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Reproduction, infant survival and productivity of a colony of common marmosets (Callithrix jacchus jacchus)

Reproduction, infant survival and productivity of a colony of common marmosets (Callithrix jacchus jacchus)

Laboratory Animals 16(1): 88-97

Starting with 4 pairs of marmosets, 204 young were successfully reared during 6 years. They were kept in family groups of 2- 10. Litter size varied from 1-4; singletons (2%), twins (35%), triplets (55%), and quadruplets (8%). The mean annual increase of weaned young was 3.24 per pair. The median interbirth interval was 154 days. Of 46 pairs of marmosets, 8 failed to produce young. Approximately 11% of young born were stillborn and a further 32% of all young born died within 3 weeks; perinatal mortality is largely a result of the failure of parents to rear more than 2 young. In only 2 of 68 triplet births did the parents rear the young unaided. 53% of young born were males but differential mortality reduced the final sex ratio for live young to 50-5% males. Females did not accept and rear the young after caesarian section. The linear regression of the growth curve for 5-17 months (where y = weight in grams and x = months) could be expressed as y = 16.6x + 163.6. The data form 4 marmoset colonies are compared and the relative efficiency of breeding methods discussed.

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Accession: 006315817

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PMID: 6801393

DOI: 10.1258/002367782780908760

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