Browsing by Author "Asmare, Kassahun"

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Epidemioloy of Brucellosis in Cattle and its Sero Prevalence in Animal Health professional in Sidama Zone, Southern Ethiopia
    (Addis Ababa University Faculty Of Veterinary Medicine, 2004-06) Asmare, Kassahun; Prasad, Dr Shiv
    ABSTRACT Brucellosis is a widespread infectious disease of livestock and wild life with serious economic and public health impact. Bovine brucellosis causes diminution of much needed human food (milk and meat). Besides, being transmitted to man, it is one of the most important causes of abonion, stillb irth and infertility in cattle. The objectives of this study were, to investigate th e current epidemiological picture of brucellosis in cattle in intensive and extensive management systems, identify and describe some of the associated intrinsic and extrinsic risk factors and to see the zoonotic imporlance of the disease. The study was conducted from September 2003 to April 2004, in Sidama Zone (Southern ;ations Nationalities Peoples Regional state). In the study area, six out of ten Waredas were considered for the investigation. Breeding cattle (n=2438 ) above six months of age were drawn in from both management systems with no history of vaccination. To this effect, a total of811 Frisian and their CTOsses from intensive and 1627 indigenous zebu from extensive management system were considered . Furthennore 38 individuals thought to be at risk due 10 their occupational nature, with particular emphasis given to Veterinarians, Animal health Assistants. Animal Health Technicians, Anificial Insemination Technicians and Meat Inspectors were made part of the study. Serum samples collected from both animals and humans were screened using Rose Bengal Plate Test (RBPT). Positive reactors were further subjected to Complement Fixation Test to maximize specifiry and positive predictive value. In this study, an over all prevalence of 2.46% in intensive and 1.66% in extensive management systems has been established .. Among the risk factors investigated (Age, sex, herd size and management). only age was found to be associated with the infection (P<0.05). Orthe total herds in vestigated , 9. 22 % (n=347) of them were confimled to consist at least one infected animal. The herd level infection rates were 6. 72 % (n=223) and 13.70 % (11=124) for intensive and extensive management, respecti vely. Infected herds have been detected from all Woredas except Arroresa. Accordingly, the rate of seroreactor herds observed were, 33.3% (n~) for Awassa, 15.3 % (n~26) for Yirgalem. 13.15 % (n~38) for Aletawendo. 14.29 % (n=14) for Hagereselam and 18.18 % (n=22) for Arbegona in extensive management. In the XIII intensive countcr part 8% (n~125) ror Yirgal em and 5. 1% (n~98) ror Awassa have been established. As th e observed average herd size was different for either of the management systems, categorizations into sm all , medium and large herd s was done differently. Consequently. in intens ive managemen t system, 2.87 %, 9.58% and 33.36% were the infectio n rate for small, medium and large herds, respec ti ve ly. In the extensive system the result was, 4. 81 % for sma ll , 50% for medium and 70% for large he rd s. In both intensive and extensive management systems, the va riati on between small and large was stat isticall y significant (P