title: [Selection of laboratory rats for fertility components under conditions of estrus synchronization with Suisynchron-Praemix. 3. Results of puberty parameters].
abstract: The following results, in the context of puberty parameters, were recorded from laboratory rats, eight generations after Suisynchron-Prämix was begun to be used for synchronisation of oestrus, in studies on selection for fertility: -- Correlated success of selection in terms of earlier onset of puberty were found to exist in both oestrussynchronised and unsynchronised populations selected for fertility. The timing of both vaginal opening and first oestrus as well as weight parameters were affected. -- Earlier onset of puberty was interpreted as a consequence of elevated oestrogen level resulting from selection for fertility. -- Puberty characteristics were not influenced by synchronisation of oestrus.
mesh_terms: D000375:Aging; D000818:Animals; D000830:Animals, Laboratory; D004971:Estrus; D004973:Estrus Synchronization; D005260:Female; D005298:Fertility; D008098:Litter Size; D010641:Phenotype; D011247:Pregnancy; D051381:Rats / Q000235:genetics* / Q000502:physiology; D014621:Vagina / Q000502:physiology
vernacular_title: Selektion auf komponenten der Fruchtbarkeit bei der Laboratoriumsratte unter den Bedingungen der Brunstsynchronisation mit Suisynchron-Prämix 3. Mitteilung: Ergebnisse der Pubertätsmerkmale.