动物营养学报2015，Vol.27Issue(5)：1641-1649,9.DOI:10.3969/j.issn.1006-267x.2015.05.037
不同产地全株玉米青贮的瘤胃降解特性与小肠消化率的研究
Rumen Degradation Characteristics and Intestinal Digestibility of Whole Corn Silages from Different Areas
摘要
Abstract
The objective of this study was to research the differences in nutritional value, rumen degradation characteristics and intestinal digestibility of whole corn silages from different areas. Five whole corn silage sam?ples were collected from Gansu ( A) , Shandong ( B) , Sichuan ( C) , Shaanxi ( D) and Shenyang ( E) , and the common nutritional components and amino acid composition of feed samples were analysed. Three perma?nent ruminal cannulated Holstein cows with around 550 kg of body weight were used to evaluate rumen degra?dation characteristics of dry matter ( DM) , crude protein ( CP) , neutral detergent fiber ( NDF) and acid deter?gent fiber ( ADF) , and intestinal digestibility of DM, CP and amino acids ( AA) by nylon bag technique. The results showed that differences were found in common nutritional components, and rumen effective degradabili?ty of DM, CP, NDF and ADF among whole corn silages from different areas. Ranking of the rumen effective degradability of DM, CP, NDF and ADF of whole corn silages from 5 areas from high to low was B＞E＞A＞D＞C, C＞A＞D＞B＞E, B＞A＞D＞C＞E and D＞A＞C＞B＞E, respectively. The intestinal digestibility of DM, CP and each amino acid was different. Ranking of intestinal digestibility of DM, CP and total amino acids ( TAA) of whole corn silages from 5 areas from high to low was C＞A＞D＞B＞E, C＞A＞B＞D＞E and A＞D＞B＞C＞E, respectively. In conclusion, there were large differences in nutritional component contents, rumen degradation parameters and intestinal digestibility of whole corn silages from different areas. In order to use feed resources more effectively and avoid waste, so rapidly accurate methods should be used to measure the contents of nutri?tion components in whole corn silage.关键词
全株玉米青贮/奶牛/瘤胃降解特性/小肠消化率Key words
whole corn silage/dairy cows/rumen degradation characteristics/intestinal digestibility分类
农业科技引用本文复制引用
李洋,李春雷,赵洪波,张永根..不同产地全株玉米青贮的瘤胃降解特性与小肠消化率的研究[J].动物营养学报,2015,27(5):1641-1649,9.基金项目
国家奶牛产业技术体系( CARS?37) （ CARS?37）
