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Asian-Australas J Anim Sci > Volume 12(2); 1999 > Article
Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 1999;12(2): 186-188.
DOI: https://doi.org/10.5713/ajas.1999.186    Published online March 1, 1999.
Effect of Sugar-Beet Pulp Supplementation on Fiber Degradation of Grass Hay in the Rumen of Goats
Y. Masuda, S. Kondo, M. Shimojo, I. Goto
Abstract
This study was conducted to investigate the effects of four levels (0, 10, 20, 40 %) of sugar-beet pulp (SB pulp) supplementation to Italian ryegrass hay (IRG hay) on the fiber degradability of IRG hay in the rumen of goats. The following results were obtained : Degradabilities of DM, NDF, ADF and hemicellulose of IRG hay in the rumen increased significantly (p<0,05) by 10 % level supplementation of SB pulp to IRG hay. This was probably due to the increased numbers (p<0.05) of total viable bacteria, pectin-fermenting, xylan-fermenting and cellulolytic bacteria in the rumen in the increased supply of degradable pctic substances and hemicellulose at 10% level supplementation of SB pulp pectin. In 40% supplementation of SB pulp, ruminal pH was lowered by the fermentation of increased amount of molasses from SB pulp, resulting in the depression of growth of fiber fermenting bacteria and hence the decrease in degradabilities of cell wall fractions. It was suggested from this study that the sugar-beet pulp supplementation to forages at the level of 10% in the total diet increased fiber degradation of forage in the rumen of goats.
Keywords: Sugar-Beet Pulp; Forage Fiber Degradation; Rumen Bacteria


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