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Reproduction of pseudomys novaehollandiae muridae in the laboratory



Reproduction of pseudomys novaehollandiae muridae in the laboratory



Australian Journal of Zoology 24(2): 159-167



Estrous cycle, gestation, parturition, litter size, lactation and sexual maturity were studied in a captive colony of the Australian murid P. novaehollandiae. The pattern of reproduction was similar to that of other murids, although estrous cycle (6.0 .+-. 1.26 days) and gestation period (31.5 .+-. 0.96 days) were longer than those in laboratory rat and mouse. Changes in the external appearance of the vagina were too inconsistent to identify stages of the estrous cycle, but were of use in determining the stage of pregnancy or lactation. Parturition took place during the light phase of the day-length regime, with post-partum estrus during the following dark phase. Weight changes in pregnant and lactating females were considered. The average litter size was 4.0 .+-. 1.03 with a range of 1-6. Estrus was inhibited during lactation and recurred about 24 days after parturition. Sexual maturity was earlier in females (13 wk) than in males (20 wk).

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Accession: 006315942

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DOI: 10.1071/zo9760159


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