Growth, nutritional efficiency, and profitability of juvenile GIFT strain of Nile tilapia (Oreochromis niloticus) reared in biofloc system on graded feeding rates

Oliveira, Luciana Kelly; Pilz, Letícia; Furtado, Plínio Schmidt; Ballester, Eduardo Luís Cupertino; Bicudo, Álvaro José de Almeida

doi:10.1016/j.aquaculture.2021.736830

Cited by 27 publications

(18 citation statements)

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“…Las marcas colectivas, las DO y IG se observan como posibles instrumentos para proteger los conocimientos de las comunidades indígenas 17 , porque a diferencia de las patentes, los diseños industriales y los derechos de autor, tienen un carácter colectivo, permitirían mantener su titularidad por tiempo indefinido y serÍan generadores de posibles activos en el mercado 18 .…”

Section: Referencias Bibliográficasunclassified

“…17 OMPI (2015): Propiedad intelectual y recursos genéticos, conocimientos tradicionales y expresiones culturales tradicionales. 18 UNCTAD. (2014).…”

Section: Referencias Bibliográficasunclassified

“…Metodológicamente el tipo de investigación fue descriptivo y de campo, el diseño se catalogó como transaccional no experimental, la población estuvo constituida por treinta y ocho (38) líderes del personal administrativo, gerencial y supervisorio. La técnica de recolección de datos fue la encuesta, se realizó un instrumento aplicado a la población de estudio el cual estuvo compuesto por dieciocho ítems (18), de alternativas tipo lickert. Para la confiabilidad se utilizó el Coeficiente Alfa de Cronbach obteniéndose el 0.89 indicando un alto grado de confiabilidad.…”

Section: Metodologíaunclassified

“…La tilapia roja (Oreochromis sp) es una de las especies más populares en la producción piscícola a nivel mundial debido principalmente a las características como crecimiento rápido [18], facilidad de cultivo, resistencia a enfermedades así como al estrés y a las condiciones ambientales adversas [19], [20]. Esta especie tiene una ubicación baja en el nivel trófico, por lo que es indicada, ya que consume efectivamente el BFT como fuente de alimento secundario [21].…”

Section: Introductionunclassified

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Avances en investigación científica. Tomo III: Ciencias multidisciplinarias

Garçés¹

2022

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La pandemia por COVID-19 no ha acabado. Aún hoy, a poco más de dos años de su inicio, sigue siendo un fenómeno impredecible que ha suscitado múltiples aristas de interés a partir de las líneas de investigación tradiciones. Nosotros, desde la Corporación Universitaria Autónoma de Nariño AUNAR Cali (Colombia), hemos evidenciado el interés en socializar, compartir, reflexionar y construir a partir de estas nuevas dinámicas de trabajo en el quehacer investigativo. Por ello, por segundo año consecutivo a finales del 2021 organizamos el II Congreso Internacional de Ciencias Económicas y Sociales. III Encuentro de Socialización Académica sobre Experiencia Investigativas para generar ese espacio de comunión entre investigadores de distintas instituciones y países a nivel mundial unidos con un mismo fin: aportar innovaciones científico-tecnológicas al avance de la investigación y la innovación. En este tercer tomo del libro Avances en investigación científica se recogen los trabajos presentados en el mencionado evento como una estrategia de apropiación social y difusión del conocimiento libre y abierto. Esta edición, a partir de las ciencias multidisciplinarias, condensa trabajos en las áreas de cultura y sociología, economía y gestión organizacional, estrategias y prácticas educativas, medio ambiente y sostenibilidad, y políticas públicas.

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“…17 OMPI (2015): Propiedad intelectual y recursos genéticos, conocimientos tradicionales y expresiones culturales tradicionales. 18 UNCTAD. (2014).…”

Section: Referencias Bibliográficasunclassified

Section: Metodologíaunclassified

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Avances en investigación científica. Tomo III: Ciencias multidisciplinarias

Garçés¹

2022

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“…Silva et al (2020) observed the feeding of juvenile tilapia with different feeding rates based on apparent satiety. However, restricted feed management generally results in a lower feed conversion rate than that achieved by ad libitum management, in addition to being more easily performed by fish farmers in practice (Oliveira et al, 2021). In this sense, Oliveira et al (2021) evaluated different rates of fixed feedings in the tilapia nursery (3 to 40 g).…”

Section: Introductionmentioning

confidence: 99%

Nile tilapia nursery feeding management in a biofloc system

et al. 2022

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Nile tilapia (Oreochromis niloticus) has an opportunistic omnivorous feeding behavior and studies have demonstrated the consumption of microorganisms by the species from bioflocs, especially in the early phases of life. One may thus assume that when reared in biofloc systems, there may be a reduction in the feeding rates in the Nile tilapia nursery system when compared to the ponds. This study evaluated the effects of different feeding management options in Nile tilapia nurseries in a biofloc system. A total of 700 fingerlings (2.37 ± 0.55 g) were stocked in 20 experimental units (100 L) and inoculated with mature biofloc for the evaluation of five different feeding management options. After 49 days, it was observed that the higher feed rates caused an increase in nitrogen compounds and solids in the water, worsening the feed conversion rate. Furthermore, the excess feed supplied to the tilapia in the biofloc caused a reduction in the utilization of protein nitrogen, an increase in the liver and visceral fat, in addition to an increase in the production of solids and consumption of alkalinizer by fish biomass. On the other hand, low feeding rates cause a decrease in the growth and uniformity of the tilapia juveniles. Taking the results into consideration, it is recommended to use the feed management option proposed in treatment TC (26% below the highest feed rate) in the tilapia nursery in the biofloc system.

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Aquaculture: A hidden goldmine for the rural poor—A cost–benefit analysis of fish farming for sustainable development and food security in Vihiga County, Kenya

Syanya,

Harikrishnan,

Simiyu

et al. 2024

Bus Strat Dev

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In Kenya, aquaculture plays a significant role in enhancing the livelihoods of rural communities by boosting the local economy and diversifying protein sources. Although Vihiga County in Western Kenya boasts considerable potential for aquaculture, it paradoxically experiences some of the highest levels of poverty and malnutrition in the country. The profitability of fish farming has also been affected by inefficiencies and poor resources, disproportionately affecting the income and nutritional value of rural poor who rely on Aquaculture as a source of cheap protein. The study was conducted in Vihiga County to assess the cost–benefit of aquaculture production, selecting 100 fish farmers through a stratified random sampling technique from five sub‐counties. A descriptive research design was employed, and data analysis was conducted using correlation and regression analysis with SPSS. Budgetary techniques were used for the cost–benefit analysis. Data presentation was by comparing the mean and standard deviation in US dollars of different pond size production. The research findings indicated that the size and type of pond do not have a significant correlation and differences in production (p‐value >.05). There is a strong positive correlation between the size of the pond and the stocking density. The variable cost (VC) has a positive correlation with pond productivity meaning that an increase in VC leads to an increase in production. And is not statistically significant (p‐value = .21827, p‐value >.05). Moreover, the total cost (TC) correlation is statistically significant (p‐value = .0351, p < .05). Larger ponds are more profitable but require higher costs production than smaller ponds. The study concludes that pond size significantly impacts productivity, advocating for smaller ponds to achieve higher net returns with lower production costs. Major challenges include high costs of feeds, inputs, fish diseases, and post‐harvest losses. Key policy variables influencing aquaculture in Vihiga County include infrastructure, fish feed production, capital, and fisheries extension services. Adequate financial support from both National and County governments is crucial for sustainable aquaculture in alignment with Kenya's Vision 2030 and Global Sustainable Development Goals. Policymakers are urged to assist small‐scale farmers with financing, training, and market information to optimize returns on investment.

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Growth, nutritional efficiency, and profitability of juvenile GIFT strain of Nile tilapia (Oreochromis niloticus) reared in biofloc system on graded feeding rates

Cited by 27 publications

References 56 publications

Avances en investigación científica. Tomo III: Ciencias multidisciplinarias

Avances en investigación científica. Tomo III: Ciencias multidisciplinarias

Nile tilapia nursery feeding management in a biofloc system

Aquaculture: A hidden goldmine for the rural poor—A cost–benefit analysis of fish farming for sustainable development and food security in Vihiga County, Kenya

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