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Trypanotolerance and phenotypic characteristics of four Ethiopian cattle breeds

Stein, Jennie (2011). Trypanotolerance and phenotypic characteristics of four Ethiopian cattle breeds. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2011:29
ISBN 978-91-576-7564-4
[Doctoral thesis]

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Abstract

Trypanosomosis is the single most important livestock disease in sub-Saharan Africa. Infected animals suffer from weight loss, anemia and miscarriages. Trypanotolerant breeds, however, can survive, produce and reproduce even under disease pressure. In Ethiopia some breeds live in infected areas and could possess trypanotolerance. The aim of this study was to compare the four Ethiopian cattle breeds Abigar, Gurage, Horro and Sheko in aspects related to trypanotolerance. These breeds are all kept in different tsetse infested parts of South-Western Ethiopia.

To learn about constraints for livestock production and about cattle diseases in particular, a survey was carried out among livestock keepers in the areas where the breeds are normally kept. Trypanosomosis was considered the most important disease in all areas. Sheko and Abigar had the best milk production according to the livestock keepers. The reproductive performance was the least favorable for Gurage. Blood samples were collected during the peak trypanosomosis challenge period of the year, to determine parasitaemia and Packed red Cell Volume (PCV) as indicators of trypanosomosis. Sheko cattle were least infected by trypanosomes (6%), compared to the other breeds (17-23%). Horro and Sheko had the best PCV. The number of trypanocidal treatments varied greatly, where Sheko had the fewest and Gurage the most (1 vs. 24 treatments per animal and year). The four breeds were also compared at a field experimental station in a tsetse infested area (Ghibe valley), where a total of 375 animals were kept. Abigar and Gurage showed poor reproductive characteristics compared to Horro and Sheko. The survival rates were best in Horro and Sheko. Sheko and Abigar had the highest PCV. Sheko had the fewest average number of trypanocidal treatments and the lowest infection rate, 9% compared to 21-26% for the other breeds.

Sheko cattle stand out as the most trypanotolerant animals; they rarely get infected by trypanosomes, and have good PCV, production and reproduction. A broader use of the Sheko breed in tsetse infested areas could improve animal health and household welfare. Immediate actions are needed to avoid extinction of this valuable breed.

Authors/Creators:Stein, Jennie
Title:Trypanotolerance and phenotypic characteristics of four Ethiopian cattle breeds
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2011
Volume:2011:29
Number of Pages:63
Papers/manuscripts:
NumberReferences
I.Stein, J., Ayalew, W., Rege, J.E.O., Mulatu, W., Malmfors, B., Dessie, T., Philipsson, J. (2009). Livestock keeper perception of four indigenous cattle breeds in tsetse infested areas of Ethiopia. Tropical Animal Health and Production 41(7), 1335-1346.
II.Stein, J., Ayalew, W., Rege, J.E.O., Mulatu, W., Lemecha, H., Tadesse, Y., Tekle, T., Philipsson, J. (2011). Trypanosomosis and phenotypic features of four indigenous cattle breeds in an Ethiopian field survey. Veterinary Parasitology. In Press. doi: 10.1016/j.vetpar.2010.12.025
III.Stein, J., Mulatu, W., Ayalew, W., Lemecha, H., Malmfors, B., Dessie, T., Rege, J.E.O., Philipsson, J. Production, reproduction and trypanotolerance in four Ethiopian cattle breeds kept on station in a tsetse infested area. Manuscript.
Place of Publication:Uppsala
Publisher:Institutionen för husdjursgenetik, Sveriges lantbruksuniversitet
ISBN for printed version:978-91-576-7564-4
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L01 Animal husbandry
L Animal production > L10 Animal genetics and breeding
L Animal production > L73 Animal diseases
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:cattle, breeds (animals), land races, genetic variation, phenotypes, trypanosomiasis, animal diseases, disease resistance, ethiopia
Keywords:Cattle, Ethiopia, Trypanosomosis, Trypanotolerance, Phenotypic characteristics
URN:NBN:urn:nbn:se:slu:epsilon-e-96
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-96
ID Code:8124
Department:(VH) > Dept. of Animal Breeding and Genetics
External funders:Swedish International Development Cooperation Agency
Deposited By: Jennie Stein
Deposited On:12 May 2011 11:14
Metadata Last Modified:02 Dec 2014 10:46

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