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


     

Journal of Dairy Science Vol. 76 No. 6 1544-1549
© 1993 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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ballou, L. U.
Right arrow Articles by Bremel, R. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ballou, L. U.
Right arrow Articles by Bremel, R. D.

The Effects of Daily Oxytocin Injections Before and After Milking on Milk Production, Milk Plasmin, and Milk Composition

Linda U. Ballou 1, Jeffrey L. Bleck 1, Gregory T. Bleck 1, and Robert D. Bremel 1

1 Department of Dairy Science, University of Wisconsin-Madison, Madison 53706

Exogenous daily oxytocin injections given immediately before milking increase milk production. To investigate the mechanism by which oxytocin increases milk production, oxytocin injections were given before and after milking, and saline injection was given before milking as a control. The experimental design was a replicated Latin square; two complete trials were performed: one with 12 cows (45 d) and another with 15 cows (95 d). In the first trial, the least squares means of milk production were 29.2, 29.3, and 28.3 kg for oxytocin injection before milking, oxytocin injection after milking, and saline injection before milking, respectively. In the second trial, the least squares means of milk production were 33.3, 32.9, and 32.4 kg for oxytocin injection before milking, oxytocin injection after milking, and saline injection before milking, respectively. Oxytocin before and after milking significantly increased milk production by 3%. The results suggest that increases in milk production may not be caused by removal of residual milk but by increased gland output of milk. The effect on milk plasmin activity, fat, protein, SCC, and lactose was nonsignificant and may indicate that effect of oxytocin is not manifested through an effect on cell remodeling.

Key Words: oxytocin • milk plasmin • milk production

Submitted on September 23, 1992
Accepted on February 16, 1993




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
A. Bach, N. Valls, A. Solans, and T. Torrent
Associations Between Nondietary Factors and Dairy Herd Performance
J Dairy Sci, August 1, 2008; 91(8): 3259 - 3267.
[Abstract] [Full Text] [PDF]

Home page
 J. Physiol.Home page
V. Lollivier, P.-G. Marnet, S. Delpal, D. Rainteau, C. Achard, A. Rabot, and M. Ollivier-Bousquet
Oxytocin stimulates secretory processes in lactating rabbit mammary epithelial cells
J. Physiol., January 1, 2006; 570(1): 125 - 140.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
J. Macuhova, V. Tancin, and R. M. Bruckmaier
Effects of Oxytocin Administration on Oxytocin Release and Milk Ejection
J Dairy Sci, May 1, 2004; 87(5): 1236 - 1244.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
B. C. McKusick, D. L. Thomas, J. E. Romero, and P. G. Marnet
Effect of Weaning System on Milk Composition and Distribution of Milk Fat within the Udder of East Friesian Dairy Ewes
J Dairy Sci, October 1, 2002; 85(10): 2521 - 2528.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1993 by the American Dairy Science Association ®.