‘
Poster suMmaries
—405
OBSERVATÎONS ON SURVIVAL, GROWTH, PRODUCTION AND…ECOSYSIEM_1N MIXED CYPRINID
,SPECIES CULTURE IN CONCRETE FONDS IN IRAQ. N. A.”SALMÀN,
giea£ Seieneez», Univ…üy 05 Dundee, Dundee 1791 j4HN,fSCOTLAND.
‘
Common, golden and mirror carp were reared in concrete ponds of 225—575 m in
area and 1.5—2.0 m deep_in Basrah, Iraq. Big fingerlings ranged in weight
from 34.0 to 52.2 g and small fingerlings
weight were used
study. The farm was fed with fresh water côming from a side branch
canal of Shatt Al—Arab river by pumping. The flOw raté was not constant. It
from a high rate of 10—12 litres per minute When high water tèmperatu—
low oxygen levels were detected to low level of
per minuté
_
during normal conditions. Aeration devices were used during summ€r monthstemperature franged from 14.8°C tO 29.0°C_Dissolved oxygen varied het—
ween
6.7—9.0 mg/l. Clorosity averaged 0.6 g/l While total alkalinity ranged
,from 107 to
131 mg/l. Natural productivity was not measured during this Stu—
although some zoo and phytoplankton species were fôuhd in the stomach of
all cultured species. Due to the lack of natural fOod Cycle and high'Water
inflow in our concrete ponds, two types of supplemetary fOOd were used. They
consist mainly of soyabean cake, ground harley, wheat
Tice bran,
meal, corn grain, calcium phosphate and
were fed six
days a week at the rate of 5% of
during sumer and 32 during
winter. The survival rate was high (averaged 99.82)pduridg
period. Very few mortalities occurred among
fingërling$
_
(11.12) and mirror (5.9Z) carp. Seasonal variatiôns"Of'growth in length and
weight of all species were recorded. Maximum daily increments of 1.0,0.7 and
0.4 g were noticed for common, mirror
summer. The production reached 9d1 Kg/ha
POSSIBLE STEPS FOR DEVELOPING
K‘P'_
SHA‘RMA, F4'z3he/uéez3 Su/wey,
-
315001, INDIA,
,_
;_
Republic of Iraq has
‘. lakes
,
marshes ;] ..pdndsï awld ,tLhie' Gulf
1nland
than 20,000 km2 The
T}‘$ï?$
the country by
8hàttrAl—Arab at Qur‘na‘ ’andÿ nallyreachmgthe ArabiaDGulfatFa° The
-
iwp0ïtant lakes are
ya. Resides them
.…
2ÏQO‘;hà. ‘The coastal
,
…
‘ : Ab … .: The paypnpthpwlpltVtd
in pOnds throughOut the
being used to evaluate
m°
“
e.
1 _
Barbus grypus, B.
PreÊenîhëî âe
fish productioniin the
raised
about 1.200 000
Intenswe ls
,
culture
”ad tivi
cohéïë‘g‘" of several components
fish culture, acquisition of
preparation of
€ ff
ë,
_
s
For undertakl ngvarlouS ==a SP“e
ets e°Deîelo m:e f
development 1t1spropœ ed toset @ aFlSheme“C°°äemüÏ…ngreËresenœ—
» «Pïéàni'sati‘on‘ (FC“DQ)‘1Ï$ÆîÇHhu1dbmngdbyaBr“‘Pthmnt— parti-—
t1ves wamf the GovernmentStateFlshlngC°mpanyFlheÏäeÊeorg…sedmto
ed with hth pptnffhbdng ggtu … th
’
smeñt of
distribution and field liaisonv
Poster suMmaries
—405
OBSERVATÎONS ON SURVIVAL, GROWTH, PRODUCTION AND…ECOSYSIEM_1N MIXED CYPRINID
,SPECIES CULTURE IN CONCRETE FONDS IN IRAQ. N. A.”SALMÀN,
giea£ Seieneez», Univ…üy 05 Dundee, Dundee 1791 j4HN,fSCOTLAND.
‘
Common, golden and mirror carp were reared in concrete ponds of 225—575 m in
area and 1.5—2.0 m deep_in Basrah, Iraq. Big fingerlings ranged in weight
from 34.0 to 52.2 g and small fingerlings
weight were used
study. The farm was fed with fresh water côming from a side branch
canal of Shatt Al—Arab river by pumping. The flOw raté was not constant. It
from a high rate of 10—12 litres per minute When high water tèmperatu—
low oxygen levels were detected to low level of
per minuté
_
during normal conditions. Aeration devices were used during summ€r monthstemperature franged from 14.8°C tO 29.0°C_Dissolved oxygen varied het—
ween
6.7—9.0 mg/l. Clorosity averaged 0.6 g/l While total alkalinity ranged
,from 107 to
131 mg/l. Natural productivity was not measured during this Stu—
although some zoo and phytoplankton species were fôuhd in the stomach of
all cultured species. Due to the lack of natural fOod Cycle and high'Water
inflow in our concrete ponds, two types of supplemetary fOOd were used. They
consist mainly of soyabean cake, ground harley, wheat
Tice bran,
meal, corn grain, calcium phosphate and
were fed six
days a week at the rate of 5% of
during sumer and 32 during
winter. The survival rate was high (averaged 99.82)pduridg
period. Very few mortalities occurred among
fingërling$
_
(11.12) and mirror (5.9Z) carp. Seasonal variatiôns"Of'growth in length and
weight of all species were recorded. Maximum daily increments of 1.0,0.7 and
0.4 g were noticed for common, mirror
summer. The production reached 9d1 Kg/ha
POSSIBLE STEPS FOR DEVELOPING
K‘P'_
SHA‘RMA, F4'z3he/uéez3 Su/wey,
-
315001, INDIA,
,_
;_
Republic of Iraq has
‘. lakes
,
marshes ;] ..pdndsï awld ,tLhie' Gulf
1nland
than 20,000 km2 The
T}‘$ï?$
the country by
8hàttrAl—Arab at Qur‘na‘ ’andÿ nallyreachmgthe ArabiaDGulfatFa° The
-
iwp0ïtant lakes are
ya. Resides them
.…
2ÏQO‘;hà. ‘The coastal
,
…
‘ : Ab … .: The paypnpthpwlpltVtd
in pOnds throughOut the
being used to evaluate
m°
“
e.
1 _
Barbus grypus, B.
PreÊenîhëî âe
fish productioniin the
raised
about 1.200 000
Intenswe ls
,
culture
”ad tivi
cohéïë‘g‘" of several components
fish culture, acquisition of
preparation of
€ ff
ë,
_
s
For undertakl ngvarlouS ==a SP“e
ets e°Deîelo m:e f
development 1t1spropœ ed toset @ aFlSheme“C°°äemüÏ…ngreËresenœ—
» «Pïéàni'sati‘on‘ (FC“DQ)‘1Ï$ÆîÇHhu1dbmngdbyaBr“‘Pthmnt— parti-—
t1ves wamf the GovernmentStateFlshlngC°mpanyFlheÏäeÊeorg…sedmto
ed with hth pptnffhbdng ggtu … th
’
smeñt of
distribution and field liaisonv