草业学报2013，Vol.22Issue(3)：116-123,8.DOI:10.11686/cyxb20130315
添加糖蜜对青稞秸秆和多年生黑麦草混合青贮发酵品质及营养价值的影响
Effect of molasses addition on fermentation and nutritive quality of mixed silage of hulless barley straw and perennial ryegrass in Tibet
摘要
Abstract
To investigate enlargement of feed sources in Tibet,mixtures of hulless barley straw and perennial ryegrass (6 ∶ 4) were ensiled with molasses at four levels (0,3％,4％,and 5％ of fresh weight).Triplicate silos per treatment were opend on 7,14,30,and 60 days after ensiling and the fermentation characteristics and in vitro degradability of silages were analysed.Molasses addition quickly and greatly enhanced LA (lactic acid) production but decreased the pH value within 14 days of ensiling.Molasses supplemented silages showed higher (P＜0.05) LA/AA (acetic acid),LA and WSC (water soluble carbohydrate) contents but lower pH values and AN (ammonia nitrogen)/TN (total nitrogen) (P＜0.05) than the control silage.After 60 days ensiling,silages with added molasses had higher CP (crude protein),lower NDF (neutral detergent fiber) and ADF (acid detergent fiber) contents than the control,and the in vitro degradability of all silages were higher than that of fresh material.These results indicate that 3 ％ molasses addition can effectively improve the fermentation and nutitive quality of mixed silages.关键词
糖蜜/青稞秸秆/多年生黑麦草/发酵品质/营养价值Key words
molasses / hullessbarley straw (Hordeum vulgare) / perennial ryegrass (Lolium perenne) / fermentation quality/ nutritive quality分类
农业科技引用本文复制引用
原现军,王奇,李志华,余成群,下条雅敬,邵涛..添加糖蜜对青稞秸秆和多年生黑麦草混合青贮发酵品质及营养价值的影响[J].草业学报,2013,22(3):116-123,8.基金项目
国家科技支撑计划(2010BAE00739-03)和西藏自治区重大科技专项(XZ20093ZD)资助. （2010BAE00739-03）
