Norgestomet, or norgestamet, sold under the brand name Syncro-Mate B and Crestar, is a progestin medication which is used in veterinary medicine to control estrus and ovulation in cattle. [1] [2]

Jul 1, 1990 · Eleven ovariectomized Hereford × Simmental cows and 10 ovariectomized crossbred heifers (primarily Angus and Hereford) were given the Syncro-Mate B (SMB) estrous synchronization treatment.

attempt to control the estrous cycle of cattle. One method. start their next cycle at about the same time. Another. allowing the animals to start a new cycle. these two methods could also be used to synchronize estrus. Cassida, 19^8). They found daily injections of 50 mg of pro- gesterone would suppress estrus and ovulation. Subsequently,

Three products, Lutalyse, Estrumate and Bovilene, have been approved for use in beef cows and heifers for estrous synchronization. All are prostaglandins and work similarly, but differ slightly in their chemical makeup with different half-lives and dosage levels.

Our data indicate that the SMB treatment can induce estrus in cows and heifers, independently of the ovaries. Eleven ovariectomized Hereford x Simmental cows and 10 ovariectomized crossbred heifers (primarily Angus and Hereford) were given the Syncro-Mate B (SMB) estrous synchronization treatment.

Available procedures to control the estrous cycle of the cow can improve reproductive rates and speed up genetic progress. These procedures include synchronization of estrus in cycling females, and induction of estrus accompanied by ovulation in heifers that have not yet reached puberty or among cows that have not returned to estrus after calving.

Sep 1, 1987 · Syncro-Mate-B has been shown to be an effective means of synchronizing the estrous cycle in European breeds of cattle (!-8). Pituitary and ovarian function during 15) and following (8) synchronization of estrus with Syncro-Mate-B …

Two trials involving 85 heifers and 67 cows were conducted to determine the effect of estrous cycle stage at the time of Syncro-Mate-B((R)) (SMB) treatment on interval to estrus following implant removal and on conception rate at the synchronized estrus.

Syncro-Mate B® was capable of inducing estrous behavior in ovariectomized cows. Lengthening the norgestomet implant period from 9 to 18 days did not prevent estrus. The ability of Syncro-Mate B to induce estrous behavior in ovariectomized cows helps explain the variable conception rates obtained after using this product in intact cows.

Three hundred and ten yearling heifers of various breeds were used in five trials to compare two estrus synchronization treatments. Treatment 1 consisted of Melengestrol Acetate-Prostaglandin F (2)alpha (MGA-PGF (2)alpha). Heifers were fed 0.5 mg MGA/head/d for 14 to 16 d.