Selection Indices for Improvement in Body Weights in Sirohi Goats Under Field Conditions of Southern Rajasthan

S.K. Bhakar; S.B.S. Yadav; H. Singh; Singh Ajay; Kaushik; P.K

Volume : IV, Issue : I, January - 2015

Selection Indices for Improvement in Body Weights in Sirohi Goats Under Field Conditions of Southern Rajasthan

S. K. Bhakar, S. B. S. Yadav, H. Singh, Singh Ajay, Kaushik, P. K

Abstract :

In the present investigation, body weights at birth, 3, 6, 9 and 12 months of age, of 3465 kids of Sirohi eed born from 1447 does and 59 bucks spreading over a period of seven years (2006-2012) andmaintained under AICRP on goatsin Nathdwara, Railmagra and Devegarh clusters of Rajasamand district, Bhadsoda cluster of Chittorgarh district and Vallabhnagar cluster of Udaipur district of Rajasthan wereanalyzed to estimate genetic and phenotypic parameters required for the development of selection indices.A total of 26 selection indices were constructed by incorporating different traits in different combinations to know which and how many traits combines best in an index based on reliability, genetic gain in aggregate genotype and maximum genetic gain in 12 months body weight.The index0.3532 (BWT) + 0.2112 (3WT) + 0.1374 (6WT) + 0.1892 (12WT) was adjudged to be the most useful due to its highest reliability (rIH= 0.4927)and maximum genetic gain in 12 months body weight.