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Coccidiosis
Coccidiosis is an intestinal disease affecting poultry flocks around the world. It is caused by the protozoan parasite Eimeria. Birds contract the parasites by ingesting them in the droppings of infected birds.
Coccidiosis results in intestinal lesions, impaired growth, poor feed utilization, poor flock uniformity and increased mortality. Because it damages the intestinal lining, coccidiosis predisposes birds to the development of necrotic enteritis, another intestinal disease caused by the bacterium Clostridium perfringens.
For years, the primary method for controlling coccidiosis, especially in broilers, has been in-feed anticoccidials. With their prolonged use, however, Eimeria organisms have become resistant to anticoccidials, hindering coccidial control. In addition, consumer demand for poultry raised without drugs has increased.
These trends have prompted more producers to use vaccination to control coccidiosis. A controlled dose of coccidial vaccine is administered once to day-old chicks, initiating the development of natural immunity against Eimeria.
Vaccination eliminates the need for withdrawal times, which are required when anticoccidials are used, as well as concerns about possible drug residues in poultry meat. Vaccination is also used to restore sensitivity to anticoccidials by replacing resistant, in-house strains of Eimeria with drug-sensitive Eimeria strains.
Click on the links below for more information:.
- Dr. David Chapman presents new guidelines for coccidiosis vaccines (Link)
- Vision, innovation and an aversion to anything routine keep Dr. Rae Fischer well ahead of the pack (Link)
- Studies show light, color can impact coccidiosis vaccine performance (Link)
- Veterinarians present visual guide for managing coccidiosis and plotting your success (Link)
- Autogenous vaccines should be backed by data (Link)
- European study backs earlier works in US showing that coccidosis vaccination restores Eimeria sensitivity (Link)
- Latest data confirm that vaccination yields equal or better protection that in-feed antibiotics (Link)
- Solving the E. mivati mystery (Link)
- Autogenous vaccine put to test against federally licensed industry leader (Link)
- Identifying viable, sporulated oocysts key to a quality coccidiosis vaccine (Link)
- Vaccine controls coccidiosis, improves performance in integrator’s controlled study (Link)
- Technical insights on managing coccidiosis in broilers (Link)
- New tools and strategies are helping Wayne Farms to better manage coccidiosis while optimizing both product and bird performance (Link)
- Martin Shirley is leading the way to better mapping the Eimeria genome and developing an even better understanding of coccidiosis in poultry (Link)
- Combating coccidiosis in broiler breeders (Link)
- Talking turkey: New approaches to managing coccidiosis in growing poults (Link)
- Gold Kist veterinarian focuses on coccidiosis vaccination to give ionophores and other drugs a much needed rest (Link)
- Mainstream poultry companies eye drug-free programs to address growing consumer demands for drug-free poultry (Link)
- Fine tuning timing and management helped Pilgrim’s Pride master the art of coccidiosis vaccination (Link)
- The effects of selection pressure on Eimeria populations (Link)
- Research, fields trials show coccidiosis vaccination pays — even for lightweight birds (Link)
- Study shows coccidiosis vaccination doesn’t deter competitive exclusion products from protecting birds against Salmonella enteritidis (Link)
- Switch to coccidiosis vaccine yields flexibility, performance for rapidly growing Peco Foods (Link)
- Performance of vaccinated birds equals or exceeds receiving traditional in-feed coccidiostats (Link)
- Preventing late coccidiosis cycling with vaccination may halt gangrenous dermatitis (Link)
- Controlling coccidiosis in drug-free production (PDF)
