Cookies Policy
X
Cookie Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Recognition of Dizygotic and Monozygotic Twin Lambs By Ewes

MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Buy this article

Price:
$30.00+ Tax (if applicable)
Add to Favorites

image of Behaviour

To assess the underlying bases of the phenotypic traits by which lambs are recognized, ewes' responses to both dizygotic and monozygotic twins were observed. When tested several hours post-partum, ewes discriminated between their familiar lamb and its same-sex dizygotic twin that had been isolated at birth. The latter twins were nonetheless treated more positively than were unfamiliar alien lambs. A similar pattern of results was obtained for ewes tested with familiar and isolated monozygotic twins, and an unfamiliar alien lamb. To assess the possible influence of the differential pre-test treatments of familiar and isolated twins and the role of maternal chemical labels in offspring discrimination, the above experiments were replicated with the familiar lamb confined to a mesh cage that prevented maternal licking and nursing. Although isolated dizygotic twins were accepted to a lesser extent than their caged familiar twins, levels of maternal acceptance/rejection did not differ between the isolated twins and unfamiliar alien lambs. In contrast, isolated monozygotic twins were not treated differently than their caged familiar twins, but they were nonetheless distinguished from unfamiliar alien young. These latter data tentatively suggest that ewes may have discerned a greater resemblance between familiar and isolated MZ twins than between DZ twins of these two categories. It therefore appears that lambs' individually distinctive signatures reflect an interaction between genetically influenced processes and non-genetic factors (e.g. environmental or metabolic).

Affiliations: 1: (Laboratoire de Comportement Animal, URA CNRS 1291, INRA, 37380 Nouzilly, France

Sign-in

Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Create email alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Name:*
    Email:*
    Your details
    Name:*
    Email:*
    Department:*
    Why are you recommending this title?
    Select reason:
     
     
     
     
    Other:
     
    Behaviour — Recommend this title to your library

    Thank you

    Your recommendation has been sent to your librarian.

  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation