Dynamic changes in rumen fermentation and bacterial community following rumen fluid transplantation in a sheep model of rumen acidosis: implications for rumen health in ruminants.

08:00 EDT 11th April 2019 | BioPortfolio

Summary of "Dynamic changes in rumen fermentation and bacterial community following rumen fluid transplantation in a sheep model of rumen acidosis: implications for rumen health in ruminants."

Over the years, rumen fluid transplantation (RT) has been successfully applied to treat acute rumen acidosis in ruminants, but how it functions in the ruminal microbial homeostasis and host function remains largely unknown. Here, we investigated the dynamic changes of rumen fermentation and bacterial communities following RT and its beneficial effects on rumen epithelial morphology and function in a sheep model of rumen acidosis. The results showed that RT resulted in dynamic changes in rumen fermentation and increased the concentrations of total volatile fatty acid, acetate, propionate, and butyrate, but it decreased the levels of lactate and LPS in the rumen. Illumina MiSeq Sequencing data showed that RT facilitated rapid rebuilt of ruminal bacterial homeostasis (8 d in control vs. 2 d in RT) from a markedly dysbiotic acidosis state to a healthy level (similar with those of donors). At the genus level, RT increased the relative abundance of unclassified Bacteroidales, unclassified Prevotellaceae, unclassified Ruminococcaceae, and Acetitomaculum. Additionally, RT also accelerated recovery of the predicted metagenomic function of ruminal bacteria. Rumen papillae morphology results showed that RT alleviated the damage of rumen epithelia induced by acute rumen acidosis and increased the length of rumen papillae. Furthermore, real-time PCR results showed that RT modulated mRNA expression of genes related to cytokines and tight junctions in the rumen epithelia. In summary, these results reveal that RT accelerates recovery of rumen fermentation and bacterial homeostasis and modulates rumen epithelial morphology and function for sheep suffering from rumen acidosis.-Liu, J., Li, H., Zhu, W., Mao, S. Dynamic changes in rumen fermentation and bacterial community following rumen fluid transplantation in a sheep model of rumen acidosis: implications for rumen health in ruminants.


Journal Details

This article was published in the following journal.

Name: FASEB journal : official publication of the Federation of American Societies for Experimental Biology
ISSN: 1530-6860
Pages: fj201802456R


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Medical and Biotech [MESH] Definitions

The first stomach of ruminants. It lies on the left side of the body, occupying the whole of the left side of the abdomen and even stretching across the median plane of the body to the right side. It is capacious, divided into an upper and a lower sac, each of which has a blind sac at its posterior extremity. The rumen is lined by mucous membrane containing no digestive glands, but mucus-secreting glands are present in large numbers. Coarse, partially chewed food is stored and churned in the rumen until the animal finds circumstances convenient for rumination. When this occurs, little balls of food are regurgitated through the esophagus into the mouth, and are subjected to a second more thorough mastication, swallowed, and passed on into other parts of the compound stomach. (From Black's Veterinary Dictionary, 17th ed)

A component of the DIGESTIVE SYSTEM of RUMINANTS which consists of the ABOMASUM; OMASUM; RETICULUM; and RUMEN.

A genus of gram-negative bacteria in the family ACIDAMINOCOCCACEAE, found in the RUMEN of SHEEP and CATTLE, and also in humans.

A genus of gram-positive bacteria in the family Lachnospiraceae that inhabits the RUMEN; LARGE INTESTINE; and CECUM of MAMMALS.

A saccharolytic species of gram-negative bacteria in the family Prevotellaceae. It ferments a wide range of CARBOHYDRATES in the RUMEN of animals.

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