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    Effect of feeding varying levels of Amaferm (culture of Aspergillus oryzae) on performance of dairy cows

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    Author
    Denigan, Mary Elizabeth, 1966-
    Issue Date
    1991
    Keywords
    Agriculture, Animal Culture and Nutrition.
    Advisor
    Huber, John T.
    
    Metadata
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    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Amaferm, a fermentation extract of Aspergilluz oryzae, was fed as a top dressing to dairy cows at 0, 1.5, 3, 6g/d. in two lactation trials. Trial I, conducted during winter-spring, 1989, for 80d, used forty cows in early lactation. Trial II, with twenty-four mid-lactation cows, received similar treatments for 60d in the summer of 1989. Measurements for both trials included milk yield, feed intake, body weight and rectal temperature. Respiration rates were determined for trial II and digestion coefficients for CP, NDF and DM were determined using Cr2O3 as a digesta marker for trial I. In trial I, cows fed 1.5g and 3g Amaferm/d had a higher DMI (P < .06) than cows receiving 0 or 6g Amaferm/d. Respiration rates were significantly higher (P < .05) for 3g Amaferm/d cows. Other parameters were not affected by treatment. These results contrasted previous studies in which 3g Amaferm/d stimulated milk production.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Animal Sciences
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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