Factors affecting the transport of volatile fatty acids across rumen epithelium.

Selection of internal reference genes for normalization of reverse transcription quantitative polymerase chain reaction (RT-qPCR) analysis in the rumen epithelium

The rumen is lined on the luminal side by a stratified squamous epithelium that is responsible for not only absorption, but also transport, extensive short-chain fatty acid (SCFA) metabolism and protection. Butyrate has been demonstrated to initiate the differentiation of the tissue following introduction of solid feed to the weaning neonate as well as affecting the metabolism of other nutrient...

Ketone-body production from various substrates by sheep-rumen epithelium.

The rumen of the sheep is lined with a stratifiedsquamous epithelium, through which are absorbed short-chain fatty acids, ammonia and probably other products of the microbial degradation of foodstuffs in the rumen. The finding that this tissue can metabolize most of the short-chain fatty acids occurring in the rumen (Pennington, 1952; Annison & Pennington, 1954) and possesses a capacity for ket...

The metabolism of short-chain fatty acids in the sheep. II. Further studies with rumen epithelium.

Ruminant Nutrition Symposium: Role of fermentation acid absorption in the regulation of ruminal pH.

Highly fermentable diets are rapidly converted to organic acids [i.e., short-chain fatty acids (SCFA) and lactic acid] within the rumen. The resulting release of protons can constitute a challenge to the ruminal ecosystem and animal health. Health disturbances, resulting from acidogenic diets, are classified as subacute and acute acidosis based on the degree of ruminal pH depression. Although i...

Malic Acid & Metabolic Acidosis

Label-MMAcid-Rev030410 BACKGROUND Ruminants are animals that have multiple stomachs to allow consumption and digestion of fibrous feedstuffs. Key to this digestive process is the bacterial breakdown of the fiber in the first stomach or rumen. The bacterial balance in the rumen can shift, allowing the ruminant to adapt to different diets. Ruminal bacteria convert fiber into lactate and volatile ...