Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.anifeedsci.2016.12.003 http://hdl.handle.net/11449/162752 |
Resumo: | The current feeding programs used for broiler breeder hens need information on how to make use of the genetic potential more efficiently by modelling the amino acid (AA) requirements. Thus, this study aimed to determine the model parameters for maximum nitrogen retention (NRmaxT), nitrogen maintenance requirement (NMR) and the efficiency of lysine utilization (bc(-1)) to determine the lysine (Lys) requirements of broiler breeder hens. Nitrogen balance trials were performed in two periods (I: 31-35 wks and II: 46-50 wks). Seven dietary treatments were used with eight replicates and one hen per cage; the treatments consisted of seven diets with protein levels ranging from 58.8 to 311.9 g/kg of feed, with Lys being limiting in the dietary protein (c = 3.91 g of Lys in 100g of CP). For each period, nitrogen intake (NI), nitrogen excretion (NEX), nitrogen in egg mass (NEM), nitrogen deposition (ND) and nitrogen retention (NR, NR = ND + NEM + NMR) were obtained in a N balance trial of 25 days. The NMR was calculated as the intersection point of the exponential curve between NEX and NI at NI = 0. The NRmaxT and b (slope related to protein quality) were estimated by the exponential fit between NR and NI. The Lys efficiency bc(-1) was obtained dividing b by c. The likelihood ratio test for the model parameters yielded 255 mg/BWkg0.67 for NMR, 0.000117 for b and 1684 mg/BWkg0.67 (period I) and 1484 mg/BWkg0.67 (period II) for NRmaxT. The necessary Lys intake dependent on NR and Lys efficiency was derived by the equation Lys = (InNRmaxT-ln(NRmaxT-NR))/(16 x bc(-1)). Lys intakes required to achieve 0.80 times the maximum potential (NRmaxT) were 915 mg and 876 mg in the period I and II, respectively. For broiler breeder hens, assuming 0.80 times the NRmaxT value and average efficiency of Lys utilization, 6.02 g/kg (31-35 wk) and 5.96 g/kg (46-50 wk) digestible dietary Lys were observed as optimal digestible Lys concentration in the diet (corresponding to 152 and 147 g of daily feed intake, respectively). Results of model calculations need verification in performance trials with evaluation of nitrogen deposition and varying dietary Lys efficiencies. (C) 2016 Elsevier B.V. All rights reserved. |
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Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilizationDilution techniqueExponential modelLikelihood testLysine requirementBroiler breeder hensThe current feeding programs used for broiler breeder hens need information on how to make use of the genetic potential more efficiently by modelling the amino acid (AA) requirements. Thus, this study aimed to determine the model parameters for maximum nitrogen retention (NRmaxT), nitrogen maintenance requirement (NMR) and the efficiency of lysine utilization (bc(-1)) to determine the lysine (Lys) requirements of broiler breeder hens. Nitrogen balance trials were performed in two periods (I: 31-35 wks and II: 46-50 wks). Seven dietary treatments were used with eight replicates and one hen per cage; the treatments consisted of seven diets with protein levels ranging from 58.8 to 311.9 g/kg of feed, with Lys being limiting in the dietary protein (c = 3.91 g of Lys in 100g of CP). For each period, nitrogen intake (NI), nitrogen excretion (NEX), nitrogen in egg mass (NEM), nitrogen deposition (ND) and nitrogen retention (NR, NR = ND + NEM + NMR) were obtained in a N balance trial of 25 days. The NMR was calculated as the intersection point of the exponential curve between NEX and NI at NI = 0. The NRmaxT and b (slope related to protein quality) were estimated by the exponential fit between NR and NI. The Lys efficiency bc(-1) was obtained dividing b by c. The likelihood ratio test for the model parameters yielded 255 mg/BWkg0.67 for NMR, 0.000117 for b and 1684 mg/BWkg0.67 (period I) and 1484 mg/BWkg0.67 (period II) for NRmaxT. The necessary Lys intake dependent on NR and Lys efficiency was derived by the equation Lys = (InNRmaxT-ln(NRmaxT-NR))/(16 x bc(-1)). Lys intakes required to achieve 0.80 times the maximum potential (NRmaxT) were 915 mg and 876 mg in the period I and II, respectively. For broiler breeder hens, assuming 0.80 times the NRmaxT value and average efficiency of Lys utilization, 6.02 g/kg (31-35 wk) and 5.96 g/kg (46-50 wk) digestible dietary Lys were observed as optimal digestible Lys concentration in the diet (corresponding to 152 and 147 g of daily feed intake, respectively). Results of model calculations need verification in performance trials with evaluation of nitrogen deposition and varying dietary Lys efficiencies. (C) 2016 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Paulista, FCAV UNESP, Dept Anim Sci, BR-14884900 Sao Paulo, BrazilUniv Estadual Paulista, FCAV UNESP, Aquaculture Ctr, BR-14884900 Sao Paulo, BrazilGeorg August Univ, Div Anim Nutr Physiol, Kellnerweg 6, D-37077 Gottingen, GermanyUniv Estadual Paulista, FCAV UNESP, Dept Anim Sci, BR-14884900 Sao Paulo, BrazilUniv Estadual Paulista, FCAV UNESP, Aquaculture Ctr, BR-14884900 Sao Paulo, BrazilFAPESP: 2013/07136-5Elsevier B.V.Universidade Estadual Paulista (Unesp)Georg August UnivDe Paula Dorigam, Juliano Cesar [UNESP]Sakomura, Nilva Kazue [UNESP]Soares, Leticia [UNESP]Kochenborger Fernandes, Joao Batista [UNESP]Suender, AngelaLiebert, Frank2018-11-26T17:29:48Z2018-11-26T17:29:48Z2017-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article29-38application/pdfhttp://dx.doi.org/10.1016/j.anifeedsci.2016.12.003Animal Feed Science And Technology. Amsterdam: Elsevier Science Bv, v. 226, p. 29-38, 2017.0377-8401http://hdl.handle.net/11449/16275210.1016/j.anifeedsci.2016.12.003WOS:000400262700004WOS000400262700004.pdf6152329000274858Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimal Feed Science And Technology0,937info:eu-repo/semantics/openAccess2024-04-09T15:29:47Zoai:repositorio.unesp.br:11449/162752Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:38:11.283246Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
title |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
spellingShingle |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization De Paula Dorigam, Juliano Cesar [UNESP] Dilution technique Exponential model Likelihood test Lysine requirement Broiler breeder hens |
title_short |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
title_full |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
title_fullStr |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
title_full_unstemmed |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
title_sort |
Modelling of lysine requirement in broiler breeder hens based on daily nitrogen retention and efficiency of dietary lysine utilization |
author |
De Paula Dorigam, Juliano Cesar [UNESP] |
author_facet |
De Paula Dorigam, Juliano Cesar [UNESP] Sakomura, Nilva Kazue [UNESP] Soares, Leticia [UNESP] Kochenborger Fernandes, Joao Batista [UNESP] Suender, Angela Liebert, Frank |
author_role |
author |
author2 |
Sakomura, Nilva Kazue [UNESP] Soares, Leticia [UNESP] Kochenborger Fernandes, Joao Batista [UNESP] Suender, Angela Liebert, Frank |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Georg August Univ |
dc.contributor.author.fl_str_mv |
De Paula Dorigam, Juliano Cesar [UNESP] Sakomura, Nilva Kazue [UNESP] Soares, Leticia [UNESP] Kochenborger Fernandes, Joao Batista [UNESP] Suender, Angela Liebert, Frank |
dc.subject.por.fl_str_mv |
Dilution technique Exponential model Likelihood test Lysine requirement Broiler breeder hens |
topic |
Dilution technique Exponential model Likelihood test Lysine requirement Broiler breeder hens |
description |
The current feeding programs used for broiler breeder hens need information on how to make use of the genetic potential more efficiently by modelling the amino acid (AA) requirements. Thus, this study aimed to determine the model parameters for maximum nitrogen retention (NRmaxT), nitrogen maintenance requirement (NMR) and the efficiency of lysine utilization (bc(-1)) to determine the lysine (Lys) requirements of broiler breeder hens. Nitrogen balance trials were performed in two periods (I: 31-35 wks and II: 46-50 wks). Seven dietary treatments were used with eight replicates and one hen per cage; the treatments consisted of seven diets with protein levels ranging from 58.8 to 311.9 g/kg of feed, with Lys being limiting in the dietary protein (c = 3.91 g of Lys in 100g of CP). For each period, nitrogen intake (NI), nitrogen excretion (NEX), nitrogen in egg mass (NEM), nitrogen deposition (ND) and nitrogen retention (NR, NR = ND + NEM + NMR) were obtained in a N balance trial of 25 days. The NMR was calculated as the intersection point of the exponential curve between NEX and NI at NI = 0. The NRmaxT and b (slope related to protein quality) were estimated by the exponential fit between NR and NI. The Lys efficiency bc(-1) was obtained dividing b by c. The likelihood ratio test for the model parameters yielded 255 mg/BWkg0.67 for NMR, 0.000117 for b and 1684 mg/BWkg0.67 (period I) and 1484 mg/BWkg0.67 (period II) for NRmaxT. The necessary Lys intake dependent on NR and Lys efficiency was derived by the equation Lys = (InNRmaxT-ln(NRmaxT-NR))/(16 x bc(-1)). Lys intakes required to achieve 0.80 times the maximum potential (NRmaxT) were 915 mg and 876 mg in the period I and II, respectively. For broiler breeder hens, assuming 0.80 times the NRmaxT value and average efficiency of Lys utilization, 6.02 g/kg (31-35 wk) and 5.96 g/kg (46-50 wk) digestible dietary Lys were observed as optimal digestible Lys concentration in the diet (corresponding to 152 and 147 g of daily feed intake, respectively). Results of model calculations need verification in performance trials with evaluation of nitrogen deposition and varying dietary Lys efficiencies. (C) 2016 Elsevier B.V. All rights reserved. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-04-01 2018-11-26T17:29:48Z 2018-11-26T17:29:48Z |
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/10.1016/j.anifeedsci.2016.12.003 Animal Feed Science And Technology. Amsterdam: Elsevier Science Bv, v. 226, p. 29-38, 2017. 0377-8401 http://hdl.handle.net/11449/162752 10.1016/j.anifeedsci.2016.12.003 WOS:000400262700004 WOS000400262700004.pdf 6152329000274858 |
url |
http://dx.doi.org/10.1016/j.anifeedsci.2016.12.003 http://hdl.handle.net/11449/162752 |
identifier_str_mv |
Animal Feed Science And Technology. Amsterdam: Elsevier Science Bv, v. 226, p. 29-38, 2017. 0377-8401 10.1016/j.anifeedsci.2016.12.003 WOS:000400262700004 WOS000400262700004.pdf 6152329000274858 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Animal Feed Science And Technology 0,937 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
29-38 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
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_ |
1808128837293178880 |