Vitamin C requirement of adult genetically improved farmed tilapia, Oreochromis niloticus

Abstract

A 10-week growth experiment was performed to determine the vitamin C requirement of adult genetically improved farmed tilapia (GIFT), Oreochromis niloticus. Fish with an initial body weight of 220.06 ± 6.10 g were cultured in cages (20 fish per cage) and fed semi-purified diets containing different levels of vitamin C: 10.22 (control diet), 27.81, 48.49, 95.79, 187.66, and 382.54 mg vitamin C kg -1 . L-gulonolactone oxidase (GLO) was not detected in kidney or liver of tilapia. The weight gain (WG) of the 48.49, 95.79, 187.66, and 382.54 mg kg -1 groups was significantly higher than that of the control group. Feed efficiency and body composition of tilapia were not significantly different among the groups (P [ 0.05). The vitamin C contents in liver and muscle increased at the beginning and reached a plateau at C187.66 mg kg -1 . Regression analyses revealed that the vitamin C requirement of adult GIFT is 53.05, 180.53, and 185.86 mg kg -1 based on WG, hepatic, and muscle vitamin C content, respectively.

Ascorbic Acid Regulates the Immunity, Anti-Oxidation and Apoptosis in Abalone Haliotis discus hannai Ino

“…The recommended amount of dietary AA ranges from 10 to 10,000 mg/kg [ 21 ]. The minimum requirement of dietary AA to support the maximum growth rate (WG) was 53–186 mg/kg in Nile tilapia ( Oreochromis niloticus ), 1200 mg/kg in Pacific bluefin tuna ( Thunnus orientalis ) and 5000–1000 mg/kg in kuruma shrimp ( Marsupenaeus japonicas ) [ 22 , 23 , 24 ]. However, the WG or specific growth rate (SGR) was not significantly affected by dietary AA in some fish species, such as Siberian sturgeon ( Acipenser baerii ), red sea bream ( Pagrus major ) and Japanese eel ( Anguilla japonica ) [ 25 , 26 , 27 ].…”

Vitamin C supplementation improves growth performance and caudal fin regeneration in zebrafish ( Danio rerio )

“…Vitamin C (Vit C) deficiency can cause internal and external haemorrhage, deformities in the vertebral column, operculum and gills, low growth rate, hypophagia, fish darkening, reduced breeding performance and regeneration efficiency (Aguirre & Gatlin, 1999;Lim & Lovell, 1978;Rotta, 2003). The Vit C nutritional requirement had already been determined for several fish species including carps (Gouillou-Coustans et al, 1998;Huang et al, 2017;Liu et al, 2011;Zehra & Khan, 2012), salmonids (Grant et al, 1989;Halver et al, 1969;Sandes et al, 1992), tilapia (Falcon et al, 2007;Shiau & Hsu, 1999;Stickney et al, 1984;Wu et al, 2015) and channel catfish (Li et al, 1998;Mustin & Lovell, 1992). However, despite of its importance as an animal model, there is no report on Vit C requirement for zebrafish.…”