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|Advisor:||Brar, R. S.|
|Title:||Prevalence and pathology of diseases affecting broilers at selected farms|
|Publisher:||Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana|
|Keywords:||prevelence, pathology, diseases, broilers|
|Abstract:||The present investigation was undertaken to study the prevalence and pathology of diseases affecting broilers at selected farms. The prevalence of omphalitis was maximum (0.74%) followed by CRD (0.66%), aflatoxicosis (0.41%), colibacillosis (0.39%), IBH (0.29%), coccidiosis (0.16%), aspergillosis (0.14%), HPS (0.14%) gangrenous dermatitis (0.11%), rickets (0.10%), IBD (0.08%) and gout (0.06%). Maximum mortality was recorded in 1-2 weeks age groups and minimum in 6-7 weeks old birds. The clinical signs, gross and histopathological alterations in the affected tissues from different disease conditions were also recorded. Antimicrobial sensitivity of organisms isolated from omphalitis and colibacillosis cases showed that most of the isolates were sensitive to pefloxacin, norfloxacin, nalidixic acid, enrofloxacin and chloramphenicol while resistant to penicillin-G, ampicillin, erythromycin, kanamycin, streptomycin and cephalexin. The levels of aflatoxin in suspected feed samples ranged from 50±25 to 225±25 ppb. Various managemental problems such as improper vaccination, poor ventilation, overcrowding, improper fumigation and disinfection of poultry houses, presence of mycotoxins in the feed ingredients, wet litter, indiscrimate use of antibiotics, improper feed mixing and unjudicial use of anticoccidials were responsible for higher disease incidence at the farms. Based on these, various corrective measures were suggested. After adoption of proper managemental practices, a decreased disease incidence was observed in the subsequent flocks.|
|Appears in Collections:||Theses|
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