15%タンパク質飼料を等栄養素量給与したニワトリヒナの成長および窒素利用性に及ぼす飼料中セルロース含量の影響 Effects of Dietary Cellulose Levels on Growth and Nitrogen Utilization in Young Chicks Fed Equal Amounts of Nutrients of a 15% Protein Diet
This study was conducted to examine effects of dietary cellulose levels on growth and nitrogen utilization in young chicks fed equal amounts of nutrients of a 15% protein diet. Body weight gain significantly increased with an increase in dietary cellulose level until 3.5%, then decreased linearly up to an inclusion of 20% of cellulose in the diet (3.5 vs. 0, 10 or 20%, P<0.05). Feed efficiency was not influenced by dietary cellulose levels from 0 to 5%, but decreased by 10% and more dietary cellulose levels(10 vs. 1.5, 3.5 or 5%, P<0.05; 20 vs. 0, 1.5, 3.5 or 5%, P<0.05). Nitrogen(N) retention, N retention rate and retention rate of absorbed N were significantly increased by 1.5% cellulose level (P<0.05), then significantly decreased by 3.5% and more dietary cellulose levels (P<0.05). Apparent digestibility of dietary protein was not influenced by changes in dietary cellulose level. It is concluded that the highest rates of growth and N retention and retention rate are obtained by 1.5% dietary cellulose, and lowered by 3.5% and more dietary cellulose levels when protein intake is restricted to 15% crude protein in chicks.
- 日本畜産學會報 = The Japanese journal of zootechnical science
日本畜産學會報 = The Japanese journal of zootechnical science 69(1), 65-68, 1998-01-25
Japanese Society of Animal Science