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dc.contributorAragaw, Kassayeen_US
dc.contributorTeferi, Men_US
dc.contributorHaile, Aynalemen_US
dc.creatorTibbo, Markosen_US
dc.identifier.citationMarkos Tibbo, Kassaye Aragaw, M Teferi, Aynalem Haile. (1/5/2010). Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands. Small Ruminant Research, 90 (1-3), pp. 58-63.en_US
dc.description.abstractA 3-year longitudinal study was conducted to evaluate the effects of strategic anthelmintic dosing on communally grazed village sheep in Gera Keya district in the central highlands of Ethiopia. Ewes were stratified by weight and randomly allocated to three treatment groups: untreated control (TG1), twice-dosed per year (TG2; for both nematodes and trematodes in mid-January and mid-June) and four-time-dosed per year (TG3; in June for nematodes, in August-September for nematodes and adult Fasciola, in November-December and January-February for immature liver flukes). The fixed effect of treatment, lamb sex, dam parity, season and year of birth on mortality from birth to 90, 180, 270 and 365 days was analyzed. Least square means of lamb mortality from birth to 90, 180,270 and 365 days were 11.3, 16.8, 18.0 and 19.5%, respectively. Anthelmintic treatment had significant effect (P < 0.05) on mortality of lambs at all ages: lambs in TG3 had consistently higher mortality than lambs in TG2. The lambs in TG3 were worse in terms of survival from birth to 180 days even when compared with the control group (TG1). Mortality rate in male lambs was twice as high compared to their female contemporaries at all ages (P < 0.001). Season of birth had significant (P < 0.01) effect on lamb mortality at all ages. Lambs born during rainy season had the lowest mortality in the first 6 months (0-90 and 0-180 days) of age than those born during short rainy or dry seasons. Instead of frequent mass drenching, discriminatory drenching on a case-by-case basis should be considered to improve lamb survival. (C) 2010 Elsevier B.V. All rights reserved.en_US
dc.publisherElsevier (12 months)en_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceSmall Ruminant Research;90,(2010) Pagination 58,63en_US
dc.subjectethiopia; menz lambs; mortality; risk factors; strategic de-wormingen_US
dc.titleEffect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlandsen_US
dc.typeJournal Articleen_US
cg.creator.idHaile, Aynalem: 0000-0001-5914-0487en_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInternational Livestock Research Institute - ILRIen_US
cg.contributor.centerHawassa University - HU, Ethiopiaen_US
cg.contributor.centerAmhara Regional Agricultural Research Institute, Debre Birhan Agricultural Research Center - ARARI-DBARCen_US
cg.contributor.funderAmhara Regional Agricultural Research Institute - ARARIen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
dc.identifier.statusTimeless limited accessen_US

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