Stall-Feeding of Sheep on Restricted Grazing: Effects on Performance and Serum Metabolites, Ruminal Fermentation, and Fecal Microbiota

被引:3
|
作者
Zhao, Mengyu [1 ,2 ,3 ]
Zhang, Xiaoan [1 ,2 ,3 ]
Chen, Yao [1 ]
Ren, Chunhuan [1 ,3 ]
Sun, Yiming [1 ]
Wang, Penghui [1 ]
Cheng, Xiao [1 ,3 ]
Zhang, Zijun [1 ,3 ]
Chen, Jiahong [1 ,2 ]
Huang, Yafeng [1 ,2 ,3 ]
机构
[1] Anhui Agr Univ, Coll Anim Sci & Technol, Hefei 230036, Peoples R China
[2] Ctr Agr Technol Cooperat & Promot Dingyuan Cty, Chuzhou 233200, Peoples R China
[3] Yingshang Agr Green Dev Promot Ctr, Yingshang 236200, Peoples R China
来源
ANIMALS | 2023年 / 13卷 / 16期
关键词
restricted grazing time; lambs; growth performance; serum metabolites; ruminal fermentation; rectal microbial; FATTY-ACID-COMPOSITION; GROWTH-PERFORMANCE; BIOCHEMICAL INDEXES; BACTERIAL COMMUNITY; CARCASS TRAITS; MEAT QUALITY; SYSTEMS; SUPPLEMENTATION; FLAVOR; TIME;
D O I
10.3390/ani13162644
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
This study investigated the effects of three feeding systems, indoor feeding (CONT), indoor feeding with time-restricted grazing artificial pasture (4 h/day, G4H), and indoor feeding with an eight-hour daily grazing artificial pasture (G8H), on the growth performance, serum metabolites, ruminal fermentation, and fecal microbiota composition of lambs. Average daily gain showed a tendency (p = 0.081) to be higher for the G4H group compared with the CONT group. Moreover, feeding systems did not have a significant effect on most of the serum biochemical indicators in lambs. Concentrations of serum glutathione peroxidase and immunoglobulins (IgA, gG, and IgM) were significantly lower (p < 0.01) in the CONT group. Additionally, a tendency towards higher levels of volatile fatty acids, acetate, and butyrate was found in animals of the G4H group compared to the CONT group. Furthermore, fecal microbiota composition was altered in G4H and G8H groups, resulting in the increased relative abundance of Firmicutes and Ruminococcaceae UCG-005, as well as the decreased relative abundance of Ruminobacter compared with the CONT group. Overall, these results suggest that indoor feeding with restricted grazing time does not significantly affect fattening performance or rumen fermentation but enhances antioxidation and immune function activity and also alters fecal microbiota composition.
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页数:17
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