Tan C Y, Zhong R Z, Tan Z L, Han X F, Tang S X, Xiao W J, Sun Z H, Wang M
Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha, 410125, Hunan, People's Republic of China.
Lipids. 2011 Mar;46(3):239-47. doi: 10.1007/s11745-010-3477-1. Epub 2010 Oct 13.
This study was conducted to examine dietary tea catechins (TC) supplementation on the fatty acid composition of muscle and ruminal bacteria in goats fed a maize stover-based diet. Forty goats, 8 months old (16.2 ± 1.2 kg), were randomly divided into four equal groups (10 animals in each group) and assigned to four experiment diets with TC supplementation at four levels (0, 2,000, 3,000 and 4,000 mg TC/kg feed, namely TC0, TC2000, TC3000 and TC4000, respectively). After a 60-day feeding period, all the goats were slaughtered and sampled. The results showed that dietary TC inclusion increased the average daily gain (ADG), protein content in the semimembranosus muscle and dry matter in the longissimus dorsi muscle (LD). Dietary TC supplementation increased the ratio of n-6 to n-3 fatty acid, the ratio of polyunsaturated fatty acids to saturated fatty acids was higher in TC3000 and TC4000 than in TC0 and TC2000 for LD. The current results implied that dietary inclusion of a suitable TC dose could improve the growth performance and increase the proportions of unsaturated fatty acids in muscle, and the biohydrogenation of ruminal microorganisms might change the profiles of fatty acids in the muscle of growing goats.
本研究旨在探讨在以玉米秸秆为基础日粮的山羊中添加膳食茶儿茶素（TC）对肌肉脂肪酸组成和瘤胃细菌的影响。40只8月龄（16.2±1.2千克）的山羊被随机分为四组（每组10只），并分别饲喂添加四个水平TC（0、2000、3000和4000毫克TC/千克饲料，分别为TC0、TC2000、TC3000和TC4000）的四种试验日粮。经过60天的饲喂期后，所有山羊被屠宰并取样。结果表明，日粮中添加TC提高了平均日增重（ADG）、半膜肌中的蛋白质含量和背最长肌（LD）中的干物质含量。日粮中添加TC提高了n-6与n-3脂肪酸的比例，对于LD，TC3000和TC4000组的多不饱和脂肪酸与饱和脂肪酸的比例高于TC0和TC2000组。目前的结果表明，日粮中添加合适剂量的TC可以改善生长性能并增加肌肉中不饱和脂肪酸的比例，瘤胃微生物的生物氢化作用可能会改变生长山羊肌肉中的脂肪酸谱。
