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

Efrizal Efrizal,Zuhri Syam,Suryati Suryati,Rusnam Rusnam

doi:10.12688/f1000research.20029.1

Abstract

Background: Formulated diets made from food waste enriched with amaranth extract largely determine the level of softshell crab production. The study was carried out to analyze the growth performance and survival rate of blue swimming crab Portunus pelagicus (Linnaeus, 1758) broodstock females fed formulated diets with different doses of amaranth extracts. Methods: The female crab samples were collected from the coastal region of Padang, West Sumatra. The method used in this study was a completely randomized design, with four treatments and five replications of amaranth extract-enriched diets (0, 250, 500, and 750 ng/g crab). Results: The results show that the enrichment of the formulated diet with amaranth extracts significantly affected (P < 0.05) the absolute weight gain (AWG), carapace length (ACL), and carapace width (ACW). Conclusions: A quadratic relationship existed between the amaranth extract dose in the formulated diet and the AWG, ACL and ACW.

Highlights

The waters of the province of West Sumatra provide a water marine area that includes the Indonesian Exclusive Economic Zone, which encompasses approximately 186,580 km[2], with a long coastline of 2420.387 km, and provides habitat for many biological natural resources[1]
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 20021, whereas in the period 2007–2009 reports on the Indonesian market share of crab decreased from 17.6% to 16.3%9
Absolute weight gain The growth measure of absolute weight is a measure of the weight difference observed in a female crab for a certain time when weighed at the beginning and end of the period

Summary

Introduction

The waters of the province of West Sumatra provide a water marine area that includes the Indonesian Exclusive Economic Zone, which encompasses approximately 186,580 km[2], with a long coastline of 2420.387 km, and provides habitat for many biological natural resources[1]. This marine area, when used wisely, from planning to the administration, implementation, and supervision, will support the welfare of people along the coast in general and the coast of Indonesia in particular. Conclusions: A quadratic relationship existed between the amaranth extract dose in the formulated diet and the AWG, ACL and ACW

Methods

Results

Discussion

Conclusion