Show simple item record

dc.contributorAlkhtib, Ashrafen_US
dc.creatorWamatu, Janeen_US
dc.identifier.citationJane Wamatu, Ashraf Alkhtib. (22/3/2021). Feasibility of heart girth models in estimating live weight of fat-long-tailed sheep. Veterinary Medicine and Science.en_US
dc.description.abstractFat deposition in the brisket of Ethiopian fat-long-tailed sheep may interfere with the correlation between heart girth (HG) and live weight (LW), bringing into question the accuracy of HG models for LW prediction that are currently in use. This study assessed the accuracy of published HG-based prediction models of the live weight of Ethiopian sheep breeds. Furthermore, the study identified accurate and robust models that predict the LW of the sheep using HG. Live weight and HG of 1,020 sheep from Bonga, Adilo and Horro breeds were measured. First, data collected from the study was used to gauge the preciseness of previously published prediction models of each breed. Second, the data of individual breeds were divided into a calibration set for model construction and a validation set for model validation. Live weight was regressed on HG to construct simple linear, Box-Cox, quadratic and allometric prediction models. Prediction error of published models was >20%. Models constructed for each breed did not differ in R-2. However, only simple linear models with transformed LW (Adilo: Log(10)(LW) = 0.408 + 0.015*HG, Bonga: Log(10)(LW) = -36.6 + 0.882*HG, Horro: LW0.5 = -1.26 + 0.085*HG) had homogenous residuals and prediction error of <= 10%. Heart girth models currently used to predict LW of Adilo, Bonga and Horro sheep of Ethiopia are not sufficiently accurate as they have PE higher than 10%. Prediction models generated by the current study could replace the published models for an accurate estimation of LW of the three breeds for husbandry, marketing and veterinary purposes.en_US
dc.publisherWiley Open Accessen_US
dc.sourceVeterinary Medicine and Science;(2021)en_US
dc.subjectheart girthen_US
dc.subjectprediction erroren_US
dc.titleFeasibility of heart girth models in estimating live weight of fat-long-tailed sheepen_US
dc.typeJournal Articleen_US
cg.creator.idWamatu, Jane: 0000-0003-3544-6718en_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerNottingham Trent University, School of Animal, Rural and Environmental Sciences - NTU - School of Animalen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.funderEast Delta Rural Development Projecten_US
cg.contributor.projectCGIAR Research Program on Livestock Agri-Food Systemsen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionEastern Africaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusOpen accessen_US
cg.journalVeterinary Medicine and Scienceen_US

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

DSpace software copyright © 2002-2016  DuraSpace
MELSpace content providers and partners accept no liability to any consequence resulting from use of the content or data made available in this repository. Users of this content assume full responsibility for compliance with all relevant national or international regulations and legislation.
Theme by 
Atmire NV