Glenn Selk

Heat stress can reduce pregnancy rates

The effects of heat stress on reproductive performance of beef cows have been discussed by many animal scientists in a variety of ways. FULL STORY »

This year test the forage before you cut!

Summer has definitely arrived in Oklahoma! Hot dry summer weather brings about heat and drought stress on summer annuals. FULL STORY »

Sorting out beef production data

Cattle producers and market analysts alike are trying to sort out seemingly conflicted data on beef production to understand what to expect in the coming weeks. Year to date cattle slaughter is down 4.8 percent but feedlot marketings this year are down only slightly. Carcass weights are well above year ago levels despite near record feed costs that should minimize the incentives to hold cattle. Moreover, high proportions of current feedlot marketings are feeders placed at light weights which should also imply lighter finishing weights. FULL STORY »

Feed conversions of creep feeds for nursing calves

Feed conversions of calves fed creep feeds have been quite variable to say the least. FULL STORY »

Cow-calf corner: Tips to increase weaning weight Play video

Glenn Selk demonstrates management practices to help increase weaning weight. FULL STORY »

Cow-calf corner: Supplementation programs Play video

Glenn Selk talks about feeding trends with OSU alumni Rick Rasby, who is now an Extension cattle specialist at the University of Nebraska. FULL STORY »

Keep or cull open replacement heifers?? (and buyer beware)

For some Oklahoma cow calf operations, the bulls go into the breeding pasture with replacement heifers in mid-April. FULL STORY »

Cow-calf corner: Preventing calf scours Play video

Cow-Calf Corner is a collection of timely management tips of interest to cow-calf producers in Oklahoma. This week, Glenn Selk explains how to prevent calf scours. FULL STORY »

Using artificial insemination in very warm weather

The high temperature in Altus, Oklahoma on April 1st was 98 degrees F. (No April Fool’s joke intended! It was just 93 degrees in Stillwater.) FULL STORY »

Make a record of twins

Estimates of the percentage of beef cattle births that produce twins vary. One estimate (Gilmore) puts the percentage at about 0.5% or 1 in every 200 births. FULL STORY »

Cow-calf corner: Body condition at calving, rebreeding Play video

Glenn Selk teaches us the importance of maintaining good heifer body condition scores at calving and rebreeding. FULL STORY »

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