Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049
Autor(a) principal: | |
---|---|
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/16049 |
Resumo: | The selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits. Selection indexes III and VII are suggested due to simultaneous production and reproduction trait improvement. Indexes IV and VIII are recommended when higher rates of total solids and somatic cell count occur and would correspond to differentiated payment for the milk. |
id |
UEM-7_9704246fb7e25c5822d4ae7cf8d8b4f6 |
---|---|
oai_identifier_str |
oai:periodicos.uem.br/ojs:article/16049 |
network_acronym_str |
UEM-7 |
network_name_str |
Acta Scientiarum. Animal Sciences (Online) |
repository_id_str |
|
spelling |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049first calvingmilkbreeding goalsselection criteriatotal solidsThe selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits. Selection indexes III and VII are suggested due to simultaneous production and reproduction trait improvement. Indexes IV and VIII are recommended when higher rates of total solids and somatic cell count occur and would correspond to differentiated payment for the milk. Editora da Universidade Estadual de Maringá2013-02-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/1604910.4025/actascianimsci.v35i3.16049Acta Scientiarum. Animal Sciences; Vol 35 No 3 (2013); 321-328Acta Scientiarum. Animal Sciences; v. 35 n. 3 (2013); 321-3281807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16049/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16049/pdf_1Lopes, Fernando BritoSilva, Marcelo Corrêa daFioravanti, Maria Clorinda SoaresFacó, OlivardoMcManus, Conceptainfo:eu-repo/semantics/openAccess2024-05-17T13:04:32Zoai:periodicos.uem.br/ojs:article/16049Revistahttp://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:2024-05-17T13:04:32Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
title |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
spellingShingle |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 Lopes, Fernando Brito first calving milk breeding goals selection criteria total solids |
title_short |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
title_full |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
title_fullStr |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
title_full_unstemmed |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
title_sort |
Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049 |
author |
Lopes, Fernando Brito |
author_facet |
Lopes, Fernando Brito Silva, Marcelo Corrêa da Fioravanti, Maria Clorinda Soares Facó, Olivardo McManus, Concepta |
author_role |
author |
author2 |
Silva, Marcelo Corrêa da Fioravanti, Maria Clorinda Soares Facó, Olivardo McManus, Concepta |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lopes, Fernando Brito Silva, Marcelo Corrêa da Fioravanti, Maria Clorinda Soares Facó, Olivardo McManus, Concepta |
dc.subject.por.fl_str_mv |
first calving milk breeding goals selection criteria total solids |
topic |
first calving milk breeding goals selection criteria total solids |
description |
The selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits. Selection indexes III and VII are suggested due to simultaneous production and reproduction trait improvement. Indexes IV and VIII are recommended when higher rates of total solids and somatic cell count occur and would correspond to differentiated payment for the milk. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-02-08 |
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/16049 10.4025/actascianimsci.v35i3.16049 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16049 |
identifier_str_mv |
10.4025/actascianimsci.v35i3.16049 |
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/16049/pdf https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16049/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 3 (2013); 321-328 Acta Scientiarum. Animal Sciences; v. 35 n. 3 (2013); 321-328 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_ |
1799315360705413120 |