Vol. 9, Special Issue 9 (2020)

Author(s):
Bhagyashri Babanrao Bhosale, Nitesh Sharma, Tushar Rajendra Bhosale and Dr. SD Mandakmale

Abstract:
The data on reproduction and production performance HF x Gir halfbred cows maintained at R.C.D.P. on Cattle, Mahatma Phule Krishi Vidyapeeth, Rahuri (Maharashtra) was collected and analyzed by least-squares technique to estimate the effect of lactation order and reproductive disorders. The lactation order had significant effect on open period and non-significant effect on service period, calving interval, number of service per conception, monthly peak yield, average daily milk yield, monthly peak yield of previous lactation, lactational milk yield, and lactational milk yield of previous lactation. The effect of reproductive disorders was the significant on open period, service period, calving interval, number of service per conception, monthly peak yield, average daily milk yield, monthly peak yield of previous lactation, lactational milk yield, lactational milk yield of previous lactation. Present study shows the per cent increase in open period, service period, calving interval due to reproductive disorders were 15.92 to 91.68, 56.60 to 94.62 and 10.36 to 39.33 per cent, respectively. However there was decline in lactational milk yield in the range of 10.83 to 36.69 per cent due to reproductive disorders.