RESTRICTED SELECTION INDEX FOR GROWTH TRAITS OF SHAMI KIDS
DOI:
https://doi.org/10.36103/ijas.v54i1.1683Keywords:
Shami Goat; Genetic gain; fixed effects; meat production genetic selectionAbstract
A Restricted Selection Index was constructed to genetically evaluate animals using a dataset composed of body weights of Shami kids at the ages of birth, weaning, and 6-month. The variance-covariance matrix (VCV) was generated and used to estimate genetic parameters for the index construction after adjusting the fixed effects; year, birth month, kid sex, type (single, twin or triplet) of birth, doe age, weights at kidding (KW), birth (BWT) and weaning (WWT) as covariates. General Linear Model and Restricted Maximum Likelihood methods were used to estimate BLUE for fixed effects and variance components for random effects, respectively. BW was 3.6 ± 0.017, WW 16.8 ± 0.10, and weight at 6 months (MWT) was 26.7 ± 0.21 Kg. With the exception of buck origin and doe age, all tested factors significantly affected growth traits. Heritability for BWT, WWT, and MWT was 0.70 ± 0.10, 0.32 ± 0.075, and 0.41 ± 0.12, and repeatability was 0.78, 0.35, and 0.47, respectively. Genetic and phenotypic correlations were positive and significant between BWT and WWT, and between WWT and MWT. The restricted selection index constructed for increasing weights at MWT and WWT with restriction on BWT yielded a strong correlation coefficient (rIA) between the genetic merit and the index at 0.54 (p<0.01).
References
Agriculture, M.o. Ministry of Agriculture: Jordan, 2001
Agriculture, M.o. Ministry of Agriculture: Jordan, 2012
Al-Azzawi, W.A. 1996. Some conventional and restricted selection indexes in Awassi sheep. IPA. J. Agric. Res, 69, 95-108
Alkass, J.E. ; H.N. Hermiz; A. A. Al-Rawi and M.Singh. 2002. Restricted selection indices for milk yield and growth of kid goats in Iraq. Session 1, p 1.94. 7th World Congress on Genetics Applied to Livestock Production, August 19-23, 2002, Montpellier, France
Aziz, D.A. 1988. Restricted selection index for growth traits in sheep. Dirasat, 15, 162-168
Black, J.L. 1983. Growth and development of lambs. In ‘Sheep production’.(Ed. W Haresign) pp. 21–58. Butterworths: London:.
Dalton, C. 1980. An introduction to practical animal breeding; Granada
Das, S.M.; E.O.Rege and S. Mesfin. 1994. Phenotypic and genetic parameters of Blended goats at Mayla. In Proceedings of Proceeding of 3rd Biennual Conference of the African Small Ruminant Research Network, Kampala, Uganda; pp. 63-70
Falconer, D.S. and T.F.C. MacKay.1996. Introduction to quantitative genetics. (4th Ed.) Longham , Harlow, UK
Gupta, R.; A. Pyne.; R. Sinha and S. Roy. 1989 Birth weight and body weight gain in Black Bengal goats. Indian Journal of Animal Production and Management, 5, 169-171
Günes, H.; P. Horst; M. Evrim and A. Valle-Zárate. 2002. Studies on improvement of the productivity of Turkish Angora goats by crossing with South African Angora goats. Small Ruminant Research, 45, 115-122
Hadjipanayiotou, M. and A. Louca,. 1976. The effects of partial suckling on the lactation performance of Chios sheep and Damascus goats and the growth rate of the lambs and kids. The Journal of Agricultural Science, 87, 15-20
Hayes, J. and W. Hill. 1981. Modification of estimates of parameters in the construction of genetic selection indices ('bending'). Biometrics, 483-493
Hazel, L.N. 1943. The genetic basis for constructing selection indexes. Genetics, 28, 476-490
Hermiz, H. 2001. Genetic evaluation of local goats and their crosses Using Some Productive Traits. Ph. D. Thesis, University of Baghdad, Iraq
Hermiz, H. 2005. Genetic evaluation of Local goats and their crosses depending on their growth traits. The Iraqi Journal of Agricultural Sciences, 36(6):181-189
Husain, S.S.; P. Horst and A.B Islam.. 1996. Study on the growth performance of Black Bengal goats in different periods. Small Ruminant Research, 21, 165-171
Jawasreh, K. 2003. Genetic evaluation of Damascus goats in Jordan. PhD. Dissertation University of Bagdad, Iraq
Jawasreh, K.; Z. B. Ismail; F. Iya; V. J. Castaneda-Bustos and M. Valencia-Posadas. 2018. Genetic parameter estimation for pre-weaning growth traits in Jordan Awassi sheep. Veterinary world, , 11, 254-258, doi:10.14202/vetworld.2018.254-258
Johansson, I. and J. Rendel. 1969. Genetics and animal breeding; Oliver and Boyd: Edinbugh
Kempthorne, O. and A. Nordskog. 1959 Restricted selection indices. Biometrics, 15, 10-19
Lin, C. 1985. A simple stepwise procedure of deriving selection index with restrictions. Theoretical and applied genetics, 70, 147-150
Mavrogenis, A. 1985. Relationships among criteria of selection for growth and mature bodyweight in the Damascus goat. Institute, A.R., Ed. Ministry of Agriculture and Natural Resources: Nicosia, p 6p
Mavrogenis, A.P.; A. Constantinou and A. Louca. 1984. Environmental and genetic causes of variation in production traits of Damascus goats. 1. Pre-weaning and post-weaning growth. Animal Science, 38, 91-97
Patterson, H. and P. Thompson. 1971. Recovery of inter-block information when block sizes are unequal. Biometrika, 58, 545-554
Phillips, C. and D. Piggins. 1992. Farm Animals and the Environment, 2nd ed.; Cambridge, UK
Pijoan, A. and D. Chávez. 1994. Growth of feral goats on Guadalupe Island, born in two different seasons and reared under two systems of management. Técnica Pecuaria en México, 32, 113-123
Robertson, A. 1959. Experimental design in the evaluation of genetic parameters. Biometrics, 15, 219-226
Said, S.I.; F. S. Badawi and A. A. Alrawi. 1990. Comparison of white and brown Angora goat with respect to liveweight. In Proceedings of Proceedings of the 4th World Congress on Genetics applied to Livestock Production, Edinburgh 23-27 July, 1990. XV. Beef cattle, sheep and pig genetics and breeding, fibre, fur and meat quality.; pp. 201-204
Sawalha, R. 1998. Some Genetic and Non-Genetic Factors Affecting Body Dimensions of Damascus Kids in Jordan. M. Sc. Thesis, University of Jordan, Amman, Jordan
Saxena, V.; V. Taneja and P. Bhat. 1990 Genetic and nongenetic factors affecting pre-weaning growth in Jamunapari goats. Indian Journal of Animal Sciences, 60, 974-978
Smith, H.F.1936. A discriminant function for plant selection. Annals of eugenics , 7, 240-250
Wilson, R.T. 1987. Livestock production in central Mali: Environmental factors affecting weight in traditionally managed goats and sheep. Animal Science, 45, 223-232.
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