Authors : M. Kazemi , A.M. Tahmasbi , R. Valizadeh , M. Danesh Mesgaran and A.A. Naserian
Abstract: An experiment was carried out to evaluate the substitution of Barley distillers' Grains (BG) ensiled by different level molassed sugar Beet Pulp (BP) with of corn silage on milk production and health of dairy cows. A total 18 Holstein dairy cows (86±10 days postpartum 600±20 kg BW), were randomly assigned to 3 treatments in a balanced completely randomized design (repeated measures). Three diets were formulated to evaluate the replacement of 30% corn silage by an ensiled mixture of BG with and without BP. Treatments were an ensiled mixture of 60% BG with 40% BP (BGBP40%), an ensiled mixture of 80% BG with 20% BP (BGBP20%) and BG ensiled without BP (BGBP0%). Experimental diets contained, 40% forage (60:40, corn silage: Alfalfa hay) and 60% concentrate. Cows were fed a total mixed ration and milked 3 times daily. Diet concentrations of NDF, ADF and CP were 33.2, 19.6 and 16.4% DM (for BGBP40%), 33.7, 20 and 16.8% DM (for BGBP 20%) and 33.8, 20.5 and 16.8% DM (BGBP 0%), respectively. The feed intakes, daily milk yield and milk composition were not significantly different between treatments. There was no significant effect of treatments on rumen pH and NH3-N. Also, there was no significant effect on blood plasma metabolites. Partial substitution BG ensiled with or without BP for corn silage did not have any negative effect on the performance of Holstein dairy cows.
M. Kazemi , A.M. Tahmasbi , R. Valizadeh , M. Danesh Mesgaran and A.A. Naserian , 2009. Effect of Ensiled Barley Distillers` Grains for Holstein Dairy Cows. Journal of Animal and Veterinary Advances, 8: 807-813.