Saturday, February 7, 2015

COCCIDIOSIS AND ITS IMPACT ON POULTRY PRODUCTION.

Coccidiosis a common disease of poultry caused by the parasite Eimeria of various spp. The Eimeria spp,affects the intestines of birds,some species affect the caeca and others the small intestine. Chicken affected by coccidiosis show varying signs depending on the type of the organisms that are affecting the birds. Birds are generally in bad conditions,depressed,blood in droppings, inappetence,pale comb , wattles and diarrhoea. Chicks with coccidiosis have a hunched appearance, droopy wings and the chicks appear sleepy.The effect of coccidiosis in chicks could result in acute epidemic,wasting and sudden death. The effect of coccidiosis on birds has huge impact on the production rate of the birds because of how the parasite affects the intestines and the resultant effect on feed absorption , conversion and weight gain. Coccidiosis in early stages of chick development impairs absorption and utilization of feed ,which compromises the growth of the birds and feed conversion. This results in high production cost because more feed will be required to meet market size. The exposure of chicks to live vaccine early in production will protect birds by stimulating the production of protective immunity to coccidiosis by delivering uniformly low doses of live oocysts. The use of vaccination to prevent coccidiosis is a better strategy compared to in- feed anticoccidials, or oral medication of coccidiostats. Eimeria parasite causing coccidiosis are often resistant to anticoccidial drugs, which results in sub-clinical coccidiosis often associated with in-feed anticoccidials and oral coccidiostat. Sub-clinical coccidiosis , occurs when in- feed anticoccidials lose effectiveness,thereby causing the coccidial oocyst to leak into the flock. The effect of sub-clinical coccidiosis are increased mal-absorption,reduced effective caloric value and high production cost.The coccidiosis challenge is one that impact poultry production,so it is of paramount importance to use vaccination as a tool to prevent coccidiosis. Vaccinate your birds against coccidiosis!!!!!. protect your birds!!!!. The pic are showing post mortem lesion of chicken affected by Eimeria spp. A) shows the distended small intestine with mottled haemorrhage. C) shows a cut section of the ceca showing heamorrhages . B)the severe pallor of pectoral muscle as a result of haemorrhage in ceaca.

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