Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807 |
Resumo: | The study was carried out with the objective of verifying which measures and morphometric ratios are more directly related to the body yield of Nile tilapia, Oreochromis niloticus, in two weight classes. Data were analyzed from 257 specimens of tilapia divided into two weight classes: p1 = 400 to 599 g and p2 = 600 to 900 g. The morphometric measurements standard length (SL), head length (HL), body height (BH) and body width (BW), and the ratios of these measures (HL / SL, BH / SL, BW / SL, HL / BH, BW / BH, BW / HL) were evaluated. The following body yields were calculated: carcass (RCAR), fillet (RFILE) and head (RCAB). The data were initially submitted to the "stepwise" procedure to eliminate problems of multicollinearity among the morphometric variables, then the correlations between the dependent variables (body yield) and the independent variables (measured and morphometric relationships) were calculated. Later, these correlations were divided into direct and indirect effects through path analysis, and the direct and indirect contributions of each variable measured in percentage terms. The morphometric ratio BW/HL, for both weight classes, was the variable most highly correlated and with the highest direct effect on RFILE and RCAB, showing to be the most important morphometric variable studied for tilapia carcass trait determination. |
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Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807path analysisevaluation of carcassanimal breedingmorphometryOreochromis niloticusThe study was carried out with the objective of verifying which measures and morphometric ratios are more directly related to the body yield of Nile tilapia, Oreochromis niloticus, in two weight classes. Data were analyzed from 257 specimens of tilapia divided into two weight classes: p1 = 400 to 599 g and p2 = 600 to 900 g. The morphometric measurements standard length (SL), head length (HL), body height (BH) and body width (BW), and the ratios of these measures (HL / SL, BH / SL, BW / SL, HL / BH, BW / BH, BW / HL) were evaluated. The following body yields were calculated: carcass (RCAR), fillet (RFILE) and head (RCAB). The data were initially submitted to the "stepwise" procedure to eliminate problems of multicollinearity among the morphometric variables, then the correlations between the dependent variables (body yield) and the independent variables (measured and morphometric relationships) were calculated. Later, these correlations were divided into direct and indirect effects through path analysis, and the direct and indirect contributions of each variable measured in percentage terms. The morphometric ratio BW/HL, for both weight classes, was the variable most highly correlated and with the highest direct effect on RFILE and RCAB, showing to be the most important morphometric variable studied for tilapia carcass trait determination. Editora da Universidade Estadual de Maringá2013-05-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/1980710.4025/actascianimsci.v35i4.19807Acta Scientiarum. Animal Sciences; Vol 35 No 4 (2013); 357-363Acta Scientiarum. Animal Sciences; v. 35 n. 4 (2013); 357-3631807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807/pdf_1Melo, Carlos Cicinato VieiraReis Neto, Rafael VilhenaCosta, Adriano CarvalhoFreitas, Rilke Tadeu Fonseca deFreato, Thiago ArchangeloSouza, Ulisses Nascimento deinfo:eu-repo/semantics/openAccess2024-05-17T13:04:37Zoai:periodicos.uem.br/ojs:article/19807Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2024-05-17T13:04:37Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
title |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
spellingShingle |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 Melo, Carlos Cicinato Vieira path analysis evaluation of carcass animal breeding morphometry Oreochromis niloticus |
title_short |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
title_full |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
title_fullStr |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
title_full_unstemmed |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
title_sort |
Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 |
author |
Melo, Carlos Cicinato Vieira |
author_facet |
Melo, Carlos Cicinato Vieira Reis Neto, Rafael Vilhena Costa, Adriano Carvalho Freitas, Rilke Tadeu Fonseca de Freato, Thiago Archangelo Souza, Ulisses Nascimento de |
author_role |
author |
author2 |
Reis Neto, Rafael Vilhena Costa, Adriano Carvalho Freitas, Rilke Tadeu Fonseca de Freato, Thiago Archangelo Souza, Ulisses Nascimento de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Melo, Carlos Cicinato Vieira Reis Neto, Rafael Vilhena Costa, Adriano Carvalho Freitas, Rilke Tadeu Fonseca de Freato, Thiago Archangelo Souza, Ulisses Nascimento de |
dc.subject.por.fl_str_mv |
path analysis evaluation of carcass animal breeding morphometry Oreochromis niloticus |
topic |
path analysis evaluation of carcass animal breeding morphometry Oreochromis niloticus |
description |
The study was carried out with the objective of verifying which measures and morphometric ratios are more directly related to the body yield of Nile tilapia, Oreochromis niloticus, in two weight classes. Data were analyzed from 257 specimens of tilapia divided into two weight classes: p1 = 400 to 599 g and p2 = 600 to 900 g. The morphometric measurements standard length (SL), head length (HL), body height (BH) and body width (BW), and the ratios of these measures (HL / SL, BH / SL, BW / SL, HL / BH, BW / BH, BW / HL) were evaluated. The following body yields were calculated: carcass (RCAR), fillet (RFILE) and head (RCAB). The data were initially submitted to the "stepwise" procedure to eliminate problems of multicollinearity among the morphometric variables, then the correlations between the dependent variables (body yield) and the independent variables (measured and morphometric relationships) were calculated. Later, these correlations were divided into direct and indirect effects through path analysis, and the direct and indirect contributions of each variable measured in percentage terms. The morphometric ratio BW/HL, for both weight classes, was the variable most highly correlated and with the highest direct effect on RFILE and RCAB, showing to be the most important morphometric variable studied for tilapia carcass trait determination. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-05-27 |
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://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807 10.4025/actascianimsci.v35i4.19807 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807 |
identifier_str_mv |
10.4025/actascianimsci.v35i4.19807 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807/pdf https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807/pdf_1 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Animal Sciences; Vol 35 No 4 (2013); 357-363 Acta Scientiarum. Animal Sciences; v. 35 n. 4 (2013); 357-363 1807-8672 1806-2636 reponame:Acta Scientiarum. Animal Sciences (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Animal Sciences (Online) |
collection |
Acta Scientiarum. Animal Sciences (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com |
_version_ |
1799315360781959168 |