Spirulina as a nutrient source in diets for growing sturgeon (Acipenser baeri)

Abstract

The efficiency of diets with the inclusion of Spirulina for Siberian sturgeon weaning has been tested. Three isoproteic and isoenergetic diets were formulated with an increasing level of Indian strain Spirulina (SP 40%, SP 50% and SP 60%); the diets were tested against a control diet without microalgae. The results show that Spirulina inclusion improves growth and that an inclusion level of 50% gave the greatest growth rate, a better favourable feed conversion rate and the highest protein efficiency. The fatty acid composition of fillets showed differences between the experimental and control diets: an increase in the Spirulina level induces increases in palmitic and linoleic acids and a decrease in the myristic acid. The control diet was characterized by high levels of eicosapentaenoic and docosahexaenoic acids. At the end of the experiment, statistical differences appeared in the fatty acid profile of the sturgeon fillet, mainly concerning high content of monounsaturated fatty acid and polyunsaturated fatty acid in the sturgeon fillets. If the problems related to the high production costs are solved, Spirulina could prove a good partial substitute fish meal.

Effects of partial replacement of fish meal with Spirulina platensis meal in practical diets on growth, survival, body composition, and reproductive performance of three-spot gourami (Trichopodus trichopterus) (Pallas, 1770)

“…In the present study, most of the growth characteristics showed increasing trends by the inclusion of 2.5-10 % of the algal meal, whereas further inclusion up to level of 20 % decreased growth performances. This finding agrees with studies on microalga as a substitute for fish meal or soybean meal in diets for silver sea bream (El-Sayed 1994), tilapia (Olvera-Novoa et al 1998), rainbow trout , and sturgeons (Palmegiano et al 2005(Palmegiano et al , 2008. Although a replacement level of 20 % algal meal was taken as the greatest amount of inclusion in the present study, it might likely be expected that higher levels of substitutions render significant declines in the growth indicators.…”

Tenebrio MolitorMeal in Rainbow Trout (Oncorhynchus Mykiss) Diets: Effects on Animal Performance, Nutrient Digestibility and Chemical Composition of Fillets

“…The substitution of FM and FO by plant products is a common practice in fish aquaculture feeds (De Francesco et al, 2004;Palmegiano et al, 2005). Unfortunately, the use of plant products can lead to adverse effects, essentially attributable to their content of anti-nutritional factors and/or unpalatable compounds, inappropriate fatty acid (FA) profile, and shortage of essential amino acids (Gatlin et al, 2007;Gai et al, 2012).…”

Effects of diets with increasing levels of Spirulina platensis on the carcass characteristics, meat quality and fatty acid composition of growing rabbits

“…SP has been evaluated widely as fresh meal for mollusc bivalve and fish larvae (Harel et al, 2002;Lu et al, 2002) or as raw meal for juveniles and adults (Nandesha et al, 2001;Takeuki et al, 2002;Palmegiano et al, 2005;Palmegiano et al, 2008).…”