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Yield and composition of milk from lactating mares: effect of lactation stage and individual differences

  • Michel Doreau (a1), Sylviane Boulot (a1), Jean-Pierre Barlet (a2) and Philippe Patureau-Mirand (a3)

The yields and composition of milk from nursing mares were studied during the first two months of lactation in 11 mares of heavy breeds (784 kg). Daily yield increased from 21·7 to 24·6 kg between weeks 1 and 8 of lactation. Fat, protein, gross energy and Ca concentrations significantly decreased when lactose content increased during this period. Individual variations were higher for yield than for composition. Casein, whey protein and non-protein N (56, 34 and 10% of crude protein, respectively) and amino acid composition did not vary between weeks 1 and 8 of lactation.

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Journal of Dairy Research
  • ISSN: 0022-0299
  • EISSN: 1469-7629
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