"LITTER SIZE AND PROPORTION OF FEMALES IN THE OFFSPRING OF MULTIPAROUS " by A. B. Schutz

Animal Science, Department of

 

Department of Animal Science: Faculty Publications

Document Type

Article

Date of this Version

1965

Comments

Published in J. Reprod. Fert. (1965) 10, 145-147. Copyright © 1965 Journal of Reproduction and Fertility. Used by Permission

Abstract

The rate of TTC reduction by the uterine tissue of rats was determined at specific stages of the oestrous cycle, and in successive cycles at the same stage. Individual females showed a characteristic level of reaction to TTC. Mothers whose uteri had a high reaction rate with TTC produced litters with a higher percentage of female pups than did mothers with a low level of reaction. Previous studies have shown that TTC reduction rate represents a metabolic activity of uterine tissue that is induced by oestrogens.

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