Biol Reprod Lalor Postdoctoral Fellowships -- Application Deadline January 15, 2009
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 Email this article to a friend
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 Pitts, G. R.
Right arrow Articles by el Halawani, M. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Pitts, G. R.
Right arrow Articles by el Halawani, M. E.
Agricola
Right arrow Articles by Pitts, G. R.
Right arrow Articles by el Halawani, M. E.

Biology of Reproduction, Vol 50, 1350-1356, Copyright © 1994 by Society for the Study of Reproduction

ARTICLES

Role of vasoactive intestinal peptide in the control of prolactin- induced turkey incubation behavior. II. Chronic infusion of vasoactive intestinal peptide

GR Pitts, OM Youngren, JL Silsby, I Rozenboim, Y Chaiseha, RE Phillips, DN Foster and ME el Halawani
Department of Animal Science, University of Minnesota, St. Paul 55108.

Hyperprolactinemia is associated with incubation behavior in avian species. Increased nesting activity is a major indication of incubation behavior. Vasoactive intestinal peptide (VIP) stimulates prolactin (PRL) secretion from the anterior pituitary. The goal of this study was to induce incubation behavior by stimulating PRL through chronically infusing VIP into the third ventricle of turkey brains. In experiment 1, porcine VIP (pVIP) was infused into the median eminence at a rate of 60 ng/min for 7 days by means of osmotic pumps implanted s.c.. Plasma PRL increased significantly in the pVIP-treated turkeys (p < 0.001). Although egg laying was not affected by the pVIP infusion, the mean oviduct weight decreased (p < 0.057). In experiment 2, saline or pVIP (30 or 60 ng/min) was infused into the third ventricle of laying turkeys for 12 days. Both pVIP treatments increased plasma PRL for 9 days (p < 0.05). The 30-ng pVIP/min infusion decreased nesting activity, plasma LH, ovary and oviduct weight, hypothalamic GnRH I, and anterior pituitary VIP receptors (p < 0.1). However, ovine PRL infusion (20.8 ng/min) into the same turkey flock increased nesting activity (p < 0.01). In conclusion, pVIP does not induce incubation behavior in laying turkeys.


This article has been cited by other articles:


Home page
 Biol. Reprod.Home page
Y. Chaiseha, O. M. Youngren, and M. E. El Halawani
Expression of Vasoactive Intestinal Peptide Receptor Messenger RNA in the Hypothalamus and Pituitary Throughout the Turkey Reproductive Cycle
Biol Reprod, March 1, 2004; 70(3): 593 - 599.
[Abstract] [Full Text] [PDF]

Home page
 Biol. Reprod.Home page
Y. Chaiseha, O. M. Youngren, and M. E. El Halawani
Vasoactive Intestinal Peptide Secretion by Turkey Hypothalamic Explants
Biol Reprod, July 1, 1998; 59(3): 670 - 675.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1994 by the Society for the Study of Reproduction.