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Factors affecting milk yield per day of first calving interval in Friesian X Sahiwal crossbred cows



Factors affecting milk yield per day of first calving interval in Friesian X Sahiwal crossbred cows



Indian Journal of Dairy Science 35(4): 427-432



1st lactation records of 1346 Friesian/Sahiwal crossbreds on 4 military farms in 1969-1978 were analysed. Milk yield/day of 1st calving interval (CI) averaged 5.6 +or- 0.11 kg, differing among farms and 5-year periods and being highest for cows with 1/2-superscript 3/4 Friesian and lowest for those with <1/8 Friesian inheritance, and lower in summer than in winter or spring.

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