Addition different algae (Spirulina) flour to artificial feed on color quality and growth of Koi fish (Cyprinus carpio-Koi)

Abstract

Abstrak Ornamental fish is one of the fisheries commodities that can be used as a source of foreign exchange income, and has its own beauty to attract the interest of ornamental fish lovers. One of the things that determines beauty in many species of ornamental fish is color. Color is a parameter to determine the value of ornamental fish, which is a brighter color, the higher the value of fish. Spirulina sp. Flour has a high carotenoid and protein content, each of which plays a role in increasing color intensity and growth. The purpose of this study was to determine the effect of concentration Spirulina flour to the color quality and growth of koi fish (Cyprinus carpio). The method used was experimental with Completely Randomized Design (CRD) using 4 treatments 5 replications. The dose of feed used is (Control), (dose 1%), (dose 3%) and (dose 5%), Color quality measurement using Adobe Photoshop CS8 software. The frequency of twice-daily feeding for each treatment resulted in color quality with the best value (3.0200%), absolute length growth (0.9780 cm) and absolute weight growth (3.7240 grams).

The effects of Chaetoceros sp. meal as a feed supplement on color expression, growth performance and survival rate of discus (Symphysodon discus)

“…Nevertheless, the synthesis of carotenoids cannot be directly performed by fish [10][11][12]. Fish must obtain optimal levels of carotenoids in the feed to improve their skin color [10,13,14]. The method commonly used by ornamental fish cultivators is to provide natural food such as Tubifex worms, Bloodworms, and Moina sp to accelerate growth and brighten colors [15].…”

Increased Color Brightness with the Addition of Astaxanthin in Koi Fish (Cyprinus Rubrofuscus) Feed

“…The selling price of koi fish continues to increase, and the price classification is very varied. The main factors determining the price of koi fish are beautiful colour patterns and exotic body shapes, beautiful body shapes and movements, as well as very lucrative economic value, causing koi fish to continue to be studied both from the aspect of feed nutrition and a genetic standpoint (Simbolon, et al, 2002).…”

“…The colour of koi fish is related to the number and location of pigment cells (chromatophores) in the dermis layer. It is said by (Simbolon et al, 2002) that the body colour of the fish is caused by the availability of carotene from natural food, while the fish that are reared get their carotene source from artificial feed.…”

Spirulina (Arthrospira platensis) als alternative Proteinquelle für Fische

“…und Scenedesmus obliquus . Zurzeit werden Algenmehle überwiegend in kommerziellen Diäten von Zierfischen genutzt, da sie die Hautpigmentierung und damit die Farbgebung des Schuppenkleids verstärken können (Bakshi et al 2018;Sudirman et al 2020). Aufgrund der gegenwärtig hohen Produktionskosten werden Algen kaum in kommerziellen Diäten für Nutzfische eingesetzt, dabei bieten Mikroalgen eine hochwertige Proteinquelle.…”