Growth curves of broilers fed different nutritional relationships using the Gompertz model
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4025/actascianimsci.v45i1.58287 http://hdl.handle.net/11449/246439 |
Resumo: | The study aimed to evaluate performance and growth curves of broilers fed different nutritional relations. A total of 1,440 Cobb-500 male day-old chicks were assigned to eight treatments in a 2 x 2 x 2 factorial arrangement with six replicates of 30 birds each. The main factors were nutritional density (control and high), lysine source (HCl and sulfate), and calcium pidolate (presence and absence). Analyses were made for body weight gain (BWG), and feed conversion rate (FCR) at 21, and 42 days of age. The growth curves were adjusted by weighing a bird per plot every three days. Data for BWG were tested by ANOVA to evaluate the effects of treatments and their interactions at 5% significance, and the Gompertz model was adjusted by NLS. Birds fed a high nutritional density had higher BWG and lower FCR. Calcium pidolate and different sources of lysine did not influence the FCR of broilers, however a triple interaction was evidenced for BWG at 1 to 42 days of age. The day with maximum gain adjusted by Gompertz of all treatments was at the 32nd day of age and the maximum weight (A) was around 5.85 kg. |
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Growth curves of broilers fed different nutritional relationships using the Gompertz modelcalcium pidolateGallus domesticusgrowth ratelysinenonlinear modelsnutritional densityThe study aimed to evaluate performance and growth curves of broilers fed different nutritional relations. A total of 1,440 Cobb-500 male day-old chicks were assigned to eight treatments in a 2 x 2 x 2 factorial arrangement with six replicates of 30 birds each. The main factors were nutritional density (control and high), lysine source (HCl and sulfate), and calcium pidolate (presence and absence). Analyses were made for body weight gain (BWG), and feed conversion rate (FCR) at 21, and 42 days of age. The growth curves were adjusted by weighing a bird per plot every three days. Data for BWG were tested by ANOVA to evaluate the effects of treatments and their interactions at 5% significance, and the Gompertz model was adjusted by NLS. Birds fed a high nutritional density had higher BWG and lower FCR. Calcium pidolate and different sources of lysine did not influence the FCR of broilers, however a triple interaction was evidenced for BWG at 1 to 42 days of age. The day with maximum gain adjusted by Gompertz of all treatments was at the 32nd day of age and the maximum weight (A) was around 5.85 kg.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho”, São PauloDepartamento de Zootecnia Universidade Federal de Lavras, Trevo rotatório professor Edmir Sá Santos, s/n, Cx. Postal 3.037, Minas GeraisDepartamento de Estatística Universidade Federal de Lavras, Minas GeraisFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista “Júlio de Mesquita Filho”, São PauloUniversidade Estadual Paulista (UNESP)Universidade Federal de Lavras (UFLA)de Freitas, Luís Filipe Villas-Bôas [UNESP]Bertechini, Antônio GilbertoClemente, Alisson Hélio SampaioFernandes, Felipe AugustoBauth, DiegoFernandes, Tales Jesus2023-07-29T12:40:59Z2023-07-29T12:40:59Z2023-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.4025/actascianimsci.v45i1.58287Acta Scientiarum - Animal Sciences, v. 45.1807-86721806-2636http://hdl.handle.net/11449/24643910.4025/actascianimsci.v45i1.582872-s2.0-85143603337Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Scientiarum - Animal Sciencesinfo:eu-repo/semantics/openAccess2023-07-29T12:40:59Zoai:repositorio.unesp.br:11449/246439Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T12:40:59Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
title |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
spellingShingle |
Growth curves of broilers fed different nutritional relationships using the Gompertz model de Freitas, Luís Filipe Villas-Bôas [UNESP] calcium pidolate Gallus domesticus growth rate lysine nonlinear models nutritional density |
title_short |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
title_full |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
title_fullStr |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
title_full_unstemmed |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
title_sort |
Growth curves of broilers fed different nutritional relationships using the Gompertz model |
author |
de Freitas, Luís Filipe Villas-Bôas [UNESP] |
author_facet |
de Freitas, Luís Filipe Villas-Bôas [UNESP] Bertechini, Antônio Gilberto Clemente, Alisson Hélio Sampaio Fernandes, Felipe Augusto Bauth, Diego Fernandes, Tales Jesus |
author_role |
author |
author2 |
Bertechini, Antônio Gilberto Clemente, Alisson Hélio Sampaio Fernandes, Felipe Augusto Bauth, Diego Fernandes, Tales Jesus |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal de Lavras (UFLA) |
dc.contributor.author.fl_str_mv |
de Freitas, Luís Filipe Villas-Bôas [UNESP] Bertechini, Antônio Gilberto Clemente, Alisson Hélio Sampaio Fernandes, Felipe Augusto Bauth, Diego Fernandes, Tales Jesus |
dc.subject.por.fl_str_mv |
calcium pidolate Gallus domesticus growth rate lysine nonlinear models nutritional density |
topic |
calcium pidolate Gallus domesticus growth rate lysine nonlinear models nutritional density |
description |
The study aimed to evaluate performance and growth curves of broilers fed different nutritional relations. A total of 1,440 Cobb-500 male day-old chicks were assigned to eight treatments in a 2 x 2 x 2 factorial arrangement with six replicates of 30 birds each. The main factors were nutritional density (control and high), lysine source (HCl and sulfate), and calcium pidolate (presence and absence). Analyses were made for body weight gain (BWG), and feed conversion rate (FCR) at 21, and 42 days of age. The growth curves were adjusted by weighing a bird per plot every three days. Data for BWG were tested by ANOVA to evaluate the effects of treatments and their interactions at 5% significance, and the Gompertz model was adjusted by NLS. Birds fed a high nutritional density had higher BWG and lower FCR. Calcium pidolate and different sources of lysine did not influence the FCR of broilers, however a triple interaction was evidenced for BWG at 1 to 42 days of age. The day with maximum gain adjusted by Gompertz of all treatments was at the 32nd day of age and the maximum weight (A) was around 5.85 kg. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:40:59Z 2023-07-29T12:40:59Z 2023-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4025/actascianimsci.v45i1.58287 Acta Scientiarum - Animal Sciences, v. 45. 1807-8672 1806-2636 http://hdl.handle.net/11449/246439 10.4025/actascianimsci.v45i1.58287 2-s2.0-85143603337 |
url |
http://dx.doi.org/10.4025/actascianimsci.v45i1.58287 http://hdl.handle.net/11449/246439 |
identifier_str_mv |
Acta Scientiarum - Animal Sciences, v. 45. 1807-8672 1806-2636 10.4025/actascianimsci.v45i1.58287 2-s2.0-85143603337 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Scientiarum - Animal Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965396569161728 |