This study aimed at evaluating the productivity of common carp (Cyprinus carpio L.)
farmed in the floating-cages in the 16 Tishreen Dam between 1995 and 2004. The results
showed that the feed amount was about (5000 tons) in 1998, while it was about
(370 tons)
in 1995. The proportion of protein reached 33.71% in 2000 and 28% in 1996. The number
of carp fingerlings was 283000 in 4440 and 200550 in 1999. The fingerlings intensity in
the cage was 115.387 fingerlings / m³ in 1995 and 90.355 fingerlings / m³ in 2003. The
results also showed that the studied farm was not profitable in 1995 and 1998 because of
fish over-wintering, while it was in the remaining years. These results indicate that the
studied farm has successfully overcomed many of the problems and it was gainful in many
years. However, the main aim of the studied farm is providing the local market by
freshwater fish and offering many job opportunities.
This research aimed to study the effect of adding different rates of lysine on the weight and
growth of common carp fingerlings. The experiment was carried out in the laboratory for 4
months using eight glass containers (40 liters each) with four t
reatments (L0 no Lysine
addition, L1 (2%), L2 (3%), L3(4%) of the total weight of diet. Eight common carp
fingerlings (average of tall 7.5cm ± 0.05 and average of weight 12.25g ± 0.57) were
cultured in each container with Oxygen pumps and filters.
Results showed by growth rate, absolute growth rate, specific growth rate and food
conversion ratio (FCR) that the treatment L1 (2% lysine) was significantly the best
comparing to the other treatments, where FCR was (2.2) and the specific growth ratio was
(0.28 %)
