Studies on First Lactation Production Traits of HF x Gir Halfbreds
The data for a period of 37 years pertaining to HF X Gir halfbreds maintained at RCDP on cattle MPKV, Rahuri, Dist. Ahmednagar (M.S.) were utilized for the present study. The overall least squares mean of first lactation milk yield, first lactation length, first dry period and milk yield per day of first calving interval in HF x Gir halfbreds were 2703.10 ± 97.91 kg, 332.80 ± 8.72 days, 85.59 ± 7.45 days and 6.56 ± 0.20 kg per days. The analysis of variance revealed that period of calving and peak milk yield had significant effect (P< 0.01) only on FLMY and MY/FCI. Season of calving significantly (P<0.01) affect the FDP and MY/FCI while, generation had significant (P<0.05) effect only on MY/FCI. The variation due to generation was significant (P<0.05) only in MY/FCI in HF x Gir halfbreds. Therefore, it is concluded that the non-genetic factors had significant effect on most of the productive traits, which indicated the response of animals for variation in management factors. So, to obtain better performance management plays vital role in addition to genetic improvement of the animals.
Gir Crossbreds, Non-genetic Factor, Production Traits
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