Archive for the ‘Ovary’ Category - Part 3

Medroxyprogesterone Acetate: MATERIALS AND METHODS(3)

Ovarian data summary and analyses. A follicular wave was defined as one or more antral follicles that grew from 3 to >5 mm in diameter; the day the follicles were detected at 3 mm was the day of emergence. Groups of follicles emerging within 48 h were included in a wave. The characteristics of ovulatory […]

Medroxyprogesterone Acetate: MATERIALS AND METHODS(2)

The remaining seven ewes served as untreated controls. Daily transrectal ultrasonography of ovaries (performed between 1300 and 1500 h) started at —Day 5 after ovulation. The size and position of CL and ovarian antral follicles >3 mm in size were then recorded for 19 days. Ovarian ultrasonography was performed using a real-time, B-mode echo camera […]

Medroxyprogesterone Acetate: MATERIALS AND METHODS(1)

Animals and Procedures: Experiment 1 Care and treatment for experimental animals was carried out according to guidelines issued by the Canadian Council on Animal Care. Fourteen sexually mature, clinically healthy, cyclic Western white-faced ewes were used in the study, which was conducted from September to November. Estrus was initially synchronized in 24 ewes by a […]

Medroxyprogesterone Acetate: INTRODUCTION

Cyclic ewes have regular, emerging waves of antral follicles that grow to ovulatory diameters (>5 mm) before regression or ovulation. The interovulatory interval typically consists of three or four follicular waves. In nonprolific breeds such as the Western white-face, Suffolk, Texel, and Ile-de-France, ovulatory follicles originate mostly in the last wave of the cycle, but […]

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