Electrophoretic Homogeneity of Pregnant Mare Serum Gonadotrophin

Effect of gonadotrophin-releasing hormone aned human chorionic gonadotrophin on the response of the ewe to pregnant mare serum gonadotrophin.

An experiment was conducted to determine whether gonadotrophin-releasing hormone (Gn-RH) or HCG would reduce the proportion of unruptured follicles in the Galway ewe following a high superovulating dose of PMSG given in conjunction with a progestagen to synchronize oestrus. Forty-four Galway ewes aged 1\m=1/2\to 5 years (average wt 64\m=.\7kg) were treated with intravaginal pessaries impregnate...

Ovarian response after four continuous administrations of gonadotrophin in beef cattle.

After 4 repeated treatrnents of gonadotrophin, 8 beef cattle showed an average of 12.1, 10.1, 12,1 and 8.4 corpora lutea at the lst, 2nd, 3rd and 4th treatments, respectively, However, different dosages of gonadotrophin ranging from 1,600 to 3,5001U of pregnant mare's serum gonadotrephin (PMSG}, were used. The average number of corpora lutea decreased from 12.4, 8,4, 9,8 and 6.0 cluring the lst...

Pregnant mare serum gonadotropin. Rapid chromatographic procedures for the purification of intact hormone and isolation of subunits.

A method exploiting hydroxylapatite chromatography was developed to purify pregnant mare serum gonadotropin (PMSG or eCG) to high biological activity from partially purified commerical preparations. In addition, an alternative method utilizing chromatography on quaternary aminoethyl (QAE)-Sephadex and Sephadex G-200 is also presented. Both procedures are capable of producing, from commerical ma...

response of lactating karakul ewes to two levels of exogenous estradiol 17.B along with progesterone and pregnant mare serum for induction of fertile estrus at early postpartum

Gonadotrophin stimulation of donor females decreases post-implantation viability of cultured one-cell hamster embryos.

Hamster one-cell embryos were collected from two groups of donors: females that were super-stimulated with pregnant mare's serum gonadotrophin (PMSG) and females that were not. Embryos were cultured for 72 h and scored for development. Morulae and blastocysts from the PMSG- and non-stimulated females were transferred into contralateral uterine horns of non-stimulated recipient females, so that ...