---
abstract: 'Prior parturitional experience and genotype have previously been found to affect the proportion of nonpregnant female rats and mice that will eat foster placenta. The present series of experiments was designed to investigate the influence of estrous cycle stage on placentophagia in rats. Foster placenta was presented to nonpregnant Long-Evans females, purchased from a commercial breeder, for 15 min on 5 consecutive days. We found that virgin placentophages were most likely to have eaten placenta on the first presentation, unless the first presentation occurred during proestrus. In fact, virgins would not eat placenta for the first time during proestrus, regardless of test-day. However, once they had eaten placenta, either in a nonproestrus stage, or, in the case of primiparae, during parturition, they would eat placenta during proestrus. Long-Evans rats born in our laboratory differed from the purchased rats, manifesting an incidence of placentophagia that was too low to be analyzed by stage of the estrous cycle; when tested as primiparae, however, there were no differences between the two groups.'
altloc: []
chapter: ~
commentary: ~
commref: ~
confdates: ~
conference: ~
confloc: ~
contact_email: ~
creators_id:
  - kristal@buffalo.edu
  - ~
creators_name:
  - family: Kristal
    given: Mark B.
    honourific: Dr.
    lineage: ''
  - family: Graber
    given: Gary C.
    honourific: ''
    lineage: ''
date: 1976
date_type: published
datestamp: 2008-10-16 13:49:54
department: ~
dir: disk0/00/00/62/19
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editors_id: []
editors_name: []
eprint_status: archive
eprintid: 6219
fileinfo: /style/images/fileicons/application_pdf.png;/6219/1/estrous.pdf
full_text_status: public
importid: ~
institution: ~
isbn: ~
ispublished: pub
issn: ~
item_issues_comment: []
item_issues_count: 0
item_issues_description: []
item_issues_id: []
item_issues_reported_by: []
item_issues_resolved_by: []
item_issues_status: []
item_issues_timestamp: []
item_issues_type: []
keywords: 'placentophagia, estrous cycle, birthplace, parturitional experience, maternal behavior, rats'
lastmod: 2011-03-11 08:57:12
latitude: ~
longitude: ~
metadata_visibility: show
note: ~
number: 4
pagerange: 599-605
pubdom: TRUE
publication: Physiology & Behavior
publisher: Pergamin Press and Brain Research Publ.
refereed: TRUE
referencetext: ~
relation_type: []
relation_uri: []
reportno: ~
rev_number: 25
series: ~
source: ~
status_changed: 2008-10-16 13:49:54
subjects:
  - bio-behav
  - psy-bio
  - comp-psy
  - bio-ani-behav
succeeds: ~
suggestions: ~
sword_depositor: ~
sword_slug: ~
thesistype: ~
title: "Placentophagia in Nonpregnant Rats:\r\nInfluence of Estrous Cycle Stage and Birthplace"
type: journalp
userid: 88
volume: 17
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