: 2098–2109. http://dx.doi.org/10.3382/ps.0642098CrossRefGoogle Scholar
Skinner-Noble, DO, Jones, RB and Teeter, RG 2003 Components of feed efficiency in broiler breeding stock: Is improved feed conversion associated with increased docility and lethargy in broilers? Poultry Science 82: 532–537. http://dx.doi.org/10.1093/ps/82.4.532CrossRefGoogle ScholarPubMed
Zuidhof, MJ, Robinson, FE, Feddes, JJR, Hardin, RT, Wilson, JL, McKay, RI and Newcombe, M 1995 The effects of nutrient dilution on the well-being and performance of female broiler breeders. Poultry Science 74: 441–456. http://dx.doi.org/10.3382/ps.0740441CrossRefGoogle ScholarPubMed
Zuidhof, MJ, Schneider, BL, Carney, VL, Korver, DR and Robinson, FE 2014 Growth, efficiency and yield of commercial broilers from 1957, 1968 and 2005. Poultry Science 93: 1–13. http://dx.doi.org/10.3382/ps.2014-04291CrossRefGoogle Scholar