Studies on Biological Test of Formulated Diets Supplementation of Vitamin E for the Broodstock of Females Blue Swimming Crab, Portunus pelagicus (Linnaeus, 1758)

Abstract

Background: Currently, great progress in the artificial propagation of commercially important portunid crabs of the genus Portunus has been achieved, and various methods have been adopted in mass-scale hatchery activities. This study analyzed the biological testing of formulated diets with different dose supplementations of vitamin E for the broodstock of female blue swimming crabs, P. pelagicus (Linnaeus, 1758) Methods: Female crab samples were collected from the coastal region of Padang, West Sumatra. The method used in this study was completely randomized design, with four treatment regimens (n=5 crabs each) of dietary vitamin E (0, 300, 600, and 900 IU/kg formulated diets). Results: The results show that the supplementation of vitamin E in the formulated diet had a significant effect (P <0.05) on the absolute weight growth, carapace length and carapace width. Conclusions: Supplementation of vitamin E on in formulated diet causes broodstock blue swimming crab molting, with a percentage value of 40–80% on day 20 and 20% on day 30, with a 100% survival rate.

Observation of behavior and daily activity of the mud crab, Scylla serrate (Forskal, 1775) under control condition

“…Besides, to ensure market stability for local and global production, a reliable and stable production amount is one of the main requirements. The most important is the basic knowledge of behavior patterns such as daily and reproductive activities used as an intensive development of mud crab cultivation under control conditions (Efrizal et al, 2018).…”

Growth performance and survival rate of Portunus pelagicus (Linnaeus, 1758) broodstock females fed varying doses of amaranth extracts

“…The female crab samples were collected from the coastal region of Padang (100° 22'12" BT, 1° 0' 54" LS dan 100° 25'58,8" BT, 1° 4' 40,8" LS), West Sumatra, and the crabs were placed randomly in four concrete tanks (200 cm × 100 cm × 100 cm), each divided into five units, i.e., plastic boxes (45.5 cm × 32.5 cm × 16.5 cm), where the crabs were held at a maximum density of one crab per box. Tanks were provided with approximately a 15-cm-thick layer of sand for substrate and with adequate aeration 2,7,8,[26][27][28] . The crabs were maintained in monitored water with a water depth of 25 to 30 cm, salinity of 30 to 32 ppt, pH 7.77 to 7.96, temperature 26 to 27°C, and dissolved oxygen (DO) 7.00 to 7.30 ppm.…”

“…The crab (Portunus pelagicus) belongs to the Portunidae family, is a marine biota resource. It has great potential to become an important fishery export commodity [2][3][4][5][6] , since in recent years, domestic and international demand has increased from year to year 7,8 . According to data from the last ten years for the period 1993-2002, the export volume of crabs increased by an average of 16.72% per year, from 6,081 tons in 1993 to 11,246 tons in 2002 1 , whereas in the period 2007-2009 reports on the Indonesian market share of crab decreased from 17.6% to 16.3% 9 .…”

“…The business of crab farming is still in its early phase in Indonesia and in many countries in the world 17 . Some researchers have reported that a low growth performance and the survival rate remain as problems in culture of the blue swimming crab 17 , which is caused by various factors, such as disease [18][19][20] , molting syndrome 21 , cannibalism 22 , and feed 3, 7,8 . Feed is the main component needed by the crab to survive and grow.…”

Studies on Biological Test of Formulated Diets Supplementation of Vitamin E for the Broodstock of Females Blue Swimming Crab, Portunus pelagicus (Linnaeus, 1758)

“…DOI: https://doi.org/10.5256/f1000research.15885. d221868 44 . The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.…”