Biomaterial Database

Prevalence of Eimeria acervulina, Eimeria necatrix, Eimeria brunetti and Eimeria tenella in Georgia (USA) as demonstrated by immunity challenge techniques. 1977

T Karlsson, and W M Reid

Eimeria acervulina, E. necatrix, E. brunetti and E. tenella were found to be widely distributed in north-east Georgia. 2. Using immunity challenge techniques 17 flocks from 12 to 72 weeks of age showed significantly lower lesion scores for the first three species compared with susceptible control flocks similarly challenged. Only one flock was found to be susceptible to E. tenella. No mortality occurred in the field flocks after challenge while 20 to 60% mortality occurred in the susceptible controls. 3. Partial immunity occurred more frequently in field flocks aged 28 weeks of age or less (62%) than in older flocks (30%). Lesion scores ranged from 0-1 to 2-2 with the former and 0-1 to 0-6 with the latter group. 4. A modification of the immunity challenge method was developed using lesion scores as the major criterion determining immunity. The method permits testing of four species infecting different parts of the digestive tract in one group of birds.

UI	MeSH Term	Description	Entries
D011201	Poultry Diseases	Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild.	Disease, Poultry,Diseases, Poultry,Poultry Disease
D002645	Chickens	Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA.	Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D003048	Coccidiosis	Protozoan infection found in animals and man. It is caused by several different genera of COCCIDIA.	Besnoitiasis,Besnoitiosis,Besnoitiases,Besnoitioses,Coccidioses
D004539	Eimeria	A genus of protozoan parasites of the subclass COCCIDIA. Various species are parasitic in the epithelial cells of the liver and intestines of man and other animals.	Eimerias
D005845	Georgia	A state located in the southeastern United States, The capital is Atlanta.
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia