![كتاب The effects of ketoprofen on ovarian function in dairy cows](https://www.pdf-books.org/kutubpdfcafe/cover/imagenotfound.webp)
الكاتب: Multiple References
Two experiments were conducted to investigate the effects of ketoprofen on ovarian function in dairy cows. In experiment I, eight non-milking dairy cows were administered a 0.9% saline solution daily from day 8 (day −3) of ensuing synchronized estrous cycle at 24-h intervals over 4 days (control observation). After an estrous cycle rest, the cows were given the recommended daily therapeutic dose (3 mg/kg, i.m.) of ketoprofen (Ketofen 100; 10%, Merieux/Webster, Australia) from day 8 (day −3) of the synchronized estrous cycle at 24-h intervals over 4 days. All cows received an intramuscular injection of prostaglandin F2α (30 mg, Lutalyse) either 6 h before the first treatment of saline solution or 6 h before the first injection of ketoprofen. Ultrasonography of the ovaries was performed daily from the day before (day −4) experimental treatments until day 2 after induced estrus, to monitor the growth of the ovulatory follicle and ovulation, and then on day 9 after estrus to determine the presence and the size of the corpus luteum. In experiment II, five non-milking dairy cows were used in two successive observations. The plasma preovulatory estradiol-17β peak and progesterone concentrations were determined, and ovarian ultrasonography was performed to determine ovulation and corpus luteum development. Results obtained from experiment I showed that the diameter of dominant ovulatory follicle on day of estrus was significantly (p
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