Milk yield and composition in dairy cows with post-partum disorders
نویسندگان
چکیده
ABSTRACT This study aimed to determine the impact of different post-partum disorders on milk yield and composition. One hundred fifteen Holstein cows from a commercial dairy farm located in state Rio Grande do Sul southern Brazil were monitored up 62 days post-partum. During this period, body condition score evaluation animal clinical examination conducted. Percentages fat, protein, lactose, as well somatic cells score, determined samples. The AST activity concentrations NEFA, calcium, BHBA, analyzed blood occurrence was identified 30 (26%) cows. Subclinical 64 (56%) Only 21 (18%) did not suffer any kind disorder within studied period. In study, no significant differences found production, cell count clinical, subclinical, healthy Milk fat fat: protein quotient (F:P) higher with 6 milk, lactose lower 22 42 (P<0.05).
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ژورنال
عنوان ژورنال: Arquivo Brasileiro De Medicina Veterinaria E Zootecnia
سال: 2021
ISSN: ['1678-4162', '0102-0935']
DOI: https://doi.org/10.1590/1678-4162-12095