Farm Animal Skin Disease 🐑 🐄
Approach: Define and Refine Parasitic Conditions that affect the Other skin disease
skin of farm animals
1. Define and refine - Pruritic Sheep Dermatophilosus (s, c)
2. Consider local epidemiology - Non-pruritic - Psoroptes ovis Cellulitis/subcut abcesses (ALL)
a. And on farm spread - Bovicola ovis Erysipelas (P)
- Primary - Linognathasus ovillus Staph infections (all)
(single vs group
- Secondary Cattle - Varying presentations
problem) ➢ - Lice - Various species depending on spp
3. Overall farm management - Age of animal affected - Psoroptes species Viral
4. Clinical signs - Young VS no - Chorioptes bovis - Warts/papillomatosis (C)
a. Distribution of predilection - Sarcoptes scabei - Orf (s,p,cam)
lesions - Demodex bovis - Swine pox (p)
5. Decide on appropriate tests - Worth treating? Multispecies - Camelpox (cam)
- Benign neglect? - Ticks Fungal
a. Observation
- Flies - Dermatophytosis (Ringworm)
b. Skin scrapes of - Parasitic - Midges (c,p)
lesion - Non-parasitic Pigs Photosensitisation (s,c)
c. Culture and - Sarcoptic Mange Periorbital eczema (s)
sensitivity - Demodectic mange (In growing horns) (s)
6. Legal issues considered - Lice (Haematopinus suis)
7. Appropriate/empirical Poultry Copper deficiency (c)
- Dermanyssus gallinae SCRAPIE (s)
therapy
- Northern fowl mite Pityriasis Rosea (p)
8. Response to treatment (Ornithonyssus sylvarum) Zinc responsive dermatosis
- Common chicken louse
(Menopon gallinae)
- Scaly leg mite
(Cnemidocoptes mutans
- Depluming mite
(Cnemidocoptes gallinae
Camelids
- Psoroptes species
- Chorioptes
- Sarcoptes
1
, Topic: Description Clinical Signs Epidemiology Diagnostics Treatment
Sheep 🐑
Lice Bovisola ovis - most common Lice + mites: Rubbing Increasing in prevalence Careful parting of wool + Shear sheep
nibbling at wool inspection for lice Treat w/ pour on - (after shear)
Pruritus Mostly autumn/winter - Cypermethrin
diseases Hard to visually diagnose - Alphacypermethrin
Sometimes get mixed - Close grouping = dk if mites or lice - Deltamethrin
infection (lice and mite) (sheds) Dipping
- Long wool Hair pluck - microscope - Synthetic pyrethroids,
Suitable environmental IGR (not UK)
conditions for replication - Organophosphates
Mites (scabs) Psoroptes ovis = sheep scab Pustules ^^ Skin scraping Macrocyclic lactones
Spreading moist lesions - Mainstay of - Ivermectin, Doramectin
High costs to industry Damage to fleece Lives off host for around investigation - Injectable products
17 days - Skill - Variable characteristics
+ Yellowing skin - KOH digestion Will interfere with worming
Clinical signs from w-m if not seen programme → treatment kills
post infection (35d) - ^ was the mite worms as well
alive at time of
Not all sheep show scraping Ineffective against lice
infection - Scrape until see
clean skin ( not Resistance?
Chronic infection of up too deep)
to 2 years - Can redo if Organophosphate dips
- No clinical can’2 see it - Diazinon
signs - AchE inhibitor
Antibody test - Toxic to everything
- Kills within 24h
Response after 2 weeks - Disposal either by
contractor or licensed
Useful quarantine tool land area
Dipping practice:
- Treatment time - 1m
- Head dipped 2x
- Should not be fouled
- Allow sheep to drain into
concrete (not into water)
- Avoid when gonna rain
2
Approach: Define and Refine Parasitic Conditions that affect the Other skin disease
skin of farm animals
1. Define and refine - Pruritic Sheep Dermatophilosus (s, c)
2. Consider local epidemiology - Non-pruritic - Psoroptes ovis Cellulitis/subcut abcesses (ALL)
a. And on farm spread - Bovicola ovis Erysipelas (P)
- Primary - Linognathasus ovillus Staph infections (all)
(single vs group
- Secondary Cattle - Varying presentations
problem) ➢ - Lice - Various species depending on spp
3. Overall farm management - Age of animal affected - Psoroptes species Viral
4. Clinical signs - Young VS no - Chorioptes bovis - Warts/papillomatosis (C)
a. Distribution of predilection - Sarcoptes scabei - Orf (s,p,cam)
lesions - Demodex bovis - Swine pox (p)
5. Decide on appropriate tests - Worth treating? Multispecies - Camelpox (cam)
- Benign neglect? - Ticks Fungal
a. Observation
- Flies - Dermatophytosis (Ringworm)
b. Skin scrapes of - Parasitic - Midges (c,p)
lesion - Non-parasitic Pigs Photosensitisation (s,c)
c. Culture and - Sarcoptic Mange Periorbital eczema (s)
sensitivity - Demodectic mange (In growing horns) (s)
6. Legal issues considered - Lice (Haematopinus suis)
7. Appropriate/empirical Poultry Copper deficiency (c)
- Dermanyssus gallinae SCRAPIE (s)
therapy
- Northern fowl mite Pityriasis Rosea (p)
8. Response to treatment (Ornithonyssus sylvarum) Zinc responsive dermatosis
- Common chicken louse
(Menopon gallinae)
- Scaly leg mite
(Cnemidocoptes mutans
- Depluming mite
(Cnemidocoptes gallinae
Camelids
- Psoroptes species
- Chorioptes
- Sarcoptes
1
, Topic: Description Clinical Signs Epidemiology Diagnostics Treatment
Sheep 🐑
Lice Bovisola ovis - most common Lice + mites: Rubbing Increasing in prevalence Careful parting of wool + Shear sheep
nibbling at wool inspection for lice Treat w/ pour on - (after shear)
Pruritus Mostly autumn/winter - Cypermethrin
diseases Hard to visually diagnose - Alphacypermethrin
Sometimes get mixed - Close grouping = dk if mites or lice - Deltamethrin
infection (lice and mite) (sheds) Dipping
- Long wool Hair pluck - microscope - Synthetic pyrethroids,
Suitable environmental IGR (not UK)
conditions for replication - Organophosphates
Mites (scabs) Psoroptes ovis = sheep scab Pustules ^^ Skin scraping Macrocyclic lactones
Spreading moist lesions - Mainstay of - Ivermectin, Doramectin
High costs to industry Damage to fleece Lives off host for around investigation - Injectable products
17 days - Skill - Variable characteristics
+ Yellowing skin - KOH digestion Will interfere with worming
Clinical signs from w-m if not seen programme → treatment kills
post infection (35d) - ^ was the mite worms as well
alive at time of
Not all sheep show scraping Ineffective against lice
infection - Scrape until see
clean skin ( not Resistance?
Chronic infection of up too deep)
to 2 years - Can redo if Organophosphate dips
- No clinical can’2 see it - Diazinon
signs - AchE inhibitor
Antibody test - Toxic to everything
- Kills within 24h
Response after 2 weeks - Disposal either by
contractor or licensed
Useful quarantine tool land area
Dipping practice:
- Treatment time - 1m
- Head dipped 2x
- Should not be fouled
- Allow sheep to drain into
concrete (not into water)
- Avoid when gonna rain
2
