Browsing by Author "Daniel Gizaw"

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    Serological, Pathological and Bacteriological Investigation of Mycoplasma Infection in Goats Slaughtered at Elfora Abttoir Debbre Zeit
    (Addis Ababa University Faculty Of Veterinary Medicine, 2006-06) Daniel Gizaw; Ademe Zcrihun
    A cross secti onal st ud~ of contagious caprinc pleuropneumonia in goals \\as conducted from October 1005 to March 2006: to dClCrminc seroprevalence. palholog~ and .\~\'c(lrl(l\lIla species in\'Oh cd in pneumonic lungs of goats s laughtered aI ELFRA expon abattoir. LaboratoT} \\or'" \\as carried ou t at ~ational Veterinar:- In stitute (1':VI). A total of 704 sera \\ cre collected from goal'. that purchased from A\\ 3Sh ( n= 114 ). Dire Oa\\3 (n ==100) and 13 0rana (n =180). Lsing the Complement Fix ation Test (CFT) an o\crall prc\alcnce of 48 J% (95%. CI 47.4 -51.1%) \\as obtained. The prc\alcnce in A\\3Sh. Dire Da\\3 and Barana \\cre 4:,3% (95% CI -41 1- 5-1.3%). 4-4.5% (95% CI 38.1 -5 1.9%) and 51.8% (Q5%. Cl 46.58°'0) respecti\cI~. -Iherc \\as no significant diOc re ncc (1'>0.05) in seTopn:'\a1ence among three origins. as \\ell as no statistical significance (p>0.05) among indi\idual age ... of goats. :\ serial c·ELlS:\ \-\-a s also conducted on CFT positl\e sera: ;1I;"~'ordingl~ an o\('rall rn:\alenee of I U~( (95% CI S.8 • 15.-Yo) \-\-as recordeJ. Seroprc\alence in .. \ \\ash. Dire Da\-\a and Horana \-\-cre 17% (95% C I II I - 25.9%). 5.6% 145° CI 2A - I:; 2' I and II - (95°'0 CI - 5 - IS.3) rcspectl\-el~ There \\- as significant diffen:nce (p<0.051 III InJi\idual age of goab using c·ELlSA. Further more. there "a" marginall~ signili.:am difference Ip<0.051 among the three origins. Lo\\cr seropre\alem:e "as recorded in hOlh te-;h in goals of Dire Dil" a origin Of the 704 lung"> of goat c,ammt'd for groS'i patholt)gical lesions 9-t 1 13A%) had lung lesions of \\ hich 33 ( 14 -°0 I. 18 (9.0°1 I Jnd -13 (1:'.5" ,) \-\-ere from goat.;; that originated from .\\\J-;h. D ire Da\\a and Bor,:m.! respecti' el~ I he pre\ aicllCe of lung. lesions didn·t \- ariOlh ... ignifjcalHl~ (p>0.05) among their ori£ll1s. 1l0\\t'\er. pn:',alence of lung lesions \\lIhin mdi\idual age~ 01 goalS \\<1'> signilicantl~ different IpIII11IJ11iae and\! argillilli The isolallon of pathogenic .the ,/,/,lll1ltl :specie:. of .t/ap and II .1.-.!altlL·li,lt' from Jpparentl~ health~ slaughtered goats could be an lIldication of ehron!\." carrier. "hieb might ha\e 'ipread the organi'ims throughout thelf \\3) to the slaughterhouse
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    Serological, Pathological and Bacteriological Investigation of Mycoplasma Infection in Goats Slaughtered at Elfora Export Abattoir, Debre Zeit
    (2006-06) Daniel Gizaw; Ademe Zerihun
    A cross sectional study of contagious caprine pleuropneumonia in goats was conducted from October 2005 to March 2006; to determine seroprevalence, pathology and Mycoplasma species involved in pneumonic lungs of goats slaughtered at ELFRA export abattoir. Laboratory work was carried out at National Veterinary Institute (NVI). A total of 704 sera were collected from goats that purchased from Awash (n= 224), Dire Dawa (n =200) and Borana (n =280). Using the Complement Fixation Test (CFT) an overall prevalence of 48.3% (95% CI 47.4 -52.1%) was obtained. The prevalence in Awash, Dire Dawa and Barana were 47.3% (95% CI 41.2- 54.3%), 44.5% (95% CI 38.1-51.9%) and 51.8% (95% CI 46-58%) respectively. There was no significant difference (p>0.05) in seroprevalence among three origins, as well as no statistical significance (p>0.05) among individual ages of goats. A serial c-ELISA was also conducted on CFT positive sera; accordingly an overall prevalence of 11.8% (95% CI 8.8 - 15.7%) was recorded. Seroprevalence in Awash, Dire Dawa and Borana were 17% (95% CI 11.1 - 25.9%), 5.6% (95% CI 2.4 - 13.2%) and 11.7% (95% CI 7.5 - 18.3) respectively. There was significant difference (p<0.05) in individual age of goats using c-ELISA. Further more, there was marginally significant difference (p<0.05) among the three origins. Lower seroprevalence was recorded in both tests in goats of Dire Dawa origin. Of the 704 lungs of goat examined for gross pathological lesions 94 (13.4%) had lung lesions of which 33 (14.7%), 18 (9.0%) and 43 (15.5%) were from goats that originated from Awash, Dire Dawa and Borana respectively. The prevalence of lung lesions didn’t various significantly (p>0.05) among their origins. However, prevalence of lung lesions within individual ages of goats was significantly different (p<0.01). Of total 94 pneumonic lungs and 4 thoracic fluids cultured on Hayflik’s solid and liquid media, Mycoplasma was isolated from 15 (16%) pneumonic lung lesions. The Mycoplasma species identified includes: - M. mycoides subsp. mycoides Large colony (MmmLC), M. agalactiae, M. capricolum subsp. capricolum (Mcc), M. capricolum subsp. capripneumoniae (Mccp), M. ovipneumoniae and M. arginini. The isolation of pathogenic Mycoplasma species of Mccp and M. agalactiae from apparently healthy slaughtered goats could be an indication of chronic carrier, which might have spread the organisms throughout their way to the slaughterhouse.