Physilology and Management: Effects of Induced Parturition and Estradiol on Feed Intake, Liver Triglyceride Concentration, and Plasma Metabolites Of Transition Dairy Cows

摘要

The effect of induced parturition and estradiol on feed intake, liver triglyceride, plasma metabolites and milk yield was evaluated in fifty-six Holstein cows and heifers. Cows were assigned to treatments on d 260 of gestation and were on trial until d 10 postpartum for measurement of dry matter intake (DMI), plasma metabolites, and liver triglyceride and until d 31 postpartum to measure milk yield. Fourteen animals per group (9 cows and 5 heifers) Received either a placebo, 1 mg of fenprostalene, 50 Mg of estradiol-17β benzoate, or both on d 276 of Gestation.