Effects of sex, litter size and periconceptional ewe nutrition on the ewe-lamb bond.

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dc.contributor.author Hernandez Verduzco, CE en
dc.contributor.author Matthews, LR en
dc.contributor.author Oliver, Mark en
dc.contributor.author Bloomfield, Francis en
dc.contributor.author Harding, Jane en
dc.date.accessioned 2011-02-03T02:24:48Z en
dc.date.issued 2009 en
dc.identifier.citation APPLIED ANIMAL BEHAVIOUR SCIENCE 120(1-2):76-83 01 Aug 2009 en
dc.identifier.issn 0168-1591 en
dc.identifier.uri http://hdl.handle.net/2292/6248 en
dc.description.abstract Undernutrition restricted to the time around conception in sheep alters endocrine and metabolic responses in the offspring. Studies in rats suggest that such an early insult can also alter the behaviour of the offspring. We studied the effects of mild maternal periconceptional undernutrition (10-15% body weight reduction) on the lamb's response to separation from and reunion with the mother, and on the ewe-lamb bond, evaluated as the preference for each other over an alien ewe/lamb in a test enclosure, at 24 h 1 and 4 weeks of age. Lamb birth weight was not affected by maternal nutrition. Maternal periconceptional undernutrition did not affect the lambs' responses to separation and reunion (number of vocalisations, times to leave pen and achieve proximity with ewes) or the bond between ewes and lambs (percentage of time spent near their own dam/lamb). However, there were effects of sex, litter size and time on lambs' responses to separation and reunion and on the ewe-lamb bond. Female lambs vocalised more during separation (P <= 0.01) and left the holding pen faster than males (P <= 0.05), and twins vocalised more than singletons (P <= 0.05). The time to leave the holding pen, achieve proximity with the ewes and number of vocalisations decreased with increasing postnatal age of the lamb (all P <= 0.001). Ewes showed a stronger preference for the lamb at 24 h and 1 week than at 4 weeks postpartum (P <= 0.001), whereas lambs followed an opposite trend, showing a lower preference for the mother at 24 h and 1 week and increased preference at 4 weeks of age (P <= 0.001). We conclude that periconceptional undernutrition does not affect offspring response to separation from the mother or the bond between ewes and lambs, but that these behaviours are affected by sex and litter size for up to 4 weeks after birth. en
dc.language EN en
dc.relation.ispartofseries Applied Animal Behaviour Science en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0168-1591/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject Sheep en
dc.subject Prenatal undernutrition en
dc.subject Preferential bond en
dc.subject Behaviour en
dc.subject DOMESTIC SHEEP en
dc.subject FEAR REACTIONS en
dc.subject NEWBORN LAMBS en
dc.subject ADULT SHEEP en
dc.subject UNDERNUTRITION en
dc.subject MOTHER en
dc.subject YOUNG en
dc.title Effects of sex, litter size and periconceptional ewe nutrition on the ewe-lamb bond. en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.applanim.2009.04.012 en
pubs.issue 1-2 en
pubs.begin-page 76 en
pubs.volume 120 en
dc.rights.holder Copyright: 2009 Elsevier B.V. en
pubs.end-page 83 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 89001 en
pubs.org-id Liggins Institute en
pubs.org-id LiFePATH en
pubs.record-created-at-source-date 2010-09-01 en

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