STUDY OF MILK PRODUCTION INDICES FOR CATTLE BREEDS EXPLOITED IN PRIVATE FARMS IN NEAMT COUNTY

Mariana Nistor-Anton, V. Maciuc

Abstract
    In this paper, we have proceeded to analyze milk production indexes, on standard lactation (305 days) in maturity equivalent (MS), on successive lactations for two breeds of cattle, Black Spotted Romanian Cattle and Holstein, exploited in family farms in Neamț County. For this process, we utilized data from associations accredited to carry out the official control of milk production (COP), the Association of Animal Breeders "Operator I.A" Neamț and the Association of Cattle Breeders from Mureș County, as well as data from the Genealogical Register. In Holstein cows, an average quantity of milk of 6096.49 kg was registered on normal lactation, with 19.44% higher than that obtained in purebred Black Spotted Romanian Cattle but this performance is below the breed average. Comparatively, in the population of Black Spotted Romanian Cattle, the average production was 5104.21 kg / lactation, the phenotypic production in this case being close in value to the real productive potential of the breed. Regarding the fat / protein ratio, it registered values of 1.17, both in the Holstein breed and in the Black Spotted Romanian Cattle, values that are close to the normal limits of the two breeds (1.20).