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Metabolic profile variation and reproductive performance of Holstein cows having different milk yields in southern Brazil






Arquivos da Faculdade de Veterinaria, UFRGS 26(1): 52-64

Metabolic profile variation and reproductive performance of Holstein cows having different milk yields in southern Brazil

Blood samples were obtained from 120 cows in 4 herds in Rio Grande do Sul state (southern Brazil) between winter 1996 and summer 1997. Groups of animals were selected based on production records and included 42 high-yielding cows (>9000 kg/lactation), 38 moderately productive cows (6000-7500 kg/lactation) and 40 pregnant dry cows. Lactating cows had higher blood concentrations of cholesterol and globulins than dry cows.

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Accession: 003199406



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