| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1986: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1985: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Research Abstract |
It is very important to measure protein turnover rates of muscle for improving meat production in domestic animals. The present study was undertaken to examine the effect of dietary protein sources and Salinomycin on beakdown and synthetic rates of muscle protein by estimating urinary output of 3-methyhistidine in ruminants. Results showed that beakdown rate of muscle protein of animals fed on soybean meal diet is 1.12 %/d and, in contract to this, that of animals given a diet of corn gluten meal is much higher value of 1.80 %/d. And the breakdown rate of animals administered Salinomycin showed higher rate of 1.58 %/d. These results suggested that, when animals were given a protein diet (soybean meal) which is degraded easily in rumen, the amino acids of the diet were utilized efficiently in animals, but when given a protein (corn gluten meal) which does not show good degradability in rumen, significant amount of amino acids required to animals is supplemented by breakdown of body protein, especially, muscle protein because of a short supply of amino acids from intestine. Further, results showed that Salinomycin stimulates both of breakdown and synthesis of muscle protein.
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