Health/Nutrition
Controlling flies in cow-calf operations
One of the realities of beef production in Oklahoma is dealing with significant fly…
Apr 24, 2026 · By Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist
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The Latest Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist News
The Latest Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist news from Western Livestock Journal.
Beef
Impact of selection pressure applied to marbling
In recent years, there has been a significant increase in the percentage of fed cattle in…
Apr 17, 2026 · By Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist
Beef
Beef carcass quality continues to increase
The percentages of USDA Select and Prime grade beef carcasses continue to shift in…
Apr 10, 2026 · By Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist
Health/Nutrition
Do you have adequate bull power?
It is time for bull turnout for herds that calve in January.
Apr 3, 2026 · By Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist
Health/Nutrition
Selection pressure is a precious commodity
Selection and mating decisions in cow-calf herds need to be made with a clear objective in mind.
Mar 27, 2026 · By Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist
Health/Nutrition
Calving ease and the selection for extremes
Several conversations with cattle breeders over the past few weeks while attending bull sales led to…
Mar 20, 2026 · By Mark Z. Johnson, Oklahoma State University Extension beef cattle breeding specialist