动物营养学报2019，Vol.31Issue(8)：3612-3620,9.DOI:10.3969/j.issn.1006⁃267x.2019.08.022
构树不同部位与奶牛常用粗饲料瘤胃降解特性对比研究
Comparison of Rumen Degradation Characteristics among Different Parts of Paper Mulberry and Commonly Used Roughages for Dairy Cows
摘要
Abstract
The aim of this study was to evaluate the rumen degradation characteristics of different parts of paper mulberry ( paper mulberry leaves, paper mulberry twigs and leaves and paper mulberry twigs) and commonly used roughage ( alfalfa hay and oat hay) for dairy cows. Three Chinese Holstein cows with permanent ruminal cannulas were used to evaluate the ruminal degradability of dry matter ( DM) , crude protein ( CP) , neutral de?tergent fiber ( NDF) and acid detergent fiber ( ADF) by nylon?bag technique. The results showed as follows:1) the CP content in paper mulberry leaves was significantly higher than that in alfalfa hay ( P＜0.05) , while the NDF content was significantly lower than that in alfalfa hay ( P＜0.05). There was no significant difference in CP content between paper mulberry twigs and leaves and alfalfa hay ( P＞0.05) , while the NDF content in paper mulberry twigs and leaves was significantly lower than that in alfalfa hay ( P＜0.05). There was no sig?nificant difference in CP content between paper mulberry twigs and oat hay ( P＞0.05) , while the NDF content in paper mulberry twigs was significantly higher than that in oat hay ( P＜0.05 ). 2 ) There was significant difference in the DM effective degradability among five kinds of feedstuffs ( P＜0.05) , and from high to low were paper mulberry leaves, paper mulberry twigs and leaves, alfalfa hay, oat hay and paper mulberry twigs. There was significant difference in the CP effective degradability among five kinds of feedstuffs ( P＜0.05) , and from high to low were alfalfa hay, paper mulberry leaves, paper mulberry twigs and leaves, oat hay and paper mulberry twigs. The NDF effective degradability of paper mulberry leaves was the highest, and signifi?cantly higher than that of other four feedstuffs ( P＜0.05) , but there was no significant difference in NDF effec?tive degradability between paper mulberry twigs and leaves and oat hay ( P＞0.05 ). There was significant difference in the ADF effective degradability among five kinds of feedstuffs ( P＜0.05) , and from high to low were paper mulberry leaves, oat hay, alfalfa hay, paper mulberry twigs and leaves and paper mulberry twigs. In conclusion, different parts of paper mulberry have potential value for unconventional feed resources in dairy cows.[ Chinese Journal of Animal Nutrition, 2019, 31(8) :3612?3620]关键词
构树/营养成分/奶牛/尼龙袋技术/瘤胃降解率Key words
paper mulberry/nutrition composition/dairy cows/nylon⁃bag technique/ruminal degradability分类
农业科技引用本文复制引用
刘祥圣,王琳,宁丽丽,冯宝宝,林淼,赵国琦..构树不同部位与奶牛常用粗饲料瘤胃降解特性对比研究[J].动物营养学报,2019,31(8):3612-3620,9.基金项目
现代农业产业技术体系专项资金资助( CARS⁃36) （ CARS⁃36）
