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Journal of Dairy Science Vol. 73 No. 10 2916-2921
© 1990 by American Dairy Science Association ®
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Influence of Moisture Content of Mixed Rations on Feed Intake and Milk Production of Dairy Cows

P. H. Robinson 1, P. L. Burgess 1, and R. E. McQueen 1

1 Agriculture Canada Research Station, PO Box 20280, Fredericton, New Brunswick E3B 4Z7

Rations with target DM proportions of 35.45, and 65%, attained by soaking the grain mix in water for 24 h, were fed to 46 mid to late lactation, multiparturient dairy cows in two experiments (Experiment 1, 35 and 45% DM; Experiment 2, 45 and 60% DM) to examine the effect of DM percentage of the totally mixed ration on intake and production of cows. Water-soaked concentrate and alfalfa silage were mixed daily and fed ad libitum. Dry matter intake and milk yield and composition were not influenced by the moisture content of the mixed ration in either experiment. Ruminal pH, ammonia N concentration, total VFA , and molar proportions of individual VFA also were not influenced by ration DM in either experiment. Results suggest that rumen water efflux, as influenced by addition of water to the concentrate portion of the mixed ration, is not a factor limiting intake in dairy cows fed high moisture mixed rations.

Key Words: rumen water efflux • dairy cow • high moisture feeds

Submitted on February 14, 1990
Accepted on May 9, 1990




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T. R. Dhiman, H. R. Bingham, and H. D. Radloff
Production Response of Lactating Cows Fed Dried Versus Wet Brewers' Grain in Diets with Similar Dry Matter Content
J Dairy Sci, September 1, 2003; 86(9): 2914 - 2921.
[Abstract] [Full Text] [PDF]


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Copyright © 1990 by the American Dairy Science Association ®.