Early lactation ratio of fat and protein percentage in milk is associated with health, milk production, and survival.
作者： F. Toni , L. Vincenti , L. Grigoletto , A. Ricci , Y.H. Schukken
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摘要: An observational study was conducted on 1,498 cows in 3 large Italian dairy farms. The objective of the to evaluate prognostic value early lactation fat-to-protein ratio milk. In all herds, an intensive herd health monitoring program being practiced that included weekly visits and extensive data collection health, reproduction, production, culling. A milk sample collected from at approximately 7 d postpartum percentage this measured. Animals with a greater than 2.0 showed increase diseases such as retained placenta, left-displaced abomasums, metritis clinical endometritis. We also observed decrease production but limited 2 higher when sample. Finally, increased risk culled observed, culling increasing No effect found incidence mastitis herds. From study, we conclude analyses components (6-9 days milk), particularly percentage, is valuable indicator lipo-mobilization negative energy balance status cows. Because single sufficient provide information, suggest addition programs
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