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가축에 대한 볏짚사료이용 증진에 관한 연구 제4보 볏짚의 소화율을 지배하는 구조 탄수화물의 영향
김강식,아부량,굴정청,구강훤일 ( Kang Sik Kim,Akira Abe,Satoshi Horii,Kenichi Kameoka ) 한국축산학회 1976 한국축산학회지 Vol.18 No.3
In order to investigate the factors suppressing the digestibility of rice straw the study was carried out for searching the effects influencing the digestibility of structural carbohydrates in roughages. Employing Italian ryegrass, oat hay, rice straw and alkali treated rice straw as basic materials for neutral detergent fiber (NDF), in vivo digestion trial by goat, in vitro digestion study by unification of the nitrogen level, and the hydrolysis experiment with 5% sulfate solution were conducted. The experimental results obtained are as follows: 1. The crystalization rates of hexosan in experimental materials by dilute acid hydrolysis were very high, those in rice straw, Italian ryegrass and oat hays were similar each other and that is alkali-treated rice straw showed 6% more than those in the others. 2. The relationship between crystalization rate of hexosan (X) and L-cellulose content in structural carbohydrates (Y) showed the equation of X=1.365Y. 3. The crystalization rate by dilute acid hydrolysis, L-cellulose contents, and the other factors as the polymerization quality of structural carbohydrates did not affect the digestibility of roughages, however it was considered that those influenced the initial reaction rate. 4. The content of L-cellulose in rice straw was higher than those in the other hays. Especially the content of L-cellulose in alkali-treated rice straw was higher by nearly 7% than those in the others. 5. The high correlationship between in vivo NDF digestibility and NDF-lignin content in material and between the former and NDF-lignin+NDF-ash remained were recognized.
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