Tendencias sobre las preferencias en el consumo de la carne de pescado en la comunidad académica del Politécnico Colombiano Jaime Isaza Cadavid, Medellín

La Cadena Productiva Piscícola, en Colombia, ha manifestado la importancia de incentivar el consumo de la carne de pescado bajo el marco de la competitividad comercial; esto es variación en especies, presentaciones y precios, como respuesta a los bajos índices de consumo de este producto. Por lo anterior, se desea contribuir al conocimiento de este tema en la comunidad académica del Politécnico Colombiano Jaime Isaza Cadavid, considerándolo como referente local de algunas tendencias en la ciudad de Medellín, y abrir la posibilidad de esta opción fuera de las épocas de cuaresma y Semana Santa. Para conocer de ello, fueron hechas 9 preguntas, entre específicas y generales, a 30 estudiantes de la institución, escogidos al azar. Los productos fueron realizados por alumnos de la asignatura de Acuicultura del Programa de Ingeniería Agropecuaria, Facultad de Ciencias Agrarias, sobre 9 diferentes productos con base en pescado, como materia prima. Se presentó una aceptación por parte de los encuestados, del 93% de los productos ofrecidos y, además, un 96% de ellos mostró su interés en adquirirlos en el mercado. La mayoría de los encuestados consumen carne de pescado una vez a la semana, preferiblemente en fritura, acompañada de salsa tártara. También optan por la ensalada con atún enlatado, y manifestaron conocer los beneficios nutricionales de este tipo de carnes. Las características observadas sugirieron un patrón general y recurrente de consumo, por lo que se debe desarrollar otras posibilidades como estrategia de cambio comercial. Abstract The Cadena Productiva Piscícola, in Colombia, has manifested the importance of motivating the consumption of the fish meat under the mark of the commercial competitiveness; this is variation in species, presentations and prices, as answer to the low indexes of consumption of this product. For the above-mentioned, it is wanted to contribute to the knowledge of this topic in the Politécnico Colombiano Jaime Isaza Cadavid’s academic community, considering it as relating local of some tendencies in the city of Medellín, and to open the possibility of this option outside of the lent and holy week times. To know of it, 9 questions were asked, between specific and general, to 30 students of the institution at random. Products were alumni’s elaborated of the Acuicultura subject of the Agricultural Engineering Program, Ciencias Agrarias Faculty, on 9 different products with base in fish, as raw material. A 93% of the interviewed showed an acceptance of the products offered and, also, a 96% of them showed its interest in acquiring them in the market. Most of those consume fish meat once a week, preferably in fritter accompanied by sauce Tartar. Also choose salad with canned tuna, and declared to know the nutritional benefits of this type of meats. The observed characteristics suggested a general and recurrent pattern of consumption for what should be developed other possibilities as strategy of commercial chang

Evaluación zootécnica de alevinos de tilapia roja Oreochromis sp suplementados con botón de oro Tithonia diversi-folia

The general objective was to evaluate the zootechnical parameters of red tilapia fingerlings Oreochromis sp, in the rearing stage, supplemented with buttercup Tithonia diversifolia. The trial was carried out in the laboratory of the Centro Experimental Piscícola in San Jerónimo, Antioquia (Colombia). The 135 fingerlings were collected and placed in nine aquariums of 63 L of water. T1 - 15% supplementation, T2 - 20% supplementation and a Control - without supplementation, were evaluated for six weeks. The number of fingerlings, the initial and final weights and sizes and the physicochemical parameters of the water were recorded and statistically evaluated. The results showed a significant difference (p<0.05) for T2 compared to T1 and Control. Greater final weight and height (1.0±0.4g and 3.9±0.4cm), K>1, TEC=2.1%/day and survival (100%). The physicochemical parameters of the water maintained the optimal average values ​​of temperature (Ẋ=25.0±0.3 °C), oxygen level (Ẋ=7.0±1.3 mg/L) and pH (Ẋ=7.8±0.3).El objetivo general fue evaluar los parámetros zootécnicos de alevinos de tilapia roja Oreochromis sp, en etapa de levante, suplementados con botón de oro Tithonia diversifolia. El ensayo se realizó en el laboratorio del Centro Experimental Piscícola en San Jerónimo, Antioquia (Colombia). Los 135 alevinos fueron colectados y ubicados en nueve acuarios de 63 L de agua. Se evaluaron T1 – suplementación 15%, T2 - suplementación 20% y un Control - sin suplementación, durante seis semanas. El número de alevinos, los pesos y tallas, inicial y final, y los parámetros fisicoquímicos del agua fueron registrados y evaluados estadísticamente. Los resultados mostraron una diferencia significativa (p<0.05) para T2 respecto a T1 y Control. Mayor Peso y Talla final (1.0±0.4g y 3.9±0.4cm), K>1, TEC=2.1 %/día y sobrevivencia (100%). Los parámetros fisicoquímicos del agua estuvieron dentro de los valores promedio óptimos de temperatura (Ẋ=25.0±0.3 °C), nivel de oxígeno (Ẋ=7.0±1.3 mg/L) y pH (Ẋ=7.8±0.3). The general objective was to evaluate the zootechnical parameters of red tilapia fingerlings Oreochromis sp, in the rearing stage, supplemented with buttercup Tithonia diversifolia. The trial was carried out in the laboratory of the Centro Experimental Piscícola in San Jerónimo, Antioquia (Colombia). The 135 fingerlings were collected and placed in nine aquariums of 63 L of water. T1 - 15% supplementation, T2 - 20% supplementation and a Control - without supplementation, were evaluated for six weeks. The number of fingerlings, the initial and final weights and sizes and the physicochemical parameters of the water were recorded and statistically evaluated. The results showed a significant difference (p<0.05) for T2 compared to T1 and Control. Greater final weight and height (1.0±0.4g and 3.9±0.4cm), K>1, TEC=2.1%/day and survival (100%). The physicochemical parameters of the water maintained the optimal average values ​​of temperature (Ẋ=25.0±0.3 °C), oxygen level (Ẋ=7.0±1.3 mg/L) and pH (Ẋ=7.8±0.3).O objetivo geral foi avaliar os parâmetros zootécnicos de alevinos de tilápia vermelha Oreochromis sp, na fase de recria, suplementados com ranúnculo Tithonia diversifolia. O ensaio foi realizado no laboratório do Centro Experimental Piscícola em San Jerónimo, Antioquia (Colômbia). Os 135 alevinos foram coletados e colocados em nove aquários de 63 L de água. T1 - 15% de suplementação, T2 - 20% de suplementação e um Controle - sem suplementação, foram avaliados por seis semanas. O número de alevinos, os pesos e tamanhos iniciais e finais e os parâmetros físico-químicos da água foram registrados e avaliados estatisticamente. Os resultados mostraram diferença significativa (p<0,05) para T2 em relação a T1 e Controle. Maior peso e altura finais (1,0±0,4g e 3,9±0,4cm), K>1, TEC=2,1%/dia e sobrevida (100%). Os parâmetros físico-químicos da água estiveram dentro dos valores médios ótimos de temperatura (Ẋ=25,0±0,3 °C), nível de oxigênio (Ẋ=7,0±1,3 mg/L) e pH (Ẋ=7,8±0,3)

Catálogo Taxonômico da Fauna do Brasil: setting the baseline knowledge on the animal diversity in Brazil

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others