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Brazilian Journal of Medical and Biological Research

Print version ISSN 0100-879XOn-line version ISSN 1414-431X


MARQUES-DE-ARAUJO, S.  and  CARDOSO, M.A.. A laboratory cage for foster nursing newborn mice. Braz J Med Biol Res [online]. 1999, vol.32, n.3, pp.319-321. ISSN 0100-879X.

We describe a cage to be used for foster nursing in order to guarantee that original mother's colostrum is not ingested by the newborn mice. A common (30.5 cm x 19.5 cm x 12.0 cm) mouse cage was fitted with a wire net tray with a mesh (1 cm x 1 cm), which divides the cage into an upper and a lower compartment. Mice born to females placed in the upper compartment pass through the mesh and fall into the lower compartment, where another lactating female with one or two of its own pups are. Of a total of 28 newborn mice of C3H/He and Swiss strains, 23 were successfully fostered. Important observations are presented to show that this is a valuable alternative for foster studies without great suffering on the part of the female.

Keywords : foster nursing techniques; foster mother; cage for fostering; fostering.

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