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Study on the utilization of rice straw by sheep: 1. The effect of soybean meal supplementation on the voluntary intake of rice straw and ruminal fermentation



Study on the utilization of rice straw by sheep: 1. The effect of soybean meal supplementation on the voluntary intake of rice straw and ruminal fermentation



Asian-Australasian Journal of Animal Sciences 5(4): 687-693



The study was conducted to investigate the effect of soybean meal (SBM) supplementation on the voluntary intake of rice straw and ruminal fermentation characteristics. Balance trials were conducted with three Japanese Corriedale wethers fed a rice straw alone (control), rice straw supplemented with 75 and 150 g of SBM/day in a 3 times 3 latin square design. Voluntary intake of rice straw in sheep fed both levels of SBM supplemented diets was significantly higher (p lt 0.05) than that in sheep fed control diet. Crude protein digestibility was significantly increased (p lt 0.05), but organic matter, crude fiber, neutral detergent fiber and acid detergent fiber digestibilities were not affected by SBM supplementation. Nitrogen balance was positive in sheep on both levels of SBM supplemented diets, but negative in animals on the control diet. Rumen ammonia and blood urea-nitrogen concentrations increased (p lt 0.05) as increasing level of SBM. Total volatile fatty acids, acetate, propionate, butyrate and valerate concentrations in rumen fluid were also significantly increased (p lt 0.01), but ruminal pH was decreased (p lt 0.05) by SBM supplementation.

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Accession: 009482080

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