Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands

Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands

M. Tibbo and A. Haile are ILRI authors

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Main Authors: Tibbo, Markos, Aragaw, K., Teferi, M., Haile, Aynalem
Format: Journal Article biblioteca
Language:English
Published: Elsevier 2010-05
Online Access:https://hdl.handle.net/10568/650
https://doi.org/10.1016/j.smallrumres.2010.01.002
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spelling dig-cgspace-10568-6502023-12-08T19:36:04Z Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands Tibbo, Markos Aragaw, K. Teferi, M. Haile, Aynalem M. Tibbo and A. Haile are ILRI authors A 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. 2010-05 2010-02-12T05:56:17Z 2010-02-12T05:56:17Z Journal Article Tibbo, M.; Aragaw, K.; Teferi, M.; Haile, A. 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(103): 58-63 0921-4488 https://hdl.handle.net/10568/650 https://doi.org/10.1016/j.smallrumres.2010.01.002 en Copyrighted; all rights reserved Limited Access p. 58-63 Elsevier Small Ruminant Research
institution CGIAR
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country Francia
countrycode FR
component Bibliográfico
access En linea
databasecode dig-cgspace
tag biblioteca
region Europa del Oeste
libraryname Biblioteca del CGIAR
language English
description M. Tibbo and A. Haile are ILRI authors
format Journal Article
author Tibbo, Markos
Aragaw, K.
Teferi, M.
Haile, Aynalem
spellingShingle Tibbo, Markos
Aragaw, K.
Teferi, M.
Haile, Aynalem
Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands
author_facet Tibbo, Markos
Aragaw, K.
Teferi, M.
Haile, Aynalem
author_sort Tibbo, Markos
title Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands
title_short Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands
title_full Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands
title_fullStr Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands
title_full_unstemmed Effect of strategic helminthosis control on mortality of communally grazed Menz lambs of smallholders in the cool central Ethiopian highlands
title_sort effect of strategic helminthosis control on mortality of communally grazed menz lambs of smallholders in the cool central ethiopian highlands
publisher Elsevier
publishDate 2010-05
url https://hdl.handle.net/10568/650
https://doi.org/10.1016/j.smallrumres.2010.01.002
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AT teferim effectofstrategichelminthosiscontrolonmortalityofcommunallygrazedmenzlambsofsmallholdersinthecoolcentralethiopianhighlands
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