|
|
||||||||
Abstract
The results of three series of experiments in which further study of the sterility syndrome in the rabbit fed soybean hay are reported.
Supplementing the soybean hay-wheat diet at the indicated levels with d-l methionine, carotene (ß 90 percent and
10 percent)
-to-copherol, 2 methyl-naphthoquinone, vitamin A, progesterone, vitamin B12, choline or steamed bone meal failed to alleviate the sterility symptoms or improve the reproductive performance of females over that of females receiving no supplements.
Plasma and liver vitamin A levels in the females fed the soybean hay-wheat diet appeared to be normal without carotene or vitamin A supplementation. Plasma tocopherol levels also appeared normal. These findings suggest that this syndrome is not directly associated with the levels of these vitamins even though the nature and incidence of the syndrome parallels in many respects that of the vitamin A or E deficient animal.
The feeding of soybean hay, autoclaved at 120°C. for 30 minutes, was ineffective in alleviating the syndrome. This would suggest that the causative factor or factors are probably not enzymic in nature.
1 Department of Dairy Science, Urbana, Illinois.
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |