EFFECT OF FEEDING ON VITAMIN-A CONCENTRATIONS IN BLOOD-PLASMA OF DOGS

被引：14

作者：

SCHWEIGERT, FJ ^{[1
]}

UEHLEINHARRELL, S ^{[1
]}

ZUCKER, H ^{[1
]}

机构：

[1] UNIV MUNICH, FAC VET, INST PHYSIOL PHYSIOL CHEM & NUTR PHYSIOL, W-8000 MUNICH 22, GERMANY

来源：

JOURNAL OF VETERINARY MEDICINE SERIES A-PHYSIOLOGY PATHOLOGY CLINICAL MEDICINE | 1990年 / 37卷 / 08期

关键词：

D O I：

10.1111/j.1439-0442.1990.tb00951.x

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

The effects of different concentrations of vitamin A in food as well as different food compositions on serum vitamin A levels in dogs were investigated. Contrary to current knowledge for all other species, vitamin A levels in dogs were clearly affected by the daily vitamin A supply as well as the type of food. This behavior, similar to that of vitamin E, can be explained by the fact that dogs and other carnivores transport most of their vitamin A in blood as retinyl esters (mainly retinyl stearate) bound to lipoproteins. The differences in the retinyl ester pattern between vitamin A in liver and in blood indicates that the mobilization of vitamin A from the liver involves selective mechanism. The possible importance of nonspecific, lipoprotein‐bound vitamin A esters in the blood of dogs is discussed. © 1990 Blackwell Verlag GmbH

引用

页码：605 / 609

页数：5

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