Mark Z. Johnson

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Every 21 days a cow stays open costs you roughly 40 lb. of weaning weight. Ensure your bull-to-female ratios are optimized to maximize early conception and your bottom line.
Oklahoma State’s Mark Johnson shares research determining the average gestation for Bos Taurus beef cows.
Oklahoma State’s Mark Johnson breaks down the value of a bull in today’s market.
Identifying breeding goals as well as prudent selection and mating decisions can result in a cow herd that yields more beef per acre of pasture, reduces your maintenance cost and serves as the production factory of market topping calves.
In regard to building back a better cow herd through sound, intentional selection and mating decisions, the single strongest argument for crossbreeding is the advantage in reproductive fitness and longevity of crossbred cows.
Oklahoma State’s Mark Johnson explains hybrid vigor is the result of GCV.
Oklahoma State’s Mark Johnson explains replacement heifer selection strategies based on genetic potential.
Oklahoma State’s Mark Johnson shares four tips for building better genotypes when selecting replacement heifers.
Oklahoma State’s Mark Johnson explains the importance of understanding your production system when making breeding and selection decisions.
Oklahoma State’s Mark Johnson shares how selection decisions impact cow herd productivity and profit.