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Tocopherol absorption and metabolism in the chick and turkey
Year:
1982
Source of publication :
Journal of Nutrition
Authors :
Bartov, Ido
;
.
Hurvitz, Shmuel
;
.
Volume :
112
Co-Authors:
Sklan, D., Fac. Agric., Hebrew Univ., Rehovot 76100, Israel
Bartov, I., Fac. Agric., Hebrew Univ., Rehovot 76100, Israel
Hurwitz, S., Fac. Agric., Hebrew Univ., Rehovot 76100, Israel
Facilitators :
From page:
1394
To page:
1400
(
Total pages:
7
)
Abstract:
Chickens and turkeys were fed from hatching basal diets to which tocopherol was added at levels of 10, 50 and 250 mg/kg for 28 days. During the last 4 days [3H]tocopherol and 141Ce were included in the diets. Plasma and liver tocopherol levels were correlated with dietary tocopherol in both chickens and turkeys, but concentrations were 1.5-4.5-fold lower in turkeys. Disappearance (absorption + catabolism) of tocopherol between feed and lower ileum was 78-80% of the ingested vitamin, and no significant differences were found with dietary intake or between chickens, and turkeys. Of the 3H-labeled material found in the duodenum, 24-40% was not extractable by organic solvents and comprised mainly tocopheryl glucuronides. The duodenal secreation of glucuronides increased with dietary tocopherol intake, and less than 30% of the secreted glucuronides were reabsorbed by the small intestine. The duodenal organic solvent-extractable 3H contained 30-40% material that appeared to be tocopheryl quinone. This proportion increased with distance from the pylorus. Turkeys excreted 2.5- to 7-fold more glucuronides than chickens. This explains in part the lower plasma and tissue concentrations of tocopherol observed in turkeys.
Note:
Related Files :
Animal
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cerium 141
Chickens
drug absorption
Duodenum
Male
oral drug administration
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Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19773
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:31
Scientific Publication
Tocopherol absorption and metabolism in the chick and turkey
112
Sklan, D., Fac. Agric., Hebrew Univ., Rehovot 76100, Israel
Bartov, I., Fac. Agric., Hebrew Univ., Rehovot 76100, Israel
Hurwitz, S., Fac. Agric., Hebrew Univ., Rehovot 76100, Israel
Tocopherol absorption and metabolism in the chick and turkey
Chickens and turkeys were fed from hatching basal diets to which tocopherol was added at levels of 10, 50 and 250 mg/kg for 28 days. During the last 4 days [3H]tocopherol and 141Ce were included in the diets. Plasma and liver tocopherol levels were correlated with dietary tocopherol in both chickens and turkeys, but concentrations were 1.5-4.5-fold lower in turkeys. Disappearance (absorption + catabolism) of tocopherol between feed and lower ileum was 78-80% of the ingested vitamin, and no significant differences were found with dietary intake or between chickens, and turkeys. Of the 3H-labeled material found in the duodenum, 24-40% was not extractable by organic solvents and comprised mainly tocopheryl glucuronides. The duodenal secreation of glucuronides increased with dietary tocopherol intake, and less than 30% of the secreted glucuronides were reabsorbed by the small intestine. The duodenal organic solvent-extractable 3H contained 30-40% material that appeared to be tocopheryl quinone. This proportion increased with distance from the pylorus. Turkeys excreted 2.5- to 7-fold more glucuronides than chickens. This explains in part the lower plasma and tissue concentrations of tocopherol observed in turkeys.
Scientific Publication
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