Cattlemen's Day, 1997

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Recent Submissions

Effect of heifer source on reproductive performance, culling, marketing and profitability for a commercial heifer development program

Lynch, J.M.; Lamb, G.C.; Grieger, D.M.; Corah, L.R. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)

A commercial heifer development operation purchased 483 weanling Angus × Hereford heifers from 11 sources. Heifers were fed a common silage-based diet through an initial developmental period and retained or culled based ...
Reproductive performance of replacement heifers implanted as young calves or at weaning

Grieger, D.M.; Corah, L.R.; Spell, A.R.; Cook, D.L.; Butine, M.D.; Anderson, K. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)

This study evaluated the effect of implanting potential replacement heifers (n=548) with Component E-C® (10 mg of estradiol and 100 mg of progesterone) between 45 and 120 days of age or at weaning (200 days of age) ...
Estrus detection, first service conception, and embryonic death in beef heifers synchronized with MGA and prostaglandin

Lamb, G.C.; Miller, B.L.; Traffas, V.; Corah, L.R. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)

In April, 1996, 1501 yearling crossbred heifers located on seven different ranches were estrus-synchronized and artificially inseminated (AI) 12 hours after they were detected in estrus. Herd size ranged from 82 to 43 ...
A novel estrus-synchronization program for anestrous and cycling, suckled, beef cows

Forbes, W.L.; Corah, L.R.; Grieger, D.M.; Thompson, K.E.; Lamb, G.C.; Stevenson, J.S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)

We used four herds at three Kansas ranches to evaluate the potential of two new estrus synchronization strategies to increase estrus expression and fertility of 911 crossbred suckled beef cows. The treatments included: ...
Fertility after timed breeding using GnRH, PGF2, and norgestomet

Thompson, K.E.; Stevenson, J.S.; Grieger, D.M.; Lamb, G.C.; Marple, T.J.; Corah, L.R.; Nichols, D.A.; McKee, R.M. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)

At the KSU Purebred Unit, 164 purebred Angus, Hereford, and Simmental cows were used to test a new estrus-synchronization program using GnRH, PGF2, and norgestomet. Cows were inseminated after detected estrus, or in ...

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