Feed digestibility and productive performance of bullfrogs raised in cages and fed in different periods and high frequency

Castro, Cecília Silva de; Argentim, D.; Novelli, Paula Kern; Costa, J.M.G. Sá da; Menezes, Camila Sousa Magela de; Neto, Armando Contin; Vieira, José Cavalcante de Souza; Padilha, Pedro de Magalhães; Agostinho, Cláudio Ângelo

doi:10.1016/j.aquaculture.2014.05.044

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…During the six month trials, animals were fed three times per week a pelleted diet made in the Laboratory of Animal Nutrition, composed of shrimp meal (66.0%), soy bean meal (30.25%), calcium phosphate (0.75%), beef fat (1%), multivitamin supplement (0.50%) and rice syrup (1.5%). The composition of this diet was based on studies performed in bullfrogs, Rana ( Lithobates ) catesbeiana (Silva et al., 2014; Mansano et al, 2016; Zhang et al, 2015). The nutrient composition of the diet is presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Gaining insights in the nutritional metabolism of amphibians: analyzing body nutrient profiles of the African clawed frog,Xenopus laevis

Brenes-Soto

Dierenfeld²,

Bosch

et al. 2019

PeerJ

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Whole bodies of Xenopus laevis (n = 19) were analysed for chemical composition and morphometrics. The nutrient profile (macronutrients, amino acids, fatty acids and minerals) was evaluated by sex; interactions among variables with body weights and lengths, and comparisons made with different species of marine and fresh water fish. Significant differences were found in morphometric measurements, water content, several minerals and fatty acids between sexes of X. laevis. Amino acid profiles differed in methionine, proline and cysteine, which could underlie different metabolic pathways in frogs when compared to fish. In addition, fatty acid profiles revealed more monounsaturated and n − 6 polyunsaturated fatty acids in frogs than in fish, more similar to values reported for terrestrial than aquatic vertebrates. Important interactions were also found between body measurements and fat, calcium, and phosphorus, as well as between essential and non-essential amino acids. The results indicate that frogs might have particular biochemical pathways for several nutrients, dependent on sex and linked to body weight, which ultimately could reflect specific nutrient needs.

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Section: Methodsmentioning

confidence: 99%

Gaining insights in the nutritional metabolism of amphibians: analyzing body nutrient profiles of the African clawed frog,Xenopus laevis

Brenes-Soto

Dierenfeld²,

Bosch

et al. 2019

PeerJ

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“…The development of frog farming worldwide in recent years has led to an increase in the number of studies designed to elaborate nutritionally adequate feeds with a better cost–benefit relationship (Tokur, Gürbüz, & Özyurt, ). Furthermore, significant improvements in feeding techniques have been studied (Casali, Moura, Lima, & Silva, ; Castro, Argentim et al., ; Castro, Ribeiro et al., ; Fenerick Junior & Stéfani, ; Oliveira et al., ). Other studies have evaluated the nutritional value of bullfrog feeds by determining the metabolizable energy of some ingredients used in these diets (Braga, Lima, Donzele, & Castro, ; Castro, Lima, Donzele, & Braga, ; Castro, Silva, Santos, Mondenesi, & Almeida, ; Rodrigues, Moura, & Lima, ).…”

Section: Introductionmentioning

confidence: 99%

Digestibility of nutrients and energy in ingredients for bullfrogs during different phases of development

et al. 2017

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The ability of frogs to digest dietary nutrients changes with growth, with the animals becoming more or less demanding. The objective of this study was to determine the apparent digestibility coefficients of protein, energy and ether extract of 14 ingredients used in bullfrog diets (spray-dried blood meal, hydrolysed feather meal, poultry by-product meal, red blood cell concentrate, tilapia by-product meal, sardine fishmeal, salmon fishmeal, meat and bone meal, corn gluten meal, soybean meal, corn, wheat bran, soy protein concentrate and soybean oil). A total of 2,325 bullfrogs (Lithobates catesbeianus) in different phases of development were used: early phase (mean weight of 30-50 g), growth phase (80-110 g) and finishing phase (150-200 g). Faeces were collected using the method of dissection. Marked differences in digestibility of the ingredients were observed between the different phases of frog development. Among the ingredients studied, salmon fishmeal and corn gluten meal showed good utilization of the protein (78.9% and 86.7%, respectively) and energy fraction (89.4% and 83.3%, respectively). The salmon fishmeal, poultry by-product meal, sardine fishmeal, soy protein concentrate, wheat bran and soybean oil exhibited good ether extract utilization (81.2%-92.8%), recommending their use in bullfrog diets. K E Y W O R D Sapparent digestibility coefficients, energy, ether extract, feeds, Lithobates catesbeianus, protein

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“…The improvement in feed conversion and the management in order to reduce food waste, result in improving water quality and reducing costs, contributing to the sustainability of the activity [30].…”

Section: Discussionmentioning

confidence: 99%

Treatment of Bullfrog Farming Wastewater in a Constructed Wetland

Borges¹,

Sipaúba-Tavares²

2017

JWARP

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The aim of this study was to install and assess the efficiency of a constructed wetland for wastewater treatment from bullfrog farming (Lithobates catesbeianus) at fattening growth phase. Water detention time was not controlled since wastewater input flow varied according to the biomass of animals maintained in stalls. The study was divided into two phases, with higher and lower bullfrog biomass respectively for phase I and II. A higher removal of nitrite, biochemical oxygen demand, and thermotolerant coliforms was observed at phase I whereas a higher removal of turbidity, nitrate, total phosphorus, total suspended solids, total dissolved solids, and chlorophyll a occurred at phase II. Wastewater treatments using constructed wetland systems with high organic load require a higher water detention time for a better load removal. The treatment effect was positive since this wastewater flowed directly into fishponds or streams, which might promote eutrophication. Thus, wastewater treatment is essential to minimize the impact caused by frog farming on receiving water bodies, promoting the sustainability of this activity in Brazil.

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Feed digestibility and productive performance of bullfrogs raised in cages and fed in different periods and high frequency

Cited by 7 publications

References 14 publications

Gaining insights in the nutritional metabolism of amphibians: analyzing body nutrient profiles of the African clawed frog,Xenopus laevis

Gaining insights in the nutritional metabolism of amphibians: analyzing body nutrient profiles of the African clawed frog,Xenopus laevis

Digestibility of nutrients and energy in ingredients for bullfrogs during different phases of development

Treatment of Bullfrog Farming Wastewater in a Constructed Wetland

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