Sílvia Mello - Academia.edu (original) (raw)

Papers by Sílvia Mello

Research, Society and Development

Several foods are available for the formulation of rations in Brazil; however, the effectiveness ... more Several foods are available for the formulation of rations in Brazil; however, the effectiveness of a few of these foods has been evaluated in diets for bullfrog tadpoles (Lithobates catesbeianus). This study aimed to evaluate alternative foods (worm meal, peeled banana, peeled pumpkin, and peeled avocado) with different levels of crude protein and ether extract for the nutrition of bullfrog tadpoles to obtain the best animal performance and water quality. In a 60 days long experiment, a total of 480 bullfrog tadpoles (stage 25 of the Gosner table, 1960) with an average weight of 0.107 ± 0.004 g, were used. The experimental design was completely randomized (DIC) in a factorial scheme (2x2) with four treatments [rations with 320 g/kg crude protein (CP) and 90 g/kg ether extract (EE); 380 g/kg CP and 90 g/kg EE; T3:320 g/kg CP and 110 g/kg EE; 380 g/kg CP and 110 g/kg EE] each consisting of four replicates. To verify the normality of the data, the results of zootechnical performance, ...

Anais da Academia Brasileira de Ciências, 2021

Two experiments were carried out to test better stocking proportion according to animal size for ... more Two experiments were carried out to test better stocking proportion according to animal size for tilapia (Oreochromis niloticus) and tadpole (Lithobates catesbeianus). The experiments were laid out in a completely randomized design with five treatments (in Experiment I) and four treatments (in Experiment II). In Experiment I, the treatments consisted of a tilapia monoculture; a 75% tilapia + 25% tadpole polyculture; a 50% tilapia + 50% tadpole; a 25% tilapia + 75% tadpole; and a tadpole monoculture. In Experiment II, the treatments were represented by a tilapia monoculture; a 12.5% tilapia + 87.5% tadpole polyculture; a 25% tilapia + 75% tadpole; and a tadpole monoculture. In the first trial, mortality rate differed significantly, with the polyculture treatments having almost 100% mortality of tadpoles. In the second experiment, after adjustments in the initial size of the species, there were significant differences between treatments, with the 12.5% tilapia + 87.5% tadpole polyculture and the tadpole monoculture providing the best results. Regardless of the chosen density, for a polyculture of Nile tilapia and bullfrog tadpoles, ideal conditions would be stocking tilapia fry weighing 50% of the weight initial tadpoles and the proportion of one tilapia for seven tadpoles.

Ciência e Agrotecnologia, 2016

One of the main hindrances to frog farming is the lack of knowledge of the nutritional requiremen... more One of the main hindrances to frog farming is the lack of knowledge of the nutritional requirements of tadpoles that allow nutritionists to formulate the ideal diet for this phase, reducing operational costs and providing homogeneity to the shoal. This study aimed at evaluating the anatomy of the digestive tract and morphometry of the midgut and hindgut of bullfrog (Lithobates catesbeianus) tadpoles to provide subsidies for nutritionists to make adjustments in the balancing of suitable diets for this species. The population of tadpoles that received the dietary regimen named DR3, which consisted of a fortnight increase of the dietary protein levels (from 32 to 45% of CP) for 60 days, showed the best results regarding weight gain, survival rate, and homogeneity in the passage of the larval stages as compared with the other dietary regimens tested. Additionally, the morphometry of the intestines of the animals subjected to DR3 showed a greater length (419.2 mm) and higher caliber of t...

Semioses

The World aquaculture fish production already accounts for approximately 50% of the fish used for... more The World aquaculture fish production already accounts for approximately 50% of the fish used for human consumption. Among the species produced in freshwater are tilapia, frogs and shrimps. These species present high nutritional value and can be produced in several regions of Brazil. The state of Rio de Janeiro presents adequate climatic conditions for the creation of these species. Among the production systems used are water recirculation, a system called closed and intensive; the net tanks that are open and intensive; the ponds that can be extensive and semi-intensive. The production of aquatic organisms in captivity for human consumption will meet a demand evidenced in recent years, when production from the capture is in full decline. Fish is a food of high biological value and presents itself as a healthy food alternative and its small and medium scale production is an income alternative for producers in several regions of Brazil.

Revista Brasileira de Saúde e Produção Animal, 2022

Performance of bullfrog tadpoles (Lithobates catesbeianus) fed balanced diets using alternative e... more Performance of bullfrog tadpoles (Lithobates catesbeianus) fed balanced diets using alternative energy ingredients containing vegetable mesocarp Desempenho de girinos de rã-touro (Lithobates catesbeianus) alimentados com dietas balanceadas com ingredientes de energia alternativa utilizando mesocarpo vegetal

DOAJ (DOAJ: Directory of Open Access Journals), May 1, 2018

The Environmental Education (EE) is a key strategy to raise awareness and promote a change in beh... more The Environmental Education (EE) is a key strategy to raise awareness and promote a change in behavior with regard to responsibility and commitment to environmental preservation generating expectations of a greater awareness of environmental problems, which can greatly improve the relationship of man with nature and the environment to which is inserted. In this study, developed at the Municipal School Odilon de Andrade in the"Complexo do Alemão" the art was associated with environmental education. Students of the 7th and 8thschool years participated in the workshops held twice a week, one for each class, between August and November 2015. The study adopted a diverse pedagogical strategy covering: group dynamics, reading and interpreting texts on environment and environmental preservation; discussions about the history of urbanization of the city of Rio de Janeiro; landscape photos show the city before and after the environmental impacts; drawing classes; painting classes; choice and study of landscapes by students; preparationof texts on the paintings made. The results showed that the workshops were well accepted by the students. The pictures painted by the students were exposed in Unisuam and also at the Municipal School Odilon de Andrade and was even prepared a video by Unisuam that will be used in the dissemination of project.

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Boletim Do Instituto De Pesca, Dec 27, 2017

Frog meat is a highly digestible food, which justifies its use in special diets. The aim of this ... more Frog meat is a highly digestible food, which justifies its use in special diets. The aim of this study was to evaluate the potential for use of frog meat in hospital diets and in diets recommended by physicians, in addition to promoting its consumption. Interviews were performed at hospitals and medical offices in Rio de Janeiro (RJ, Brazil). The survey identified that 72% of interviewedphysicians, nutritionists, and staff responsible for hospital kitchens-do not know the nutritional properties of frog meat, and 50% believe there are difficulties in its use and highlighted the little availability of the product in the market and its high price. Frog meat is considered a healthy food, but the importance of its use and forms of preparation must be divulged.

Journal of Food Safety, Mar 11, 2015

The aim of this study was to investigate the effect of ultraviolet (UV)‐C treatment on the decrea... more The aim of this study was to investigate the effect of ultraviolet (UV)‐C treatment on the decrease of the inoculated Staphylococcus aureus population in precooked shredded bullfrog meat. The precooked meat was inoculated with 8 log cfu/g of S. aureus. The packaged bullfrog's back meat was then exposed to low (0.65 mW/s/cm2), medium (1.04 mW/s/cm2) and high (1.68 mW/s/cm2) UV‐C intensities over different time intervals (60, 100 and 140 s). A reduction of 3 log cfu/g was observed in all treatments when compared with the inoculated but nonirradiated treatment (T0). All the UV‐C treatments of bullfrog's back meat used in this study reduced the S. aureus count (P < 0.05). However, this decrease was not statistically significant between each UV‐C treatment. Due to its effectiveness in log reduction, UV‐C light technology can be utilized for this type of bacteria reduction in the precooked shredded bullfrog back meat industry.Practical ApplicationsIn this work, we studied the effect of short‐wavelength ultraviolet (UV)‐C light to reduce Staphylococcus aureus levels in precooked shredded bullfrog back meat. First, this study contributes knowledge about the use of a nonthermal technology as a pathogen‐reduction step in exotic meat. Second, the UV‐C is presented as a fast, practical and inexpensive method and does not change the industrial flow. Lastly, the data showed that there was a significant reduction of these bacteria in precooked shredded bullfrog back meat and suggests that it can be effectively applied in the bullfrog meat industry.

Revista Augustus, 2020

O presente trabalho teve por objetivo relatar as relações socioambientais do manguezal de Magé, m... more O presente trabalho teve por objetivo relatar as relações socioambientais do manguezal de Magé, município da Baixada Fluminense, localizado ao fundo da Baia de Guanabara. Torna-se necessário a divulgação das ações que retrocederam os obstáculos socioambientais, como a poluição e a competição por terras anteriormente utilizadas para a pesca artesanal e, atualmente, dominada pela ação de grandes empreendimentos industriais. Recuperou-se informações, sobretudo, do acidente ecológico que ocorreu em 18 de janeiro de 2000, sendo este o maior da história do país com o vazamento do duto da PETROBRÁS que liga a Refinaria Duque de Caxias (REDUC) ao seu terminal da Ilha D´Água. Com isso, foram despejados 1,3 milhões de m³ de óleo e graxa nas águas da Baía de Guanabara. Este acidente foi um marco no declínio das atividades pesqueiras desta Baía, conforme citado pela literatura. A região mais afetada é o chamado fundo da Baía, que fica entre os bairros do Caju, Ramos, Ilha do Governador e de Mag...

Semioses, Oct 27, 2017

Artificial fertilization is an important technique for frog producers to obtain young forms. The ... more Artificial fertilization is an important technique for frog producers to obtain young forms. The study was carried out with the following objectives; the first one was to verify the best dosage of the hormone for sperm induction, according to which the time in hours that the bullfrog semen shows sperm motility after cooling to 10 ° C, and The second was to evaluate the bull frog semen collected in four sequential days after hormone induction. The hormone dosages for induction for semen collection require further studies and the cooling of the semen in up to 24 hours may be an alternative to the producer for use in the artificial fertilizations of the bullfrog.

Food Science and Technology, 2020

Bullfrog meat marketed in Brazil has been gaining ground among the population due to its soft fla... more Bullfrog meat marketed in Brazil has been gaining ground among the population due to its soft flavor, low calorie content, and high protein content. It is recommended for treating gastrointestinal and allergic diseases. This study aims to maximize the use of bullfrog carcass by applying a heating technology that enables the use of bones in gastronomy, which contain high calcium bioavailability, and represent about 40% of the product's total weight. A meat-and-bone flour called Low Cost Alternative Food has been developed, which, in addition to being functional and rich in protein and calcium, presents similar flavor to that of unmixed bullfrog meat, allowing food enrichment. Dehydration of the skeleton was carried out in an oven, and the remaining material was crushed and then vacuum packed, all in compliance with the standards for good manufacturing practices and under good sanitary conditions, making it microbiologically fit for human consumption for a total of 60 days while stored under refrigeration. Results showed a composition of 25% mineral matter, 60% protein which presented a 90% digestibility rate, only 12% fat, and 2% carbohydrates. This composition can compensate for calcium deficiency and malnutrition due to the quality of its protein.

13º Encontro Nacional de Ranicultura (Enar) e 4º International Meeting on Frog Research and Technology (Technofrog), Nov 12, 2020

Revista da Seção Judiciária do Rio de Janeiro, 2019

A chegada do século XXI trouxe diversos novos parâmetros para o sectarismo de gênero que permeia ... more A chegada do século XXI trouxe diversos novos parâmetros para o sectarismo de gênero que permeia a sociedade mundial, e principalmente brasileira. Um destes é a chegada do conceito de empoderamento feminino através da inserção da mulher no meio de trabalho, efetivamente. No entanto, por um caráter de inserção subalterno, de substituta à mão de obra masculina, houve o desenvolvimento de uma herança hierárquica no papel da mulher no mercado de trabalho, onde o gênero feminino se encontra nivelado por baixo. Dentro desse contexto, assim como o de liberdade individual e independência de gênero surgem os parâmetros necessários para compreender a importância do desenvolvimento de direitos civis e conscientização coletiva do papel da mulher no meio laboral, como o exemplo da Agenda 2030. Dentro dessa lógica, o empreendedorismo feminino é pioneiro, assim como a introdução da mulher através do varejo. Com destaque para o recorte social no Rio de Janeiro, que demonstra um ótimo recorte espaci...

Acta Scientiarum. Biological Sciences, 2014

Feeding is one of the major factors that influences the growth and development of animals, justif... more Feeding is one of the major factors that influences the growth and development of animals, justifying thus the present experiment that analyzed the effect of the number of feeding environments on the performance of bullfrog tadpoles through the growth (weight and length) and performance (food remains, average feed intake, average weight gain, and feed conversion). The treatments consisted of subunits of two, four, and eight feeding environments in the experimental units at disposal for the tadpole population, and one without subdivisions, comprising a single environment, during 60 experimental days. The design was completely randomized, with four treatments and three replications. The values were tested using an analysis of variance and Duncan test (α = 0.05). The growth in weight and length and the indices of animal performance were influenced by the number of feeding environments, with the best results found for the treatments with four and eight environments, and the worst, for t...