The Adverse Effect of Raw Whale Liver on the Breeding Performance of Female Mink

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Abstract
In an experiment in which rations containing codfish and whale products were fed to breeding mink, increasing to 10% from 5% the quantity of whale liver in the ration resulted in a significantly greater number of unsuccessful pregnancies. It is postulated that the quantity of vitamin A derived from the higher level of whale liver was sufficient to have provoked a hypervitaminosis A, which adversely affected the reproductive ability of the female mink.