Trans-vaginal oocyte retrieval and subsequent in vitro production of embryos from a cow involuntarily culled.

A Holstein cow of high genetic merit, in late lactation (205 days) and diagnosed with salpingitis (after 4 infertile services and veterinary consultation), was subjected to 1 trans-vaginal oocyte collection attempt, prior to slaughter. Of an estimated 10 follicles punctured, a total of 4 cumulus-oocyte complexes were retrieved. These were matured in vitro in a maturation medium for 24 hours.

'Dyschronia' in a patient with Tourette's syndrome presenting as maternal neglect.

We report an unusual and unsuspected cause of maternal neglect in a patient with Tourette's syndrome. An important cause of the behaviour appears to have been a form of dyscalculia characterised by a complete inability to appreciate the passage of time. To our knowledge this is the first case of its kind to be reported.

Modification by propylene glycol of ovulation rate in ewes in response to a single injection of FSH.

Five experiments were conducted with the objective of developing a method to induce superovulation in ewes with a single i.m. injection of FSH.

Factors affecting fertility in the postpartum cow: role of the oocyte and follicle in conception rate.

Four experiments were designed to examine the contribution of the oocyte or the follicular, oviductal, or early uterine environments to low fertility associated with the first ovulation postpartum. At 17-25 days postpartum in experiments 1, 2, and 3, suckled beef cows were assigned at random to receive 6 mg norgestomet, via ear-implant, for 9 days (NOR) or to serve as controls (CON). Calves were weaned from all cows 7 days after assignment to treatment in order to induce estrus, an LH surge, ovulation, and subsequent formation of CL.