Superovulation of Japanese black heifers treated with FSH-P and FSH-R.
The effects on superovulation in beef heifers of two kinds of porcine FSH preparations with different LH content, FSH-P and FSH-R, were compared. Forty-two heifers of the Japanese Black Breed received a total dose of 28AU of FSH-P containing 6.5% LH or FSH-R containing 0.58% LH intramuscularly, in a descending manner for four days. The mean numbers (+/- SD) of obtained ova/embryos and transferable embryos were 4.9 +/- 2.3, 1.5 +/- 0.9 and 11.2 +/- 2.4, 4.8 +/- 1.4, respectively. FSH-R treatment yielded a significantly greater number of ova/embryos and transferable embryos than FSH-P treatment (P < 0.05).
Yamamoto
M
M
United Graduate School of Veterinary Science, Yamaguchi University, Japan.
Ooe
M
M
Fujii
C
C
Suzuki
T
T
D000818:Animals; D002417:Cattle / Q000502:physiology*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000494:pharmacology*; D013480:Superovulation / Q000187:drug effects*; D013552:Swine
D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone