Eimeria and Isospora

Question 1

What two genera of Coccidia cause enteric coccidiosis?

Answer 1

Eimeria and Isospora

Question 2

Species affected by Eimeria

Answer 2

poultry and ruminants

Question 3

Species affected by Isospora

Answer 3

swine, cats, dogs

Question 4

Are coccidia species host-specific?

Answer 4

yes

Question 5

of Sporocysts and Sporozoites in Eimeria

Answer 5

4 sporocysts with 2 sporozoites each

Question 6

of Sporocysts and Sporozoites in Isospora

Answer 6

2 sporocysts with 4 sporozoites each

Question 7

Transmission of Eimeria/Isospora?

Answer 7

fecal-oral

Question 8

What stage of the coccidia is shed in the environment?

Answer 8

oocysts

Question 9

Diagnosis of Eimeria and Isospora

Answer 9

fecal float (but clinical signs appear before eggs are shed), also intestinal lesions

Question 10

2 Eimeria Species in poultry

Answer 10

1. Eimeria acervulina
2. Eimeria tenella

Question 11

Which is more common - Eimeria acervulina
or Eimeria tenella?

Answer 11

Eimeria acervulina

Question 12

Which is more pathogenic - Eimeria acervulina
or Eimeria tenella?

Answer 12

Eimeria tenella

Question 13

Clinical Signs of Chicken Coccidiosis

Answer 13

bloody droppings, emaciation, pallor, inappetence, acute death; intestinal lesions

Question 14

Control and Tx of Chicken Coccidiosis

Answer 14

isolate sick birds (they gon die), treat the healthy birds with anti-coccidials

Question 15

What three species of Eimeria are pathogenic in turkeys?

Answer 15

1. Eimeria adenoeides
2. Eimeria gallopavonis
3. Eimeria meleagrimittis

Question 16

Age of Bovine Coccidiosis? Why?

Answer 16

2-6 months

up to 3 weeks, still have protection from colostrum

Question 17

What two species of Eimeria are most pathogenic in bovine?

Answer 17

1. Eimeria zuernii
2. Eimeria bovis

Question 18

Common preventative med for Eimeria?

Answer 18

ionophores

Question 19

Eimeria stiedai

Answer 19

infect the bile duct epithelium in rabbits, therefore diarrhea is secondary

Question 20

Isospora suis

Answer 20

swine coccidiosis

Question 21

Age of swine coccidiosis?

Answer 21

suckling piglets (7-14 days old)

Question 22

Clinical signs of Isospora suis?

Answer 22

severe yellow-gray pasty diarrhea with a sour milk smell, depressed weight gains

Question 23

Can you treat swine coccidiosis?

Answer 23

anti-coccidials are not effective - best solution is to eliminate crowding and improve sanitation

Question 24

Isospora canis

Answer 24

largest oocysts of the isosporas which infect canines; causes diarrhea d/t [weaning] stress

Question 25

Isospora felis (and rivolta)

Answer 25

infect cats, felis is the larger of the two

Question 26

Which is Isospora and which is Eimeria?

Answer 26

Question 27

Answer 27

Eimeria bovis oocysts

Question 28

Bovine Coccidiosis signs

Answer 28

listlessness, anorexia, projectile liquid bloody diarrhea