INFLUENCE OF DIETARY PROTEIN LEVEL ON THE AVAILABILITY OF SELENIUM(III) INFLUENCE OF DIETARY PROTEIN LEVEL ON THE INCIDENCE OF EXUDATIVE DIATHESIS IN CHICKENSFED WITH LOW SELENIUM DIET / 营养学报

ABSTRACT

Results obtained from previous studies shoved that at low level of dietary selenium(0.03 ppm) weanling rats fed with diets of low protein level usually possessed higher selenium concentration and GSHPx activity in their blood and tissues. The results were reproduced in chickens in this observation. Furthermore, even the original selenium level could not be maintained in blood and tissues of chickens fed with low protein diet (12.4%) because of faster growth rate and the lower selenium content (0.01 ppm) of the diet used in this study.Of the 27 chickens consuming 18.2% protein diet in the 14 days expe- riment, 23 suffered from exudative diathesis and 3 died without any sign of exudative diathesis, while in the 12.4% protein group only one of the 26 chickens suffered from exudative diathesis during the 14 days experiment and 6 of the 12 chickens in this group observed for another two weeks showed exudative diathesis. In the 18.2% protein group the first chicken with signs of exudative diathesis appeared on the 9th day while it appeared on the 14th day in the 12.4% protein group.How to improve the selenium nutritional status of the residents in Ke-shan Disease areas was discussed.