Effect of ripe papaya pulp powder on fin colouration of Tiger Oscar fish, Astronotus ocellatus

Résumé fourni par la source

The presence of carotenoids, which activate fish colouring, is a major factor in the market value of ornamental fish. The goal of the current feeding experiment was to determine how papaya pulp powder meal affected the fin colouring of Tiger Oscar, Astronotus ocellatus. In a confined setting, papaya pulp powder was added to five different experimental diets in different amounts (C- 0g/100g, T1- 1g/100g, T2- 2g/100 g, T3- 3g/100 g, T4- 4g/100 g, and T5- 5g/100 g). Eighteen glass aquaria (L 60 cm x W 30 cm x H 30 cm) were randomly filled with fifteen fish each tank. The experiment was conducted in triplicate for 90 days. The feed was given at 2% of body weight with equal split doze at 09:00 and 17:00 hours. To maintain a healthy state, any uneaten food and waste were syphoned out on daily basis and water was replaced with fresh water at a rate of 10% to 15% every three days. The carotenoid level variation was observed at 380, 450, 475 and 500 nm wavelength. Following the experiment, it was observed that all five treatments had considerably higher total carotenoid concentrations (TCC) in the fin of Tiger Oscar at 90 days than the control group (p<0.05). From this experiement, it can be concluded that Tiger Oscar’s fin coloration was significantly higher (p<0.05) in T3 group i.e. 3 g/100 g of papaya pulp powder to their diet.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.