SEROPREVALENCE AND PATHOLOGY OF MYCOPLASMA GALLISEPTICUM AND MYCOPLASMA SYNOVIAE IN LOCAL CHICKENS IN THREE LOCAL GOVERNMENT AREAS IN NIGER STATE, NIGERIA
SEROPREVALENCE AND PATHOLOGY OF MYCOPLASMA GALLISEPTICUM AND MYCOPLASMA SYNOVIAE IN LOCAL CHICKENS IN THREE LOCAL GOVERNMENT AREAS IN NIGER STATE, NIGERIA
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Date
2012-08
Authors
AHMED, James Sa'idu
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Abstract
Mycoplasmosis is one of the important diseases of exotic and local poultrybreeds in Nigeria. The
disease causes decreased feed efficiency, poor carcass quality and sub-optimal egg production in
layers. Seroprevalence of Mycoplasma gallisepticum(MG) and M. synoviae(MS) infection in
local chickens in three Local Government areas (L.G.A.) of Niger State was determined between
August and December, 2010. A total offive hundred and fifty two blood samples were collected.
Serum plate agglutination (SPA) test and a combined MG/MSEnzyme-linked immunosorbent
assay(ELISA)techniques were used to determine the presence of antibodies against M.
gallisepticum and M. synoviae. The overall seroprevalence of MG was 85.86%, while the
prevalence for MS was 79.71% with SPA test. The ELISA gave a seroprevalence of 91.84% for
both MG and MS. There was highly significant difference (P<0.001) between the mean red blood
cell (RBC), haemoglobin (Hb) and packed cell volume (PCV)(3.28 ± 2.23×106/ml, 14.45 ±
7.85g/dl, 44.85 ± 30.15%,respectively) of the chickens affected by MG and MS in Kontagoraand
the corresponding mean RBC, Hb and PCV (2.36 ± 1.55×106/ml, 12.6 ± 7.65g/dl, 32.05 ±
23.85%, respectively)in Minna. The results of the serum biochemistry obtained during this study
were lower than the reports of previous works by Durotoyeet al. (2000) but similar to the report
of Ladokunet al.(2008) who also reported serum total protein range of 4.63 - 4.81 mg/dl,
cholesterol 31.3 – 32.45mg/dl and albumin 3.28 - 3.48 g/dl in Nigerian chickens.
Thehistopathological changes of some lung tissues collected from apparently healthy chickens
revealed varying degrees of cellular infiltrations in the lungs. It was concluded thatM.
gallisepticum and M. synoviaeare in circulation among local chickens in three Local Government
Areas surveyed and they could serve as major reservoirs of these organisms in Niger State and in
Nigeria as a whole.
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES AHMADU BELLO UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF DEGREE OF MASTER OF SCIENCE IN VETERINARY PATHOLOGY DEPARTMENT OF VETERINARY PATHOLOGY, FACULTY OF VETERINARY MEDICINE, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA
Keywords
SEROPREVALENCE,, PATHOLOGY,, MYCOPLASMA GALLISEPTICUM,, MYCOPLASMA SYNOVIAE,, LOCAL CHICKENS, NIGER STATE,, NIGERIA.