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Article| Volume 77, ISSUE 1, P196-204, January 1994

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Wet Brewers Grains for Lactating Dairy Cows During Hot, Humid Weather1

  • Author Footnotes
    2 Reprint requests.
    J.W. West
    Footnotes
    2 Reprint requests.
    Affiliations
    Department of Animal and Dairy Science, University of Georgia, Coastal Plain Station, Tifton 31793
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  • L.O. Ely
    Affiliations
    Department of Animal and Dairy Science, University of Georgia, Athens 30602
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  • Author Footnotes
    3 Also Department of Microbiology.
    S.A. Martin
    Footnotes
    3 Also Department of Microbiology.
    Affiliations
    Department of Animal and Dairy Science, University of Georgia, Athens 30602
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  • Author Footnotes
    1 Supported by the Miller Brewing Company, Milwaukee, WI, Crown Co-Products, Plains, GA, and by Hatch and state funds allocated to the Georgia Agricultural Experiment Station.
    2 Reprint requests.
    3 Also Department of Microbiology.
Open ArchiveDOI:https://doi.org/10.3168/jds.S0022-0302(94)76942-3
Wet Brewers Grains for Lactating Dairy Cows During Hot, Humid Weather1
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      Abstract

      Twenty lactating Jersey cows were offered diets containing 0, 15, or 30% wet brewers grains or 30% wet brewers grains plus liquid brewers’ yeast during hot, humid weather. The DMI was not different, even though diets with 30% wet brewers grains contained only 35.5% DM and approximately 50 versus 36.8% NDF for the control diet. Yields of milk and FCM did not differ for cows offered the control diet versus wet brewers grains or diets with 15 versus 30% wet brewers grains, but milk yield for diets with 30% wet brewers grains was greater with added liquid brewers’ yeast than without it. Milk fat percentage was not different, but milk protein percentage was lower, for diets with wet brewers grains than for controls and for 30% wet brewers grains than for 15% wet brewers grains. Serum urea N was lower for control cows than for cows receiving the diets with wet brewers grains. Feed cost per cow was lower for wet brewers grains versus the control diet, and income over feed cost was greater for diets with 30 versus 15% wet brewers grains. Large quantities of wet brewers grains can be added to the diet during hot weather without depressing DMI.

      Key words

      Abbreviation key:

      LBY (liquid brewers’ yeast), PBG (pressed brewers grains), SP (standardization period), THI (temperature-humidity index), TP (treatment period), WBG (wet brewers grains)

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      Article info

      Publication history

      Accepted: July 29, 1993
      Received: April 23, 1993

      Identification

      DOI: https://doi.org/10.3168/jds.S0022-0302(94)76942-3

      Copyright

      © 1994 American Dairy Science Association. Published by Elsevier Inc.

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