日粮添加酵母培养物对山羊瘤胃发酵参数和十二指肠氨基酸流量的影响

doi:10.7668/hbnxb.2009.06.022

摘要/Abstract

摘要： 为考察日粮添加益康XP和酵母培养物(YC)对山羊瘤胃发酵参数和十二指肠氨基酸(AA)流量的影响,采用3×3拉丁方试验设计,选用3头装有永久性瘤胃瘘管和十二指肠瘘管的健康湘东黑山羊(平均体重为(15±2.5) kg)为试验动物,饲喂同一种基础日粮以及分别添加0.25%益康XP和YC的试验日粮.结果表明,日粮添加益康XP有降低瘤胃pH值和NH_3-N浓度的趋势;而添加YC有增加瘤胃pH值和NH_3-N浓度的趋势;添加益康XP和YC日粮,瘤胃TVFA含量分别下降20.61%和3.98%(P＞0.05),而对瘤胃内TVFA、各单个VFA含量及其所占比例、乙酸/丙酸均无显著影响(P＞0.05).添加益康XP和YC对山羊十二指肠AA流量无显著影响(P＞0.05),采食添加YC饲粮的山羊十二指肠AA流量高于采食添加益康XP饲粮的山羊.结果显示,YC对于调节山羊瘤胃发酵、增加过瘤胃蛋白含量有一定的积极作用.

关键词: 酵母培养物, 瘤胃发酵, 氨基酸, 流量, 山羊

Abstract: This experiment was conducted to study the effect of dietary supplementation of Y ikang XP and yeast culture(YC)on rumen fermentation parameters and duodenal flow of amino acid(AA)in growing goats.Three goats((15 ± 215)kg)were fitted with ruminal and duodenal cannulae and allocated to three dietary treatments in a 3 × 3 Latin square design.The goats were fed a same basic ration and supplemented with Y ikang XP and YC both at 0.25 % level.The results showed that there was an increasing tendencyof ruminal pH value and NH32N concentration when supplemented with YC,and a decreasing tendency of ruminal pH value and NH32N concentration was observed when supplemented with Y ikang XP.The content of total volatile fatty acid(TVFA) decreased by 20.61 % and 3.98 %(P > 0.05)when supplemented with Y ikang XP and YC,respectively.There were no significantly(P > 0.05)differences of the content of TVFA,individual VFA content and its ratio,and the ratio of acetic acid to propionate acid when supplemented with Y ikang XP and YC.The dietary supplementation of Y ikang XP and YC did not affect(P > 0.05)the duodenal flowof AA,the duodenal flow of AA for the YC treatment was higher than that for the Y ikang XP treatment.In conclusion,the dietary supplementation of YC had positive effects on regulation of rumen fermentation and promotion of rumen microbial protein synthesis.

Key words: Yeast culture, Rumen fermentation, Amino acid, Flow, Goats

中图分类号:

S816.
S82

周传社, 黎智峰, 谭支良, 高腾云. 日粮添加酵母培养物对山羊瘤胃发酵参数和十二指肠氨基酸流量的影响[J]. 华北农学报, 2009, 24(6): 109-115. doi: 10.7668/hbnxb.2009.06.022.

ZHOU Chuan-she, LI Zhi-feng, TAN Zhi-liang, GAO Teng-yun. The Effect of Dietary Supplementation of Yeast Culture on Rumen Fermentation Parameters and Duodenal Flow of Amino Acid in Growing Goats[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(6): 109-115. doi: 10.7668/hbnxb.2009.06.022.

http://www.hbnxb.net/CN/Y2009/V24/I6/109

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