Abstract
A note on absorption of crystalline threonine in pigs
Highlights
The objective of the present study was to determine whether crystalline threonine is absorbed completely in the small intestine after feeding pigs with a threonine-supplemented diet
Twelve castrated male pigs, surgically fitted with post-valvular T-caecum cannulae according to van Leeuwen et al (1991) were divided into two groups and fed with the respective diets for 12 days
The pigs were kept in metabolic cages and given two equal portions of the diets at 08:00 and 20:00 h
Summary
Increasing quantities of crystalline amino acids are being used to supplement diets for pigs. Yen et al (1991) found that pigs absorb free lysine and threonine more rapidly than protein-bound lysine and threonine. Our previous study of amino acid absorption in the small intestine (Buraczewska, 1981) demonstrated that the rate of absorption of free threonine, to histidine, was lower as compared with other free essential amino acids, and depended on the concentration of amino acids in the intestine. The objective of the present study was to determine whether crystalline threonine is absorbed completely in the small intestine after feeding pigs with a threonine-supplemented diet. ABSORPTION OF CRYSTALLINE THREONINE I N PIGS
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