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Non-genetic factors on milk and fat production in Holstein breed herds in Minas Gerais State



Non-genetic factors on milk and fat production in Holstein breed herds in Minas Gerais State



Ciencia e Agrotecnologia 24(3): 766-772



Records of 29 662 lactations of 9741 Holstein cows from 227 herds belonging to three breeders' associations in Minas Gerais State, Brazil, gathered from 1990 to 1995, were analysed to evaluate the effects of non-genetic factors on total milk yield (MY) and total fat yield (FY). The means, standard errors and coefficients of variation for MY and FY were 5190.2, 5.9 kg and 19.5%, and 175.0, 0.2 kg and 19.3%, respectively.

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Accession: 003510274

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