过瘤胃蛋氨酸对舍饲滩羊消化代谢的影响
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摘要
将体况良好、年龄体重相近的20只滩羊随机分为5组,每组4只,独笼饲养。5组试验羊的日粮精粗比为3.7,其中粗饲料按纤维素酶处理法处理后的荞麦秸秆40:玉米青贮60组合进行配制饲养。试验Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ组在基础日粮的基础上,分别添加0、1.5、3、4.5、6 g/d过瘤胃蛋氨酸。结果表明,添加4.5 g/d过瘤胃蛋氨酸组干物质表观消化率最高,且对试验羊的氮利用率与试验Ⅰ组有极显著的影响(P<0.01)。试验Ⅳ组(4.5 g/d)氮利用率最高。说明添加4.5 g/d过瘤胃蛋氨酸效果最佳。
20 Tan ship, which had a good condition and a similar age weight, were randomly dividedinto five groups, each of which was raised in a single cage. The five groups of Tan ship had the ratioof concentrate to roughage 3 to 7, and the coarse material was the cellulose enzymatic buckwheathay straw 40: corn silage 60. Test Ⅰ, Ⅱ, Ⅲ,Ⅳ, Ⅴ group feeded basic diet and added rumenbypass methionine respectively 0 g/d, 1.5 g/d,3 g/d and 4.5 g/d, 6 g/d. The results showed that the dry matter digestion rate was highest added 4.5 g/d rumen bypass methionine group and had signif-icantly influences on the nitrogen utilization efficiency(P<0.01). The test Ⅳ group(4.5 g/d) was thehighest utilization rate of nitrogen. In terms of digestive metabolism, the effect of adding 4.5 g/d rumenbypass methionine was the best.
20 Tan ship, which had a good condition and a similar age weight, were randomly dividedinto five groups, each of which was raised in a single cage. The five groups of Tan ship had the ratioof concentrate to roughage 3 to 7, and the coarse material was the cellulose enzymatic buckwheathay straw 40: corn silage 60. Test Ⅰ, Ⅱ, Ⅲ,Ⅳ, Ⅴ group feeded basic diet and added rumenbypass methionine respectively 0 g/d, 1.5 g/d,3 g/d and 4.5 g/d, 6 g/d. The results showed that the dry matter digestion rate was highest added 4.5 g/d rumen bypass methionine group and had signif-icantly influences on the nitrogen utilization efficiency(P<0.01). The test Ⅳ group(4.5 g/d) was thehighest utilization rate of nitrogen. In terms of digestive metabolism, the effect of adding 4.5 g/d rumenbypass methionine was the best.
引文
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[2]Wang C,Liu H Y,Wang Y.Metal Effects of dietary supplementation of methionine and lysine on milk production and nitrogen utilization in dairy cows[J].Journal of Dairy Scienc,2010,93(8):3661-3670.
[3]Samuelson D J,Denise S K,Roffler Retal.Response of Holstein and brown swiss cows fed alfalfa haybased diets to supplemental methionine at two stages of lactation[J].Journal of Dairy Science,2001,84(4):917-928.
[4]贾文彬.日粮中添加过瘤胃蛋氨酸、烟酸对奶牛生产性能和血液生化指标的影响[D].保定:河北农业大学,2006.
[5]王慧媛,张英杰,刘月琴,等.日粮添加过瘤胃蛋氨酸对肉生产性能及营养物质消化率的影响[J].饲料工业,2014,53(3):51-54.
[6]王萌,周玉香,张艳梅,等.过瘤胃蛋氨酸对舍饲滩羊生产性能的影响[J].家畜生态学报,2017,38(1):36-39.
[7]燕磊.瘤胃保护性蛋氨酸对小尾寒羊氨基酸代谢影响的研究[D].山东:山东大学,2005.
[8]冯志良(译).蛋氨酸对犊牛能量代谢和生产性能的影响[J].饲料广角,1991(1):4-6.
[9]密士恒,王晓凤,马慧.瘤胃保护性蛋氨酸对肉羊氮代谢及生长性能的影响[J].中国畜牧杂志,2010,46(7):43-45.
[10]谢实勇,贾志海,朱晓萍,等.包被蛋氨酸对内蒙古白绒山羊氮代谢及产绒性能的影响[J].中国农业大学学报,2003,8(3):73-76.