Dietary administration of astaxanthin improves feed utilization, growth performance and survival of Asian seabass,Lates calcarifer(Bloch, 1790)

Abstract

This study was undertaken to assess the impacts of dietary astaxanthin supplementation on growth performance, feed utilization, survival, and serum growth hormone (GH) availability of Asian seabass, Lates calcarifer, with special reference to dose–response relationships and variations during different feeding phases (short‐term, medium‐term and long‐term). Fish were fed the following diets in triplicate for 90 days: the control (CD), AX50 (50 mg astaxanthin/kg diet), AX100 (100 mg astaxanthin/kg diet) and AX150 (150 mg astaxanthin/kg diet). The findings revealed that fish exhibited significant linear increments (p < .05) in specific growth rate (SGR), weight gain, feed utilization efficiency and survival when fed various diets with escalating levels of astaxanthin. Supplementation with dietary astaxanthin significantly augmented (p < .05) GH levels in fish. Significant positive associations (p < .05) were observed between circulating serum GH levels and SGR of fish from all groups following three consecutive feeding phases, denoting a robust cause‐and‐effect relationship. Circulating GH concentrations were considered as a sensitive biomarker of growth performance in Asian seabass. This study illustrated that supplemental astaxanthin could be administered in culture protocols to improve the growth rate and commercial hatchery production of Asian seabass, and possibly other teleost species.

Association Between Fish Consumption and Muscle Mass and Function in Middle-Age and Older Adults

“…The participants were instructed to consume one filet portion (150-170g) of red sea bass fish (also known as the barramundi sea bass) with their habitual diet at lunch twice a week for 10 weeks. The red sea bass was chosen in this study because it has been cultured in many Asian countries, including Saudi Arabia (24), has a good market price, and is preferred by consumers due to its delicate and mild-flavored white meat (25). In the current study, fish were supplied by the National Aquaculture Group (NAQUA, Riyadh, Saudi Arabia), transported to Zero Fat Restaurant (Riyadh, Saudi Arabia) in two batches-the first one was one day before the start of the study and the second one was after 5 weeks of the intervention-and stored at −20 • C. One portion of filet was cooked and packaged for each participant and then delivered to participants' homes at lunch time as scheduled.…”

Key Targets for Improving Algal Biofuel Production

“…ASX possesses various health benefits and has been shown to have important dermatological applications. ASX has also been approved as a colour additive in fish feeds and as a dietary supplement for human consumption, with an advised daily intake of 0.034 mg•kg −1 body weight [67]. In addition, supercritical CO 2 extracts from H. pluvialis have been granted "novel food" status by the Food and Drug Administration (Silver Spring, MD, USA).…”

A Review on Haematococcus pluvialis Bioprocess Optimization of Green and Red Stage Culture Conditions for the Production of Natural Astaxanthin

“…Astaxanthin is often used as an aquaculture and food colorant [ 2 ]. The supplementation of astaxanthin in aquaculture nutrition improves the growth performance, growth hormone, and the survival of Asian seabass [ 11 ]. Moreover, dietary astaxanthin provision at increasing doses markedly reduced the circulating levels of serum cholesterol and triglycerides in fish [ 12 ].…”