Ectoparasites of ruminants

Question 1

Clinical signs of biting lice

Answer 1

Hair loss & lick marks (pruritus)
Adult & juvenile lice + eggs
Lice eggs glued to hair shafts

Question 2

Identifying Bitting lice Bovicola bovis

Answer 2

Rounded mouthparts
6 legs

Question 3

Identifying Sucking lice of Cattle (Haematopinus eurysternus)

Answer 3

Piercing mouthparts
6 legs

Question 4

Most common chewing mite

Answer 4

Chorioptes bovis

Question 5

Identifying Chorioptes bovis

Answer 5

Classically discrete lesions in the skin folds on either side of the tail head with little inflammation

Question 6

Ectoparasite diagnosis

Answer 6

Visual inspection; sampling
Skin scrapes for mange mites

Question 7

Ectoparasiticide products for lice and mange in Cattle

Answer 7

Ivermectin

Question 8

Sheep Scab Control

Answer 8

Dips (Organophosphate - OP)
Injectables (Macrocyclic Lactone – ML)

Question 9

Transmission of sheep scab

Answer 9

Direct
At markets, shows etc.
From brought in animals

Indirect
On fences
Shearing equipment

Question 10

Treatments for Sheep scab

Answer 10

Diazinon Dip
Ivermectin Inj

Question 11

Insecticides for the treatment and control of blowfly strike

Answer 11

Diazinon Dip
Cypermethrin Pour on

Question 12

Acaricides for the control of ticks in sheep

Answer 12

Diazinon Dip
Cypermethrin Pour on