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| Dias, Danielle de Carla; Furlaneto, Fernanda de Paiva Badiz; Sussel, Fábio Rosa; Tachibana, Leonardo; Gonçalves, Giovani Sampaio; Ishikawa, Carlos Massatoshi; Natori, Mariene Miyoko; Ranzani-Paiva, Maria José Tavares. |
| This work examines the economic advantages of probiotic use in the diet of Nile tilapia broodstock during the reproductive period. For this purpose, Bacillus subtilis was applied as a feed additive. The experimental design was completely randomized with three treatment groups: the T0 control (without probiotic), the T1 continuous probiotic intake, and the T2 alternate probiotic intake at a dose of 0.50 g kg-1 of feed (1010 CFU g-1) with four replicates. For the reproduction assay, 118 females and 48 males of Nile tilapia (proportion 4 males:9 females. hapa-1) (weight 527.65 g ± 185.98 g and length 30.16 cm ± 3.57 cm) were distributed into 12 hapas (3.5 × 2.0 × 1.5 m). Reproductive variables (spawning female percentage, egg production, and fry production)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus subtilis; Fish farming; Feed additive; Profitability; Spawning. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47960 |
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| Carraschi, Silvia Patrícia; Garlich, Nathália; Souza-Pollo, Andressa; Pereira, Daniela Isabel Brayer; Cruz, Claudinei da; Ranzani-Paiva, Maria José Tavares. |
| Successful disease treatment depends on molecular studies under indoor conditions with experimental infection protocols that facilitate understanding the disease and the drug`s efficacy. The internal transcribed spacer (ITS) region was sequenced from three isolates, which were identified as Saprolegnia aenigmatica. Subsequently, healthy fish were immunosuppressed with dexamethasone (1.2 mg kg-1) and descaled to the skin using a sharp scalpel. These individuals were isolated in individual aquariums maintained at 22°C. Individuals in one group were subcutaneously inoculated with 9,000 zoospores (DDZ treatment), a second group was exposed to oomycetes in water with three colonized baits (DDB), a third group was maintained in water without zoospores (DD), and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.06.03.00-0 oomycete; Zoosporangium; Oogonium; Saprolegniasis. Aquicultura. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/38186 |
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