Growth and Body Composition of Artificially-Reared Lambs Exposed to Three Different Rearing Regimens.

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dc.citation.issue12
dc.citation.volume11
dc.contributor.authorHerath HMGP
dc.contributor.authorPain SJ
dc.contributor.authorKenyon PR
dc.contributor.authorBlair HT
dc.contributor.authorMorel PCH
dc.coverage.spatialSwitzerland
dc.date.available2021-11-24
dc.date.available2021-11-21
dc.date.issued24/11/2021
dc.description(c) The Author/s
dc.description.abstractThis study was designed to investigate the influence of pellet fibre level, milk replacer composition and age at weaning on growth and body composition of lambs reared artificially. Romney ram lambs were randomly allocated to one of three rearing treatments; HFP57: commercial milk replacer to 57 days of age, and high fibre concentrate pellets; HFP42: commercial milk replacer with early weaning at 42 days of age, and high fibre concentrate pellets; LFP42: high protein milk replacer from 2-16 days of age followed by commercial milk replacer with early weaning at 42 days of age, and low fibre concentrate pellets. Lambs were slaughtered at 57 days of age. Overall average daily liveweight gain of lambs did not differ (p > 0.05) between treatments. Dressing out percentage, carcass weight, empty small intestine and omental fat were higher (p < 0.05) in HFP57 than in both HFP42 and LFP42 lambs. HFP42 and LFP42 lambs had heavier (p < 0.05) empty rumen weights. Whole body protein content was higher (p < 0.05) in HFP42 lambs compared to both HFP57 and LFP42 lambs. Fat content and daily fat deposition were greater (p < 0.05) in HFP57 lambs than HFP42 and LFP42 lambs. Weaning lambs at 42 days of age with provision of either low or high fibre concentrate pellets, resulted in similar growth rates, reduced whole body fat deposition and was a more cost-effective rearing regimen.
dc.description.publication-statusPublished online
dc.identifierhttps://www.ncbi.nlm.nih.gov/pubmed/34944147
dc.identifierani11123370
dc.identifier.citationAnimals (Basel), 2021, 11 (12)
dc.identifier.doi10.3390/ani11123370
dc.identifier.elements-id449834
dc.identifier.harvestedMassey_Dark
dc.identifier.issn2076-2615
dc.identifier.urihttps://hdl.handle.net/10179/17809
dc.languageeng
dc.relation.isPartOfAnimals (Basel)
dc.subjectcarcass and viscera composition
dc.subjectcommercial milk replacer
dc.subjectcost analysis
dc.subjectearly weaning
dc.subjectfat deposition
dc.subjectneutral detergent fibre
dc.subjectpellet fibre level
dc.subjectstomach components
dc.subject.anzsrc0502 Environmental Science and Management
dc.subject.anzsrc0608 Zoology
dc.subject.anzsrc0702 Animal Production
dc.titleGrowth and Body Composition of Artificially-Reared Lambs Exposed to Three Different Rearing Regimens.
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment
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