The transition from normal forage to a highly fermentable diet to achieve rapid weight gain in the cattle industry can induce ruminal acidosis. The molecular host mechanisms that occur in acidosis are largely unknown. Therefore, the histology and transcriptome profiling of rumen epithelium was investigated in normal and acidosis animals to understand the molecular mechanisms involved in the dis...

We used 16S rRNA gene sequencing to examine the posteffects of antibiotic treatment on the structure and metabolism of rumen microbiota. Twelve goats were randomly assigned into two groups, with one group receiving intramuscular streptomycin injection at 40 mg/kg bodyweight daily for 10 days. At 4 weeks after treatment with antibiotic, three goats were randomly selected from each group and swit...

Butyric acid is a major product of feed fermentation in the intestinal tract of various animals, especially the rumen of cattle and sheep. This has been known for 70 years (1). Elsden, Hitchcock, Marshall, and Phillipson (2) noted that the rumen and reticulum of an ox contained an average of 329 gm. of volatile acids (calculated as acetic acid), and that the mixture of volatile fatty acids in t...

A method for the fractionation of sheep rumen epithelium with limited mitochondrial breakage is described. The distributions of the enzymes of the 3-hydroxy-3-methylglutaryl-CoA pathway of ketogenesis indicate that this process is exclusively mitochondrial. Enzyme activities are sufficient to account for the ketogenic rates found in vivo. The failure of (-)-hydroxycitrate to block ketogenic flu...

Header: Rumen Epithelial Adaptation And Ruminal Acidosis 1 2 3 Bovine Rumen Epithelium Undergoes Rapid Structural Adaptations During Grain4 Induced Subacute Ruminal Acidosis 5 Michael A. Steele, Jim Croom, Melissa Kahler, Ousama ALZahal, Sarah E. Hook, Kees 6 Plaizier, Brian W. McBride 7 Department of Animal and Poultry Science, University of Guelph, Guelph, Canada 8 Department of Poultry Scien...

1. Institute of Veterinary Physiology, Free University of Berlin, Oertzenweg 19b , 14163 6 Berlin, Germany 7 2. Department of Physiology, Faculty of Veterinary Sciences, University of Khartoum, Sudan 8 3. University of Veterinary & Animal Sciences Lahore, Pakistan 9 10 Running head: Modulation of urea transport 11 12 Author for correspondence: 13 H. Martens 14 Department of Veterinary Physiolog...

STEVENS, C. E., AND B. K. SETTLER. Transport offatty acid mixturesacross rumen epithelium. Am. J. Physiol. 2 I I ( I) : R264-27 I. rg66.-Transport of acetate and propionate was affected by the presence of other fatty acids. Acetate appeared to be utilized by the tissue more rapidly when propionate was present and was produced by conversion from butyrate. Propionate transport was greater when ac...

The production of biodiesel from rapeseed oil methyl ester leaves glycerol (synonym: glycerine, 1,2,3-propanetriol) as a valuable by-product and a promising feed supplement for farm animals. This thesis provides information about the supplemental feeding with glycerol to dairy cows in early lactation and to young calves, and describes the fate of glycerol entering the rumen and the impact of gl...