Genetic characterization of layer germplasm evolved by AICRP on poultry breeding
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Keywords:
AICRP, Characterization, Layer lines, Production traits, SelectionAbstract
The study was carried out to evaluate White Leghorn lines (IWH, IWI, IWK and layer control-LC) and to genetically characterize IWH and LC lines for production traits. Body weight at 20 weeks was significantly higher in LC, IWH and IWK lines as compared to IWI. Similarly, body weight at 40 weeks of age was also significantly higher in LC as compared to IWK, IWH and IWI. Among selected lines, it was significantly higher in IWK than that in IWH and IWI. The ASM was significantly lesser in IWH followed by IWI, IWK and LC. Egg weight at 28 weeks was significantly higher in LC followed by IWK, IWI and IWH. However, egg weight at 40 weeks was significantly higher in IWK followed by LC, IWI and IWH. Similarly, egg weight at 52 weeks of age was significantly higher in IWK followed by LC, IWH and IWI. Egg mass at 40 weeks of age was significantly higher in IWH, IWI and IWK as compared to LC. Egg mass at 52 weeks of age was also significantly higher in IWH as compared to IWK, IWI and LC. However, this trait was significantly higher in IWK and IWI as compared to LC. Heritability estimates on sire component of variance were high for all the traits except for ASM (moderate) in IWH while, they were high for all the traits except for body weight at 40 weeks of age (moderate) in LC.The study concluded that despite the continuous selection, these lines differ for many of the production traits and considerable genetic variation exists for many of the traits in IWH and LC, and IWH line could continue to be improved for production traits.Downloads
References
Akbas Y and Takma C. 2005. Canonical correlation analysis for studying the relationship between egg production traits and body weight, egg weight and age at sexual maturity in layers. Czech Journal of Animal Science 50(4): 163–68. DOI: https://doi.org/10.17221/4010-CJAS
Anonymous. 2012. Annual Report (2011–12), Central Avian Research Institute, Izatnagar, Bareilly (UP). pp 1–71.
Bais R K S, Johari D C, Hazary R C, Kataria M C, Sharma D and Sharma R D. 1997. Inheritance of important economic traits in IWK strain of White Leghorn under reciprocal recurrent selection. Indian Journal of Poultry Science 32: 189– 91.
Becker W A. 1992. Manual of Quantitative Genetics. 5th edn, pp 189. Academic Enterprises, USA.
Chatterjee R N, Niranjan M, Panda A K, Reddy B L N, Bhanja S K and Singh D. 2008. Inheritance of important economic traits in 3 pure lines and a control population of White Leghorn. Indian Journal of Animal Sciences 78(1): 75–79.
Fairfull R W and Gowe R S. 1990. Genetics of egg production in chickens. Poultry Breeding and Genetics. Pages 705–59.
(Ed.) Crawford R D. Elsevier Science Publishers B.V., The Netherlands.
Harvey W R. 1990. User’s guide for PC-2 version of LSM LMW mixed model least-squares and maximum likelihood computer program. Ohio State University, Columbus, USA.
Jayalaxmi P, Gupta R B, Chatterjee R N, Sharma R P and Reddy V R. 2010. Genetic analysis of growth and production traits in IWK strain of White Leghorn. Indian Journal of Poultry Science 45(2): 123–26.
King S C and Henderson C R. 1954. Variance component analysis in heritability studies. Poultry Science 33:147–54. DOI: https://doi.org/10.3382/ps.0330147
Reddy B L N, Panda A K, Reddy M R, Rama Rao S V and Praharaj N K. 2001. Studies on the influence of juvenile growth traits on laying performance in egg type chickens. Indian Journal of Poultry Science 36: 290–93.
Sethi S, Mishra P K, Mishra S C and Dehuri P K. 2003. Genetic characterization of a White Leghorn population for some production traits. Indian Journal of Poultry Science 38: 277– 80.
Snedecor G W and Cochran W G. 1994. Statistical Methods. 8th edn. Affiliated East-West Press and Iowa State University Press, Ames, Iowa, USA.
Sreenivas D, Gnana Prakash M, Mahender M and Chatterjee R N. 2013. Genetic analysis of egg quality traits in White Leghorn chicken. Veterinary World 6(5): 263–66. DOI: https://doi.org/10.5455/vetworld.2013.263-266
Vasu Y, Narasimha Rao G, Sharma R P, Hazary R C, Gupta R B and Satyanarayana A. 2004. Inheritance of important economic traits in IWI and control strains of White Leghorn. Indian Journal of Poultry Science 39: 1–8.
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