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Dairy Science

Kansas State University Libraries

Kansas Agricultural Experiment Station Research Reports

2002

2002; Kansas Agricultural Experiment Station contribution; no. 03-121-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 898; Dairy; Transition; Dairy cow; Rumen fermentation

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Characteristic Changes Of Ruminal Fermentation In Transition Dairy Cows (2002), A.F. Park, Evan C. Titgemeyer, R.C. Cochran, J.M. Defrain Jan 2002

Characteristic Changes Of Ruminal Fermentation In Transition Dairy Cows (2002), A.F. Park, Evan C. Titgemeyer, R.C. Cochran, J.M. Defrain

Kansas Agricultural Experiment Station Research Reports

Four-ruminally fistulated, multiparous, pregnant Holstein cows were used to delineate changes in ruminal fermentation in dairy cows as they experienced the transition from one lactation to the next. Diets consisted of typical far-off and close-up diets, a late lactation diet containing wet corn gluten feed (20% DM) and an alfalfa hay-corn silage based early lactation diet. Calculated NEL (Mcal/lb), measured crude protein (%), and diet digestibilities (%; based on steers fed at 2% of BW) were: 0.78, 18.7, 74.1; 0.70, 11.5, 66.2; 0.74, 15.6, 71.0; 0.73, 18.4, 70.7 for late lactation, far-off dry, close-up dry, and early lactation diets, respectively. …