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      Inclusión dietaría de la microalga: Chlorella peruviana en el crecimiento de alevines de Colossoma macropomum Translated title: Dietary inclusion of the microalgae: Chlorella peruviana in the growth of Colossoma macropomum fry

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          Abstract

          Resumen El presente trabajo evaluó el efecto de la inclusión dietaría de Chlorella peruviana sobre los parámetros de crecimiento y curvas de incremento de la relación longitud-peso de alevines de Colossoma macropomum. Se prepararon cuatro dietas con diferentes niveles de adición de C. peruviana (0%, 2.5%, 5% y 7.5%). Se emplearon un total de 180 alevines con longitud y peso inicial de 4,03 ± 0,62cm y 1,94 ± 0,65 gr respectivamente, fueron cultivados en doce acuarios de vidrio de 0.27 m3 de volumen a una capacidad de 15 peces por acuario y alimentados tres veces al día, durante 70 días, a una tasa de alimentación del 15% durante los primeros 50 días y de 3% en los últimos 20 días de estudio. La composición corporal de los peces fue determinado al inicio y al final del estudio. La calidad del agua fue monitoreada diariamente (oxígeno disuelto, temperatura y pH) y quincenalmente (nitrito, amonio, alcalinidad, dureza y cloruros). Se registró diferencias significativas (p≤0.05) en los tratamientos evaluados, las dietas con adición de C. peruviana al 2,5% y 5% fueron las que influyeron en el crecimiento de C. macropomum. Presentando un crecimiento alometrico negativo, con tendencia creciente en los tratamientos al 0%, 5%, 7.5% de inclusión de C. peruviana.

          Translated abstract

          Abstract The present work evaluated the effect of the dietary inclusion of Chlorella peruviana on the growth parameters and increase curves of the length-weight relationship of Colossoma macropomum fry. Four diets were prepared with different levels of addition of C. peruviana (0%, 2.5%, 5% and 7.5%). A total of 180 fingerlings with length and initial weight of 4.03 ± 0.62cm and 1.94 ± 0.65 gr respectively were used, they were cultivated in twelve glass aquariums of 0.27 m3 volume at a capacity of 15 fish per aquarium and fed three times a day, for 70 days, at a feeding rate of 15% during the first 50 days and 3% in the last 20 days of study. The body composition of the fish was determined at the beginning and at the end of the study. The water quality was monitored daily (dissolved oxygen, temperature and pH) and fortnightly (nitrite, ammonium, alkalinity, hardness and chlorides). Significant differences (p≤0.05) were registered in the evaluated treatments, the diets with the addition of C. peruviana at 2.5% and 5% were those that influenced the growth of C. macropomum. Presenting a negative allometric growth, with an increasing trend in treatments at 0%, 5%, 7.5% inclusion of C. peruviana.

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          Commercial applications of microalgae.

          The first use of microalgae by humans dates back 2000 years to the Chinese, who used Nostoc to survive during famine. However, microalgal biotechnology only really began to develop in the middle of the last century. Nowadays, there are numerous commercial applications of microalgae. For example, (i) microalgae can be used to enhance the nutritional value of food and animal feed owing to their chemical composition, (ii) they play a crucial role in aquaculture and (iii) they can be incorporated into cosmetics. Moreover, they are cultivated as a source of highly valuable molecules. For example, polyunsaturated fatty acid oils are added to infant formulas and nutritional supplements and pigments are important as natural dyes. Stable isotope biochemicals help in structural determination and metabolic studies. Future research should focus on the improvement of production systems and the genetic modification of strains. Microalgal products would in that way become even more diversified and economically competitive.
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            Development and biological activities of marine-derived bioactive peptides: A review

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              Recent advances in the role of probiotics and prebiotics in carp aquaculture: A review

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                Author and article information

                Journal
                arnal
                Arnaldoa
                Arnaldoa
                Universidad Privada Antenor Orrego, Museo de Historia Natural (Trujillo, , Peru )
                1815-8242
                2413-3299
                September 2022
                : 29
                : 3
                : 451-460
                Affiliations
                [1] Lima Lima orgnameUniversidad Nacional Mayor de San Marcos orgdiv1Facultad de Ciencias Biológicas orgdiv2Departamento de hidrobiología y pesquería Peru mmarianoa@ 123456unmsm.edu.pe
                [2] Lima Lima orgnameUniversidad Nacional Mayor de San Marcos orgdiv1Museo de Historia Natural orgdiv2Departamento de Simbiosis Vegetal Peru haydmon@ 123456yahoo.com
                [3] Lima Lima orgnameUniversidad Nacional Mayor de San Marcos orgdiv1Facultad de Ciencias Biológicas orgdiv2Instituto de Investigación de Ciencias Biológicas, Facultad de Ciencias Biológicas Peru emaytah@ 123456unmsm.edu.pe
                Article
                S2413-32992022000300451 S2413-3299(22)02900300451
                10.22497/arnaldoa.293.29306
                38a93ba1-b9a8-4adb-9a18-e0e5b00b6644

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 20 August 2022
                : 25 September 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 31, Pages: 10
                Product

                SciELO Peru

                Categories
                Artículos originales

                microalga,gamitana,piensos,crecimiento,relación longitud y peso,microalgae,functional food,growth,length and weight ratio

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