Abstract
Summary
Embryonic molybdenum toxio ity may be studied through use of the breeder hen. The feeding of 500 ppm of molybdenum to hens for longer than 2 weeks results in eggs having a concentration of between 16-20 ppm of molybdenum. This dietary level does not limit egg production too severely (ca. 20% reduction) but does result in the death of all embryos during the incubation period. Analysis of the tissues from the molybdenum fed hens showed that the ovary and the uterus had the highest concentrations of molybdenum (150 and 148 ppm, respectively) .
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