SATIATION AND DIGESTION RATE OF MANGROVE SNAPPER FINGERLING (Lutjanus argentimaculatus)
Abstract: Mangrove snapper is
an economically value in domestic as well overseas market, but supplies are
mostly sourced from the wild. Observations on satiation and digestion rate of
fingerlings was undertaken to provide basic information for culturing mangrove
snapper. Ten fingerling mangrove snapper (body weight 3.8—19.5 g) were stocked
into each of nine plastic 200 L tanks. After starvation for 24 hours, fish were
fed with chopped ‘trash’ fish and the amount of eaten feed was record as
satiation data. Feeding data was recorded after 4 hours feeding. The satiation
rate for juvenile mangrove snapper followed the power regression line
Y=0.4503x-0.6472. Thus, in larger juveniles the satiation rate was lower.
Digestion rate followed a polynomial regression line, indicating that digestive
activity was not the same during observation time, and analysis of two linear
regressions shown that the flection point for digestion rate occurring after 10
hours when digestion rate reached 72%. These results indicate that the optimum
feeding rate for mangrove snapper fingerling was 72% of satiation, and optimum
feeding frequency two times per day.
Keywords: satiation;
digestion; mangrove snapper
Author: Made Suastika, Philip
Teguh Imanto
Journal Code: jpperikanangg070011
