JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 50 No. 11 1846-1847
© 1967 by American Dairy Science Association ®
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 Saiduddin, S.
Right arrow Articles by Casida, L. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Saiduddin, S.
Right arrow Articles by Casida, L. E.

Some Carry-over Effects of Pregnancy on Post-partum Ovarian Function in the Cow1

Syed Saiduddin, J. W. Riesen, W. J. Tyler and L. E. Casida

Laboratory of Genetics and Department of Dairy Science, University of Wisconsin, Madison

ABSTRACT

Two hundred and six calving intervals of 136 Holstein cows were studied to determine a possible influence of the corpus luteum (C.L.) or the uterine horn of previous pregnancy on the site of the first ovulation following parturition. The frequency with which the C.L. of first ovulation, post-partum, occurred in the same ovary that carried the C.L. of pregnancy was significantly less (P < .005) than the expected frequency based on the total number of ovulations in the right and left ovaries. Also, the frequency of new C.L. found in the same ovary that carried the C.L. of pregnancy was lower than the expected frequency during the first 20 days post-partum, but increased at later intervals (P < .005).

FOOTNOTES

1 From the Laboratory of Genetics (Paper no. 1141) and the Department of Dairy Science; published with the approval of the director of the Agricultural Experiment Station. This study was supported in part by grants from the Dairy Cattle Research Branch, USDA, the Emmons Blaine, Jr. fund, and the Ford Foundation. Contribution from the Wisconsin Agricultural Experiment Station as a collaborator under the North Central Region Cooperative Research Project entitled Improvement of Dairy Cattle Through Breeding -NC-2, conducted in cooperation with the Dairy Cattle Research Branch, USDA.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1967 by the American Dairy Science Association ®.