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Kansas Agricultural Experiment Station Research Reports
2009; Dairy; Reproduction; Estrus; Fertility; Luteolysis; Ovulation; Timed artificial insemination
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Luteolysis And Pregnancy Outcomes In Dairy Cows After Treatment With Estrumate Or Lutalyse (2009), Jeffrey S. Stevenson
Luteolysis And Pregnancy Outcomes In Dairy Cows After Treatment With Estrumate Or Lutalyse (2009), Jeffrey S. Stevenson
Kansas Agricultural Experiment Station Research Reports
In Experiment 1, lactating dairy cows (n = 1,230) in 6 herds were treated with 2 injections of prostaglandin F2α(PGF2α) 14 days apart (Presynch), with the second injection administered 12 to 14 days before the onset of a timed AI protocol (Ovsynch). Cows were inseminated when detected in estrus after the Presynch PGF2αinjections. Cows not inseminated were enrolled in the Ovsynch protocol and were assigned randomly to be treated with either Estrumate or Lutalyse as part of a timed artificial insemination (AI) protocol. Blood samples were collected before treatment injection (0 hour) and 48 and 72 hours later. In cows …