The effect of the sex of litter-mates on the subsequent behaviour and breeding performance of cross-fostered rats

The response to drugs, the reaction to handling, and the breeding performance of rats bred in unisexual and in bisexual cross-fostered litters were compared. There was no significant difference in their response to drugs, although bisexually-reared animals consistently gave a more precise dose-respo...

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Veröffentlicht in:Laboratory animals (London) 1973-01, Vol.7 (1), p.51-59
Hauptverfasser: Sharpe, R M, Morris, A, Wyatt, A C
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creator Sharpe, R M
Morris, A
Wyatt, A C
description The response to drugs, the reaction to handling, and the breeding performance of rats bred in unisexual and in bisexual cross-fostered litters were compared. There was no significant difference in their response to drugs, although bisexually-reared animals consistently gave a more precise dose-response line to gonadotrophin. When handled unisexually-reared males defaecated more frequently and squeaked more loudly than bisexually-reared males, a difference not evident in the females. The rate of attainment of sexual maturity was similar in both rearing types but, when mated, bisexually-reared females produced larger litters.
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source MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Animals
Animals, Newborn
Behavior, Animal
Body Weight
Breeding
Chorionic Gonadotropin - pharmacology
Defecation
Female
Fertility
Gonadotropins, Equine - pharmacology
Male
Organ Size
Prostate - anatomy & histology
Rats - physiology
Seminal Vesicles - anatomy & histology
Sex Factors
Testis - anatomy & histology
Vagina - physiology
Vocalization, Animal
title The effect of the sex of litter-mates on the subsequent behaviour and breeding performance of cross-fostered rats
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