Weight gain responses of laying-type pullets to methionine plus cystine intake
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1017/S1751731120001093 http://hdl.handle.net/11449/197865 |
Resumo: | Each individual in the population has a distinct maximum growth potential, and the growth curve may vary depending on the response to nutrient intake, growth phase and variability among animals. The present study aimed to (1) model weight gain (WG) response to methionine+cystine (Met+Cys) supply using different mathematical functions, (2) identify functions that better fit the growth responses of pullets, (3) determine the Met+Cys requirements that maximize WG based on breeding standards and (4) partition the Met+Cys requirements for WG and maintenance. Three trials were performed using 1448 laying-type pullets. We adopted a completely randomized design with eight treatments and six replicates. The first trial (2 to 6 weeks, P1) used 15 pullets per experimental unit. The second and third trials (8 to 12 weeks, P2; 14 to 18 weeks, P3) were used eight pullets per replicate. The Met+Cys levels were obtained using a dilution technique. The mathematical functions used to describe WG responses to Met+Cys intake were broken line, broken line with curvilinear ascendancy, Michaelis-Menten, saturation kinetics and three logistic and three exponential models. Models were selected using the Bayesian information criterion and evaluated by residual analysis. It was possible to model the responses using the studied functions. The best functions were obtained by logistic and sigmoidal models in P1 and P2, and with the broken line by the curvilinear ascendancy model in P3. The Met+Cys intake that determined the maximum potential for WG (WG(max)) in P1, P2 and P3 were 313, 381 and 318 mg/day, respectively. The Met+Cys requirements for WG were 20, 22 and 27 mg/g, and for maintenance were 214, 53 and 30 mg/kgBW(0.75)for P1, P2 and P3, respectively. |
id |
UNSP_c5a6fe38333de874028d8b1cc1706190 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/197865 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Weight gain responses of laying-type pullets to methionine plus cystine intakedilution techniqueefficiencymaintenancemodelsrequirementEach individual in the population has a distinct maximum growth potential, and the growth curve may vary depending on the response to nutrient intake, growth phase and variability among animals. The present study aimed to (1) model weight gain (WG) response to methionine+cystine (Met+Cys) supply using different mathematical functions, (2) identify functions that better fit the growth responses of pullets, (3) determine the Met+Cys requirements that maximize WG based on breeding standards and (4) partition the Met+Cys requirements for WG and maintenance. Three trials were performed using 1448 laying-type pullets. We adopted a completely randomized design with eight treatments and six replicates. The first trial (2 to 6 weeks, P1) used 15 pullets per experimental unit. The second and third trials (8 to 12 weeks, P2; 14 to 18 weeks, P3) were used eight pullets per replicate. The Met+Cys levels were obtained using a dilution technique. The mathematical functions used to describe WG responses to Met+Cys intake were broken line, broken line with curvilinear ascendancy, Michaelis-Menten, saturation kinetics and three logistic and three exponential models. Models were selected using the Bayesian information criterion and evaluated by residual analysis. It was possible to model the responses using the studied functions. The best functions were obtained by logistic and sigmoidal models in P1 and P2, and with the broken line by the curvilinear ascendancy model in P3. The Met+Cys intake that determined the maximum potential for WG (WG(max)) in P1, P2 and P3 were 313, 381 and 318 mg/day, respectively. The Met+Cys requirements for WG were 20, 22 and 27 mg/g, and for maintenance were 214, 53 and 30 mg/kgBW(0.75)for P1, P2 and P3, respectively.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Paulista, Coll Agr & Vet Sci, Dept Anim Sci, Via Acesso Prof Paulo Donato Castelane S-N, BR-14883900 Jaboticabal, SP, BrazilOhio State Univ, Dept Anim Sci, 2029 Fyffe Rd, Columbus, OH 43210 USALavinesp, Poultry Sci Lab, Via Acesso Prof Paulo Donato Castelane S-N, BR-14883900 Jaboticabal, SP, BrazilUniv Estadual Paulista, Coll Agr & Vet Sci, Dept Anim Sci, Via Acesso Prof Paulo Donato Castelane S-N, BR-14883900 Jaboticabal, SP, BrazilFAPESP: 2008/50557-3Cambridge Univ PressUniversidade Estadual Paulista (Unesp)Ohio State UnivLavinespSilva, E. P. [UNESP]Lima, M. B. [UNESP]Sakomura, N. K. [UNESP]Moraes, L. E.Peruzzi, N. J. [UNESP]2020-12-11T22:56:31Z2020-12-11T22:56:31Z2020-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleS294-S302http://dx.doi.org/10.1017/S1751731120001093Animal. Cambridge: Cambridge Univ Press, v. 14, p. S294-S302, 2020.1751-7311http://hdl.handle.net/11449/19786510.1017/S1751731120001093WOS:000553453300010Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimalinfo:eu-repo/semantics/openAccess2021-10-22T20:48:59Zoai:repositorio.unesp.br:11449/197865Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T20:48:59Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
title |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
spellingShingle |
Weight gain responses of laying-type pullets to methionine plus cystine intake Silva, E. P. [UNESP] dilution technique efficiency maintenance models requirement |
title_short |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
title_full |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
title_fullStr |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
title_full_unstemmed |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
title_sort |
Weight gain responses of laying-type pullets to methionine plus cystine intake |
author |
Silva, E. P. [UNESP] |
author_facet |
Silva, E. P. [UNESP] Lima, M. B. [UNESP] Sakomura, N. K. [UNESP] Moraes, L. E. Peruzzi, N. J. [UNESP] |
author_role |
author |
author2 |
Lima, M. B. [UNESP] Sakomura, N. K. [UNESP] Moraes, L. E. Peruzzi, N. J. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Ohio State Univ Lavinesp |
dc.contributor.author.fl_str_mv |
Silva, E. P. [UNESP] Lima, M. B. [UNESP] Sakomura, N. K. [UNESP] Moraes, L. E. Peruzzi, N. J. [UNESP] |
dc.subject.por.fl_str_mv |
dilution technique efficiency maintenance models requirement |
topic |
dilution technique efficiency maintenance models requirement |
description |
Each individual in the population has a distinct maximum growth potential, and the growth curve may vary depending on the response to nutrient intake, growth phase and variability among animals. The present study aimed to (1) model weight gain (WG) response to methionine+cystine (Met+Cys) supply using different mathematical functions, (2) identify functions that better fit the growth responses of pullets, (3) determine the Met+Cys requirements that maximize WG based on breeding standards and (4) partition the Met+Cys requirements for WG and maintenance. Three trials were performed using 1448 laying-type pullets. We adopted a completely randomized design with eight treatments and six replicates. The first trial (2 to 6 weeks, P1) used 15 pullets per experimental unit. The second and third trials (8 to 12 weeks, P2; 14 to 18 weeks, P3) were used eight pullets per replicate. The Met+Cys levels were obtained using a dilution technique. The mathematical functions used to describe WG responses to Met+Cys intake were broken line, broken line with curvilinear ascendancy, Michaelis-Menten, saturation kinetics and three logistic and three exponential models. Models were selected using the Bayesian information criterion and evaluated by residual analysis. It was possible to model the responses using the studied functions. The best functions were obtained by logistic and sigmoidal models in P1 and P2, and with the broken line by the curvilinear ascendancy model in P3. The Met+Cys intake that determined the maximum potential for WG (WG(max)) in P1, P2 and P3 were 313, 381 and 318 mg/day, respectively. The Met+Cys requirements for WG were 20, 22 and 27 mg/g, and for maintenance were 214, 53 and 30 mg/kgBW(0.75)for P1, P2 and P3, respectively. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-11T22:56:31Z 2020-12-11T22:56:31Z 2020-08-01 |
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/10.1017/S1751731120001093 Animal. Cambridge: Cambridge Univ Press, v. 14, p. S294-S302, 2020. 1751-7311 http://hdl.handle.net/11449/197865 10.1017/S1751731120001093 WOS:000553453300010 |
url |
http://dx.doi.org/10.1017/S1751731120001093 http://hdl.handle.net/11449/197865 |
identifier_str_mv |
Animal. Cambridge: Cambridge Univ Press, v. 14, p. S294-S302, 2020. 1751-7311 10.1017/S1751731120001093 WOS:000553453300010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Animal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
S294-S302 |
dc.publisher.none.fl_str_mv |
Cambridge Univ Press |
publisher.none.fl_str_mv |
Cambridge Univ Press |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1799964863529746432 |