RESUMO
The study was conducted to evaluate the liver tissue weight, body fat weight, the fatty somatic index and the liver somatic index of bullfrogs subjected to three photoperiod during the growing phase (initial 30 days) and finishing (60 days). The treatments were 16 h light and 8 h dark, 12 h of light and dark and 8 h light and 16 h dark. The experimental design was completely randomized design with three replications. We used 36 bullfrogs/m2 weighing from 22 to 28 g. The results were submitted to ANOVA and Tukey Test at 5% probability. Differences were found for the weight of body fat, liver tissue weight, liver somatic index and fatty somatic index the bullfrog to the treatments and the study periods and there is greater accumulation of energy to ninety days. The photoperiod did not influence body weight and fat weight of the liver tissue of bullfrog at the end of the fattening period and the difference fatty somatic index and liver somatic index were influenced by body weight of animals. Keywords: Liver somatic index, fatty somatic index, photoperiod.
O trabalho foi realizado com objetivo de avaliar o peso do tecido hepático, o peso do corpo adiposo, o índice lipossomático e o índice hepatosomático da rã-touro submetida a três fotoperíodos durante as fases de recria (30 dias iniciais) e engorda (60 dias). Os tratamentos foram 16 h de luz e 8 h de escuro, 12 h de luz e de escuro e 8 h de luz e 16 h de escuro. O delineamento experimental adotado foi o inteiramente casualizado com três repetições. Foram utilizados 36 rãs/m2 com peso entre 22 a 28g. Os resultados foram submetidos à análise de variância e pelo teste de Tukey a 5% de probabilidade. Foram encontrados diferenças para o peso de corpo adiposo, peso do tecido hepático, índice lipossomático e índice hepatossomático da rã-touro para os tratamentos e os períodos analisados e maior acúmulo de energia foi verificado aos noventa dias. O fotoperíodo não influenciou o peso do corpo adiposo e o peso do tecido hepático de rã-touro ao final da fase de engorda e a diferença do índice lipossomático e do índice hepatossomático foram influenciados pelo peso vivo dos animais. Palavras-Chave: Índice hepatossomático, índice lipossomático, fotoperíodo.
RESUMO
The objective of this work was to associate the energy digestible level of the diet to ovary development in post larval stage. Twenty-four female fish were used with weight and average initial length of 0.33 ± 0.11 g and 2.94 ± 0.39 cm, respectively. There were four treatments: 2600, 2700, 2800, and 2900 kcal of DE/kg of ration. Digestible energy levels influenced the final weight up to the estimated level of 2757.142kcal/kg. However, there was no significant effect for total length, gonad weight, and gonadossomatic index in females. The level of digestible energy did not provide better initial development of the ovary. This information may guide new experiments, to improve the conditions of cultivation, to value the activity on the economic sense as well as increase the number of fingerlings for aquaculture.
Objetivou-se associar o nível de energia digestível da dieta com o desenvolvimento ovariano em estagio pós-larval. Foram usadas 24 fêmeas com peso e comprimento médio inicial de 0,33 ± 0,11g e 2,94 ± 0,39cm, respectivamente. Foram realizados 4 tratamentos: 2600; 2700; 2800 e 2900kcal de ED/Kg de ração. No presente estudo, o nível de energia digestível influenciou no peso final até o nível estimado de 2757,142kcal/kg. Entretanto, não apresentou efeito significativo para comprimento total, peso da gônada e índice gonadossomático das fêmeas. O nível de energia digestível não proporcionou melhor desenvolvimento inicial do ovário. Essas informações poderão nortear novos experimentos, melhorar as condições de cultivo, valorizar a atividade no sentido econômico, assim como aumentar o número de alevinos destinados à aquicultura.
RESUMO
The objective of this work was to associate the energy digestible level of the diet to ovary development in post larval stage. Twenty-four female fish were used with weight and average initial length of 0.33 ± 0.11 g and 2.94 ± 0.39 cm, respectively. There were four treatments: 2600, 2700, 2800, and 2900 kcal of DE/kg of ration. Digestible energy levels influenced the final weight up to the estimated level of 2757.142kcal/kg. However, there was no significant effect for total length, gonad weight, and gonadossomatic index in females. The level of digestible energy did not provide better initial development of the ovary. This information may guide new experiments, to improve the conditions of cultivation, to value the activity on the economic sense as well as increase the number of fingerlings for aquaculture.
Objetivou-se associar o nível de energia digestível da dieta com o desenvolvimento ovariano em estagio pós-larval. Foram usadas 24 fêmeas com peso e comprimento médio inicial de 0,33 ± 0,11g e 2,94 ± 0,39cm, respectivamente. Foram realizados 4 tratamentos: 2600; 2700; 2800 e 2900kcal de ED/Kg de ração. No presente estudo, o nível de energia digestível influenciou no peso final até o nível estimado de 2757,142kcal/kg. Entretanto, não apresentou efeito significativo para comprimento total, peso da gônada e índice gonadossomático das fêmeas. O nível de energia digestível não proporcionou melhor desenvolvimento inicial do ovário. Essas informações poderão nortear novos experimentos, melhorar as condições de cultivo, valorizar a atividade no sentido econômico, assim como aumentar o número de alevinos destinados à aquicultura.
RESUMO
This study aimed to determine the minimum concentration of 2-phenoxyethanol for long-term exposure and evaluate the effect of inter-suture distance on wound healing in the goldfish Carassius auratus. Twenty adult goldfish (standard length = 12.4 ± 1.1 cm; weight = 58.7 ± 17.2 g) were anesthetized in 2-phenoxiethanol at 1.2 and placed in an anesthesia delivery system at the following concentrations of 2-phenoxiethanol: 0.0 (control); 0.1; 0.2; 0.3 and 0.4, and the duration of sedation was measured. Fifteen days later, fishes were anesthetized using the same procedure, and a 36 mm incision was performed in the ventro-lateral region. The incision was sutured using a simple-interrupted pattern with 3, 6 or 9 mm as inter-suture distances. Results demonstrated that 2-phenoxiethanol at 0.4 maintain the sedation for surgical procedures up to 60 minutes, and 9 mm as inter-suture distance optimized the wound healing in goldfish.
This study aimed to determine the minimum concentration of 2-phenoxyethanol for long-term exposure and evaluate the effect of inter-suture distance on wound healing in the goldfish Carassius auratus. Twenty adult goldfish (standard length = 12.4 ± 1.1 cm; weight = 58.7 ± 17.2 g) were anesthetized in 2-phenoxiethanol at 1.2 and placed in an anesthesia delivery system at the following concentrations of 2-phenoxiethanol: 0.0 (control); 0.1; 0.2; 0.3 and 0.4, and the duration of sedation was measured. Fifteen days later, fishes were anesthetized using the same procedure, and a 36 mm incision was performed in the ventro-lateral region. The incision was sutured using a simple-interrupted pattern with 3, 6 or 9 mm as inter-suture distances. Results demonstrated that 2-phenoxiethanol at 0.4 maintain the sedation for surgical procedures up to 60 minutes, and 9 mm as inter-suture distance optimized the wound healing in goldfish.
RESUMO
This study aimed to determine the minimum concentration of 2-phenoxyethanol for long-term exposure and evaluate the effect of inter-suture distance on wound healing in the goldfish Carassius auratus. Twenty adult goldfish (standard length = 12.4 ± 1.1 cm; weight = 58.7 ± 17.2 g) were anesthetized in 2-phenoxiethanol at 1.2 and placed in an anesthesia delivery system at the following concentrations of 2-phenoxiethanol: 0.0 (control); 0.1; 0.2; 0.3 and 0.4, and the duration of sedation was measured. Fifteen days later, fishes were anesthetized using the same procedure, and a 36 mm incision was performed in the ventro-lateral region. The incision was sutured using a simple-interrupted pattern with 3, 6 or 9 mm as inter-suture distances. Results demonstrated that 2-phenoxiethanol at 0.4 maintain the sedation for surgical procedures up to 60 minutes, and 9 mm as inter-suture distance optimized the wound healing in goldfish.
This study aimed to determine the minimum concentration of 2-phenoxyethanol for long-term exposure and evaluate the effect of inter-suture distance on wound healing in the goldfish Carassius auratus. Twenty adult goldfish (standard length = 12.4 ± 1.1 cm; weight = 58.7 ± 17.2 g) were anesthetized in 2-phenoxiethanol at 1.2 and placed in an anesthesia delivery system at the following concentrations of 2-phenoxiethanol: 0.0 (control); 0.1; 0.2; 0.3 and 0.4, and the duration of sedation was measured. Fifteen days later, fishes were anesthetized using the same procedure, and a 36 mm incision was performed in the ventro-lateral region. The incision was sutured using a simple-interrupted pattern with 3, 6 or 9 mm as inter-suture distances. Results demonstrated that 2-phenoxiethanol at 0.4 maintain the sedation for surgical procedures up to 60 minutes, and 9 mm as inter-suture distance optimized the wound healing in goldfish.