Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus)
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Brazilian Journal of Veterinary Research and Animal Science |
Texto Completo: | https://www.revistas.usp.br/bjvras/article/view/26825 |
Resumo: | The aim of this work was to evaluate the effects of three different diameters of crumble diets (0.25, 0.35 and 0.50 mm) on weight gain, growing, survival and sexual proportion to Nile tilapia (Oreochromis niloticus) larvae with 30, 60 and 90 days of age. In the first 30 days of age larvae were submitted to sex reversion with diets containing the hormone 17 α-methyltestosterone in a dosage of 60mg/kg of ration, respecting the different diameters and after this period, larvae were measured, weighed and counted for calculation of survival taxes. For the biometrical parameters as weight and total length a completely randomized design was used in subdivided installments with three treatments and three repetitions, considering installments the three diameters of diet and the sub installments, the three ages. In the end of this study, fish fed with diets of grain diameters 0.35 and 0.25 mm obtained the best results for weight gain (14.42 g and 13.36 g) and total length (83.13 mm and 82.72 mm), although these results were not statistically significant, and diets with grain diameters 0.50 and 0.35 mm resulted in 96,66 % and 93,33% of males, respectively, after histological analysis of gonads, without statistics differences between the treatments. |
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Brazilian Journal of Veterinary Research and Animal Science |
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Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus)Diferentes granulometrias de rações sobre o ganho de peso, crescimento, sobrevivência e reversão sexual para tilápias-do-Nilo (Oreochromis niloticus)Oreochromis niloticusFeedingMilling degreeLarvaeOreochromis niloticusAlimentaçãoDiâmetro de raçãoLarvasThe aim of this work was to evaluate the effects of three different diameters of crumble diets (0.25, 0.35 and 0.50 mm) on weight gain, growing, survival and sexual proportion to Nile tilapia (Oreochromis niloticus) larvae with 30, 60 and 90 days of age. In the first 30 days of age larvae were submitted to sex reversion with diets containing the hormone 17 α-methyltestosterone in a dosage of 60mg/kg of ration, respecting the different diameters and after this period, larvae were measured, weighed and counted for calculation of survival taxes. For the biometrical parameters as weight and total length a completely randomized design was used in subdivided installments with three treatments and three repetitions, considering installments the three diameters of diet and the sub installments, the three ages. In the end of this study, fish fed with diets of grain diameters 0.35 and 0.25 mm obtained the best results for weight gain (14.42 g and 13.36 g) and total length (83.13 mm and 82.72 mm), although these results were not statistically significant, and diets with grain diameters 0.50 and 0.35 mm resulted in 96,66 % and 93,33% of males, respectively, after histological analysis of gonads, without statistics differences between the treatments.O objetivo deste trabalho foi avaliar os efeitos de três diferentes granulometrias de rações fareladas (0,25, 0,35 e 0,50 mm) sobre o ganho de peso, crescimento, sobrevivência e proporção sexual para larvas de tilápia-do-Nilo (Oreochromis niloticus) aos 30, 60 e 90 dias de idade. Nos primeiros 30 dias de vida, as larvas foram revertidas com rações contendo hormônio 17 α-metiltestosterona na dosagem de 60 mg/kg de ração, respeitando-se as diferentes granulometrias e após este período, foram medidas, pesadas e contadas para cálculo da taxa de sobrevivência. Para as variáveis biométricas de peso e comprimento total, foi utilizado o delineamento inteiramente casualizado (DIC), em parcelas subdivididas, com três tratamentos e três repetições, considerando-se parcelas as três granulometrias de ração e subparcelas as três idades. Ao término do estudo, os peixes alimentados com as granulometrias 0,35 e 0,25 mm, obtiveram os melhores resultados para o ganho de peso (14,42 g e 13,36 g) e comprimento total (83,13 mm e 82,72 mm), não diferindo estatisticamente e as rações com diâmetros de grão 0,50 e 0,35 mm resultaram em 96,66% e 93,33% de machos, respectivamente, após análise histológica das gônadas, sem diferenças estatísticas entre os tratamentos.Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia2010-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bjvras/article/view/2682510.11606/issn.1678-4456.bjvras.2010.26825Brazilian Journal of Veterinary Research and Animal Science; Vol. 47 Núm. 4 (2010); 268-273Brazilian Journal of Veterinary Research and Animal Science; Vol. 47 No. 4 (2010); 268-273Brazilian Journal of Veterinary Research and Animal Science; v. 47 n. 4 (2010); 268-273Brazilian Journal of Veterinary Research and Animal Science; V. 47 N. 4 (2010); 268-2731678-44561413-9596reponame:Brazilian Journal of Veterinary Research and Animal Scienceinstname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)instacron:USPporhttps://www.revistas.usp.br/bjvras/article/view/26825/28608Makino, Lilian CristinaNakaghi, Laura Satiko OkadaPaes, Maria do Carmo FariaMalheiros, Euclides BragaKoberstein, Teresa Cristina Ribeiro Diasinfo:eu-repo/semantics/openAccess2020-06-23T04:10:30Zoai:revistas.usp.br:article/26825Revistahttps://www.revistas.usp.br/bjvrasPUBhttps://www.revistas.usp.br/bjvras/oaibjvras@usp.br1413-95961413-9596opendoar:https://www.revistas.usp.br/bjvras/index2023-01-12T16:43:06.217333Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP)false |
dc.title.none.fl_str_mv |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) Diferentes granulometrias de rações sobre o ganho de peso, crescimento, sobrevivência e reversão sexual para tilápias-do-Nilo (Oreochromis niloticus) |
title |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) |
spellingShingle |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) Makino, Lilian Cristina Oreochromis niloticus Feeding Milling degree Larvae Oreochromis niloticus Alimentação Diâmetro de ração Larvas |
title_short |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) |
title_full |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) |
title_fullStr |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) |
title_full_unstemmed |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) |
title_sort |
Different diameters of diets about weight gain, growing, survival and sex reversal to Nile tilapia (Oreochromis niloticus) |
author |
Makino, Lilian Cristina |
author_facet |
Makino, Lilian Cristina Nakaghi, Laura Satiko Okada Paes, Maria do Carmo Faria Malheiros, Euclides Braga Koberstein, Teresa Cristina Ribeiro Dias |
author_role |
author |
author2 |
Nakaghi, Laura Satiko Okada Paes, Maria do Carmo Faria Malheiros, Euclides Braga Koberstein, Teresa Cristina Ribeiro Dias |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Makino, Lilian Cristina Nakaghi, Laura Satiko Okada Paes, Maria do Carmo Faria Malheiros, Euclides Braga Koberstein, Teresa Cristina Ribeiro Dias |
dc.subject.por.fl_str_mv |
Oreochromis niloticus Feeding Milling degree Larvae Oreochromis niloticus Alimentação Diâmetro de ração Larvas |
topic |
Oreochromis niloticus Feeding Milling degree Larvae Oreochromis niloticus Alimentação Diâmetro de ração Larvas |
description |
The aim of this work was to evaluate the effects of three different diameters of crumble diets (0.25, 0.35 and 0.50 mm) on weight gain, growing, survival and sexual proportion to Nile tilapia (Oreochromis niloticus) larvae with 30, 60 and 90 days of age. In the first 30 days of age larvae were submitted to sex reversion with diets containing the hormone 17 α-methyltestosterone in a dosage of 60mg/kg of ration, respecting the different diameters and after this period, larvae were measured, weighed and counted for calculation of survival taxes. For the biometrical parameters as weight and total length a completely randomized design was used in subdivided installments with three treatments and three repetitions, considering installments the three diameters of diet and the sub installments, the three ages. In the end of this study, fish fed with diets of grain diameters 0.35 and 0.25 mm obtained the best results for weight gain (14.42 g and 13.36 g) and total length (83.13 mm and 82.72 mm), although these results were not statistically significant, and diets with grain diameters 0.50 and 0.35 mm resulted in 96,66 % and 93,33% of males, respectively, after histological analysis of gonads, without statistics differences between the treatments. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/26825 10.11606/issn.1678-4456.bjvras.2010.26825 |
url |
https://www.revistas.usp.br/bjvras/article/view/26825 |
identifier_str_mv |
10.11606/issn.1678-4456.bjvras.2010.26825 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/bjvras/article/view/26825/28608 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia |
dc.source.none.fl_str_mv |
Brazilian Journal of Veterinary Research and Animal Science; Vol. 47 Núm. 4 (2010); 268-273 Brazilian Journal of Veterinary Research and Animal Science; Vol. 47 No. 4 (2010); 268-273 Brazilian Journal of Veterinary Research and Animal Science; v. 47 n. 4 (2010); 268-273 Brazilian Journal of Veterinary Research and Animal Science; V. 47 N. 4 (2010); 268-273 1678-4456 1413-9596 reponame:Brazilian Journal of Veterinary Research and Animal Science instname:Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) instacron:USP |
instname_str |
Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Brazilian Journal of Veterinary Research and Animal Science |
collection |
Brazilian Journal of Veterinary Research and Animal Science |
repository.name.fl_str_mv |
Brazilian Journal of Veterinary Research and Animal Science - Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo (FMVZ-USP) |
repository.mail.fl_str_mv |
bjvras@usp.br |
_version_ |
1797051559494811648 |