Reproductive performance of sangamneri goats under field conditions

Reproductive data of Sanganmeri goats from 2004 to 2016 available at All India Coordinated Research Project on Goat Improvement (Sangamneri Field Unit), Mahatma Phule Krishi Vidyapeth, Rahuri (Maharashtra) were analysed to study the effect of non-genetic factors on reproductive performance. The overall least-squares means for age at maturity, age at first conception, age at first kidding, service period and kidding interval of Sangamneri goats were 260.73±2.12, 307.20±3.92, 457.99±3.93, 121.79±5.27 and 272.74±5.31 days, respectively. The overall least-squares means for number of kids per kidding and twinning rate was 1.82±0.04 and 62.05%, respectively. All the pre-partum reproductive traits were significantly influenced by village cluster, year of birth, and season of birth except type of birth. The post-partum reproductive traits were significantly influenced by village cluster, year of birth, season of birth and parity. The heritability estimates of age at first conception, age at first kidding and type of birth were 0.333±0.11, 0.796±0.16 and 0.541±0.13 respectively. Genetic and phenotypic correlations among reproductive traits in Sangamneri goat were positive and significant (P<0.01).