Effects of Herbal Tea Residue on Growth Performance, Meat Quality, Muscle Metabolome, and Rumen Microbiota Characteristics in Finishing Steers.
Effects of Herbal Tea Residue on Growth Performance, Meat Quality, Muscle Metabolome, and Rumen Microbiota Characteristics in Finishing Steers.
复制标题
花草茶渣对育肥牛生长性能、肉品质、肌肉代谢组和瘤胃微生物群特征的影响
DOI：
10.3389/fmicb.2021.821293
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发表时间：
2021
影响因子：
5.2
通讯作者：
Sun J
中科院分区：
文献类型：
--
作者：
Li L;Sun X;Luo J;Chen T;Xi Q;Zhang Y;Sun J
凉茶渣含有多种药用和营养成分，是一种潜在的优质非常规粗饲料来源。试验选用30头健康西门塔尔杂交肥育公牛，随机分为两组：对照组（饲喂基础日粮）和试验组（用高铁日粮部分替代象草）。HTR并没有改变肉牛的生长性能，但增加净肉率，嫩度，持水力和增加水分含量和油酸和亚油酸浓度背最长肌。通过提高丙酸浓度和丙酸与乙酸的比例，改变肌肉代谢途径，改善瘤胃发酵。研究了肉牛瘤胃微生物群落组成及其与所测参数的相关性。某些瘤胃微生物与肌肉糖脂代谢产物和瘤胃NH3-N和挥发性脂肪酸水平密切相关。结果表明，HTR作为功能性粗饲料来源，通过改变瘤胃微生物组成，影响瘤胃脂肪酸组成和肌肉糖脂代谢，在一定程度上改善了肉牛的肉质。
Herbal tea residue (HTR) contains various medicinal and nutritional components and is a potential high-quality unconventional source of roughage. In this study, a total of 30 healthy Simmental crossbred finishing steers were equally divided into two groups: CN (fed with a basic diet) and RE (HTR partly replaced Pennisetum purpureum). HTR did not alter the growth performance of steers but increased the net meat rate, tenderness, and water-holding capacity and increased the moisture content and oleic acid and linoleic acid concentrations in longissimus dorsi. It altered muscle metabolic pathways and improved rumen fermentation by increasing the propionic acid concentration and propionic acid-to-acetic acid ratio. We studied the steers’ rumen microbial community composition and determined their correlation with the tested parameters. Certain rumen microorganisms were closely associated with muscle glucolipid metabolites and rumen NH3-N and volatile fatty acid levels. Our findings suggest that, as a functional roughage source, HTR improved to a certain extent the meat quality of steers by altering the rumen microbial composition and affecting the rumen fatty acid composition and muscle glucolipid metabolism.
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