Evaluation of commercial and experimental grower diets for use in intensive burbot (Lota lota maculosa) culture

Autor: Luke P. Oliver, Jie Ma, Sinem Gulen, Timothy J. Bruce, Kenneth D. Cain
Rok vydání: 2020
Předmět:
Zdroj: Aquaculture. 528:735490
ISSN: 0044-8486
DOI: 10.1016/j.aquaculture.2020.735490
Popis: Burbot (Lota lota maculosa) are the only true freshwater gadiforms (cod-like fish) and are a promising new species for cold water aquaculture. This “freshwater cod” produces a delicate white flesh fillet, the liver and roe are considered delicacies, and the skin can be manufactured into leather. Furthermore, burbot grow-out requires similar water quality parameters as trout production, and burbot have been found to be relatively refractory to most primary salmonid pathogens. Burbot could be reared at existing trout production facilities and represent a means of diversifying production in already established cold water aquaculture operations. For commercial burbot culture to succeed, optimal diet selection for grow-out must be determined. To address this, two feeding trials were conducted to evaluate the effect of different dietary formulations on the growth of juvenile and subadult burbot. Four dietary treatments at fixed rations were evaluated, Europa (commercial), Oncor (commercial), a formulated marine-like reference diet (Burbot 1; B1), and a formulated trout-like reference diet (Burbot 2; B2). Juvenile growth results indicated a difference in relative growth (RG; P
Databáze: OpenAIRE