文献类型： 外文期刊

作者： Li, Chuang ¹ ; Chen, Ning ² ; Zhang, Xingxing ² ; Shahzad, Khuram ⁴ ; Qi, Ruxin ¹ ; Zhang, Zhenbin ¹ ; Lu, Zhiqi ¹ ; Lu, Yue ¹ ; Yu, Xiang ¹ ; Zafar, Muhammad Hammad ¹ ; Wang, Mengzhi ¹ ; Liu, Wujun ⁵ ;

作者机构： 1.Yangzhou Univ, Coll Anim Sci & Technol, Yangzhou, Peoples R China

2.Xinjiang Acad Agr & Reclamat Sci, State Key Lab Sheep Genet Improvement & Hlth Prod, Shihezi, Peoples R China

3.Xinjiang Acad Agr & Reclamat Sci, Inst Anim Husb & Vet, Shihezi, Peoples R China

4.COMSATS Univ Islamabad, Dept Biosci, Islamabad, Pakistan

5.Xinjiang Agr Univ, Coll Anim Sci, Urumqi, Peoples R China

关键词： mixed silage; Hu sheep; antioxidant properties; high-throughput sequencing; bacterial community

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：6.064； 五年影响因子：6.843 ）

ISSN：

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Silage is rich in nutrients, which can make up for the lack of seasonal roughage, and has a certain promotion effect on the intensive feeding of ruminants. In addition, silage can maintain the rumen function of ruminants to a certain extent and reduce the risk of rumen acidosis and abomasum translocation. The purpose of this study was to investigate the effects of the mixed silage of Chinese cabbage waste and rice straw (mixed silage) on antioxidant performance, rumen microbial population, and fermentation metabolism of Hu sheep. The 16 healthy Hu sheep (eight rams and eight ewes, 39.11 +/- 1.16 kg, 5.5 months) were randomly divided into two groups (the control group and the mixed silage group) with eight animals (four rams and four ewes) in each group. The control group was fed with farm roughage (peanut seedlings, corn husk, and high grain shell) as forage, and the mixed silage group was fed with the mixed silage as forage. The results showed that the mixed silage had no effect on the growth performance of Hu sheep (p > 0.05). Ruminal butyric acid, total volatile fatty acids (TVFA), and ammonia nitrogen (NH3-N) concentration in the mixed silage group were increased, whereas the pH was decreased (p < 0.05). The blood and rumen total antioxidants capacity (T-AOC) concentration in the mixed silage group was higher, and the malondialdehyde (MDA) content in rumen, serum, liver, and kidney was lower than that in the control group (p < 0.05). PCoA and ANOSIM results of Illumina sequencing indicated that the mixed silage affected the bacterial composition of the rumen microbes. The mixed silage increased the proportion of Prevotellaceae UCG-004 which was in a positive correlation with Vitamin C (Vc). In addition, PICRUSt functional prediction analysis showed that ascorbate and aldarate metabolism were up-regulated in the mixed silage group (p < 0.05). In conclusion, higher contents of V-C and acid detergent fiber (ADF) in the mixed silage were beneficial to the growth and reproduction of Prevotellaceae UCG-004, resulting in increased production of the butyric acid significantly upregulated the metabolism of ascorbate and aldarate metabolism, thereby improving the antioxidant properties of Hu sheep.