Freshwater fish are an important source of protein, but they also contain other highly nutritive components such as fats. Polyunsaturated fatty acids (PUFAs) essential for normal growth, development and reproduction vertebrates. The antioxidant role vitamin E in cell membranes prevents acid cholesterol oxidation, thereby promoting PUFA subcellular particle stabilization. effects supplementation on the quality Nile tilapia (Oreochromis niloticus) carcass were investigated. experiments carried...

The present study was undertaken to examine the effects of oregano essential oil on growth performance, blood glucose levels, body composition and intestinal morphometry Nile tilapia reared in salinized water at 10 g/L for 64 days. experiment set up as a completely randomized design with five treatments four replicates, which control diet diets containing increasing concentrations (0.75, 1.5, 2.25 3.0 g/kg) were tested. best results parameters obtained inclusion level 0.75 g/kg, but did not...

Describing animal growth rate using non-linear models allows a detailed evaluation of behavior. Four were used to fit weight gain and total length data bullfrog (Lithobates catesbeianus) tadpoles, as follows: Gompertz, Y = A exp (-exp (-b (t-T))); Von Bertalanffy, (1 - K (-B t))³; Logistic, (1+ t))-1 Brody, Y=A t)). We 3,240 with average initial 0.044 g 12.79 mm, stage 25 Gosner. The measurements conducted every ten days on 10% the animals in tank. criteria select model that best described...

The objective was to evaluate the growth of basil (Origanum basilicum) and marjoram (Origanum majorana) using effluent from cultivation tilapia in aquaponic systems. A total 1000 post-larvae of Nile (Oreochromis niloticus) were distributed boxes 1.000 liters water inside greenhouse. The experimental plant assembled according a completely randomized design with two treatments: Treatment 1, basilicum), Treatment 2, (Origanum majorana), three repetition. For cultivation, plants placed platform....

Due to increasing demand of ingredients animal origin, studies on the availability nutrients in plant origin are worthy carnivorous species including bullfrog. This study aimed determine apparent digestibility coefficients (ADCs) amino acids (AAs) three as protein sources (soybean concentrate (SPC), corn gluten meal 60 % (CGM), soybean (SM)) and two energy (corn grain (CG) wheat bran (WB)) which commonly use bullfrog diets. A reference diet five test diets containing 69.5 diet, 30 each...

Melhorias no manejo alimentar devem ser implementadas na ranicultura, visando diminuir os efeitos indiretos da alimentação inadequada, resultando em melhores taxas de crescimento e deposição nutrientes, consequentemente obtendo animais melhor qualidade. O objetivo foi estabelecer curvas morfométrico girinos rã-touro sua nutrientes carcaça. Foram utilizados 6.480 estágio 25 Gosner, alimentados com dieta experimental (26,23% PD 32,68% PB) comercial (37,92% PB), oferecida ad libitum. modelo...

Knowledge of the growth animals is important so that zootechnical activity can be more accurate and sustainable. The objective this study was to describe live weight, development liver tissue fat body, leg growth, cumulative food intake bullfrogs during fattening phase using nonlinear models. A total 2,375 bullfrog froglets with an initial weight 7.03 ± 0.16 g were housed in five pens (12 m²). Ten samplings performed at intervals 14 days obtain variables studied. These data used estimate...

This study evaluated the quality of sperm cryopreserved with dimethylsulfoxide (DMSO) or methanol, Thailand tilapia (Oreochromis spp) fed diet different oilsources. Methods: For this, 80 breeding diets four sources oil (T1: linseed oil, T2: soybean T3: fish T4: corn oil). No significant difference was found for final weight, total length, rate and duration motility fresh in treatments. Significant differences were observed fish, treatment on relative to other cryoprotectant DMSO prior...

O objetivo deste trabalho foi determinar a deposição de nutrientes na carcaça girinos rã-touro (Lithobates catesbeianus) por meio modelo não linear. Foram utilizados 2.700 com peso médio inicial 0,039 g. Ração comercial farelada 55% proteína bruta fornecida ad libitum. Os animais foram pesados e avaliados cada dez dias para análise dos conteúdos bruta, extrato etéreo, água sais minerais. parâmetros do Gompertz estimados pelo método Gauss-Newton modificado, as taxas (g dia) em função tempo...

A piscicultura tem passado por sucessivas transformações, se consolidando como uma importante atividade no agronegócio nacional. Destaca-se principalmente a criação de tilápias, espécie exótica, que apresenta um pacote tecnológico definido. Contudo, pouca importância sido dada ao conhecimento do aspecto econômico desta atividade, identificando composição custo produção e os principais parâmetros influenciam na sua rentabilidade, gastos com ração, podem chegar 80% total produção. O presente...

The objective of this study was to compare the histopathological aspects liver free-living and farmed bullfrogs (Lithobates catesbeianus). Thirty samples were collected from young adult in states Minas Gerais Rio de Janeiro, Brazil. Marked blood congestion even hemorrhage a large number melanomacrophages observed most livers bullfrogs. Additionally, hepatocytes showed cytoplasmic eosinophilia some nuclear hypertrophy presence microvesicular steatosis; small foci infiltrates mononuclear cells...

Adequate methods for the determination of protein digestibility in bullfrogs are important understanding nutrient utilization. Therefore, this study evaluated two feces collection: intestinal dissection and fecal decantation, using cylindric-conical tanks. Frogs were fed with a commercial diet (45% crude protein) which was ground supplemented 0.5% chromium oxide III. The frogs fasted 48h before force-feeding (5% animal's live weight). For decantation method, animals sacrificed 36 h after...

A partir dos valores de digestibilidade alguns ingredientes foram propostas dietas, com diferentes níveis proteína e energia digestíveis, em esquema fatorial 3 x 3, destinadas a girinos rã-touro para avaliar o desempenho zootécnico. O experimento, duração 60 dias, foi conduzido 810 girinos, oriundos da mesma desova, distribuídos 27 caixas polipropileno, uma densidade 1girino/L. delineamento experimental um três digestível (27; 31 35%) (2.700; 2.800 2.900kcal/kg) réplicas. Os parâmetros...

In order to complement the histopathological study of juveniles and tadpoles bullfrog, Lithobathes catesbeianus, fed commercial diet used by frog farms in Rio de Janeiro, containing 40% crude protein, we performed necropsy histopathology liver establish a relationship between quality protein animal health. For this, it was twenty breeding male bullfrogs, with average weight 591.30 g (± 91.90 g) length 165.02 mm 14.22 mm), ten females 629.80 134.47 169.32 21.82 mm). The showed hyperemia, high...

The ability of frogs to digest dietary nutrients changes with growth, the animals becoming more or less demanding. objective this study was determine apparent digestibility coefficients protein, energy and ether extract 14 ingredients used in bullfrog diets (spray-dried blood meal, hydrolysed feather poultry by-product red cell concentrate, tilapia sardine fishmeal, salmon meat bone corn gluten soybean corn, wheat bran, soy protein concentrate oil). A total 2,325 bullfrogs (Lithobates...

ABSTRACT Despite the technological progress in frog farming, issues related to environment, biosafety, and use of technologies that minimise environmental impacts are frequently neglected by farmers. With goal developing a low-cost technology for reuse preservation water quality, an anaerobic filtering system combined with aerobic was implemented grow-out sector Frog Culture Research Unit at Fundação Instituto de Pesca do Estado Rio Janeiro (FIPERJ). The received effluent from six pens frogs...

A carne de rã apresenta alta digestibilidade, evidenciando a importí­¢ncia sua utilização em dietas especiais. O objetivo do estudo foi avaliar o potencial da nas hospitalares e recomendadas pelos médicos e, ainda, promover consumo. Foram realizadas entrevistas hospitais consultórios cidade Rio Janeiro (RJ, Brasil). pesquisa identificou que 72% dos entrevistados - médicos, nutricionistas responsáveis por cozinhas não conhecem as caracterí­­sticas nutricionais 50% acreditam há dificuldades na...

This study evaluated the influence of coastcross hay substrate hydration and equine fecal inoculum dilution on parameters fermentation microbiology in vitro essays. A 2 × factorial block design was used. The first factor 12 h before incubation or at time incubation, second with a nutrient solution weight: weight ratio 1:1 1:3. Degradation dry matter (DM), organic (OM), neutral detergent fiber (NDF) were 24, 48, 72 h. Microorganisms counted 24 after inoculation. ammoniacal nitrogen...

The development of diets that economically and ecologically meet the requirements bullfrogs (Lithobates catesbeianus) is important for frog farming. Therefore, objective this study was to determine apparent digestibility coefficients essential amino acids eight animal feed ingredients (poultry byproduct meal, meat bone salmon tilapia spray-dried blood powered red cells, feather meal sardine meal) used in bullfrogs. Additionally, limiting digestible were determined each ingredient. Bullfrogs...

The aims of this study were to investigate: 1) if the addition α-tocopherol (vitamin E) in three concentrations (0.3, 0.6 and 0.9 mM) is able preserve spermatozoa integrity after thawing 2) effect a-tocopherol supplementation on lipid peroxidation. Fifty four domestic cats used constituting 18 pools (3 per pool). Each pool was submitted at experimental groups: group 0 (control) – epididymal sperm frozen with a commercial Botucrio® extender; 0.3, extender supplemented mM a-tocopherol,...

Modeling the weight