高蛋白小麦或低蛋白小麦的干轧或回火对饲养场牛瘤胃参数、生长性能和肝脓肿的影响

IF 1.2 4区 农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Amanda C Meadows, S. Terry, G. Penner, P. Hucl, T. McAllister, G. Ribeiro
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引用次数: 0

摘要

摘要本研究评估了干小麦(DR)与调质小麦(TR)以及低小麦(13%,LP)与高蛋白小麦(18%,HP)对饲养场牛瘤胃发酵、生长和肝脓肿的影响。杂交安格斯牛(302±34kg;n=160;24头瘤胃插管)用于后接(BG)至终点(FN)试验。BG日粮由60%大麦青贮、35%小麦和5%补充剂组成,FN日粮包含10%大麦青贮、85%小麦和5%添加剂(干物质基础)。采用四种过渡(TN)日粮使牛适应FN日粮。当HP和LP小麦都是TR时,大颗粒的数量增加和小颗粒的数量减少,HP小麦的这种反应更大。在TN期间,与HP-TR小麦相比,使用HP-DR和LP-TR的牛瘤胃pH较低(P≤0.03)。饲喂HP小麦BG日粮的牛往往比饲喂LP小麦的牛表现出更大(P≤0.09)的增重:饲料和NEg。饲喂LP小麦的FN牛表现出更大(P=0.01)的平均日增重。HP小麦组肝脓肿较重(P<0.001)。虽然HP小麦改善了BG牛的生长,但它增加了FN期间肝脓肿的严重程度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of dry or temper rolling of high- or low-protein wheat and its impact on rumen parameters, growth performance, and liver abscesses in feedlot cattle
Abstract This study assessed the impact of dry- (DR) versus temper-rolled (TR) and low- (13%, LP) versus high-protein (18%, HP) wheat on ruminal fermentation, growth, and liver abscesses in feedlot cattle. Crossbred Angus steers (302 ± 34 kg; n = 160; 24 ruminally cannulated) were used in a backgrounding (BG) to finishing (FN) trial. The BG diet consisted of 60% barley silage, 35% wheat, and 5% supplement, and the FN diet contained 10% barley silage, 85% wheat, and 5% supplement (dry matter basis). Four transition (TN) diets were used to adapt cattle to the FN diet. A numerical increase in large particles and reduction in small particles occurred when both HP and LP wheat were TR, with this response being greater for HP wheat. Steers experienced lower (P ≤ 0.03) ruminal pH with HP-DR and LP-TR than HP-TR wheat during TN. Steers fed HP wheat BG diets tended to exhibit greater (P ≤ 0.09) gain:feed and NEg than steers fed LP wheat. Greater (P = 0.01) average daily gains were exhibited by FN steers fed LP wheat. Liver abscesses were more (P < 0.001) severe with HP wheat. While HP wheat improved the growth of BG cattle, it increased the severity of liver abscesses during FN.
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来源期刊
Canadian Journal of Animal Science
Canadian Journal of Animal Science 农林科学-奶制品与动物科学
CiteScore
2.30
自引率
0.00%
发文量
51
审稿时长
6 months
期刊介绍: Published since 1957, this quarterly journal contains new research on all aspects of animal agriculture and animal products, including breeding and genetics; cellular and molecular biology; growth and development; meat science; modelling animal systems; physiology and endocrinology; ruminant nutrition; non-ruminant nutrition; and welfare, behaviour, and management. It also publishes reviews, letters to the editor, abstracts of technical papers presented at the annual meeting of the Canadian Society of Animal Science, and occasionally conference proceedings.
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