Pemanfaatan Tanaman Krokot (Pertulaca oleracea L) untuk Menginduksi Molting Pada Induk Udang Windu (Penaeus monodon. Fab) di Hatchery
Emma Suryati dan A. Tenriulo 2013

Abstract
Pertulaca oleracea L is a plant commonly found in coastal areas or on the dike around the pond. Reported that this plant contains ecdysteron that can be utilized in accelerating the process of molting in shrimp broodstock at the hatchery. In addition to the ablation process of molting in shrimp can be induced via the addition of 20-hydroksi ecdysteron (20 E) on hemolym so premolting phase can be adjusted according to need. Ecdysteron generally found in crustaceans that exist both on land and in the water that are like crabs, shrimps and other crustaceans that are found naturally and serves as a regulator of skin replacement process and control the formation of the new exoskeleton to replace the old exoskeleton known as molting . In the seed business in the black tiger shrimp hatchery broodstock of shrimp required by gonadal maturity of the balance between male and female parent so that the process can be done with good reproduction. One effort to avoid cutting or ablation of the eye stalk in this research applications krokot ( Pertulaca oleracea L) use of plant extracts to induce molting in broodstock of tiger prawn, Ecdysteron in plants can be obtained through extraction and fractionation using several organic solvents, followed by the determination of the structure and applications performed by injection of crude extract in black tiger shrimp broodstock with doses of 0, 10, 20, 30, and 40 mg/L to determine the most appropriate dose to stimulate the occurrence of molting on the broodstock of shrimp. The results include the highest ecdysteron extracts obtained from fraction 3 obtained 720 mg/L and the lowest in fraction 2 is 385 mg/L. Results induction of molting in shrimp broodstock showed the most optimum dose study was conducted using designs completely randomized design (CRD).