| 不同处理方式的苜蓿草对犊牛生长性能、瘤胃发酵及微生物蛋白合成的影响 |
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| 引用本文： | 刘静霖,薛瑞婷.不同处理方式的苜蓿草对犊牛生长性能、瘤胃发酵及微生物蛋白合成的影响[J].中国饲料,2022,1(4):61-64. |
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| 作者姓名： | 刘静霖 薛瑞婷 |
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| 作者单位： | 刘静霖，薛瑞婷（吕梁学院，山西吕梁 033000） |
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| 摘 要： | 文章旨在评估苜蓿草的不同处理方式及饲料形式对犊牛生长性能、瘤胃发酵及微生物蛋白合成的影响.试验将60头均重为40.01 kg的刚出生犊牛随机分为4组,每组5个重复,每个重复3头牛.试验日粮采用多因素方差设计,2种苜蓿草处理方式(切碎和制粒)和2种饲料形式(粉料和颗粒料).T1组为切碎苜蓿草+粉料,T2组为制粒苜蓿草+粉...
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| 关 键 词： | 苜蓿草 犊牛 生长性能 瘤胃发酵 微生物蛋白 |
Effects of different treatments of alfalfa on growth performance,rumen fermentation and microbial protein synthesis of calves |
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| LIU Jinglin,XUE Ruiting.Effects of different treatments of alfalfa on growth performance,rumen fermentation and microbial protein synthesis of calves[J].China Feed,2022,1(4):61-64. |
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| Authors: | LIU Jinglin XUE Ruiting |
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| Institution: | (LvLiang University,Lvliang,Shanxi Province 033000,China) |
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| Abstract: | The objective of this study was to evaluate the effects of alfalfa grass treatment and feed form on growth performance,rumen fermentation and microbial protein synthesis of calves.Sixty newborn calves with an average body weight of 40.01 kg were randomly divided into 4 groups with 5 replicates per group and 3 calves per replicate.The experimental diet was designed with multivariate variance,two alfalfa treatments(chopped and granulated)and two feed forms(powder and granulated).Group T1 was composed of chopped alfalfa grass+powder,group T2 was composed of granulated alfalfa grass+powder,group T3 was composed of chopped alfalfa grass+granular,and group T4 was composed of granulated alfalfa grass+granular.Results:Regardless of alfalfa grass treatment,the body weight at 70 d,average daily feed intake and daily gain at 1~50 d and 1~70 d in pellet diet group were significantly higher than those in powder diet group(P<0.05).The rumen ammonia nitrogen concentration of calves in total mixed diet with powder was significantly higher than that in granular diet group(P<0.05).The excretion of allantoin and purine derivatives of calves in T3 group was significantly higher than that in other groups(P<0.05),and regardless of alfalfa grass treatment,the excretion of urea nitrogen in powder group was significantly higher than that in pellet group(P<0.05),but the microbial protein synthesis was significantly lower than that in pellet group(P<0.05).Conclusion:No matter how alfalfa grass is treated,pellet mixed diet can improve the growth performance,reduce urinary nitrogen excretion,increase nitrogen efficiency and microbial protein synthesis of calves. |
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| Keywords: | alfalfa calves growth performance rumen fermentation microbial protein |
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