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Kansas Agricultural Experiment Station Research Reports
1996; Kansas Agricultural Experiment Station contribution; no. 96-334-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 756; Beef; GnRH; Norgestomet; PGF2; Heat synchronization; Prepubertal heifers; Anestrous suckled cows
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Pregnancy Rates In Heifers And Suckled Beef Cows After Synchronized Ovulation Using Pgf2", Gnrh, And Norgestomet, D.P. Hoffman, Jeffrey S. Stevenson, C.L. Krehbiel, David A. Nichols, R.M. Mckee
Pregnancy Rates In Heifers And Suckled Beef Cows After Synchronized Ovulation Using Pgf2", Gnrh, And Norgestomet, D.P. Hoffman, Jeffrey S. Stevenson, C.L. Krehbiel, David A. Nichols, R.M. Mckee
Kansas Agricultural Experiment Station Research Reports
Suckled cows and virgin heifers received a novel treatment that included PGF 2", GnRH, and norgestomet, with the objective of inducing estrus in prepubertal heifers and anestrous suckled cows, as well as synchronizing ovulation in estrus-cycling females. The treatment consisted of two injections of PGF 2" (day 14 and 0) plus 100 Fg of GnRH and a 6-mg norgestomet ear implant on day 7. The implant was removed 24 h after the second injection of PGF2" (day 0), and a second injection of GnRH was given 30 hours after implant removal. The treated females were inseminated 18 hours after the …