Green Global
Foundation   Journal
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NECROTIC ENTERITIS IN CHICKENS: PATHOLOGICAL, BACTERIOLOGICAL AND THERAPEUTICAL INVESTIGATION (Pages : 1 - 7)

Necrotic enteritis (NE) in commercial chickens was investigated around Hajee Mohammad Danesh Science and Technology University at Dinajpur of Bangladesh during 2007 to 2008 and diagnosed based on pathological, bacteriological and therapeutical findings. The disease is commonly found in commercial poultry farms and causes moderate to severe economic loss to the small scale poultry farmers by a remarkable mortality of the birds and their reduced weight gain. Among the 17 NE incidences, 9 in broiler, 5 in layer and 3 in cockerel flocks were detected during the course of the study. The number of the birds/farms was variable and they were reared on litter. The clinical signs as well as necropsy findings were noted during the physical visit of the farms and in laboratory when the birds were submitted. The recording of morbidity and mortality rates, bacteriological identification of the causative organisms, histopathological study of the preserved intestinal samples and therapeutic managements of the affected flocks without performing drug sensitivity were also done. The clinically affected birds generally showed moderate to severe depression, diarrhoea and death. The morbidity rate was around 100% but mortality rate was variable. At necropsy the birds were good bodily condition and severely dehydrated. Markedly thickened mucosa revealed yellow-brownish diphtheritic membrane, haemorrhages occasionally and ballooning of intestine with gas were the major gross morbid lesions. Clostridial organisms were isolated and identified on bacteriological examinations. Better therapeutic responses to oxytetracycline and tiamulin hydrogen fumerate along with carbon tetracycline were recorded. Download