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Lactational performance and energy utilisation in high yielding cows

  • D.E. Beever (a1), A.J. Hattan (a1), S B Cammell (a1), D.J. Humphries (a1) and A K Jones (a1)...

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Significant increases in genetic merit for milk production in the UK dairy herd have led to high and persistent milk yields becoming relatively common. Data relating this level of performance to the extent of the energy deficit in early lactation, possible impact on milk quality and the contribution of mobilised energy to milk production are relatively scarce. The aim of this study was to compare lactational performance in high- (HYC) and average- (AYC) yielding cows and to reconcile changes in body status (liveweight and condition score) of HYC with associated measurements of energy depletion and repletion.

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Beever, D.E., Cammell, S.B., Sutton, J.D., Rowe, N. and Perrott, G.E. (1998). Energy metabolism in high yielding cows. In: Proceedings of the winter meeting of the British Society of Animal Science, 1998
Cammell, S.B., Thomson, D.J., Beever, D.E., Haines, M.J., Dhanoa, M.S., Spooner, M.C. (198)]. The efficiency of energy utilisation in growing cattle consuming fresh perennial ryegrass (Lolium perenne cv Melle) or white clover (Trifolium repens cv Blanca). British Journal of Nutrition, 55, 669-80

Lactational performance and energy utilisation in high yielding cows

  • D.E. Beever (a1), A.J. Hattan (a1), S B Cammell (a1), D.J. Humphries (a1) and A K Jones (a1)...

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