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| Biller-Takahashi,Jaqueline Dalbello; Takahashi,Leonardo Susumu; Marzocchi-Machado,Cleni Mara; Zanuzzo,Fabio Sabbadin; Sabioni,Rafael Estevan; Urbinati,Elisabeth Criscuolo. |
| The objective of this study was to evaluate the methodology to establish the hemolytic activity of alternative complement pathway as an indicator of the innate immunity in Brazilian fish pacu (Piaractus mesopotamicus), in addition to verifying the influence of β-glucan as an immunostimulant. Fish were fed with diets containing 0, 0.1 and 1% β-glucan, during seven days, and then inoculated with Aeromonas hydrophila. Seven days after the challenge, they were bled for serum extraction. The methodology consisted of a kinetic assay that allows calculating the required time for serum proteins of the complement to promote 50% lysis of a rabbit red blood cell suspension. The method developed in mammals was successfully applied for pacu and determined that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: A. hydrophila; Β-glucan; Immune response; Pacu. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200001 |
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| Takahashi,Leonardo Susumu; Gonçalves,Flavio Daolio; Abreu,Janessa Sampaio de; Martins,Maria Inez Espagnoli Geraldo; Ferreira,Antonio Carlos Manduca. |
| Brazilian fish farms presented an accelerated development during the early 90's, mainly because of the increase in fee-fishing operations. To meet the demand of this market, fish production and supply became excessive and, as a consequence, the number of fee-fishing operations, farmers and the final selling price, decreased. This study analyzes the technical aspects, production cost, profitability and economic viability of the production of piauçu (L. macrocephalus) in ponds, based on information from a rural property. Feeding and fingerling costs amount to approximately 47.1% of the total production cost, representing together with the final selling price the most important factor affecting profitability. The payback period was 8.3 years, the liquid... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Costs; Profitability; Economic analysis; Sensitivity analyses; Fish farming. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000200017 |
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| Palma,Eduardo Henrique da; Takahashi,Leonardo Susumu; Dias,Luciana Thie Seki; Gimbo,Rodrigo Yukihiro; Kojima,Juliana Tomomi; Nicodemo,Daniel. |
| O objetivo deste estudo foi avaliar a ocorrência de resposta compensatória no desempenho produtivo de juvenis de tilápia do Nilo Oreochromis niloticus, linhagem GIFT, submetidos a diferentes estratégias alimentares. Foram utilizados 135 juvenis de tilápia, distribuídos em nove tanques de polietileno de 100L cada. As estratégias testadas foram: grupo controle (alimentado todo dia), grupo alimentado por cinco dias seguidos de dois dias de restrição de alimento (5A/2R) e grupo alimentado por quatro dias seguidos de três dias de restrição de alimento (4A/3R). Foram avaliados parâmetros físico-químicos da água e de desempenho produtivo. Os resultados foram submetidos à análise de variância, e as médias foram comparadas pelo teste Tukey, a 5% de probabilidade. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Privação alimentar; Estratégia alimentar; Oreochromis niloticus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000200026 |
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