(D3) Parasitic Dermatological Diseases in Ruminants and Horses

what is it

equine bots

what is it

Equine bots

what do equine bots look like

wasp-like

does equine bots have a direct or indirect life cycle

direct

what are the 2 types of equine bots

1. Gasterophilus intestinalis:

2. Gasterophilus nasalis:

where are the nits for Gasterophilus intestinalis:

legs

what causes Gasterophilus intestinalis: to hatch

Licking stimulus to hatch

where are nits for Gasterophilus nasalis:

face

what causes Gasterophilus nasalis: to hatch

Hatch in response to temperature.

how long do equine bot larvae live in the mouth for

up to 3 weeks

where do equine bots migrate to after the mouth

stomach

how long do equine bot larvae live in stomach for

10 months

where do equine bot larvae go after they hatch

mouth

how long is the prepatent period in equine bots

1 yrs

clinical signs of equine bots (6)

1. Yellow nits on the hair of legs, face.

2. Larvae in feces

3. colic

4. Stress

5. a sore in tongue/mouth.

6. larva do deplete nutrition.

how to diagnose equine bots (3)

1. Necropsy

2. Nits on hair.

3. Larvae in feces

how to treat equine bots (2)

1. Removal of nits prior to hatching.

2. dewormer

how to prevent equine bots

none

what are the 2 types of bovine warbles

1. Hypoderma bovis

2. Hypoderma lineatum

what is it

bovine warbles

what do bovine warbles look like

bee-like

what is it

bovine warbles

do bovine warbles had a direct or indirect life cycle

direct

when bovine warbles Eggs hatch, larvae crawl down the — — and penetrate the —

hair shaft, skin

Hypoderma lineatum migrates along the …

esophagus

Hypoderma bovis migrates along the

spinal column.

why should you not treat bovine warbles when they are migrating (2)

can cause paralysis or respiratory failure.

how long is the prepatent period in bovine warbles

1 yrs

clinical signs of bovine warbles (2)

1. Lumps with air hole in the skin of the back.

2. Damaged hides at slaughter.

how to diagnose bovine warbles

Presence of warbles along the back

when should u not treat bovine warbles (2)

1. beginning of November

2. end of March

how to prevent bovine warbles (3)

1. Eradication of the fly

2. Fly ear tags

3. Cattle oilers with fly repellent

common name of cutaneous myiasis

Sheep Fly Strike

whats wrong

fly strike

whats wrong

fly strike

sheep with fecal and urine contamination of hind end may lead to —

flystrike

Sheep that have open wounds, infected areas of skin, or heavy fecal and urine contamination of the fleece are very prone to —

flystrike

is sheep flystrike is a direct or indirect life cycle

direct

clinical signs of sheep flystrike (9)

1. Rubbing or scratching butt up against pens/fences

2. Bare skin patches

3. tissue decay

4. Discolored wool

5. Sheep stops grazing

6. Maggots present over infected area

7. anemia

8. weakness

9. death

how to diagnose sheep flystrike (2)

1. Visually seeing maggots/flies

2. CBC

how to treat sheep flystrike (5)

1. Crutch sheep

2. Shear sheep

3. Physical removal of maggots

4. Cleanse area with Chlorhexidine/water

5. supportive treatment

what is the supportive treatment for sheep flystrike (3)

1. antibiotics

2. fluids

3. non-steroidal anti-inflammatories (NSAIDs)

how to prevent sheep flystrike (6)

1. internal parasite control

2. Shearing

3. crutching of fleece around the tail area

4. Docking of tails on lambs

5. Correct disposal of carcases

6. Ensure all wounds are treated promptly

what is it

New World Screwworm Fly

what is it

New World Screwworm Fly

clinical signs of New World Screwworm Fly (5)

1. Feeling or seeing maggots

2. Painful skin wounds or sores

3. A foul-smelling odor

4. Bleeding from open sores.

5. Bacterial infections

how to treat New World Screwworm Fly (3)

1. Remove larvae

2. meds

3. antibiotics

common name of Melophagus ovinus is

sheep keds

what is it

sheep keds

sheep keds aka

sheep tick

are sheep keds direct or indirect life cycle

direct

clinical signs of sheep keds (6)

1. Rubbing at wool

2. scratching at wool

3. biting at the wool.

4. Bare skin patches.

5. anemia

6. weakness.

how to diagnose sheep keds

see sheep keds on sheep

how to treat sheep keds (2)

1. shear sheep

2. dewormer

what is it (scientific - horse)

Haematopinus asini

what is it (scientific name - horse)

Damalinia equi

common name of Haematopinus asini

sucking lice

common name of Damalinia equi

biting lice

clinical signs of equine lice (8)

1. pruritic dermatitis

2. biting

3. rubbing

4. loss of hair.

5. secondary bacterial infections.

6. fiinding nits/lice

7. anemia

8. weakness.

are equine lice a direct or indirect life cycle

direct

how to diagnose equine lice

Lice and nits on hair (yellow)

how to treat equine lice

meds

The 3 most common lice found on cattle here are (scientific)

1. Damalinia bovis

2. Linognathus vituli

3. Haematopinus sp.

common name of Haematopinus sp.

large sucking louse

what is it (scientific name - cattle)

Haematopinus sp.

what is it (common name - cattle)

large sucking louse

common name of Linognathus vituli

sucking louse.

what is it (scientific - cattle)

Linognathus vituli

what is it (common name - cattle)

sucking louse.

common name of Damalinia bovis

biting louse.

what is it (scientific name - cattle)

Damalinia bovis

what is it (common name - cattle)

biting louse.

define pediculosis

lice infestation

are cattle lice a direct or indirect life cycle

direct

clinical signs of cattle lice (6)

1. Unthriftiness

2. pruritus

3. rubbing

4. hair loss

5. scab formation.

6. Anemia

how to diagnose cattle lice

Lice and nits on hair (yellow in color)

how to treat cattle lice (2)

1. meds

2. dewormer

how to prevent cattle lice

prevent overcrowding

define mange

mite infestation.

what are the 3 types of cattle mites

1. Sarcoptes sp.

2. Chorioptes spp.

3. Psoroptes sp.

what is it (scientific - cattle)

sarcoptes scabei

what is it (common name - cattle)

scabies mange

where do Sarcoptes scabei go on cattle

Mites burrow in the skin.

clinical signs of sarcoptes scabei (2)

1. Loss of hair.

2. Thick crusty wrinkled skin.

what is it (general scientific name - cattle)

Chorioptes spp.

where does Chorioptes spp. live on cattle (2)

1. limbs

2. tail

where does Chorioptes spp. live on sheep

feet

Chorioptes spp. scientific name of sheep

Chorioptes texanus

Chorioptes spp. scientific name of cattle and horses

Chorioptes bovis

common name of Chorioptes spp. on drafts

scratches

clinical signs of Chorioptes spp. (2ish)

1. Soft, raised, moist crumbly scabs

2. raw bloody skin beneath.

what is it (scientific name - sheep)

Psoroptes sp.

where do Psoroptes sp. live

skin

Psoroptes sp. is most common in what animal

sheep

clinical signs of Psoroptes sp.

Cause wool to fall off in sheets or strands

life cycle of ruminant mites is direct or indirect

direct

clinical signs of ruminant mites (4)

1. Hair loss

2. Pruritis

3. Scabby lesions

4. Inflammation.

how to diagnose ruminant mites

skin scrapings

how to treat ruminant mites

dewormer

how to prevent ruminant mites (5)

1. Good nutrition

2. Clean environment.

3. Prevent overcrowding.

4. trim horse feathers

5. keep horse feathers dry