title: Effect of prepartum energy, body condition, and sodium bicarbonate on health and blood metabolites of holstein cows in early lactation.
abstract: Effects of prepartum energy and of postpartum sodium bicarbonate (0, .75% DM) on health were studied in two trials. In trial 1, 36 cows consumed either 102, 131, or 162% of their energy requirement in the dry period. Postpartum glucose and D(-)-3-hydroxybutyrate levels indicated that 131% group (between wk 1 and 2) and 162% group (over the first 4 wk) were closer to a ketotic state than treatment groups at other times. Displaced abomasums occurred more frequently in the 162% group than either the 102 or 131 group. Sodium bicarbonate did not alter the health. In trial 2, 40 cows were used to evaluate the effects of prepartum energy for a longer period. Energy treatments imposed in late lactation and in the dry period were 1) cows fed to requirement in both periods; 2) cows overfed in the first and underfed in the second period; 3) cows fed to requirement in the first and overfed in the second; 4) cows overfed in both periods. Blood metabolites and health measures were not affected by energy or sodium bicarbonate treatments. Overconsumption of energy by prepartum cows should be avoided; however, for a short period, overconsumption did not produce major health problems.
authors.affiliation: Department of Animal and Poultry Science, University of Guelph, Ontario.
authors.forename: Y
authors.initials: Y
authors.lastname: Boisclair
authors.forename: D G
authors.initials: DG
authors.lastname: Grieve
authors.forename: O B
authors.initials: OB
authors.lastname: Allen
authors.forename: R A
authors.initials: RA
authors.lastname: Curtis
mesh_terms: D000818:Animals; D001639:Bicarbonates / Q000494:pharmacology*; D002417:Cattle / Q000378:metabolism*; D004734:Energy Metabolism; D005260:Female; D007774:Lactation / Q000097:blood / Q000187:drug effects / Q000378:metabolism*; D049590:Postpartum Period / Q000097:blood / Q000187:drug effects / Q000378:metabolism*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000097:blood / Q000187:drug effects / Q000378:metabolism*; D012964:Sodium / Q000494:pharmacology*; D017693:Sodium Bicarbonate
chemical_list: D001639:Bicarbonates; D017693:Sodium Bicarbonate; D012964:Sodium