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Journal of Dairy Science Vol. 76 No. 9 2528-2535
© 1993 by American Dairy Science Association ®
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Effect of Body Condition Score at Calving on Performance, Some Blood Parameters, and Milk Fatty Acid Composition in Dairy Cows

Ottavia Pedron 1, Federica Cheli 1, Elena Senatore 1, Daniela Baroli 1, and Rita Rizzi 1

1 Istituto di Alimentazione Animale, University of Milan, via Celoria 10, 20133 Milano, Italy

Effect of body condition score at calving and of change in body condition score on productive and reproductive performance, on lactation curve parameters, and on postpartum disease occurrence was investigated in 213 Italian Holstein-Friesian cows. Plasma FFA, glucose, and insulin concentrations and milk fatty acid composition were analyzed in 15 cows. The cows calving at highest body condition score lost more subcutaneous fat; condition score change did not exceed 1.05 units. Change in body condition score was positively associated with peak and total milk production.

Occurrence of retained placenta was not related to the content of fat stores at calving. Glucose concentrations were relatively constant, FFA concentrations were highest, and insulin concentrations were lower in cows calving at the highest body condition score. Milk fatty acid composition reflected the different utilization of body fat stores.

Key Words: body condition score • performance • blood parameters • fatty acids in milk

Submitted on October 6, 1992
Accepted on May 10, 1993




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