Impact of feeding regimens on the composition of gut microbiota and metabolite profiles of plasma and feces from Mongoli
- PDF / 775,676 Bytes
- 11 Pages / 612 x 792 pts (letter) Page_size
- 50 Downloads / 157 Views
eISSN 1976-3794 pISSN 1225-8873
Impact of feeding regimens on the composition of gut microbiota and metabolite profiles of plasma and feces from Mongolian sheep Bohui Wang1,2, Yulong Luo1, Rina Su1, Duo Yao1, Yanru Hou1, Chang Liu1, Rui Du1, and Ye Jin1* 1 College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, 010018, P. R. China 2 Ordos City Food Inspection and Testing Center, Ordos, 017000, P. R. China
(Received Oct 25, 2019 / Revised Feb 17, 2020 / Accepted Feb 25, 2020)
Mongolian sheep are an indigenous ruminant raised for wool and meat production in China. The gut microbial community plays an important role in animal performance and metabolism. The objective of this study was to investigate the effects of two feeding regimens on the diversity and composition of gut microbiota and metabolite profiles of feces and plasma from Mongolian sheep. A total of 20 Mongolian sheep were assigned to one of two feeding regimens: free grazing (FG) and barn confinement (BC). When samples were collected, the average live weights of the sheep were 31.28 ± 1.56 kg and 34.18 ± 1.87 kg for the FG and BC groups, respectively. At the genus level, the FG group showed higher levels of Bacteroides, RC9_gut_group, Alistipes, Phocaeicola, Barnesiella, and Oscillibacter, and lower levels of Succinivibrio, Treponema, and Prevotella, compared to the BC group. The butyric acid content in feces was lower in the FG group (P < 0.05). Higher levels of palmitic acid, oleic acid, alpha-linolenic acid, L-carnitine, L-citrulline, and L-histidine, and lower levels of L-tyrosine, L-phenylalanine, and L-kynurenine were found in the plasma of the FG sheep. Moreover, there were substantial associations between several gut microbiota genera and alterations in feces and plasma metabolites especially those involved in the metabolism of butyric acid, linolenic acid, and L-tyrosine. Feeding regimens can not only influence the composition of gut microbiota, but also alter metabolic homeostasis in sheep. Keywords: feeding regimens, gut microbiota, metabolite, mongolian sheep Introduction In many countries, including China, grassland protection and conservation is becoming ever more important. The *For correspondence. E-mail: [email protected]; Tel./Fax: +86-0471430 9230 Copyright G2020, The Microbiological Society of Korea
implementation of new government policies has placed pressure on the traditional practice of farming grazing domesticated animals. Consequently, grazing is gradually being phased out and replaced with concentrated animal feeding operations similar to feedlot rearing. It has been demonstrated that, at least for sheep, feeding regimens can affect their overall health (Celi et al., 2017), growth characteristics (Resconi et al., 2009), and even meat quality (Joy et al., 2008; Wang et al., 2018a). Moreover, several studies have indicated that the diversity and composition of gut microbes in animals, including cattle, pigs, and geese, appear to be related to their nutrition, which depends largely on their feedi
Data Loading...
