Document Type

Thesis - Open Access

Award Date

1959

Degree Name

Master of Science (MS)

Department

Animal Science

Abstract

The objectives of the experiments presented is to study the effects of different concentrations of selenium on reproductive performance. This was necessary in order to determine what concentrations of selenium should be used in subsequent experiments. To determine if natural variation is hereditary and if it can be utilized in breeding for resistance. The relationship of race differences and resistance. There are indications of variation in resistance between different breeds of swine and cattle. The relationship of sex to resistance. There are indications that a sex difference may exist in beef cattle since in some herds bulls are affected more severely than cows. To obtain estimates of heritability of resistance. The knowledge of heritability is of fundamental importance in utilizing the results of the above experiments in recommending the most effective breeding program.

Library of Congress Subject Headings

Selenium

Description

Includes bibliographical references

Format

application/pdf

Number of Pages

129

Publisher

South Dakota State College of Agriculture and Mechanic Arts

Rights

No Copyright - Non-Commercial Use Only
http://rightsstatements.org/vocab/NoC-NC/1.0/

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