THE USE OF SEAWORM MEAL IN MATURATION DIET AS PARTIAL SUBSTITUTION OF FRESH DIET FOR POND REARED TIGER SHRIMP BROODSTOCK
Abstract: The purpose of this
experiment was to evaluate the effects of using seaworm meal in artificial diet
as partial substitution of freshfeed for maturation of tiger shrimp. This
experiment started by growing-out tiger shrimp with initial weight around 60 g
for four months until reaching maturation phase where shrimp weight were over
90 g for female. Tiger shrimp was selected and stocked into 10 ton concrete
tank with stocking density of 50 shrimps with ratio of female : male of 1:1.
Dietary treatments were different levels of seaworm meal at 0% (SW0), 10%
(SW10) and 20% (SW20). SW0 was positive control without seaworm meal but
breeder was fed with frozen seaworm. Test diets were fed as a combination of
60% test pellet and 40% fresh feed. Artificial insemination was carried out for
all females before ablation to obtain fertile eggs. Results showed that after
ablation, number of female matured was highest in group fed SW10 (13 breeders)
and the lowest in female fed control group (7 breeders). Number of female
spawned was also highest in female fed SW10 and the lowest was in positive
control. Fecundity was very low in all treatments ranged from 12,000-79,700
eggs/spawn. Even though female bearing spermatophore through insemination,
number of spawning hatched was very low, only three spawned in each of SW0 and
SW10 and two spawned in SW20. Based on number of breeders matured and spawning
rate, breeder fed with SW10 gave better performance than other two diets.
Technique of artificial insemination needs to be improved to increase the
number of fertile eggs.
Keywords: polychaeta;
maturation; pond-reared tiger shrimpa
Author: Asda Laining, Usman
Usman, Rachman Syah
Journal Code: jpperikanangg140050
