Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 145 )

2018 ( 311 )

2017 ( 331 )

2016 ( 354 )

Custom range...

Search Results: 1 - 10 of 179087 matches for " Jakeline Marcela Azambuja de Freitas "
All listed articles are free for downloading (OA Articles)
Page 1 /179087
Display every page Item
Proximate and microbiological characterization of nuggets of mandi-pintado (Pimelodus britskii) Caracteriza o centesimal e microbiológica de nuggets de mandi-pintado (Pimelodus britskii)
Juliana Cristina Veit,Jakeline Marcela Azambuja de Freitas,Elenice Souza dos Reis,Marcia Luzia Ferrarezi Maluf
Semina : Ciências Agrárias , 2011,
Abstract: This study aimed to evaluate centesimal and microbiological parameters of mandi-pintado nuggets. With the results from the biometry of the fish, it was possible to observe that the species shows high main trunk yield and low content of visceral fat. After the utilization of the body proportions, the steaks were grounded and breaded, and the samples (in natura and nuggets) were separated to carry out centesimal and microbiological composition. The patties show 14,67% protein, 10,12% lipids, 16,43% carbohydrates, 2,70% mineral matter and 56,08% humidity, therefore fitting the patterns required by the Brazilian legislation. The microbiological results indicated that both the prime matter and the nuggets developed were ready for the processing and for the consumption. Therefore, mandi-pintado shows a high yeald of main trunk and a low content of visceral fat, besides from being an ideal raw for the development of nuggets that not only are a highly nutritious kind of food, but can also be easily prepared and have a high aggregated value. Este trabalho teve como objetivo avaliar os parametros centesimais e microbiológicos de nuggets de mandi-pintado. Com os resultados da biometria dos peixes pode-se observar que a espécie trabalhada apresenta alto rendimento de tronco limpo e baixo teor de gordura visceral. Após a realiza o das propor es corporais, os filés foram moídos e empanados, e as amostras (in natura e de nuggets) foram separadas para a realiza o da composi o centesimal e microbiológica. Os empanados apresentaram 14,67% de proteína, 10,12% de lipídios, 16,43% de carboidratos, 2,70% de matéria mineral e 56,08% de umidade, ou seja, dentro dos padr es exigidos pela legisla o brasileira. Os resultados microbiológicos indicaram que tanto a matéria prima quanto os nuggets desenvolvidos estavam aptos para o processamento e/ou consumo. Portanto, o mandi-pintado apresenta alto rendimento de tronco limpo e baixo teor de gordura visceral, além de ser uma matéria prima ideal para o desenvolvimento de nuggets, sendo este um alimento altamente nutritivo, de fácil preparo e com grande valor agregado.
Dy and umided salting of fillets of pacu (piaractus mesopotamicus) Salga seca e úmida de filés de pacu (piaractus mesopotamicus)
Jakeline Marcela Azambuja de Freitas,Letícia Hayashi Higuchi,Aldi Feiden,Márcia Luzia Ferrarezi Maluf
Semina : Ciências Agrárias , 2011,
Abstract: The goal of this study was to evaluate the process of salting and dry salting of fillets in pacu (P. mesopotamicus), from cultivation in cages. Fillet with skin were salted at a rate of 40% of salt in relation of the initial weight, for a period of 10 days. After processing, were evaluated for microbiological and centesimal composition of fillets subjected to salting and determining the concentration of sodium chloride (NaCl) and calculation of income. The centesimal composition were evaluated the protein, ether extract, moisture and ash of the raw material fresh and processed products by salting. The microbiological analysis included the determination of coliforms at 45 ° C, Salmonella and Staphylococcus coagulase positive. The pacus subjected to umided and dry salting were within quality control standards established by the legislation. The content of umided, protein and lipids and chlorides showed differences (P < 0.05) between the processes of salt. However both forms can be used for the development of technological processes of low investment by encouraging new options for fish consumption. O objetivo do presente estudo foi avaliar o processo da salga seca e salga úmida em filés de pacu (P. mesopotamicus), provenientes do cultivo em tanques-rede. Os filés com pele foram salgados na propor o de 40% de sal em rela o ao peso inicial, por um período de 10 dias. Após processamento, foram avaliados os parametros microbiológicos e de composi o centesimal dos filés submetidos a salga, bem como a determina o da concentra o de cloreto de sódio (NaCl) e cálculo de rendimento. Quanto à composi o centesimal foram avaliados os teores de proteína, extrato etéreo, umidade e matéria mineral da matéria-prima in natura e nos produtos processados por salga. As análises microbiológicas compreenderam a determina o de Coliformes a 45°C, Salmonella sp e Staphylococcus coagulase positiva. Os pacus submetidos a salga úmida e seca mantiveram-se dentro dos padr es microbiológicos estabelecidos pela legisla o. Os teores de umidade, proteína e lipídios e cloretos apresentaram diferen as (P < 0,05) entre os processos de salga. No entanto, ambas as formas podem ser utilizadas para o desenvolvimento de processos tecnológicos de baixo investimento incentivando novas op es para o consumo de pescado.
Elenice Souza Reis,Aldi Feiden,Wilson Rogério Boscolo,Jakeline Marcela Azambuja de Freitas
Ciência Animal Brasileira , 2012,
Abstract: The aim of this study was to evaluate the zootechnical performance and chemical composition of jundia juveniles Rhandia voulezi fed with mash, pelletized and extruded diets and cultivated in cages. One hundred and fifty fish were distributed in fifteen cages (0.20 m3), arranged in cages (5m3), in the hydroelectric plant of Governador José Richa, in Igua u River (Paraná-Brazil). The fish were fed five times a day, with mash, pelletized and extruded diets, containing 30% of protein and 3250 Kcal/kg of digestible energy/kg. At the end of 60 days, significant differences (p<0.05) were observed on fish performance. The fish that were fed with pelletized diet, presented higher average of final weight (44.08g), final length (16.51cm) and weight gain (36.65g). The different processes did not influence fish survival. The averages of protein and mineral matter of carcass chemical composition did not differ statistically (p<0.05), while the values of humidity and lipideos presented differences among treatments. The highest average of lipideos (8.59%) was observed in peletized diet. The mash diet provided fish with lower lipideo (5.45%) and higher humidity (75.98%) rates. A pelleted diet is most suitable for juvenile catfish R. voulezi cultivation in cages.
Uso de trigo organico na alimenta??o de juvenis de tilápia do Nilo
Lui, Tatiane Andressa;Neu, Dacley Hertes;Boscolo, Wilson Rogério;Bittencourt, Fábio;Freitas, Jakeline Marcela Azambuja de;Feiden, Aldi;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000400015
Abstract: although the organic fish production is a growing practice in the world, in brazil, there are just a few studies about it. this study aimed at evaluating the use of organic wheat, in replacement of organic maize, in the diet of nile tilapia juveniles. a total of 200 juveniles (5.24 ± 0.13 g; 6.91 ± 0.40 cm) were distributed in 20 experimental hapas (0.15 m3 of useful volume), in a concrete water tank with capacity for 25.0 m3 and constant aeration system, in a completely randomized design. five diets containing organic wheat middlings (0.0 g kg-1, 50.0 g kg-1, 100.0 g kg-1, 150.0 g kg-1 and 200,0 g kg-1) were elaborated and feeding took place four times a day (08:00 a.m., 11:00 a.m., 02:00 p.m. and 05:00 p.m.). final weight, total length, survival rate, daily weight gain, fulton's condition factor, visceral fat, hepatosomatic index, viscerosomatic index and the centesimal composition of fish carcass (moisture, protein, lipid and ash contents) were evaluated. the inclusion levels of organic wheat middlings did not affect the variables analyzed. the organic wheat can be added to the diet of nile tilapia juveniles up to the limit of 200.0 g kg-1, without causing any productive problem.
Proteína e energia na dieta de jundiás criados em tanques-rede
Freitas, Jakeline Marcela Azambuja de;Sary, Cesar;Luchesi, Júnior Dasoler;Feiden, Aldi;Boscolo, Wilson Rogério;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011001200002
Abstract: the objective of this study was to evaluate the influence of two levels of digestible energy (3250 and 3500 kcal kg-1) in conjunction with three levels of crude protein (25, 30 and 35%) on the productive performance of catfish (rhamdia voulezi) juveniles. two-hundred and forty catfish juveniles with 95.55±6.70 g average weight and 20.43±1.13 cm total length were randomly assigned into twenty-four 370 l-cages, in a factorial arrangement with six treatments and four reptitions. feeding was performed four times a day, ad libitum. at end of experimental period, the factorial analysis of variance showed significant influence with respect to the different parameters evaluated. the fish fed with diets of 30% crude protein and 3,250 kcal digestible energy kg-1 of diet presented the best results. therefore, diets with at least 30% crude protein and 3,250 kcal digestible energy kg-1 are recommend for catfish juveniles.
Proteína e energia em ra??es para alevinos de piavu?u
Bittencourt, Fábio;Feiden, Aldi;Signor, Arcangelo Augusto;Boscolo, Wilson Rogério;Freitas, Jakeline Marcela Azambuja de;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001200001
Abstract: the aim of this study was to evaluate the requirement of crude protein (cp) and digestible energy (de) in piavu?u fingerlings (leporinus macrocephalus), for a period of 45 days. it was used 150 fingerlings with average weight of 0.40 ± 0.08g, distributed in 30 aquariums (30l) in a completely randomized design in a 3x 2 two-factorial scheme composed of three levels of crude protein (25, 30 and 35% of crude protein) and two levels of digestible energy (3,250 and 3,500 kcal of de/kg), totaling six diets and five replicates. the rations were given four times a day. weight gain linearly increased while feed conversion decreased, also in a linear fashion, according to crude protein levels. digestible energy only influenced weight gain whose best result was observed on animals fed diets containing 3,500 kcal digestyble energy. feed conversion was not affected by levels of digestible energy. a significant interaction occurred among cp and de levels for body composition in moisture, protein and lipids. levels of 35% of cp and 3,500 kcal of de provide better zootechnical results without affecting chemical composition of carcass of piavu?u fingerlings, so the suggested energy:protein ratio is 10 kcal/g cp.
Desempenho de juvenis de tilápia-do-nilo alimentados com ra??es contendo complexo enzimático
Signor, Arcangelo Augusto;Boscolo, Wilson Rogério;Bittencourt, Fábio;Feiden, Aldi;Gon?alves, Giovani Sampaio;Freitas, Jakeline Marcela Azambuja de;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000500006
Abstract: the aim of this study was to evaluate the inclusion of an enzimatic complex in diets for nile tilapia (oreochromis niloticus) on performance, carcass chemical composition as well as water quality. the experiment was performed in 62 days. it was used two hundred reverted fingerlings (14.57 ± 1.24 g) distributed in a complete randomized design in 20 500 l-tanks with four treatments and five replicates, considering a box with 10 fish as a experimental unit. the fish were fed diets containing 0; 0.033; 0.066 and 0.099% of enzimatic complex. the diets were processed in peletized way and supplied four times a day (8:00 a.m., 11:00 a.m., 2:00 p.m. and 5:00 p.m.) the ph average values, electric conductivity, dissolved oxygen, temperature, total phosphorus, ammonia and water nitrate of the cultivation were not influenced by the inclusion of the enzimatic complexin the diet. the inclusion of enzymatic complex in the diet did not affect weight gain, survival, and specific growing rate; however, it affected diet consumption and food conversion, whose values were greater for fish fed 0.066% of enzimatic complex diet. no differences were observed on dry matter, humidity, crude protein, mineral matter, calcium and phosphorus in the fish carcass, nevertheless, the ether extract decreased linearly as the level of enzymatic complex increased. the utilization of enzimatic complex (amylase, protease, cellulase, lipase, pectinase, xylanase, β-glucanase and phytase) at the level of 0.066% for juvenile nile tilapia (oreochromis niloticus) worsens food conversion but does not influence performance and body composition of the fish.
Efeito de bordas lineares na fenologia de espécies arbóreas zoocóricas em um remanescente de Mata Atlantica
Reznik, Gabriela;Pires, Jakeline Prata de Assis;Freitas, Leandro;
Acta Botanica Brasilica , 2012, DOI: 10.1590/S0102-33062012000100008
Abstract: the dispersal of seeds is one of the crucial phases of the life cycle of plants and plant phenology is among the factors that regulate the dispersal mode and activity of dispersers. in landscapes subject to fragmentation, the distribution of dispersal syndromes may be modified due to changes in flora composition and structure caused by edge effects, which may also change plant phenodynamics. in this study, the dispersal syndromes (zoochory, anemochory and autocory) of 162 tree species were identified and, for 57 of these species, this information was related to different measures of fruiting phenology (activity index, percentage of fournier intensity and intensity weighted by basal area) in environments of linear edges and forest interior. in all environments there was a predominance of animal dispersed species and, in general, the distribution of syndromes did not differ among environments. considering the three environments together, zoochorous and anemochorous species had continuous fruiting, while the autochorous fruiting pattern was intermittent. when the environments were analyzed separately, the fruiting phenodynamics of animal dispersed species (n = 44) differed among the three environments. the results indicate the existence of edge effects on fruiting phenology of species dispersed by animals, despite the absence of these effects in the distribution of dispersal syndromes. this suggests that the passage of electric transmission lines and gas pipelines in remnants of atlantic forest may affect the temporal dynamics of fruit availability for frugivores, with possible consequences for plant-seed disperser interactions, even when it does not lead to a decrease in the total supply of resources for these animals.
Soil Water Availability on Growth and Development of Safflower Plants  [PDF]
Edna Maria Bonfim-Silva, Ellen Cristina Alves de Anicésio, Jakeline Rosa de Oliveira, Helon Hébano de Freitas Sousa, Tonny José Araújo da Silva
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.613207
Abstract: Safflower (Carthamus tinctorius L.) is a promising culture to be widespread in Brazil. However, the lack of basic knowledge about cultivation techniques, such as water demand by the culture, is still obstacle to the expansion of safflower in that country. The objective was, then, to evaluate the effect of the soil water availability on growth and development of safflower in the Cerrado soil of Mato Grosso, Brazil. The experiment was conducted in a greenhouse, in a completely randomized design with five water availabilities (25%, 50%, 75%, 100% and 125% of the maximum water holding capacity in the soil) and four replications. Maintenance soil moisture was performed by gravimetric method with daily weighing of experimental units. The variables analyzed were: plant height, stem diameter, number of leaves, number of heads, heads diameter, dry mass of shoots, heads, and roots. The results were submitted to analysis of variance and regression test at 5% probability by SISVAR program. All variables set to the quadratic regression model, showing the best results in the water availability between 64% and 76%. Safflower is shown to be more sensitive to water stress with increased tolerance to water deficit in the soil than to flooding.
Soil Water Availabilities in the Content and Accumulation of Nitrogen and Chlorophyll Index in the Safflower  [PDF]
Edna Maria Bonfim-Silva, Ellen Cristina Alves de Anicésio, Jakeline Rosa de Oliveira, Helon Hébano de Freitas Sousa, Tonny José Araújo da Silva
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.614231
Abstract: The safflower (Carthamus tinctorius L.) is adapted to grow in adverse conditions, is tolerant to salinity and water deficit, however, its productivity increases when grown in areas with greater availability of water and in fertilized conditions, showing that the knowledge of crop management can bring income gains for producers. It is known that extreme conditions of soil moisture damage the crop development. Given this context, the objective was to evaluate the influence of water availability on the nutritional characteristics of the safflower. The experiment was conducted in a greenhouse in a completely randomized design with five water availabilities (25%, 50%, 75%, 100% and 125% of the maximum water holding capacity of the soil) in four replications. Maintaining soil moisture was performed by gravimetric method with daily weighing of experimental units. The variables analyzed were SPAD reading (chlorophyll content), concentration and accumulation of nitrogen in the shoot and in the sections. The results were submitted to analysis of variance and regression test at 5% probability by Sisvar program. There was adjusting of variables to linear and quadratic regression models. Water availabilities between 65% and 75% have greater potential to promote better nutrition for safflower plants. Both deficit and excess of water in the soil are detrimental to the absorption of nitrogen and reduce the chlorophyll content. Safflower is less tolerant to excess than to deficit of water.
Page 1 /179087
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.