Fish hâîv'èënÿ in pond
3:13
1.5—2.0
m3 plastic tanks can be us 6
long—distance—transp0rt;
oxygen—filled plæStic bags
100—150.000
early
fry can be
carried
in
20
liters
of
water
(Horvath and Tamas,
1981).
Nursed
fry
(70.000—150.000 per m3 of water) can be trahëp0rted for several
hours
in
1.5—2.0
m3
plasticftanks;œTanks of
are
of
reinforced
plastic or metal
;
these
are
used
for
larger fish and have a
Compre85ed air Or oxygen Supply. Within the farm, even openïtanks can be
used
;
for
longer
closed tanks sh0uld need to
prevent
the
water
from
splashing and injuring the fish.
Oxygen supply is
very important in this case and Can be SUpplied by oxygen cylinders, but li—
quid oxygen has been used recently.
'
Double—walled
tanks
with
insulation
transport because an optimal temperature Of
can
be maintained for'l©ger.
The
temperature can be lowered by putting ice into the tank. To decrease the
metabolic
activity ofvthe fish during transp0rt; MS 222
A guide
for
5
of
carp
and'herbivores has been recently published
by Tolg (Horvath et al., 1984).
‘
.…'
-'
*
?
Nursed
fry from Hungary are currently flOwn to the Middle
Latin
America and Asia.
However,'reCently 400 Spawners were traÙSported 4000 km by
air
from
were
put
into
individual
oxygen—filled plastic bags With & water—oxygen ratio of 1:2.
also
recovered
in
several
minutes
;
and
Tarnai,
1983).
.
,
.
.
CONCLUSION
«i
,
'
‘
f
farms that Was
adapted from
capture
;
…
œnwï
3
effective utilizatibh of fish harvesting equipment is determined by
the type and physical c0ndition of the fish pond to be
First of
all,
the
pond must be
completely drained, have
catch—
basin and a hard—top road and, as far
&
built—in electric power
line
Although different hàrvesting equipment has been used for years with
satisfact0rywresults-in pond fish:farms, more research and technical deve—
'
lopment should be
devoted
to
the
mechanization
of
harvesting in order to
dEVelop special equipment and harvesting Systems in accordance with the spe—
'
Cific needs of carp and other polyculture species and to optimize the opera—
tion of the harvesting process.
ï
‘
‘
’
“?
“
REFERENCES
'
-:
“
'
‘
‘
*"
‘
”“
W KaposWôlgy1 @. ; 1982. _ The development—of & hydraulioWinc‘h fo—r'
sèihïhg With the support of Technical Development Fund. /in Hungarian/
Halaszat XXVIII.5,
138.
Gâradi Pu, Tarnai
transportation Of spawners fr0m Szäzhalom—
Iran; /in Hungarian/Halaszat XXIX. 3, 82—84—‘
Greenland
in
nhanding pond raised catfish. Trans. Am.
AgriC\
MH
{
…
\
\