FACTORS INFLUENCING THE PRODUCTION PERFORMANCE IN GANGATIRI CATTLE.

The performance records of 202 Gangatiri cows, born to 11 sires, covered 16 years period from 1993 to 2008 were analyzed in the humid subtropical climate with large variation between summer and winter temperatures. The overall least squares means and coefficient of variation (C.V.) for first lactation milk yield was found as 946.57±39.02 kg and 29.11, respectively. The overall least squares means for first lactation peak yield was calculated as 4.80 ± 0.18 kg with coefficient of variation of 26.27%. The overall least squares means for first lactation length was estimated as 247.14 ± 6.67 days with coefficient of variation of 23.39%. The overall least squares means for first dry period was calculated as 211.11 ± 6.67 days with coefficient of variation of 46.28%. [ABSTRACT FROM AUTHOR]