Sheep - Parasites Flashcards
(21 cards)
common endoparasites
nematodirus
ostertagia
hemonchus
liver fluke
lungworm
tapeworm
coccidia
common ectoparasites
flies - flystrike
mites - cause sheep scab and can cause foot rot
lice
ticks - transfer tick borne disease
roundworm signs
diarrhoea
bcs loss
excessive drinking
hemonchus - anemia and bottle jaw
lambs -parasitic gastroenteritis
roundworm risk factors
lambs on pastures grazed by sheep the previous season
cold snaps followed by sudden warmer weather
age
stress
concurrent infection or impaired immunity
SCOPS forecase
roundworm diagnosis
FEC
serology for specific type
post mortem - worms in intestinal tract, scarring
liver fluke signs
diarhoea
bcs loss
mild jaundice (sometimes)
inappetance
depression
lambs - inappetence, weakness, sudden death
liver fluke risk factors
pasture management - not rotating grazing
snails
water sources
lambs on pasture grazed by sheep recently
improper anthelmintic utilisation
liver fluke diagnosis
pm - enlarged liver, adult fluke in gall bladder and bile ducts,
FEC - depends it shedding
serum ELISA - only good before exposed and acquired immunity
liver fluke treatment
anthelmintics late spring/early summer
fly strike risk factors
hot weather
moisture
soiled fleece
open wounds
over grazing - build up of manure
fly strike treatment
treat sores on skin
clean fleece
ectoparasiticides
remove any maggots
sheep scab signs
scratching against fences
wool loss
lethargy and depression
intensely itchy - mite
sheep scab risk factors/prevention
new sheep added to flock
borders with neighbouring farms
biosecurity
sheep scab treatment
organophosphate dips
monitor effectiveness of treatment and report treatment failures
sheep scab notifiable disease status
notifiable in scotland - alert APHA, do not move affected sheep off farm, have to treat
parasites in lambs prevention
lambing pen hygiene
pasture management
clean water
good nutrition for good immunity
bioactive crops
longer grass better for prevention
cull repeatedly affected
prevention - environment
longer grass
pasture management
fence off water
secure barriers between neighbouring farms
manure management
bioactive crops
feed and water biosecurity
control other vector hosts
prevention - anthelmintics
right animal
right dose
right product
FWEC and reduction count to monitor affectiveness
prevention - ectoparasites
ventilation in barns
ectoparasiticides - ear tags, drenches, sprays
fly masks
secure borders
fence off water sources
treat open wounds
keep fleeces clean
don’t overgraze fields
prevention - common vector hosts
snails - liver fluke
culicoides midges - blue tongue
ticks - babesiosis
cats - toxoplasma gondii
