Use of highly purified porcine FSH preparation for superovulation in Japanese black cattle.
Fifty cattle were divided into 3 groups (I, II, III) according to FSH-R dosage used to induce superovulation between days 9 and 11 of the estrous cycle. Ova/embryo recovery rate did not differ significantly between groups I and II administered total dosages of 16 and 24 mg, respectively. However, the average number of recovered ova/embryos and transferable embryos was significantly lower in group III (administered a total dosage of 30 mg) (P < 0.05) than groups I and II. These results suggest that intramuscular administration of 16 mg FSH-R over 3 days is sufficient for inducing superovulation in Japanese Black cattle.
Sugano
M
M
Fukushima Animal Husbandry Experiment Station, Japan.
Watanabe
S
S
D000818:Animals; D002417:Cattle / Q000235:genetics / Q000502:physiology*; D004305:Dose-Response Relationship, Drug; D004971:Estrus / Q000502:physiology; D005260:Female; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D007273:Injections, Intramuscular; D007564:Japan; D013480:Superovulation / Q000187:drug effects* / Q000502:physiology; D013552:Swine; D013997:Time Factors
D005640:Follicle Stimulating Hormone