title: Plasma progesterone profiles and embryo quality in superovulated Japanese Black cattle.
abstract: The relationship between plasma progesterone (P(4)) levels before and after superovulation treatment and embryo yield and quality was examined in Japanese Black cattle. It is concluded that a plasma P(4) level at the start of follicle stimulating hormone (FSH) injections is related to embryo quality. The P(4) level of over 3.0 ng/ml appears to be useful in preselection of donors when we want to get more than 8 normal (transferable) embryos on the average.
authors.affiliation: Laboratory of Animal Reproduction Department of Animal Science Faculty of Agriculture Kagoshima University Kagoshima 890, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Goto
authors.forename: Y
authors.initials: Y
authors.lastname: Nakanishi
authors.forename: S
authors.initials: S
authors.lastname: Ohkutsu
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.forename: M
authors.initials: M
authors.lastname: Tasaki
authors.forename: M
authors.initials: M
authors.lastname: Ohta
authors.forename: S
authors.initials: S
authors.lastname: Inohae
authors.forename: S
authors.initials: S
authors.lastname: Tateyama
authors.forename: T
authors.initials: T
authors.lastname: Kawabata