Net portal appearance of proteinogenic amino acids in Iberian pigs fed betaine and conjugated linoleic acid supplemented diets

Betaine and conjugated linoleic acid (CLA) may improve pig performance and increase lean mass, but the mechanisms are not well understood. Gastrointestinal tract, pancreas, spleen and mesenteric fat comprise portal-drained viscera (PDV). Nutrient and energy availability of productive tissues may be compromised by PDV because of its anatomical situation and elevated oxygen consumption. The objective of this study was to determine if the use of...