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The effect of the level of milk yield on the reproduction traits in black and white cows
Biotechnology in Animal Husbandry
In this study a relationship between the milk yield and following reproduction traits: number of inseminations per conception [AIS], service period [SP], age at calving [AC], calving interval [CI] and birth weight [BW] is studied. The research involved dairy cows of European type of Black and White cattle which are being intensively improved by the genes of Holstein -Friesian breed. Mean values of general average for number of inseminations per conception, service period, age at calving,doi:10.2298/bah1203487d fatcat:rsud5rmefjh6bdgbm4ccdgyhsy