The effects of exogenous melatonin on reproductive performance of 737 Polypay and Polypay-cross ewes were evaluated during a late March and April breeding period. Different concentrations (2 or 10 mg) routes of administration (fed vs implanted) and durations of administration (20 or 40 d before breeding) were studied. Estrus was synchronized in all ewes using 60 mg medroxyprogesterone acetate (...

INTRODUCTION We aimed to evaluate the local incidences of hydronephrosis and renal impairment in the presence of severe uterovaginal or vault prolapse, and determine whether treatment by surgery or ring pessary resulted in the resolution of hydronephrosis in these patients. METHODS This was a retrospective case study of 121 patients who presented with severe uterovaginal or vault prolapse. Al...

Ultrasonic appearance probably indicative of imminent fetal death One of the difficulties in recognising fetal death by ultrasonic scanning in early pregnancy is that the negative finding of no fetal heart movement must always be less convincing than a positive finding. Furthermore, Robinson' found only one instance of irregularity of the fetal heart in ten cases scanned before their pregnancie...