cattle diagnostics Flashcards
fwec samples
fresh
3 areas of pat
40g
store below 4c
routine monitoring - 10 animals
modified mcmaster
floatation solution added
10x lens
total eggs in grid x50
strongyles
baerrmans
feces in funnel with warm water - leave few hours
larvae sink
collect and count
lungworm
mastitis testing
culture
CMT - more gel like more mastitis
visual milk examination - colour, consistency, clots, smell
somatic cell count - high count greater chance of infection
bulk milk tank testing
bacterial culture
somatic cell count
infectious disease -m PCR or ELISA - BVD, IBR, Brucella, lepto, johnes, tb, salmonella, schmallenberg, salmonella, neospora, liver fluke
pm samples - eyes
vitreous humour - magnesium and calcium
pm samples - lungs
lungworm
froth - heart failure or hypoprotenemia (parasites or malnutrition)
fixed lung sample in formalin
float in water - aerated
pm samples - heart
both ventricular walls fixed in formalin
pm samples - liver
fresh sample for biochem
vitamin e and selenium testing
pm samples - intestines
duodenum and jejunum - fixed in formalin
parasite burden
ileum - fixed in formalin
johnes, salmonella
ileal contents - bacterial culture, enterotoxemia, ELISA
pm samples - abomasum
hemonchus
fixed in formalin
pm samples - rumen
rumen ph testing - 5.5-7
poisonous plant leaves
fixed in formalin
pm samples - omasum and reticulum
fixed in formalin
pm samples - kidney
lead or copper toxicity
formalin
pm samples - muscle
hindlimbs - fresh samples
pallor - nutritional myopathy
pm samples - lymph nodes
bTb PCR
