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Journal of Dairy Science Vol. 84 No. 11 2478-2485
© 2001 by American Dairy Science Association ®
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Evaluation of Wet Corn Gluten Feed in Diets for Lactating Dairy Cows

M. J. VanBaale 1, J. E. Shirley 1, E. C. Titgemeyer 1, A. F. Park 1, M. J. Meyer 1, R. U. Lindquist 2, and R. T. Ethington 2

1 Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506
2 Minnesota Corn Processors Inc., Marshall, MN 56258

Two experiments were conducted to evaluate responses of primiparous and multiparous Holstein cows to diets containing wet corn gluten feed (WCGF). In both experiments, WCGF replaced a mix of alfalfa hay, corn silage, and corn grain. In experiment 1, 32 primiparous Holstein cows (four pens with eight cows/pen) were used in two 2 x 2 Latin squares with 28-d periods. Cows were housed in free stalls and fed diets containing 0 or 20% WCGF dry matter (DM) basis. Cows fed WCGF consumed more DM and produced more energy-corrected milk (ECM) than controls. Production efficiency (ECM/DM intake) was not affected, but yield of milk components was improved by WCGF. In experiment 2, 24 multiparous Holstein cows were used in six 4 x 4 Latin squares with 28-d periods to determine the optimal dietary inclusion rate for WCGF. Cows were housed in a tie-stall barn and fed a total mixed ration twice daily. Treatments were 0, 20, 27.5, and 35% WCGF (DM basis). Cows fed WCGF produced more ECM than controls, but ECM did not differ among cows fed WCGF diets. Cows fed 20 and 27.5% WCGF consumed more DM as a percentage of body weight than those fed either 0 or 35% WCGF. Cows fed WCGF produced ECM more efficiently than controls. Percent milk fat was lower, but fat yield was not different when WCGF was added to diets. Milk protein and lactose yields were higher when WCGF was fed. Plasma glucose, alpha-amino N, and triglyceride concentrations were similar among diets in both experiments, but plasma urea N was higher for cows fed WCGF in experiment 2.

Key Words: dairy cows • wet corn gluten feed

Submitted on February 14, 2001
Accepted on June 18, 2001




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