Factors affecting production and reproduction traits of Gir and crossbred cattle

The present study was carried out to evaluate the effect of genetic group, parity, season and period of calving on production and reproduction traits of 210 lactation records of Gir and crossbred cows maintained at Livestock Farm, Rajasthan College of Agriculture, Udaipur covering a period of 10 years (1995–2004). The TMY, MY 305, PY, MY/CI, LL, DP were significantly affected by genetic group. Effect of parity was observed significant on LL, SP and CI and effect of season of calving was significant only on PY. The production performance was significantly lower in Gir purebreds as compared to crossbred cows. The performance was significantly higher for crossbred having less than 62.5% exotic blood than crossbred having more than 62.5% exotic blood.