Effect of Booroola fecundity (FeCB) gene on litter size and scope for use in restoration of Nilagiri sheep from threatened status
Arth Bhaljibhai Chaudhari, Rajendran Ramanujam, Venkataramanan Ragothaman
Journal Title:Revista Agraria Academica / Agrarian Academic Journal
The Nilagiri breed native to Nilgiri hills of Tamil Nadu is one of the fine wool breeds of India, which is now primarily reared for mutton. The population size has now declined to the threatened status. The presence of FecB mutation, which increases fecundity, has been confirmed recently in Nilagiri breed. To find out the scope for utilizing this mutation in the breeding programme to restore the population from threatened status, evaluation of effect of this mutation on litter traits was carried out. Litter sizes were compared between non-carrier wild type (++) and carrier (B+) ewes. The litter size at birth was 1.23 ± 0.05 and 1.44 ± 0.06, respectively. The litter size at weaning was 1.14 ± 0.07 and 1.34 ± 0.07, respectively. The litter size at birth and litter size at weaning were significantly higher among carrier animals. These results indicate scope for utilising the FecB mutation to improve prolificacy in the Nilagiri breed.