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Intestinal transport of the amino acids L-valine, L-leucine and L-isoleucine in rainbow trout (Oncorhynchus mykiss)


, : Intestinal transport of the amino acids L-valine, L-leucine and L-isoleucine in rainbow trout (Oncorhynchus mykiss). Der intestinale Transport der Aminosauren L Valin, L Leucin und L Isoleucin bei der Regenbogenforelle Oncorhynchus mykiss: 62 pp.

Intestinal absorption of L-valine, L-leucine and L-isoleucine was studied in isolated mid- and hindgut sections from 220, 2- to 3-year old rainbow trout, weighing 123-450 g. The trout were restricted or freely fed for 6 weeks using intact crude protein or crystalline amino acids. There was an active transepithelial transport of L-valine in the midgut, but not in the hindgut. Leucine transport was highest in ad libitum fed trout and decreased when feed was restricted.

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