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ARS Home » Midwest Area » Madison, Wisconsin » U.S. Dairy Forage Research Center » Research » Publications at this Location » Publication #89691
Title: EFFECTS OF MOISTURE LEVEL AND PARTICLE SIZE OF CORN GRAIN ON NUTRIENT UTILIZATION AND MILK PRODUCTION OF LACTATING DAIRY COWS

Author
item REIS, RONALDO - UNIV OF WISCONSIN-MADISON
item SAN EMETERIO, FRANCISCO - UNIV OF WISCONSIN-MADISON
item CAMPOS, WARLEY - STUDY INTERN-BRAZIL
item Satter, Larry

Submitted to: Journal Dairy Science Supplement
Publication Type: Abstract Only
Publication Acceptance Date: 7/31/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The objective was to evaluate the effect of corn source on nutrient use, milk yield and ruminal fermentation. Twelve rumen fistulated cows were arranged in two 6 X 6 Latin squares with 21 d periods. Treatments were dry shelled corn (DSC), high moisture shelled corn (HMSC) or high moisture ear corn (HMEC) that were coarsely ground (CG dgw 3.83 mm) or finely ground (FG Gdgw 1.15). TMR contained 46% forage and 54% concentrate and were fed once (1X) or twice (2X) daily according to the square. Orthogonal contrasts compared moisture level, presence of cob and fineness of grind. Ruminal NH3 and Ac:Pr ratio were decreased and total VFA and starch digestibility were increased (P<.05) by corn moisture and fine grinding with both 1X and 2X feeding. Moisture, fine grind and absence of cob improved milk yield (P<.05) when cows were fed 2X.