CGSpaceA Repository of Agricultural Research Outputs
    View Item 
    •   CGSpace Home
    • International Livestock Research Institute (ILRI)
    • ILRI archive
    • View Item
       
    • CGSpace Home
    • International Livestock Research Institute (ILRI)
    • ILRI archive
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Effects of trypanosomiasis on growth and mortality of young East African Zebu cattle exposed to drug-resistant trypanosomes

    Thumbnail
    Authors
    Rowlands, G.J.
    Mulatu, W.
    Authié, E.
    D'Ieteren, G.D.M.
    Leak, S.G.A.
    Nagda, S.M.
    Date
    1994
    Language
    en
    Type
    Journal Article
    Accessibility
    Limited Access
    Metadata
    Show full item record
    Share
    
    Citation
    Preventive Veterinary Medicine;21(1): 87-101
    Permanent link to cite or share this item: https://hdl.handle.net/10568/29506
    DOI: https://doi.org/10.1016/0167-5877(94)90034-5
    Abstract/Description
    Approximately 390 East African Zebu calves from birth to 3 years of age and their dams were monitored monthly from 1986 to 1992 in nine village herds in an area of high trypanosomiasis risk in southwest Ethiopia where there was resistance to all available trypanocidal drugs. Cattle were individually treated with diminazene aceturate when they were detected to be parasitaemic and their packed red cell volume decreased below 26 percent, or when they showed clinical signs of trypanosomiasis. The average monthly trypanosome prevalence among cattle between 6 and 36 months of age was 18 percent. Within this environment, animals achieved averaged body weights of 79+14 (SD) kg, 134+21 kg and 183+22 kg at 12, 24 and 356 months of age respectively. Annual mortalities ranged from 8 to 24 percent, from 6 to 15 percent and from 4 to 16 percent in the age ranges 0-12, 13-14 and 25-36 months respectively. Calves parasitaemic in any one month in 1988, when early rains failed, had a higher average mortality in that month (3.1 percent) than those that were aparasitaemic (1.4 percent). Liveweight gains of calves born to the dams detected as parasitaemic on more than half the occasions during the first 6 months postpartum were 14 percent lower than those of calves from dams not detected as parasitaemic over this period. An effect of parasitaemia in the calf on weight gain to 12 months could not be demonstrated, but animals detected as parasitaemic on more than six of the 12 monthly samples between 13 and 24 or 245 and 36 months of age had growth rates on average 22 percent lower than those of animals not detected as parasitaemic. All these effects of trypanosomiasis on productivity, however, were temporary and animals later compensated for periods of poor growth. Regualr trypanocidal chemotherapy in a situation of high levels of drug resistance may have helped to maintain the health and productivity of these young cattle.
    AGROVOC Keywords
    zebu cattle; trypanosomiasis; mortality; growth; drug; east african zebu
    Subjects
    CATTLE; DAIRYING; ANIMAL PRODUCTS;
    Countries
    Ethiopia
    Regions
    Africa; Eastern Africa
    Collections
    • ILRI archive [4978]
    • ILRI articles in journals [5969]

    Show Statistical Information


    AboutPrivacy StatementSend Feedback
     

    My Account

    LoginRegister

    Browse

    All of CGSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesBy AGROVOC keywordBy ILRI subjectBy CCAFS subjectBy RegionBy CountryBy SubregionBy CRP subjectBy River basinBy Output typeBy Bioversity subjectBy CIAT subjectBy CIP subjectBy CGIAR System subjectBy Alliance Bioversity–CIAT subjectThis CollectionBy Issue DateAuthorsTitlesBy AGROVOC keywordBy ILRI subjectBy CCAFS subjectBy RegionBy CountryBy SubregionBy CRP subjectBy River basinBy Output typeBy Bioversity subjectBy CIAT subjectBy CIP subjectBy CGIAR System subjectBy Alliance Bioversity–CIAT subject

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    AboutPrivacy StatementSend Feedback