J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Price, E. O.
Right arrow Articles by Wallach, S. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Price, E. O.
Right arrow Articles by Wallach, S. J.

Journal of Animal Science, Vol 69, Issue 3 1028-1033, Copyright © 1991 by American Society of Animal Science

JOURNAL ARTICLE

Sexual and aggressive behaviors of Hereford bulls: interrelationship of variables and problems with the use of composite scores to describe overall sexual performance

E. O. Price and S. J. Wallach
Dept. of Anim. Sci., University of California, Davis 95616.

The purpose of this investigation was to determine the interrelationships of the various sexual and aggressive behaviors exhibited by Hereford bulls in sexual performance (serving capacity) tests and to determine the extent to which these interrelationships change with age (maturity). Correlation matrices were constructed for the frequencies of sexual and aggressive behaviors exhibited by two groups of 13 and 14 bulls, respectively, during 120-min tests with females when the bulls were 12, 18, and 24 mo of age. The frequencies of selected sexual behaviors recorded during individual tests at 18, 21, and 24 mo were factor-analyzed using a principle components analysis. Also, a comparison was made of the length of the refractory periods following various sexual behaviors at 12 and 24 mo of age. Bulls varied greatly in the way they responded to sexual stimuli. Few sexual behaviors were intercorrelated and the factor analysis of selected sexual behaviors was inconclusive. Frequencies of aggressive behaviors were more highly correlated. Age (maturation) did not affect the interrelationship of the sexual behaviors recorded. Aggressive behavior variables were more highly correlated at 12 mo than at 18 or 24 mo of age. The average length of the refractory period following ejaculation was longer (112 s; P less than .05) than the refractory period following mounts without ejaculation (50 s), and the latter had a longer (P less than .05) refractory period than mount attempts, mount intentions and head throws (26 to 38 s).(ABSTRACT TRUNCATED AT 250 WORDS)




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by the American Society of Animal Science.