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2006; Kansas Agricultural Experiment Station contribution; no. 06-205-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 959; Beef; CIDR; MGA; 7-11 cosynch; Heifers
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Comparison Of Cidr To Mga In A 7-11 Cosynch Protocol With Timed Insemination Of Beef Heifers (2006), D.R. Eborn, G.E. Freneau, David M. Grieger
Comparison Of Cidr To Mga In A 7-11 Cosynch Protocol With Timed Insemination Of Beef Heifers (2006), D.R. Eborn, G.E. Freneau, David M. Grieger
Kansas Agricultural Experiment Station Research Reports
Previous research has shown that the 7-11 Cosynch protocol using melengestrol acetate (MGA) is effective in synchronizing beef heifers. This study compared MGA and a vaginal insert containing progesterone (CIDR) in the 7-11 Cosynch protocol on beef heifers. Replacement beef heifers (n=179) from three herds were assigned to MGA or CIDR treatments. Beginning on day 1, heifers on the MGA treatment were fed to consume 0.5 mg daily of MGA for 7 days. On day 7, the last day of MGA feeding, the MGA heifers received an injection of Lutalyse (PGF). Heifers on the CIDR treatment received a CIDR on …