Eimeria in Domestic Livestock Flashcards
Name the two Eimeria that affect cattle
E. zuernii, E. bovis
Name the two Eimeria that affect sheep
E. ovinoidalis, E. cardallis
Name the two Eimeria that affect goats
E. arloingi, E. ninkohlyakimovae
Name the two Eimeria that affect rabbits
E. flavescens, E. intestinalis
Name the Eimeria that affects pigs
E. debliecki
Name the Eimeria that affects horses
E. leuckarti
Bovine coccidiosis has a lifecycle of 1-4 weeks depending on species, what are the PPPs for E.bovis or E.zuernii?
EB- 17-22d
EZ- 16-19d
Which areas of the gut are affected by Bovine cocci? What stage of the lifecycle causes pathology and what is that pathogenesis?
Lower SI, caecum and colon. Rupture of the cells causes clinical signs- bloody diarrhea, tenesmus, anorexia and a slight fever
Is severity of clinical infection directly or indirectly related to the infective dose?
Directly- more = BAD. However a low infective dose may not produce disease, or just cause weight loss and result in immunity to that particular Eimeria
What age cattle are usually affected by cocci?
1m-1y with high morbidity and low mortality
Name 4 methods of control for bovine cocci
Avoid overcrowding, calving areas should be well drained, feed and water kept free from faeces, avoid mixed age groups
Treatment or prevention? Amprolium Corid
Both
Treatment or prevention? Sulfaquinoxaline
Treatment
Treatment or prevention? Sulfamethazine
Treatment
Treatment or prevention? Decoquinate
Prevention, allows natural immunity to develop
Treatment or prevention? Lasacolid
Prevention
Treatment or prevention? Toltrazuril
Both
How are sheep infected with cocci?
Ingestion of sporulated oocysts from pasture or bedding
Which areas of the gut are affected in sheep cocci?
Ileum, caecum and upper colon
Describe clinical signs of sheep cocci
diarrhoea (+/-mucus, blood), ill-thrift, weight loss, inappetance, dehydration, fever, possibly anaemia. Severity is proportional to infectious dose
What age group and other factors that predispose sheep to cocci?
4-8 weeks, twins and triplets as they receive less colostrum, intensive grazing areas, feedlots, mixed age groups, stress, poor nutrition, severe weather, concurrent infections
Diagnosis of cocci
Number of oocytes in faeces, history/clinical signs, PM
Rabbit cocci- what causes pathogenesis? Which are most at risks? What control is used in rabbit farms?
Destruction of intestinal crypts leads to reduced appetite, diarrhoea and emaciation
Young rabbits at risk
Coccidiostats, wire floors, controlled environment
