Four‐year study of controlled timed breeding of rhesus monkeys ( Macaca mulatta )

As part of the timed breeding colony at Tulane National Primate Research Center, exogenous progesterone administration (5 mg/day for 10 days) has been used to select conception dates by inducing artificial luteal phases in female rhesus monkeys. A retrospective analysis of data obtained during four breeding seasons (1998–2001) revealed that conceptions occurred an average of 18 days after the last administration of progesterone. The age of the female to be bred, previous pregnancy history, and timing of breeding during the breeding season were determined to be critical factors in the success of the procedure. The benefit of this method of timed breeding is that it does not require tracking of menstrual cycles, which can be labor‐intensive and requires that animals be monitored several months in advance of breeding to determine each female's individual cycle length. It also provided an efficient use of breeding‐age males. Am. J. Primatol. 60:23–28, 2003. © 2003 Wiley‐Liss, Inc

Animal science · Biology · Captive breeding · Luteal phase · Pregnancy · Primate · Seasonal breeder · Zoology · Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities · Reproductive Physiology in Livestock · Reproductive System and Pregnancy · Ecology · Genetics · Physiology

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