PMSG profiles in superovulated and anti-PMSG antiserum treated mice and heifers with enzymeimmunoassay.

Effects of LH-RH analogue on the ovulation rate and embryo quality in heifers superovulated with PMSG and PGF2 alpha.

Fertilizability of Superovulated Eggs by Estrous Stage-independent PMSG/hCG Treatment in Adult Wistar-Imamichi Rats

We investigated the fertilization and developmental ability of superovulated eggs obtained from adult Wistar-Imamichi (WI) rats, by using pregnant mare serum gonadotropin (PMSG) and human chorionic gonadotropin (hCG) treatment. Female WI rats, 11-13 weeks of age, were divided into four groups by estrous stage (metestrus [ME], diestrus [DE], proestrus [PE], or estrus [E]). PMSG (150 IU/kg) and h...

Ovulation, fertility and prenatal mortality in heifers treated with PMSG or porcine FSH.

Ovulation rate, fertilization rate and prenatal mortality were studied in yearling beef heifers treated with PMSG or FSH and in non-treated controls. Oestrus was synchronized in 50% of the animals in each treatment with an oral progestagen. The gonadotrophin injections were given during the normal oestrous cycle or during the progestagen-administration period. All heifers were inseminated 6 to ...

Endocrine and reproductive response of beef cows to PMSG.

Thir ty-one 3-year-old Angus cows and 23 2-year-old Angus heifers were randomly allotted to two t rea tment groups to examine the influence o f PMSG on endocr ine and reproductive responses. Sixteen cows and 11 heifers received a single subcutaneous inject ion of 2,000 IU PMSG on day 17 o f the estrous cycle (Trt 17); 15 cows and 12 heifers received 1,500 IU PMSG on day 5 and 2,000 IU on day 17...

Biochemical status of ovaries after induction of superovulation on different days of estrus cycle in mice.

To investigate the role of ovarian status and to find out a suitable hormonal dose for induction of superovulation and its effect on biochemical status of the ovaries, the mice were injected with PMSG in doses of 5, 7.5, and 10 IU on different days of the estrous cycle i.e. proestrus, estrus, metestrus and diestrus followed by hCG injection 48 hr later. All these treatments increased the mean o...