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Publications by R. K. Johnson

Relationship of Various Measures of Performance With Ovulation Rate and Number of Embryos 30 Days After Breeding in Gilts

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1974English

Effects of Selection of Data on Estimates of Breeding Values by Three Methods for Litter Size, Backfat, and Average Daily Gain in Swine.

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1991English

Comparisons of Mating Systems With Duroc, Hampshire and Yorkshire Breeds of Swine for Efficiency of Swine Production

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1981English

Inheritance of Teat Number and Its Relationship to Maternal Traits in Swine

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1980English

Growth of Testes and Testicular Morphology After Eight Generations of Selection for Increased Predicted Weight of Testes at 150 Days of Age in Boars.

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1995English

Simulation of Breed and Crossbreeding Effects on Costs of Pork Production

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1983English

Genetic and Phenotypic Parameters Estimated From Nebraska Specific-Pathogen-Free Swine Field Records

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1983English

Comparison of Methods of Predicting Breeding Values of Swine

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1988English

Reciprocal Recurrent Selection for 21-Day Litter Weight of Crossbred Gilts. I. Selection Applied and Genetic Change in Reproduction of Crossbred Gilts

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1983English

An Analysis of the Dependency Structure Between a Gilt's Prebreeding and Reproductive Traits. I. Phenotypic and Genetic Correlations

Journal of Animal Science
Animal ScienceZoologyGeneticsMedicineFood Science
1977English

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