ABSTRACT In order to optimize the performance and reduce costs in the larviculture of ornamental carp (Cyprinus carpio) in a recirculating aquaculture system, different feeding strategies were tested. For this, two experiments were carried out both under controlled conditions in a greenhouse, in a recirculating aquaculture system with a physical particle filter, biofilter, and filtering by ultra-violet irradiation. In the first experiment, measurements of Artemia nauplii were tested in the initial exogenous feeding of larvae at concentrations of 100, 200, 400, 600, 800 and 1,000 Artemia nauplii per larvae. In the following experiment, different protocols were tested for initial feeding for larvae. At this stage, were used: live food (Artemia nauplii) and inert (powder meal), used separately and simultaneously, and increases in the number of Artemia nauplii were also tested, offered at different times of cultivation. In the first experiment, the amount of 600 Artemia nauplii for larvae demonstrated to be the best option as it generated significant growth and the cost was less than that observed with the use of 800 and 1000 Artemia nauplii per larvae. The second experiment demonstrated that the feeding strategy with live food more commercial inert feed provided the best growth performance for ornamental carp larvae. The need to fix the amount of live food during the cultivation, probably due to the high specific growth rates observed during the larval stage also became evident.

A gota úrica é uma doença metabólica caracterizada pela deposição de cristais de urato e ácido úrico em tecidos do corpo, que pode acometer répteis, mamíferos e aves. Neste trabalho, relata-se um caso de achados post mortem compatíveis com gota úrica visceral em um exemplar de coruja suindara (Tyto alba) de vida livre. Macroscopicamente, o pericárdio apresentava-se completamente esbranquiçado, espesso e aderido ao miocárdio e o fígado e ambos os rins apresentavam áreas esbranquiçados sugerindo acúmulo de urato. A microscopia do tecido cardíaco e hepático revelou pericardite fibrinosa e perihepatite necrosante respectivamente. Congestão pulmonar e infiltrado inflamatório heterofílico multifocal no parênquima renal também foram visualizados. As alterações encontradas são compatíveis com as descritas na literatura para gota úrica visceral em aves, podendo até serem consideradas como lesões patognomônicas. Este é o primeiro relato de gota úrica visceral em um rapinante de vida livre no Brasil.

Gout, a metabolic disease characterized by deposition of uric acid crystals in tissue, can affect reptiles, mammals and birds. We studied a postmortem case of this disease in a free-living owl (Tyto alba). The pericardium was covered a whitish thick layer adhered to the myocardium, and the liver and both kidneys showed whitish areas. The microscopic examination of the heart and hepatic tissue revealed fibrinous pericarditis and necrotizing perihepatitis. Diffuse and multifocal heterophilic inflammatory infiltrate in the renal parenchyma pulmonary congestion were also displayed. The changes found are consistent with those described in the literature for uric visceral gout in birds and may even be considered as pathognomonic lesions. This is the first report of visceral gout uric on a predator-free life in Brazil

As membranas biológicas são biomateriais de origem orgânica, geralmente constituídas por colágeno. São utilizadas em diversos fins, dependendo da característica de cada material conservado. A túnica albugínea está sendo mais utilizada atualmente como uma membrana biológica e suas características ainda precisam ser estudadas. O objetivo deste trabalho foi avaliar as características estruturais relacionadas à biomecânica da túnica albugínea bovina conservada em glicerina 98% para utilização como membrana biológica. Para a análise da influência da idade do animal doador sobre a resistência da membrana, foram separados dois grupos. Foram testadas 34 amostras, sendo 17 amostras de membranas oriundas de animais com até um ano e onze meses de idade e o mesmo número de amostras oriundas de animais com idade entre dois e quatro anos. Sendo assim, formou-se um subgrupo com corpos de prova testados a partir de um corte transversal ao sentido longitudinal da membrana com 12 amostras, e outro constituído por corpos de prova testados a partir de cortes feitos na direção longitudinal da membrana, também com 12 amostras. Os resultados de resistência à tração não mostraram diferenças entre os grupos em nenhuma das comparações.

The biological membranes are biomaterials formed by structures of organic origin, usually collagen. They are used for many purposes depending on the characteristics of this material. The tunica albuginea is being used recently as a biological membrane and its characteristics however need to be studied and discussed. The aim of this study was to evaluate the structural features related to the biomechanics of bovine túnica albugínea preseved in 98% glycerin for use as a biological membrane. To analyze the influence of age on the resistance of the membrane, they were separated in two groups. There were tested 34 samples, 17 samples of membranes from animals up to one year and eleven months and 17 samples from animals with two until four years old. Two groups were formed in order to sense the correlation of membrane tension and resistance of the material. Thus was formed a sub-group with specimens tested from a longitudinal cross-section of the membrane with 12 samples and another sub-group composed of samples tested from cuts made in the longitudinal direction of the membrane with 12 samples. The results of tensile strength test did not show differences between groups in any of the comparisons.

A dog with multiple infection by D. renale in the abdominal cavity presented granular peritonitis with giant cells phagocytizing D. renale eggs. Hepatic and phrenic serositis associated to numerous eggs of the parasite immersed in fibrinous process were observed. Lungs presented D. renale eggs in the parenchyma, mononucleated cell infiltrates, edema, hemorrhage, congestion, atelectasia, emphysema, and thromboembolism. D. renale eggs were detected inside the center-lobular veins, auricular cavities, and superficial venous bed of the heart. These findings characterized an atypical dissemination pathway of eggs in erratic cycle.

Un perro con infección múltiple por D. renale en la cavidad abdominal presentó peritonitis granulomatosa con células gigantes fagocitando huevos de D. renale. Se pudo observar serositis hepática y frénica asociada a numerosos huevos del parásito inmersos en un proceso fibrinoso. Los pulmones presentaron huevos de D. renale en el parénquima, infiltrados de células mononucleares, edema, hemorragia, congestión, atelectasia, enfisema y tromboembolismo. Huevos de D. renale fueron detectados en el interior de la vena centro lobular, cavidades auriculares y lechos venosos superficiales del corazón. Estos hallazgos caracterizan una vía de diseminación atípica de los huevos en ciclo errático.