Page 984 - Veterinary Toxicology, Basic and Clinical Principles, 3rd Edition

toxicity
with
with
fern
Diseases
disease
fern
(rock)
Association
Bracken
Similar
Other
mulga
sheep
and
(bright
hematuria
marrow
sheep
polioencephalomalacia;
fern
progressive
and
sheep
anemia,
bracken
thrombocytopenia,
cattle
in
and
immunotoxicity;
bone
cancer
(chronic
in
neutropenia,
Toxidrome
in
retinopathy
in
syndrome);
Resembles
Depressed
blindness)
functions
resulting
bladder
toxicity
cattle
days
cattle
drought
less
do
feeding;
very
for
avoided
of
most
poisoning
until
symptoms
sheep
required
weeks
later;
after
are
Factors
in
horses
appear
protracted
Rhizomes
Generally
eaten
develops
weeks
affected,
2 4
toxicity
intake
toxic;
often
Risk
and
not
but
so;
or
soils
with
in
Distribution
well-drained
Throughout
particularly
states;
areas
Australia
wet
All
(particularly is there when periods available; else little is ingestion low-level is much too but safe, fern- dangerous; paddocks infested safely grazed be can moved are animals if and days B10 after fern-free in rested weeks B3 for areas of causes Other Typical highest levels Toxin in areas; Inland polioencephalomalacia polioencephalomalacia in lowest summer, in or depressions other sulfur); dietary (e.g., ruminants; in toxidrome grazed often winter; subject flats river thiaminase of
Toxins Thiaminase; ptaquiloside; norsequiterpene glucocides Thiaminase; norsequiterpine glucocides ptaquiloside) Thiaminase; norsequiterpine glucosides
deficiency polioencephalomalacia; in blindness chronic in syndrome anemia/ mutagenic carcinogenic fern bracken deficiency polioencephalomalacia; nonresponsive bone to depletion; mutagenic/carcinogenic; (human)
Diseases Thiamine bright sheep; hematuria ruminants; immunodeficiency; chronic neutropenia; and per As Thiamine chronic due anemia marrow immunotoxic; beriberi
esculentum sp. drummondii herb; or rhizome; slender four with leaflets surface, the and land dry four-leaf
and Identification fern, creeping a have tipped wedge-shaped on float on spread a like
(Continued) Species Pteridium Cheilanthes Marsilea water A short leaves stalk that or look clover
63.2 of fern in chronic in fern fern in
TABLE Common VetBooks.ir Name Disease Austral bracken poisoning; bright blindness sheep; hematuria syndrome ruminants Mulga poisoning Rock poisoning; blindness sheep Nardoo poisoning