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Protein and lipid requirements of three-spot cichlid Cichlasoma trimaculatum larvae

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Abstract

Determination of the main nutritional requirements at different developmental stages is a prerequisite in the formulation of feeds for newly cultured fish species. In the present study, the lipid and protein requirements of larvae of a native Mexican fish, the three-spot cichlid Cichlasoma trimaculatum, were assessed using a two-factor experimental design that considered four protein (35, 40, 45, and 50%) and two lipid levels (16 and 22%) on growth, survival, and digestive enzyme activities. The best growth and feed efficiency results were obtained when larvae were fed diets including 45% protein and 22% lipids. Comprehensive evaluation of the profile of digestive enzymes using multivariate analysis also demonstrated significant differences in nutritional condition generated by varying inclusion of nutrients. Thus, an increase in protein led to an increase in alkaline protease activity and a reduction in leucine aminopeptidase activity, and the reduction of dietary lipid content led to a significant increase in lipase and trypsin enzymatic activities. Based on our results, C. trimaculatum larvae have a high capacity to hydrolyze both nutrients (protein and lipids) for the high digestive enzyme activities and increase their growth, particularly with a diet containing 45% protein and 22% lipids.

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Acknowledgements

To CONACYT for the doctorate studies fellowship 2015, fellowship number 255388. Also to William Rodríguez Valencia and Mario Alberto Gómez Gómez technicians the Centro de Investigaciones Costeras ICBiol-UNICACH, for its support on experiment development.

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Correspondence to C. A. Álvarez-González.

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Toledo-Solís, F.J., Martínez-García, R., Galaviz, M.A. et al. Protein and lipid requirements of three-spot cichlid Cichlasoma trimaculatum larvae. Fish Physiol Biochem 46, 23–37 (2020). https://doi.org/10.1007/s10695-019-00692-9

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  • DOI: https://doi.org/10.1007/s10695-019-00692-9

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