Eimeria in Domestic Livestock

Question 1

Name the two Eimeria that affect cattle

Answer 1

E. zuernii, E. bovis

Question 2

Name the two Eimeria that affect sheep

Answer 2

E. ovinoidalis, E. cardallis

Question 3

Name the two Eimeria that affect goats

Answer 3

E. arloingi, E. ninkohlyakimovae

Question 4

Name the two Eimeria that affect rabbits

Answer 4

E. flavescens, E. intestinalis

Question 5

Name the Eimeria that affects pigs

Answer 5

E. debliecki

Question 6

Name the Eimeria that affects horses

Answer 6

E. leuckarti

Question 7

Bovine coccidiosis has a lifecycle of 1-4 weeks depending on species, what are the PPPs for E.bovis or E.zuernii?

Answer 7

EB- 17-22d

EZ- 16-19d

Question 8

Which areas of the gut are affected by Bovine cocci? What stage of the lifecycle causes pathology and what is that pathogenesis?

Answer 8

Lower SI, caecum and colon. Rupture of the cells causes clinical signs- bloody diarrhea, tenesmus, anorexia and a slight fever

Question 9

Is severity of clinical infection directly or indirectly related to the infective dose?

Answer 9

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

Question 10

What age cattle are usually affected by cocci?

Answer 10

1m-1y with high morbidity and low mortality

Question 11

Name 4 methods of control for bovine cocci

Answer 11

Avoid overcrowding, calving areas should be well drained, feed and water kept free from faeces, avoid mixed age groups

Question 12

Treatment or prevention? Amprolium Corid

Answer 12

Both

Question 13

Treatment or prevention? Sulfaquinoxaline

Answer 13

Treatment

Question 14

Treatment or prevention? Sulfamethazine

Answer 14

Treatment

Question 15

Treatment or prevention? Decoquinate

Answer 15

Prevention, allows natural immunity to develop

Question 16

Treatment or prevention? Lasacolid

Answer 16

Prevention

Question 17

Treatment or prevention? Toltrazuril

Answer 17

Both

Question 18

How are sheep infected with cocci?

Answer 18

Ingestion of sporulated oocysts from pasture or bedding

Question 19

Which areas of the gut are affected in sheep cocci?

Answer 19

Ileum, caecum and upper colon

Question 20

Describe clinical signs of sheep cocci

Answer 20

diarrhoea (+/-mucus, blood), ill-thrift, weight loss, inappetance, dehydration, fever, possibly anaemia. Severity is proportional to infectious dose

Question 21

What age group and other factors that predispose sheep to cocci?

Answer 21

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

Question 22

Diagnosis of cocci

Answer 22

Number of oocytes in faeces, history/clinical signs, PM

Question 23

Rabbit cocci- what causes pathogenesis? Which are most at risks? What control is used in rabbit farms?

Answer 23

Destruction of intestinal crypts leads to reduced appetite, diarrhoea and emaciation
Young rabbits at risk
Coccidiostats, wire floors, controlled environment