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Liver fluke J
uly
to
Decem
ber
Acute Infection
Sudden death
Internal bleeding
Liver damage
Immature fluke
FEC -0
Octo
be
r to
Jan
uary
Sub acute Infection
Rapid weight loss
Anaemia
Adult and immature fluke
FEC <100
Jan
ua
ry t
o A
pri
l
Chronic Infection
Progressive weight loss
Brittle fleece
Adult fluke
FEC >100
Treatment and control
Type of treatment depends on
infection
Treat and move to lower risk
pasture
All fasciolicides are active
against the mature fluke in
chronic infection but only
some target immature fluke