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Articles by I.W. Musa
Total Records ( 4 ) for I.W. Musa
  I.D. Jatau , N.H. Sulaiman , I.W. Musa , A.I. Lawal , O.O. Okubanjo , I. Isah and Y. Magaji
  This study is aimed to report the prevalence of coccidia infection and preponderance Eimeria species of free range indigenous and intensively managed exotic chickens in Zaria, Nigeria. Seventy whole intestines each from slaughtered market age broilers, layers and indigenous chickens were collected from live bird market in Zaria from March through July, 2011. Contents of each intestinal tract were examined microscopically in the laboratory for the presence of coccidia oocysts using simple floatation technique and graded based on number of oocysts per field as, in apparent infection, low grade infection, severe infection for oocysts counts of 1-10, 11-20 and >20 per field, respectively. To identify the likely Eimeria species contained in each sample, oocysts shape index of twenty randomly selected oocysts were determined by measuring their lengths and widths using a calibrated ocular micrometer at 400x magnification. The 33.3% of all the collected samples had coccidia infection, with specific prevalence rates of 44.3% in layers, 37.1% in broilers and 18.6% in indigenous chickens. The 80.7% of the infected layers had unapparent coccidia infection, while 12.9 and 6.5% had low and severe grades infections, respectively. Similarly, 69.2% of the infected broilers were unapparently infected while 26.9 and 3.9% were moderately and severely infected with coccidia, respectively. More so, 84.6% of the infected indigenous chickens had in apparent infection, while only 7.69% each had low grade and severe infections. All the seven Eimeria species of chickens were identified with overall prevalences of: E. maxima (58.6%), E. acervulina (47.1%), E. mitis (30.0%), E. brunetti (28.6%), E. tenella (22.9%) and E. praecox (8.6%). Mixed Eimeria species infections were common among the sampled chickens with overall prevalence 61.4%.
  I.W. Musa , L. Sai`du and E.S. Abalaka
  The economic significance of infectious bursal disease is well known to worldwide poultry farmers. Reported cases of concern in chickens by researchers have primarily been targeted at direct mortality, secondary bacterial infections, immuno-suppression with major impacts on production efficiency and decrease responses to vaccination. This study evaluates economic losses of 3 successive recurrent outbreaks of IBD in a commercial poultry farm in Kano, Nigeria and also projected 3 year (2009-2011) economic losses. Contrary to many research findings, increased age dependence and high mortality rates were observed during the study. Spreadsheet method of disease analysis (2003) was used to project economic loss of over three billion naira during these years under study. Due to high prevalence of IBD in Nigeria, it has become necessary to attempt to quantify the economic impact of IBD so that its economic losses could be appreciated, quick decisions are made on how best to prevent, control and design research priorities. The negative impacts of IBDV can be strategically minimised by good planning, effective vaccination and sound biosecurity principles.
  I.W. Musa , L. Sa`idu , I.D. Jatau , J. Adamu , M.O. Otu and P.A. Abdu
  Field outbreaks of coccidiosis all over the world were commonly reported in chickens over 3-weeks of age. Outbreak of coccidiosis in birds in the first few weeks of life is becoming increasing important but chickens less than 1-week of age appeared not to be susceptible. This case report describes the clinical signs and gross lesions of coccidiosis as well as its microscopic appearance in a five-day old intensively managed broiler breeder chicks. The outbreak occurred in December, 2009 and was characterized by early onset of an acute disease with high mortality. Other clinical features of the disease were: progressive increase and sudden decline of high chick mortality of up to 50%, ruffled feathers, blood stained whitish to brownish diarrhea, weakness and anorexia. Gross lesions seen were congested carcasses, distended caeca and intestinal segments with blood, mucus and tissue debris; retained yolk sac was also observed in some birds. Whole intestines were submitted to the Protozoology and retained yolk sac to Microbiology Laboratories for investigations. A farm visit revealed very poor housing ventilation and wet litter. Laboratory results confirmed coccidian schizonts and gametocytes from caeca and intestinal scrapings. Escherichia coli was isolated from the yolk sac. High hygienic standards must be maintained in hatcheries and poultry houses, damp and warm litter must be avoided and adequate ventilation should always be provided in poultry houses to prevent coccidiosis.
  I.W. Musa , P.A. Abdu , A.K.B. Sackey , S.B. Oladele , S. Lawal and I.U. Yakubu
  This report describes an outbreak of an acute, highly lethal, Newcastle Disease (ND) in two broiler flocks that were intensively managed and vaccinated against Newcastle disease. The broiler flocks (325) were four weeks and (450) were six weeks old at the time of the outbreak. Clinical characteristics of the disease included a 100% morbidity, increasing high mortality i.e. 40 birds (day one), 70 birds (day two), 180 (day three) and the entire flocks consisting of 755 birds were lost by the fifth day. Clinical features observed included severe depression, gasping, anorexia, cyanosis and subcutaneous haemorrhages of the legs and shank. Gross lesions seen were severe congestion of skeletal muscles and visceral organs and severe haemorrhages and congestion of the proventriculus, cecal tonsils and trachea, air saculitis with severely congested and pneumonic lungs were observed as well. Ten cloacal swabs from dead and sick birds were tested using a Rapid Newcastle Disease and Avian Influenza Antigen Detection Test Kits. This Chromatographic- immunoassay tested positive for ND and negative for AI confirming the presence of ND viral antigen. Four dead and live birds taken to National Veterinary Research Institute (NVRI) Vom, Nigeria for further confirmation were tested using rapid test kit, haemagglutination inhibition test and viral isolation. These tests were also negative for AI but positive for vvND. Clinical signs and gross lesions of ND and Highly Pathogenic Avian Influenza (HPAI) seem not to be distinguishable in the field. This is likely going to affect disease reporting and actions to be taken. Vaccination against ND should not be totally relied upon especially when birds are not seromonitored pre and post vaccination.
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