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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Exigências proteicas de juvenis de Zebrafish (Danio rerio)

Sassi, Guilherme Eduardo January 2016 (has links)
Orientador: Luiz Edivaldo Pezzato / Resumo: O zebrafish, teleósteo de água doce, apresenta características biológicas e genéticas favoráveis para pesquisas biológicas, entretanto, faltam informações sobre sua exigência nutricional. Neste sentido este trabalho objetivou determinar sua exigência proteica. Utilizou-se 900 juvenis com 25,2±1,98 mg e 12,95 ± 1,91 mm, distribuídos em 30 aquários de 15 L de volume (30 peixes/aquário) num delineamento inteiramente casualizado com cinco tratamentos e seis repetições. As dietas semipurificadas foram formuladas para conter 27,6; 33,2; 38,2; 43,8 e 49,2% de proteína bruta (PB). Após 62 dias, constatou-se que o teor de 27.6% PB foi mais efetivo (p<0.01) para a taxa de eficiência proteica. Entretanto, não houve diferença entre tratamentos para peso, comprimento, taxa de eficiência alimentar e de crescimento especifico, consumo de ração e sobrevivência. Em relação a utilização dos nutrientes e composição corporal, a dieta contendo 38,2% de PB proporcionou melhores respostas (p<0.01) para retenção e taxa de retenção de nitrogênio, retenção de energia e quantidade de energia corporal. Pode-se concluir que, dieta contendo 27.6% PB foi adequada para obtenção da melhor taxa de eficiência proteica e desempenho zootécnico e 38,2% PB para utilização dos nutrientes e energia pelo zebrafish. / Abstract: The zebrafish, teleost freshwater, shows biological and genetic characteristics tha are propitious for biological research . However, there is a lack of information about their nutritional requirements, considering this the purpose of this study is to determine its protein requirement. Were used 900 fingerlings with 25,2±1,98 mg distributed into 30 fish tanks of 15 liters of capacity (30 fishes/fish tank) in a completely randomized with five treatment and six repetitions. The Semipurified diets were formulated to include 27.6; 33.2; 38.2; 43.8; 49,2% of crude protein (CP). After 62 days, it was found that the percentage of 27.6% CP were more efective (p<0.01) to protein efficiency ratio. Although there was no difference between treatments for weight, length, feed efficiency rate and specific growth, feed intake and survival. In relation the use of nutrients and body composition, diet containing 38.2% crude protein provided better responses (p<0,01) for retention and nitrogen retention rate, energy retention and amount of body energy. We can be concluded that a diet containing 27.6% CP was adequate to obtain the best protein efficiency ratio and growth performance and 38.2% CP for use of nutrients and energy for the zebrafish. / Mestre
2

Exigências proteicas de juvenis de Zebrafish (Danio rerio) / Protein requeriment of juvenile Zebrafish (Danio rerio)

Sassi, Guilherme Eduardo [UNESP] 15 June 2016 (has links)
Submitted by GUILHERME EDUARDO SASSI null (gui_sassi@hotmail.com) on 2016-07-07T23:52:04Z No. of bitstreams: 1 Impressão Final com Ficha.pdf: 1062820 bytes, checksum: d13b320c892331bf84bf85a95aa7b409 (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-07-12T12:46:39Z (GMT) No. of bitstreams: 1 sassi_ge_me_bot.pdf: 1062820 bytes, checksum: d13b320c892331bf84bf85a95aa7b409 (MD5) / Made available in DSpace on 2016-07-12T12:46:39Z (GMT). No. of bitstreams: 1 sassi_ge_me_bot.pdf: 1062820 bytes, checksum: d13b320c892331bf84bf85a95aa7b409 (MD5) Previous issue date: 2016-06-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O zebrafish, teleósteo de água doce, apresenta características biológicas e genéticas favoráveis para pesquisas biológicas, entretanto, faltam informações sobre sua exigência nutricional. Neste sentido este trabalho objetivou determinar sua exigência proteica. Utilizou-se 900 juvenis com 25,2±1,98 mg e 12,95 ± 1,91 mm, distribuídos em 30 aquários de 15 L de volume (30 peixes/aquário) num delineamento inteiramente casualizado com cinco tratamentos e seis repetições. As dietas semipurificadas foram formuladas para conter 27,6; 33,2; 38,2; 43,8 e 49,2% de proteína bruta (PB). Após 62 dias, constatou-se que o teor de 27.6% PB foi mais efetivo (p<0.01) para a taxa de eficiência proteica. Entretanto, não houve diferença entre tratamentos para peso, comprimento, taxa de eficiência alimentar e de crescimento especifico, consumo de ração e sobrevivência. Em relação a utilização dos nutrientes e composição corporal, a dieta contendo 38,2% de PB proporcionou melhores respostas (p<0.01) para retenção e taxa de retenção de nitrogênio, retenção de energia e quantidade de energia corporal. Pode-se concluir que, dieta contendo 27.6% PB foi adequada para obtenção da melhor taxa de eficiência proteica e desempenho zootécnico e 38,2% PB para utilização dos nutrientes e energia pelo zebrafish. / The zebrafish, teleost freshwater, shows biological and genetic characteristics tha are propitious for biological research . However, there is a lack of information about their nutritional requirements, considering this the purpose of this study is to determine its protein requirement. Were used 900 fingerlings with 25,2±1,98 mg distributed into 30 fish tanks of 15 liters of capacity (30 fishes/fish tank) in a completely randomized with five treatment and six repetitions. The Semipurified diets were formulated to include 27.6; 33.2; 38.2; 43.8; 49,2% of crude protein (CP). After 62 days, it was found that the percentage of 27.6% CP were more efective (p<0.01) to protein efficiency ratio. Although there was no difference between treatments for weight, length, feed efficiency rate and specific growth, feed intake and survival. In relation the use of nutrients and body composition, diet containing 38.2% crude protein provided better responses (p<0,01) for retention and nitrogen retention rate, energy retention and amount of body energy. We can be concluded that a diet containing 27.6% CP was adequate to obtain the best protein efficiency ratio and growth performance and 38.2% CP for use of nutrients and energy for the zebrafish.

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