RT info:eu-repo/semantics/article
T1 Betaine increases net portal absorption of volatile fatty acids in Iberian pigs
A1 Lachica, M.
A1 Saro Higuera, Cristina
A1 Mateos Álvarez, Iván
A1 Gómez García, Manuel
A1 Ranilla García, María José
A1 Fernández Fígares, Ignacio
A2 Producción Animal
K1 Sanidad animal
K1 Bacterial population
K1 Fermentation
K1 Net portal flux
K1 Short chain fatty acids
K1 Sus scrofa mediterraneus
K1 3109 Ciencias Veterinarias
AB [EN] Betaine is an osmolyte with the potential to increase volatile fatty acids (VFAs) production and hence improve intestinal health.The present study investigated how betaine affects portal and arterial concentrations and net portal absorption (NPA) of VFA in growing Iberian pigs. Eight 30 kg BW Iberian growing barrows with indwelling catheters in portal vein, ileal vein and carotid artery were randomly assigned to a control diet or a diet supplemented with 0.5% betaine. Para-aminohippuric acid was infused into the ileal vein as a marker to determine portal blood flow using the dilution method. Blood samples were simultaneously taken from the carotid artery and portal vein at −60, 60, 120, 180, 240, 300 and 360 min after feeding 1 200 g of the diet. The NPA of VFA (acetate, propionate, butyrate, valerate, isobutyrate and caproate) was determined by multiplying the porto-arterial plasma concentration differences by portal plasma flow. Betaine increased NPA of acetate (1.44 fold; P < 0.001) and total VFA (0.55 fold; P < 0.001) while decreased NPA of propionate (−0.38 fold; P < 0.05) and valerate (−1.46 fold; P < 0.05) compared with control pigs. Estimated heat production potentially derived from NPA of VFA accounted for 0.20–0.27 of metabolizable energy for maintenance. Acetate and propionate accounted for most of the total VFA estimated heat production (0.83–0.89). Regarding bacterial communities, betaine apparently did not change the DNA abundance of fecal total bacteria, Lactobacillus, Bifidobacterium, Enterobacteriaceae, Bacteroides and the Clostridium clusters I, IV and XIV. In conclusion, betaine increased portal appearance and NPA of VFA, contributing to cover maintenance energy requirements
PB Elsevier
SN 1751-7311
LK https://hdl.handle.net/10612/18842
UL https://hdl.handle.net/10612/18842
NO Lachica, Saro, Mateos, Gómez-García, Ranilla, & Fernández-Fígares. (2021). Betaine increases net portal absorption of volatile fatty acids in Iberian pigs. Animal, 15(5). https://doi.org/10.1016/J.ANIMAL.2021.100197
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 19-may-2024