濃厚飼料多給条件における飼料蛋白質の第一胃内分解程度の相互比較

概要

論文の詳細を見る
In order to determine if classification or mutual comparison of feeds in respect of their susceptibility to degradation of protein in the rumen can be made on the basis of the measure-ment of its degradability after incubation for 8 and 24 hours in the rumen by a nylon bag-method, disappearance of crude protein from the bags was measured at both incubation times with 21 feeds using a fistulated cow given 4 kg concentrate and 2 kg rice straw per day. In the results, the order of the extent of degradation of protein among feeds varied considerably between both incubation times. The disappearance rate of protein from 8 to 24 hours was especially high in soybean meal, soy sauce cake, defatted rice bran, corn germ meal and tofu cake, resulting in change in the order of extent of degradation among feeds between both incubation times. Dividing 21 feeds into two groups of the above five feeds and of the remain-der 16 feeds, a coefficient of correlation (r) between 8 and 24 hour-degradabilities in each group was as high as 0.997 and 0.976, respectively. Grounding on these results as well as the value and the order of degradabilities of protein at both incubation times, 21 feeds tested in the present study were grouped into A (1. barley, 2. wheat bran, 3. corn gluten feed), BI (1. linseed meal, 2. rape seed meal, 3. blood meal, 4. distillers feed, 5. meat and bone meal, 6. dehydrated alfalfa meal, 7. corn), B2 (1. soybean meal, 2. soy sauce cake, 3. defatted rice bran, 4. corn germ meal, 5. tofu cake) and C (1. CP 60% fish meal, 2. milo, 3. white fish meal, 4. leaf meal, 5. sake cake, 6. corn gluten meal). Susceptibility to degradation of protein in the rumen is considered to decrease in the numerical order within each group, and probably in the order of either A, Bl and C or A, B2 and C among groups. However, comparison is difficult to make between 131 and B2.
社団法人日本畜産学会の論文

濃厚飼料多給条件における飼料蛋白質の第一胃内分解程度の相互比較

スポンサーリンク

概要

著者

関連論文

スポンサーリンク