Superovulatory Response in Holstein Cows with Follicular Cysts
نویسندگان
چکیده
منابع مشابه
Follicular cysts in dairy cows
Follicular cysts are the most critical reproductive disorder in dairy cows and disturb normal ovarian cycle, resulting in the prolonged interval from calving to conception. Therefore, this condition causes significant economic losses to the dairy industry. Two direct causal factors of cyst are suggested in this review; the disorder of ovulation and the delay of regression. The disorder of ovula...
متن کاملRelationships between the number of small follicles prior to superovulatory treatment and superovulatory response in Holstein cows.
In order to determine relationships between the number of small follicles prior to superovulatory treatment and superovulatory response, a total of 55 superovulations were induced in Holstein cows. The ovaries were examined ultrasonographically once 0-1.5 days before the initiation of superovulatory treatment. The number of small follicles 3-6 mm in diameter on both ovaries before superovulator...
متن کاملClinical response of dairy cows with ovarian cysts to GnRH.
One-hundred-fourteen cows (30 Guernsey and 84 Holstein), diagnosed as having ovarian cysts via rectal palpation, were treated at randon with a single IM injection of either 50, 100 or 250 /lg synthetic gonadotropin-releasing-hormone (GnRH) or a sham injection of the carrier vehicle for GnRH (0 /~g). All animals were from one Guernsey and three Holstein herds maintained on a reproductive herd he...
متن کاملAssociation between liver failure and hepatic UDP-glucuronosyltransferase activity in dairy cows with follicular cysts
Uridine 5'-diphospho-glucuronosyltransferase (UGT) liver activity was measured using estradiol-17β as a substrate in dairy cows with follicular cysts. The activity was significantly lower than that in dairy cows with normal estrous cycles (P<0.01). Liver disorders, such as fatty liver and hepatitis, were observed in half cows with follicular cysts, and liver UGT activity was lower than that in ...
متن کاملA comparison of adrenal gland function in lactating dairy cows with or without ovarian follicular cysts.
Two experiments were conducted to determine if adrenal secretion of steroids differed between cows that formed ovarian follicular cysts and normal cycling cows. In experiment 1, lactating Jersey and Holstein cows were diagnosed as having ovarian follicular cysts (follicle diameter >or=20 mm) by rectal palpation. Following diagnosis, ovaries were examined by transrectal ultrasonography three tim...
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ژورنال
عنوان ژورنال: Journal of the Japan Veterinary Medical Association
سال: 2001
ISSN: 0446-6454,2186-0211
DOI: 10.12935/jvma1951.54.659