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Kansas Agricultural Experiment Station Research Reports
1991; Kansas Agricultural Experiment Station contribution; no. 91-355-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 623; Beef; Feed intake; Ruminal capacity; Gestation
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Periparturient Changes In Intake, Rumen Capacity, And Selected Blood Metabolites In Beef Cows, T.A. Stanley, R.C. Cochran, D.L. Harmon, E.S. Vanzant
Periparturient Changes In Intake, Rumen Capacity, And Selected Blood Metabolites In Beef Cows, T.A. Stanley, R.C. Cochran, D.L. Harmon, E.S. Vanzant
Kansas Agricultural Experiment Station Research Reports
Four, ruminally cannulated, Hereford x Angus cows were used to study factors associated with feed intake patterns around parturition. Feed intake during the final trimester of gestation was relatively stable, in spite of a noticeable decrease in ruminal capacity. Postpartum feed intake appeared to increase, as did ruminal capacity. Blood progesterone fell after parturition, whereas estradiol did not change except for a large rise around parturition. Some plasma metabolites measured differed before and after calving; however, magnitude and patterns of change do not suggest a direct relationship with intake.