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Genetic aspect of milk yield per day of age at second calving in Friesian X Sahiwal crossbreds



Genetic aspect of milk yield per day of age at second calving in Friesian X Sahiwal crossbreds



Indian Journal of Animal Sciences 53(2): 189-191



Data were collected over a 10-yr period at 4 military farms on 1st lactations of 1346 crossbreds, representing 8 grades of Friesian inheritance. Milk yield per day of age at 2nd calving averaged 1.32 plus or minus 0.04 kg, and was significantly affected by farm, period of years, and genetic group; in cows with <1/8-, 1/8-, 1/4-, 3/8-, 1/2-, 5/8-, 3/4-, and 7/8- Friesian inheritance, it averaged 0.87, 1.06, 1.22, 1.28, 1.59, 1.56, 1.53 and 1.45 kg resp.

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