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Experimental manipulation of post partum energy partition in high yielding dairy cows



Experimental manipulation of post partum energy partition in high yielding dairy cows



Israel Journal of Veterinary Medicine 44(3): 159-167



An attempt to influence post partum (PP) energy partition in the dairy cow was undertaken. The object of the experiment was to avoid ante partum (AP) fat accumulation and its metabolic consequences. Food intake was restricted for 20.sbd.30 days AP. The experiment was designed in three stages: (1) a limited study on 8 pairs of matched dairy cows in order to evaluate the risk factor as indicated by metabolic parameters; (2) an extended study on 70 pairs of matched dairy cows, implemented a year later, in order to study fertility indices and clinical parameters; (3) an extensive study comprising about 3000 dairy cows, which is not in progress. The results to date show that AP food restriction (35%.sbd.50% below NRC recommendations) is associated with significant AP reduction in weight loss and improvement of the fertility index.

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Accession: 001831860

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