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Response of cows during early lactation to a low energy ration for 4 days



Response of cows during early lactation to a low energy ration for 4 days



Journal of Animal Science 44(1): 118-123



A low-energy ration was given to 38 Holstein and Jersey cows between 18 and 101 months of age and 4 to 64 days post partum. The ration, primarily lucerne hay and cottonseed meal, provided only 30% of the energy but 90% of the protein requirements for lactation. Milk production declined, but milk fat yield was relatively constant due to a large increase in milk fat percentage. Solids-corrected milk yield declined from 22.5 to 19.1 kg during the 4 days of low energy intake.

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Accession: 000485595

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