CAJ | 학술논문

为使中小奶牛养殖场和奶牛养殖小区的奶牛养殖户用上营养平衡的全混合日粮（TMR），研究利用拉伸膜包裹TMR饲料成品后贮存的效果。该研究对高产奶牛和中产奶牛用两种TMR进行裹包贮存，并于0d、3d、7d、15d、30d和60d分别取样进行裹包贮存外观评定、感官评定及营养物质含量和发酵指标的测定。试验结果表明，两种TMR裹包贮存后外观质量和感官质量良好；随贮存时间的延长，干物质含量有所降低，而粗蛋白、粗脂肪、粗纤维、粗灰分等营养指标有所增加；随贮存时间的延长裹包TMR的pH值显著降低（P〈0．05），氨态氮含量显著上升（P〈0．05）。综合外观和感官评定及各项营养指标、发酵指标的变化，TMR裹包贮存技术可以为TMR饲喂技术在中小奶牛养殖场和奶牛养殖小区中应用提供技术支持。
위사중소내우양식장화내우양식소구적내우양식호용상영양평형적전혼합일량（TMR），연구이용랍신막포과TMR사료성품후저존적효과。해연구대고산내우화중산내우용량충TMR진행과포저존，병우0d、3d、7d、15d、30d화60d분별취양진행과포저존외관평정、감관평정급영양물질함량화발효지표적측정。시험결과표명，량충TMR과포저존후외관질량화감관질량량호；수저존시간적연장，간물질함량유소강저，이조단백、조지방、조섬유、조회분등영양지표유소증가；수저존시간적연장과포TMR적pH치현저강저（P〈0．05），안태담함량현저상승（P〈0．05）。종합외관화감관평정급각항영양지표、발효지표적변화，TMR과포저존기술가이위TMR사위기술재중소내우양식장화내우양식소구중응용제공기술지지。
In order to make total mixed ration （TMR） used in small-scale and dairy cattle raising areas, research was conducted to study the storage effects of TMR after baling. Fresh TMR of High-milk cows and Middle-milk cows were wrapped and baled using stretch film. After 0, 3, 7, 15, 30 and 60 days of storage, appearance and sensory evaluation were carried out, and nutrient contents and fermentation qualities were determined. The results showed that the appearance and sensory characters were well kept during 60 days of storage. Along with the storage time, the dry matter losses during storage, and the nutrient contents of crude-protein, crude-fat, crude- fiber, crude-ash were increased compared with fresh TMR during storage. The pH value of baled TMR was decreased significantly （P〈0.05） along with the proceeding of storage. The NH3-N content of TMR was increased significantly（P〈0.05） during storage. These results indicated that baling technology can be used to achieve the effective storage of TMR. TMR diets can be used in the small-scale and dairy cattle raising areas.