11 research outputs found
Qualidade de cortes congelados de tambaqui cultivado
The objective of this work was to determine the proximate composition, yield, the influence of frozen storage time on the quality, and the cut type x shelf life relation of rib, tenderloin and flitch cuts of tambaqui (Colossoma macropomum) reared in a fish farm, during 180 days of cold storage. The cuts were stored in polyethylene bags and frozen at -25oC. Sensory, physicochemical and microbiological analyses were carried out. The pH, total volatile basic nitrogen, and thiobarbituric acid-reactive substance values, as well as the results of the microbiological analyses, proved to be good indexes for freshness evaluation along the storage time. The cut rib was more susceptible to oxidation than the other cuts. However, the cuts remained appropriate for consumption during the experiment, under correct handling and good hygienic practices between harvest and storage
Performance and economic indicators of a large scale fish farming in Mato Grosso, Brazil
Relação proteína:carboidrato no desempenho e no metabolismo de híbridos de Pseudoplatystoma fasciatum (fêmea) X Leiarius marmoratus (macho)
Hematological responses of tambaqui Colossoma macropomum (Serrassalmidae) fed with diets supplemented with essential oil from Mentha piperita (Lamiaceae) and challenged with Aeromonas hydrophila
Avaliação de níveis protéicos para a nutrição de juvenis de matrinxã (Brycon cephalus) Evaluation of dietary protein contents for juvenile matrinxã (Brycon cephalus)
O matrinxã (Brycon cephalus - Gunther, 1869), é uma espécie de peixe nativa da bacia Amazônica que tem despertado grande interesse entre pesquisadores e piscicultores de todo o Brasil. A crescente demanda pelo cultivo desta espécie em ambiente controlado se deve, principalmente, à sua pronta adaptação ao cativeiro e à aceitação de alimentos artificiais, tanto de origem vegetal quanto animal, ao lado do seu elevado valor comercial. Contudo, para ser um empreendimento comercial bem sucedido, o alimento a ser fornecido a esta espécie deve atender a suas necessidades em proteína e permitir elevados ganhos de peso em períodos curtos. O experimento foi conduzido na estação de aqüicultura da Embrapa Amazônia Ocidental. Foram testados cinco níveis de proteína bruta (16, 19, 22, 25 e 28%) em dietas isocalóricas (EB = 390 kcal/100g) em um delineamento experimental inteiramente casualizado com três repetições para cada tratamento. Os resultados obtidos após 210 dias de estudo mostraram que a dieta contendo 28 % de proteína bruta promoveu o maior ganho de peso, melhor conversão alimentar e mais alto crescimento corporal entre os níveis testados, indicando que este nível protéico atendeu satisfatoriamente às necessidades de proteína para esta espécie, nas condições deste experimento.<br>Matrinxã (Brycon cephalus - Gunther, 1869) a native fish species from the Amazon basin, has been causing a great deal of interest among researchers and fish culturists all over Brazil. The rising demand for the culture of this species in controlled environment is mainly due, to its ready adaptation to captivity, the acceptance of manufactured feed made with either animal or plant ingredients, along with its high commercial value. However, for a successful commercial enterprise, feed must meet protein requirements of the fish to allow high weight gain in a short period. The experiment was carried out at Embrapa Amazônia Ocidental aquaculture station. Five crude protein concentration (16, 19, 22, 25 and 28 %) in isocaloric (EB = 390 kcal/100g) diets were tested in a fully randomized experimental design with three replicas. Results obtained at the end of 210 days of study showed that diets containing 28 % crude protein promoted the highest weight gain, growth and best feed conversion among tested diets, indicating that the protein requirements for this species can be satisfactorily achieved under experimental conditions