| 摘要: |
| 研究全混合日粮(TMR)裹包贮存效果及裹包TMR饲喂对泌乳末期奶牛生产性能和血液生化指标的影响。TMR饲粮水分含量调整为40%、50%和60%,利用裹包技术将新鲜制作的TMR饲粮进行裹包,分别存放0、3、7、15和30 d后进行营养物质含量和发酵指标的测定。结果表明:随着贮存时间的延长,TMR饲粮中的营养物质含量由于干物质的损失而有相应的增加,裹包TMR饲粮的pH值显著降低(P<0.05),氨态氮含量显著增加(P<0.05),且随着TMR饲粮初始水分含量增高,pH值降得越低(P<0.05),氨态氮生成量越高(P<0.05)。另外,选择24头泌乳末期荷斯坦奶牛,以常规饲喂(精粗分开)作为对照组,比较裹包TMR饲喂对奶牛生产和血液指标的影响。结果表明:裹包TMR饲喂比对照可显著提高产奶量(14.37 kg/d vs.12.38 kg/d)和产奶效率(0.84vs.0.72)(P<0.05),除血糖(P<0.05)外,其他血液生化指标与对照差异均不显著(P>0.05)。因此认为,裹包技术可以用来在规模化牛场和大型饲料厂进行TMR饲粮的裹包生产,从而实现TMR饲粮的有效贮存和运输,以达到中、小规模养牛场和个体养殖户也... |
| 关键词: 裹包TMR 贮存 奶牛 生产性能 血液指标 |
| DOI：10.11841/j.issn.1007-4333.2009.03.059 |
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| 基金项目:国家“十一五”科技支撑计划资助项目(2006BAD12B08,2006BAD04A03) |
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| Effect of storing Total Mixed Ration(TMR) as wrapped round bales and its influence on production performance and blood indices of lactating dairy cows |
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| Abstract: |
| The objective was to study the storage effect of total mixed ration(TMR) wrapped by stretch film and the effect of baled TMR on milk production,milk composition,and blood indices of late lactation dairy cows.The moisture contents of the TMR were adjusted to 40%,50%,and 60%,respectively.Fresh TMR were wrapped and baled using stretch film.After 0,3,7,15,and 30 days storage,the nutrient content and fermentation quality were determined.The results demonstrated that the nutrient content increased compared with f... |
| Key words: baled TMR storage dairy cow milk production blood indices |
