Improving the productivity of breeding colonies of Mongolian gerbils (Meriones unguiculatus).

نویسندگان

  • M M Clark
  • C A Spencer
  • B G Galef
چکیده

The productivity of breeding colonies of Mongolian gerbils can be substantially enhanced by using as breeding stock only the 40% of females that exhibit vaginal opening before reaching 25 days of age. Early-maturing females are more likely to breed successfully on first pairing. The lifetime fecundity of early-maturing females is more than twice that of their late-maturing sisters. In those cases in which early-maturing females fail to breed with the first male with which they are paired, they (but not late-maturing females) can be mated with a second male with a high probability of success. Two-thirds of the early-maturing females that failed to reproduce following a first pairing became pregnant following a second. Only 11% of late-maturing females did so.

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عنوان ژورنال:
  • Laboratory animals

دوره 20 4  شماره 

صفحات  -

تاریخ انتشار 1986