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Kansas Agricultural Experiment Station Research Reports
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; Microbial
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Changes In Ruminal Microbial Populations In Transition Dairy Cows (2002), A.F. Park, Evan C. Titgemeyer, R.C. Cochran, J.M. Defrain
Changes In Ruminal Microbial Populations In Transition Dairy Cows (2002), A.F. Park, Evan C. Titgemeyer, R.C. Cochran, J.M. Defrain
Kansas Agricultural Experiment Station Research Reports
We used four ruminally fistulated, multiparous, pregnant Holstein cows to delineate microbial adaptations 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, respectively. Microbial samples …