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Effect of Basal Diet on Sheep Rumen Degradability of Different Feedstuffs

  • M.A. Chaso (a1), T. Manso (a1), F.J. Giráldez (a1) and A.R. Mantecón (a1)


The provision of grain supplements to ruminants provide extra fermentable organic matter for the rumen microbial biomass, but often results in a lower whole efficient of ruminal digestion (Obara et al., 1991; Weakley et al., 1983). The present study was conducted to evaluate the effect of different basal diets on rumen degradability of several feedstuffs.

Ruminal digestion of three feedstuffs - soybean meal (SBM), lucerne hay (LH) and barley straw (BS) - was determined by in saccomethod according a 2 × 3 factorial design defined by 2 basal diets - lucerne hay (H) or lucerne hay plus barley (40:60; HB) - and three churra ewes fitted with ruminal cannula.



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Obara, Y., Dellow, D.W. and Nolan, J.V. 1991. The influence of Energy-Rich Supplements on Nitrogen Kinetics in Ruminants. In: Physiological Aspects of Digestion and Metabolism in Ruminants, pp: 515540. Ed. Tsuda., T., Sasaki, Y. and Kawashima, R.. Academic Press, Inc., London.
Owens, F.N. and Goetsch, A.L. 1988. Ruminal fermentation. In: The ruminant animal, pp: 145171. Ed. Church, D.C.. Prentice Hall, New Jersey.
Satter, L.D. and Slyter, L.L. 1974. Effect of ammonia concentration on rumen microbial protein production “in vitro”. Br. J. Nutr., 32, 199208.
Stewart, C.S. 1977. Factors affecting cellulolytic activity of rumen contents. Appl. Environ. Microbiol., 33, 497502.
Weakley, D.C, Stern, M.D. and Satter, L.D. 1983. Factors affecting disappearance of feedstuffs from bags suspended in the rumen. J. Anim. Sci., 56, 493507.


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