This study was conducted
to determine effects of shrimp waste meal as natural chitin
source at different rates (0 (control), 10, 20, 30 and 40% ) on
growth, feed conversion ratio (FCR), survival of youngcrayfish (1.61±0.04 g and 3.74±0.03 cm) for 60 days. Fifteen glass aquariums (70x30x40
cm) were used in the experiment and 20 individuals were stocked per
aquarium (95/m2). The
highest of
finalweight and weight gain were obtained in feed with 10% shrimp waste meal group (3.29±0.23
and 1.66±0.23
g), while the lowest of finalweight and weight gain was obtained in
fed with 40% shrimp waste meal group (2.75±0.35 and 1.18±0.37
g), respectively. However, non-significant
differences were found between
finalweight, weight gain, specific growth rate,
final total length, feed conversion ratio, survival percentage among
groups at the end of experimental period. It
was concluded that shrimp waste meal as natural chitin source can be used in
young crayfish diets up to 40% without adverse effect influence on growth.