Ectoparasite Control in LA Flashcards
What is this skin disease?
Orf - virus and potential of 2° Bac infection
What would you use to treat Orf?
Antibiotics/Antibacterials
-Based on C+S and NSAIDS commonly used
What is this skin diease?
Flystrike - issue with soiled fleece + infected with maggots
What would you use to treat Flystrike?
- Shear as tx cannot penetrate the wool
- Can see affected area and can wash
- Pyrethroids - pour on (only one licensed)
What is the action of Pyrethroids?
- Ectoparaciticides
- Block sodium channels in nerve cells and
induce paralysis
What is used to prevent Flystrike?
Insect growth regulators
• Cyromazine - Chitin synthesis interference
• Dicyclanil - Molting interference
What is this skin disease?
This is Lice (Hair loss, pruritic)
What is the treatment for Lice?
Pyrethroids
(Organophosphates dips- AChE receptor blocking)
Why are Organophospates not used as frequently anymore?
- Highly toxic to all species
- Diazinon only UK approved active ingredient
• Requires external company to come in with dips + dispose of
+ High quality PPE
• Post dip lameness - older lambs affected by E.rhusopathiae - infection through small abrasions - CS: Stiff
What is the skin disease?
Scab
What is the treatment for Scab?
- Macrocylic lactones (Clear drench) - dual action - wormer too
- Organophosphates
What is the action of Avermectins/Macrocyclic Latones?
- Bind to glutamate-gated chloride channel receptors
- Flaccid paralysis of pharynx
- Internal/External parasites affected
AD: Easy to administer than op dips
DISAD: affects worming regimes
What is this skin disease?
Ringworm
What is the treatment for Ringworm?
Antifungals - only one licensed: Enilconazole - block synthesis of ergosterol
Need to wash animal every other day - unlikely to happen
Other TX: vaccines or turn out and cures spontaneously
What is this skin disease?
Mange
Affecting the Rump, red, sore
