At Greenley, the improved protocol gave best success in breeding second-calf cows. Beef farmers know those as difficult to get bred and kept in the herd.
Pregnancies of two-year-old cows ran 77%. "While that may not be statistically significant, it shows where we are going," Thomas added. Data from other herds supports local results.
MU researchers checked pregnancies in the Greenley herd last week, using ultrasound.
Farmers have proven protocols on the shelf, ready to use for both cows and heifers. "We keep refining them," Thomas added.
The AI protocols will be explained in detail at the MU Thompson Farm Field Day, Spickard, Sept. 17. Thompson Farm provides initial field testing for fixed time AI research.
Source: University of Missouri Extension