动物营养学报2011，Vol.23Issue(9)：1577-1583,7.DOI:10.3969/j.issn.1006-267x.2011.09.017
不同吸收剂对甜菜渣青贮品质及有氧稳定性的影响
Different Absorbents Affect Silage Quality and Aerobic Stability of Beet Pulp
摘要
Abstract
The study was conducted to investigate the effects of absorbents (dry rice straw, dry corn stalk and dry pods) on the silage quality and aerobic stability of beet pulp. The treatments in this study consisted of 5 groups; wet beet pulp silage without absorbent was used as the negative control group (moisture was 82% ); dry rice straw (rice straw group), dry corn stalk (corn stalk group), dry pods (pods group) and wheat bran (positive control group) were added into wet beet pulp by 20% (fresh weight basis), respectively. The mix tures (moisture was about 70% ) were ensiled. There were 10 replicates in each group and 1 kg per replicate. The results showed as follows : 1) the addition of absorbents significantly increased ammoniacal nitrogen (NH3 -N) /total nitrogen (P < 0.05), lactic acid content ( P < 0.01) and acetic acid content ( P < 0.01) , but significantly decreased loss rates of dry matter and water-soluble carbohydrate (WSC) (P <0. 05) , as well as the content of butyric acid, especially in rice straw group and pods group, the butyric acid contents in which were unidentified. 2) The addition of absorbents didn' t affect the nutrient composition of beet pulp silage. 3 ) The addition of absorbents significantly increased the WSC content after different exposure time in air and the aerobic stability of beet pulp (P < 0.05), the aerobic stability of pods group was 216 h, which was the highest among all groups. The results indicate that the addition of absorbents improves the silage quality, reduces the nutrient loss and improves aerobic stability of beet pulp silage; to sum up, corn stalk and pods are two kinds of optimal absorbents for silage.关键词
甜菜渣/吸收剂/青贮品质/有氧稳定性Key words
beet pulp/ absorbent/ silage quality/ aerobic stability分类
农业科技引用本文复制引用
张微微,张永根..不同吸收剂对甜菜渣青贮品质及有氧稳定性的影响[J].动物营养学报,2011,23(9):1577-1583,7.基金项目
农业部现代农业(奶牛)产业技术体系(nycytx-02-02) （奶牛）
