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Results for “Fecundability”

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PubMed1983

[Effect of elevated levels of natural radioactivity on the fecundity of male mice].

Male mice of the BALB/c strain were placed on the floor of a hut built at a site of Southwest France where the dose rate of gamma radiation amounts to about 10 mrad/h. Controls were kept near the radioactive site under comparable conditions. The doses of gamma rays received during a seven month period ranged from 0.1275 rad for the controls to 45 rad and 63 rad for the exposed animals. Due, possibly, to an effect on the libido exposure to 45 rad increased the fertility whereas the animals given 63 rad produced less offspring than the controls.

Animals↗
PubMed1983

[Influence of ultrasonics on the fecundity of female rats].

We have studied the effects of ultrasound on the female rat fertility. When utilized at similar power than for human beings, the echography reduces significantly the number of foetus counted at the 15th day of the gestation. A direct action of the ultrasounds on the mechanisms of the ovulation is to be considered.

Animals↗
PubMedDate not supplied

The effect on fecundity of pill acceptance during postpartum amenorrhea in rural Bangladesh.

The length of the interval from last live birth to the subsequent pregnancy was studied for 121 contraceptive pill acceptors who were in postpartum amenorrhea at the time of acceptance and 121 matched nonacceptors in a prospective study in Matlab, Bangladesh. Half of the pill acceptors discontinued use within seven months, and as a group the pill acceptors had a significantly shorter interval to the next pregnancy than the matched nonacceptors. These findings suggest that unless continuation rates can be improved, it is better not to encourage women in rural Bangladesh to start the contraceptive pill during postpartum amenorrhea.

Adult↗