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Estimates of genetic parameters and genetic trends for growth, reproduction, milk production and milk composition traits of Awassi sheep

Published online by Cambridge University Press:  29 June 2018

A. Haile ,
M. Hilali ,
H. Hassen ,
R. N. B. Lobo  and
B. Rischkowsky
A. Haile*
Affiliation:
Sustainable Intensification and Resilient Production Systems (SIRPS) Program, International Center for Agricultural Research in the Dry Areas (ICARDA), c/o ILRI 5689 Addis Ababa, Ethiopia
M. Hilali
Affiliation:
Sustainable Intensification and Resilient Production Systems (SIRPS) program, International Center for Agricultural Research in the Dry Areas (ICARDA), P.O. Box950764, Amman 11195, Jordan
H. Hassen
Affiliation:
Sustainable Intensification and Resilient Production Systems (SIRPS) Program, International Center for Agricultural Research in the Dry Areas (ICARDA), c/o ILRI 5689 Addis Ababa, Ethiopia
R. N. B. Lobo
Affiliation:
Embrapa Caprinos e Ovinos, Caixa Postal 71, CEP 62010-970 Sobral/CE, Brazil
B. Rischkowsky
Affiliation:
Sustainable Intensification and Resilient Production Systems (SIRPS) Program, International Center for Agricultural Research in the Dry Areas (ICARDA), c/o ILRI 5689 Addis Ababa, Ethiopia
*
†E-mail: [email protected]
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Abstract

Genetic parameters and genetic trends for growth, reproduction, milk production and composition traits were estimated for Syrian (S) and Turkish (T) Awassi sheep and their crosses maintained at the International Center for Agricultural Research in the Dry Areas Tal Hadya station, Aleppo, Syria (now in Terbol station in Lebanon). The data were spread over 9 years. The individual breed additive effects of T were positive and significant (P<0.05) for birth weight (BW). However, the values for weaning weight (WW) and pre-weaning weight gain (WG) were negative, even though they were significant (P<0.05). These estimates were positive and significant (P<0.05) for all reproduction and milk traits, except for litter weight at birth (LWB). The additive contributions of T were 60.72±0.94 days, 1.643±0.359 kg, 13.09±0.89 days, 16.13±0.89 kg, 1.12±0.44 kg, 0.71±0.26 kg, 2.80±0.72 kg and 0.83±0.32 kg for lambing interval (LI), litter weight at weaning (LWW), lactation length, milk yield, fat yield, protein yield, total solids yield and lactose yield, respectively. The heterosis effects, both individual and maternal, were non-significant (P>0.05) for most growth traits. Crossing of T with S, however, resulted in desirable and significant (P<0.05) individual heterosis effects for all the reproduction, milk production and constituent yields. The heritability (h²) estimates, both direct and maternal, were low for BW, WW, WG and all reproductive traits indicating major influence of environmental factors, whereas milk yield and composition had medium values. Birth weight had moderate genetic correlation with WW and WG. The genetic correlation between WW and WG was high (0.724±0.951). Lambing interval had large negative genetic correlation with LWB and LWW. However, LI had medium significant correlations with all the milk production and composition traits. Larger litter weights at birth had high and negative influence on milk yield of the dam and its constituents. Genetic changes over years for all traits were non-significant. The lack of genetic change in the studied traits calls for systematic and organized selection scheme.

Keywords

BWlitter weightfat and protein yieldslactation lengthenvironmental factors
Type
Research Article
Information
animal , Volume 13 , Issue 2 , February 2019 , pp. 240 - 247
Copyright
© The Animal Consortium 2018 

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References

Arora, AL, Gowane, GR, Prince, LLL and Prakash, Ved 2010. Genetic trends for performance traits of Malpura sheep. Indian Journal of Animal Sciences 80, 937–939.Google Scholar
Astruc, JM, Barillet, F, Barbat, A, Clément, V and Boichard, D 2002. Genetic evaluation of dairy sheep in France. In Proceedings of the Seventh World Congress on Genetics Applied to Livestock Production, 19–23 August 2002, Montpellier, France, Communication 01-45.Google Scholar
Boujenane, I, Chikhi, A, Sylla, M and Ibnelbachyrb, M 2013. Estimation of genetic parameters and genetic gains for reproductive traits and body weight of D’man ewes. Small Ruminant Research 113, 40–46.Google Scholar
Cunningham, EP and Syrstad, O 1987. Crossbreeding Bos indicus and Bos taurus for milk production in the tropics. Food and Agriculture Organization of the United Nations Animal Production and Health, paper No. 68. Rome, Italy, 90 pp.Google Scholar
Dickerson, GE 1973. Inbreeding and heterosis in animals. In Proceedings of an Animal Breeding Symposium in Honour of Jay Lush. American Society of Animal Science and American Dairy Science Association, 29 July 1972, Champaign, IL, USA, pp. 54–77.Google Scholar
Duguma, G, Schoeman, SJ, Cloete, SWP and Jordaan, GF 2002. Genetic and environmental parameters for productivity in Merinos. South African Journal of Animal Science 32, 154–159.Google Scholar
Food and Agricultural Organization of the United Nations 2015. The second report on the State of the World’s Animal Genetic Resources for Food and Agriculture (ed. BD Scherf and D Pilling), 562 pp. FAO Commission on Genetic Resources for Food and Agriculture Assessments, Rome, Italy.Google Scholar
Fogarty, NM 1995. Genetic parameters for live weight, fat and muscle measurements, wool production and reproduction in sheep: a review. Animal Breeding Abstracts 63, 101–143.Google Scholar
Galal, S, Gürsoy, O and Shaat, I 2008. Awassi sheep as a genetic resource and efforts for their genetic improvement – a review. Small Ruminant Research 79, 99–108.Google Scholar
Gizaw, S and Joshi, BK 2004. Estimates of genetic parameters for growth traits in Menz and Awassi×Menz crossbred sheep in Ethiopia. Indian Journal of Animal Sciences 74, 864–867.Google Scholar
Gizaw, S, Sisay, L, Hans, K and Van Arendonk, JAM 2007. Estimates of genetic parameters and genetic trends for live weight and fleece traits in Menz sheep. Small Ruminant Research 70, 145–153.Google Scholar
Gürsoy, O 2005. Small ruminant breeds of Turkey. In Characterization of small ruminant breeds in West Asia and North Africa, I. West Asia (ed. L Iñiguez), pp 239–416. International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria.Google Scholar
Gürsoy, O, Kirk, K, Cebeci, Z and Pollot, GE 1995. Genetic evaluation of growth performance in Awassi sheep. In Strategies for Sheep and Goat Breeding (ed. D Gabiña), pp. 193–201. CIHEAM, Zaragoza, Spain.Google Scholar
Haile, A, Hilali, M, Hassen, H, Rekik, M, Lobo, RNB, Tibbo, M, Mwacharo, J and Rischkowsky, B 2017. Evaluation of Awassi sheep genotypes for growth, milk production and milk composition. Journal of Experimental Biology and Agricultural Sciences S68–S75.Google Scholar
Iñiguez, L and Hilali, M 2009. Evaluation of Awassi genotypes for improved milk production in Syria. Livestock Science 120, 232–239.Google Scholar
Javed, K, Iram, A, Abdullah, M, Sattar, MA and Akhtar, M 2013. Genetic trends for some productive traits of Lohi sheep in Pakistan. Pakistan Journal of Science 65, 292–295.Google Scholar
Jiménez, MA and Jurado, JJ 2006. Analysis of the genetic progress in the Assaf Leon Breeding program. Informacion Tecnica Economica AgrariaIn 102, 231–237.Google Scholar
Johor, KS and Norton, NW 1977. Genetic study on birth and weaning weight of Suffolk and Torghee sheep. Indian Veterinary Journal 54, 902.Google Scholar
Kassem, R 2005. Small ruminant breeds of Syria. In Characterization of small ruminant breeds in West Asia and North Africa, I. West Asia (ed. L Iñiguez), pp 183–237. International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria.Google Scholar
Marta, O and Dana, P 2008. Genetic and environmental trends for milk production traits in sheep estimated with test-day model. Asian-Australian Journal of Animal Sciences 21, 1088–1096.Google Scholar
Mekuriaw, S and Haile, A 2014. Genetic parameter estimates for growth and reproductive trait of sheep for genetic improvement and designing breeding program in Ethiopia: a review. Open Access Library Journal 1, e589.Google Scholar
Meyer, K 2007. WOMBAT—a tool for mixed model analyses in quantitative genetics by REML. J Zhejiang Uni Sci B 8, 815–821.Google Scholar
Mokhtari, MS, Rashidi, A and Esmailizadeh, AK 2010. Estimates of phenotypic and genetic parameters for reproductive traits in Kermani sheep. Small Ruminant Research 88, 27–31.Google Scholar
Muhammad, MT, Masroor, AB, Ferhat, A, Abdul, W, Farhat, AB and Majed, R 2010. Heritability of pre-weaning growth performance traits in Mengali sheep in (Balochistan) Pakistan. International Journal of Biodiversity and Conservation 2, 284–288.Google Scholar
Pinelli, F, Oltenacu, PA, Iannolino, G, Grosu, H, D’Amico, A, Scimonelli, M, Genna, G, Calagna, G and Ferrantelli, V 2000. Design and implementation of a genetic improvement program for Comisana dairy sheep in Sicily. In Proceedings of the 6th Great Lakes Dairy Sheep Symposium, 2–4 November 2000, Guelph, ON, Canada, 129 pp.Google Scholar
Pollott, GE and Gootwine, E 2001. A genetic analysis of complete lactation milk production in Improved Awassi sheep. Livestock Production Science 71, 37–47.Google Scholar
Safari, E, Fogarty, NM and Gilmour, AR 2005. A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep. Livestock Production Science 92, 271–289.Google Scholar
Suvindra, K and Tomar, NS 1982. Genetic studies on Corriedale sheep in India. Indian Veterinary Journal 59, 948.Google Scholar
Talafha, AQ and Ababneh, MM 2011. Awassi sheep reproduction and milk production: review. Tropical Animal Health and Production 43, 1319–1326.Google Scholar