Zhu Xin, Dou Xingtang, Su Tingting, Ye Lisha, Zhang Lu, Liu Haiying, Han Di
College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
Liaoning Cashmere Goat Breeding Farm Co., Ltd., Liaoyang 111000, China.
Microorganisms. 2025 Apr 17;13(4):933. doi: 10.3390/microorganisms13040933.
This study was conducted to compare the effects of hydrolysable versus condensed tannins on growth performance, nutrient digestion, and rumen fermentation in goats. A total of 27 Liaoning cashmere goats with similar initial body weights were randomly distributed into three groups: a basal diet, a basal diet +0.5% tannic acid (hydrolysable tannin, HT), or a basal diet +0.5% quebracho tannin (condensed tannin, CT), respectively. Compared to the control group, HT showed a decreased ( < 0.05) feed intake, while CT showed an increased ( < 0.05) feed intake and body weight gain. Digestibility of dry matter, crude protein, neutral detergent fiber, and acid detergent fiber did not differ ( > 0.05) among groups. The HT group showed lower pH and acetic acid concentration in the rumen ( < 0.05), while the CT group showed a decrease ( < 0.05) in the abundances of and . Supplementation of CT decreased ( < 0.05) the levels of dihydrouracil, xanthosine, alpha-D-mannose, and L-tryptophan, while HT increased ( < 0.05) these metabolites. In conclusion, this study suggested that responses of ruminal microbiota and metabolite profiles to the type of tannins varied, and CT displayed a more positive effect on the growth performance of goats than HT when supplemented at the same level in the diets.
本研究旨在比较可水解单宁与缩合单宁对山羊生长性能、养分消化及瘤胃发酵的影响。选取27只初始体重相近的辽宁绒山羊，随机分为三组：基础日粮组、基础日粮+0.5%单宁酸（可水解单宁，HT）组或基础日粮+0.5%白坚木单宁（缩合单宁，CT）组。与对照组相比，HT组采食量降低（<0.05），而CT组采食量和体重增加（<0.05）。各组间干物质、粗蛋白、中性洗涤纤维和酸性洗涤纤维的消化率无差异（>0.05）。HT组瘤胃pH值和乙酸浓度较低（<0.05），而CT组[此处原文缺失部分内容]的丰度降低（<0.05）。添加CT降低（<0.05）了二氢尿嘧啶、黄苷、α-D-甘露糖和L-色氨酸的水平，而HT增加（<0.05）了这些代谢产物的水平。总之，本研究表明瘤胃微生物群和代谢产物谱对单宁类型的反应不同，在日粮中以相同水平添加时，CT对山羊生长性能的影响比HT更积极。
