Effects of oestrogen supplementation and space restriction on PGF(2 alpha)-induced nest-building in pseudopregnant gilts

Burne, THJ, Murfitt, PJE, Goode, JA, Boulton, MI and Gilbert, CL (1999) Effects of oestrogen supplementation and space restriction on PGF(2 alpha)-induced nest-building in pseudopregnant gilts. Animal Reproduction Science, 55 3-4: 255-267. doi:10.1016/S0378-4320(99)00007-X


Author Burne, THJ
Murfitt, PJE
Goode, JA
Boulton, MI
Gilbert, CL
Title Effects of oestrogen supplementation and space restriction on PGF(2 alpha)-induced nest-building in pseudopregnant gilts
Journal name Animal Reproduction Science   Check publisher's open access policy
ISSN 0378-4320
Publication date 1999-04-01
Year available 1999
Sub-type Article (original research)
DOI 10.1016/S0378-4320(99)00007-X
Open Access Status Not yet assessed
Volume 55
Issue 3-4
Start page 255
End page 267
Total pages 13
Place of publication AMSTERDAM
Publisher ELSEVIER SCIENCE BV
Language eng
Abstract This study examined the role of oestrogen supplementation on PGF(2 alpha)-induced nest-building in pseudopregnant gilts. Oestradiol valerate (5 mg/day) injections were given on Days 11-15 of the oestrous cycle to induce pseudopregnancy. A further series of injections of either oestradiol valerate (5 mg/day) or vehicle were given on days 44-46 of pseudopregnancy to reflect more closely the hormone profile seen in pregnancy. Nest-building was induced by a single intramuscular injection of 15 mg of PGF(2 alpha) (Lutalyse) on Day 47 of pseudopregnancy. The gilts were housed in pens (2.8 X 1.7 m) containing straw in experiment I or chronically confined in crates (0.6 X 1.7 m) that did not contain straw on days 44-48 of pseudopregnancy for experiment 2,. Oestrogen supplemented gilts had significantly higher concentrations of circulating 17 beta-oestradiol on day 47 of pseudopregnancy but there were no significant differences between treatments for circulating levels of prolactin, progesterone, cortisol or oxytocin, or for any behavioural measure in either experiment. These results indicate that there is no direct effect of supplementing already pseudopregnant gilts with oestradiol valerate on PGF(2 alpha)-induced nest-building. The results also show that the pre-partum environment has a pronounced effect on nest-building behaviours and that non-pregnant pigs might be a useful model for pre-partum nest-building in this species. (C) 1999 Elsevier Science B.V. All rights reserved.
Keyword pig-endocrinology
prostaglandin
oestrogen
stress
environment
behaviour
Ranging Domestic Pigs
Prepartum Behavior
Farrowing Behavior
Parturient Sows
Prolactin
Progesterone
Prostaglandin-F2-Alpha
Estrogen
Cortisol
Secretion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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