J.  Khotsakdee, K.  Vasupen, S.  Wongsuthavas, S.  Bureenok, A.  Alhaidary, H.E.  Mohamed, A.C.  Beynen, C.  Yuangklang, 
    Rumen Fermentation and Nutrient Digestibility in Goats Fed a Tallow-Rich Ration Fortified with Yeast,
    Research Journal of Biological Sciences,
    Volume 5,Issue 3,
    2010,
    Pages 246-250,
    ISSN 1815-8846,
    rjbsci.2010.246.250,
    (https://makhillpublications.co/view-article.php?doi=rjbsci.2010.246.250)
    Abstract: The hypothesis tested was that supplementation of the ration with yeast would negate the inhibitory effect of high-fat intake on rumen fermentation in goats. In a 3x3 Latin square-design, three rumen-fistulated goats were given free access to grass silage and either a low-tallow concentrate or a high-tallow concentrate without or with added yeast. Feed intake, apparent fiber digestibility, rumen pH and volatile fatty acids were measured. When the goats were fed the high-fat diet without yeast, dry matter intake with silage was significantly higher than when either the low-fat diet or the high-fat diet with yeast was supplied. The apparent digestibilities of macronutrients were not significantly affected by the dietary treatments. Group-mean digestibility of neutral detergent fiber was lowered by 0.4% units after feeding the high-fat diet without yeast and by 1.3% units when the high-fat diet with yeast was supplied. The ruminal pH and concentrations of volatile fatty acids were not influenced by dietary treatment. It is concluded that the addition of yeast to a high-tallow ration did not improve feed intake and rumen function in goats.
    Keywords: Goats;tallow;yeast;rumen fermentation;nutrient digestibility;Thailand