194
Intoxications of Cattle by Sudan Grass
Details of poisoning of stock grazing on sudan grass—contd.
No.
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Date
10-12-37
28-12-37
24-12-37
5-1-38
4-1-38
7-1-38
10-1-38
...
10-1-38
25-1-38
26-1-38
10-2-38
15-1-38
10-2-38
March, 1938
12-4-38
6-5-38
Crop
Sudan grass and
hybrids
Sudan grass . .
Sudan grass . .
Sudan grass and sor-
ghaum.
Sudan grass . .
Sudan grass . .
Sudan grass . .
Sudan grass . .
Sudan grass . .
(1) Sudan
grass,
coarse type.
(2) Sudan
grass,
much finer than
above.
Johnston
grass
(Sorghum halapense)
Broom millet .
Sudan grass .
Ambercane
(Sor-
ghum sp)
Johnston grass (Sor-
ghum halapense)
Broorn millet .
Sccalien (Soruhum
caffrorum)
Condition
Eaten back by grass-
hoppers
Eaten back by grass-
hoppers. Re-growth
one foot to 18 inches
high. Not in seed
Crop eaten down by-
grasshoppers and re-
growth two feet high,
but not in seed
Eaten by grasshoppers
and re-growth scanty
and up to 12 inches
high
Eaten back by grass-
hoppers. Re-growth
sparse but vigorous
Eaten back by grass-
hoppers. Re-growth
sparse but vigorous
and out in flower
Eaten back by grass-
hoppers. Re-growth
12 inches and not yet
in flower
Eaten down by grass-
hoppers. Re-growth
12 inches high and in
seed
Eaten back by grass-
hoppers. Re-growth
18 inches high and not
yet in seed
Eaten back by grass-
hoppers. Re-growth
2 feet 4 inches high
and in seed
Not affected by grass-
hoppers. Also up in
seed
Eaten back by grass-
hoppers. A strip of
this perennial had beer
in the paddock for five
years without ill-
effects
Not known . .
Crop visited by grass-
hoppers
Not known . .
A contaminant in an-
other crop
Crop cut and re-growth
grazed three weeks
later
Cattle grazed on this
crop daily for some
weeks
HCN Content
Strong positive to pic-
rate test
Strong positive to pic-
rate test
Positive to picrate test
Both strong positive to
picrate test
Strong positive to pic-
rate test
Strong positive to pic-
rate test
...
Strong positive to pic-
rate test
Strong positive to pic-
rate test
0.024% . . .
0.006% . . .
Strong positive to pic-
rate test
Strong positive to pic-
rate test
Strong positive to
Picrate test
Strong positive to pic-
rate test
0.069% . . .
Strong positive to pic-
rate test
Strong positive to pic-
rate test
Results
5 cows. All showed
symptoms in 10
minutes. No deaths
45 cows. 5 became
sick and recovered
56 cows. 3 dead 5 sick
and recovered
4 cows. 3 sick and all
recovered
18 cows, of which 13
died. Symptoms in
15 minutes
1 cow died at first
attempt to graze crop.
3 died at a second
attempt two weeks
later
80 cows. 1 died, 8
recovered after treat-
ment
60 cows. 6 died in first
attempt to graze. At
second attempt 10
days later 3 more died
and 3 recovered.
2 cows became affected
and both recovered
27 cows. 4 deaths. 8
recovered
27 cows grazed with
impunity
300 sheep. Within an
hour 9 died and 8
which sickened re-
covered
16 cows broke into this
crop and 7 died before
they could be chased
out
12 cows. 4 died and 5
recovered
without
treatment.
14 cows put on a quar-
ter of an acre and all
died
45 cows. 11 deaths.
7 recoveries.
40 cattle. 2 deaths.
45 cows. 11 sick and all
recovered
Remarks
Treatment first adopted
of 3 grammes sod.
nitrate, 15 grammes
sod., thiosulph., 20 ml.
water with astonishing
results
The 5 sick cows were
treated as (20) above
The 5 sick cows were
treated as for (20) with
also artificial respira-
tion
Sick ones relieved by
puncturing
rumen
with trocar and canula
The 8 recoveries were
treated as for (20)
The 3 recovered cases
were treated as for (20)
Treated as in (20)
5 treated as in (20). 1
died from the treat-
ment owing to 25%
increase in the dose.
This crop was fed on
and when finished crop
adjoining was used.
No treatment.
4 recovered without
treatment and 7 with
treatment