Mysid culture: Lowering costs with alternative diets
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AuthorsRodrigues-dos-Santos-Domingues, P.M. (Pedro Miguel); Forés, R. (Rafael); Turk, P. (Philip); Lee, P. (Philip); Andrade, J.P. (Jose Pedro)
During mysid culture, Artemia nauplii are traditionally used as food, with the high price of Artemia cysts adding significantly to production costs. In contrast, rotifers (Brachionis plicatilis) are cheaper to produce. As the effects of feeding rotifers to mysids is not well known, the effects of a partial and a total replacement of Artemia nauplii with rotifers were tested in a flowthrough culture system. Mysids used in this study were identified as Leptomysis sp. The three diets tested were: (1) 33% Artemia nauplii + 66% rotifers; (2) 100% Artemia nauplii; and (3) 100% rotifers. Production was similar for diets 1 and 2 (P > 0.05), but significantly lower for diet 3 (P < 0.01). Survival of spawning adults fed diets 1 and 2 was the same (P > 0.05), but spawning adults fed diet 3 (rotifers alone) had significantly lower survival (P < 0.05). In a similar way, hatchling survival was the same for diets 1 and 2 (P > 0.05), but hatchlings fed rotifers alone (diet 3) had significantly lower ...