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Calomys laucha (Rodentia, Cricetidae): growth and breeding in laboratory conditions

, : Calomys laucha (Rodentia, Cricetidae): growth and breeding in laboratory conditions. Laboratory Animals 23(4): 340-344

The husbandry and breeding of Calomys laucha (Rodentia, Cricetidae) in captivity are described. Growth curves based on body weight and length showed statistical differences between sexes after 45 days, males being heavier than females. The overall reproductive efficiency was 53.4% but birth rate was depressed during winter. Gestation length was 21 +/- 1 days and females exhibited postpartum oestrus with a 3-7 day implantation delay (51%). Litter size was 5.3 +/- 1.1 (n = 34). Pup survival at weaning was 84.9%. Mean life span in laboratory conditions was 13.5 months and a cumulative mortality of 90% was reached at 27-28 months of age.

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Accession: 002042196

PMID: 2681995

DOI: 10.1258/002367789780745962

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