Strategies to decrease incidence of fatty liver in dairy cows | Posted on:2012-03-01 | Degree:Ph.D | Type:Dissertation | University:University of Illinois at Urbana-Champaign | Candidate:Richards, Bruce F | Full Text:PDF | GTID:1453390008991010 | Subject:Agriculture | Abstract/Summary: | | Holstein cows were used to explore aspects of dietary strategies to decrease lipid accumulation in the liver after parturition. In experiment 1, 75 cows (30 primiparous) were fed controlled-energy, high-forage (CEHF) diets or were overfed energy (OVERFED) from dry-off to parturition, or CEHF for the first 40 d after dry-off, followed by OVERFED for the last approximately 20 d before parturition (2-stage). During the periparturient period, cows fed CEHF had lower lipid accumulation in the liver than OVERFED cows and there was no advantage to using the 2-stage feeding strategy. In experiment 2, 16 cannulated mulitparous cows were assigned to one of 4 feeding combinations. Cows were fed CEHF throughout the entire dry period or fed with a 2-stage dietary strategy. Half of each group of cows (CEHF or 2-stage) were fed a diet with monensin added; whereas, the other half were fed a diet without monensin. Monensin tended to modulate rumen fermentation, particularly in cows fed the 2-stage diet strategy. Supplemental monensin increased milk production and had neutral or positive effects on rumen fermentation and rumen dynamics. Neither the higher energy closeup diet in the 2-stage strategy nor monensin supplementation affected ruminal papillae length. In these experiments, there were few advantages demonstrated for the 2-stage strategy compared with the single-group CEHF strategy during the dry period. | Keywords/Search Tags: | Cows, CEHF, Liver, 2-stage, Strategy, OVERFED, Diet | | Related items |
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