L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade
Ano de defesa: | 2022 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Rurais |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Zootecnia
|
Departamento: |
Zootecnia
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/26233 |
Resumo: | The aim of this study was to evaluate the effects of low crude protein diets, supplemented or not with L-isoleucine, on the productive performance and eggs quality in commercial laying hens housed in conventional cage and cage-free systems from 80-to-100weeks-old, projecting alternatives for a more sustainable egg production. The laying hens were housed in conventional and cage-free systems. In total, 768 Isa Brown laying hens were distributed in two experiments: Experiment 1 – Cage-free (576 laying hens); and Experiment 2 - Conventional cages (192 laying hens). In each experiment, hens were randomly distributed in three dietary treatments: control (160 g/kg of CP), low crude protein (LCP; 135 g/kg of CP) and low crude protein + L-isoleucine (LCP + ILE; 135 g/kg of CP). The performance and egg quality parameters of the models were evaluated. Analysis of variance and the least squares method were performed based on Mixed procedure; means were compared through Tukey-test (P<0.05). Experiment 1, Hens subjected to the LCP + ILE treatment have shown intermediate feed intake and lower body weight, compared to animals subjected to other treatments (P<0.05). Experiment 2, no differences in body weight were observed between laying hens treated with LCP and LCP + ILE; however, hens treated with LCP +ILE recorded higher feed intake than those submitted to LCP diet. Egg quality (percentage and amount of albumen and eggshell) has increased in animals treated with diets supplemented with L-isoleucine (P<0.05), in both production systems. The inclusion of ILE in a balanced essential amino acids diet allowed the reduction of crude protein levels, maintaining the productive performance in old laying hens. In the current commercial scenario, where protein sources have a high cost, the use of diets with CP reduction and supplementation with crystalline amino acids becomes advantageous in relation to traditional high protein diets. In the present study, was observed that the inclusion of ILE improves feed conversion and egg shell quality, increases the albumen rate and reduces GHG emissions (climate change including land use change (GWP LUC) [kg CO2 eq.]) by 8% in comparison to control diet, reducing nutrient waste and making the system more ecologically sustainable. |
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2022-09-22T14:59:04Z2022-09-22T14:59:04Z2022-08-18http://repositorio.ufsm.br/handle/1/26233The aim of this study was to evaluate the effects of low crude protein diets, supplemented or not with L-isoleucine, on the productive performance and eggs quality in commercial laying hens housed in conventional cage and cage-free systems from 80-to-100weeks-old, projecting alternatives for a more sustainable egg production. The laying hens were housed in conventional and cage-free systems. In total, 768 Isa Brown laying hens were distributed in two experiments: Experiment 1 – Cage-free (576 laying hens); and Experiment 2 - Conventional cages (192 laying hens). In each experiment, hens were randomly distributed in three dietary treatments: control (160 g/kg of CP), low crude protein (LCP; 135 g/kg of CP) and low crude protein + L-isoleucine (LCP + ILE; 135 g/kg of CP). The performance and egg quality parameters of the models were evaluated. Analysis of variance and the least squares method were performed based on Mixed procedure; means were compared through Tukey-test (P<0.05). Experiment 1, Hens subjected to the LCP + ILE treatment have shown intermediate feed intake and lower body weight, compared to animals subjected to other treatments (P<0.05). Experiment 2, no differences in body weight were observed between laying hens treated with LCP and LCP + ILE; however, hens treated with LCP +ILE recorded higher feed intake than those submitted to LCP diet. Egg quality (percentage and amount of albumen and eggshell) has increased in animals treated with diets supplemented with L-isoleucine (P<0.05), in both production systems. The inclusion of ILE in a balanced essential amino acids diet allowed the reduction of crude protein levels, maintaining the productive performance in old laying hens. In the current commercial scenario, where protein sources have a high cost, the use of diets with CP reduction and supplementation with crystalline amino acids becomes advantageous in relation to traditional high protein diets. In the present study, was observed that the inclusion of ILE improves feed conversion and egg shell quality, increases the albumen rate and reduces GHG emissions (climate change including land use change (GWP LUC) [kg CO2 eq.]) by 8% in comparison to control diet, reducing nutrient waste and making the system more ecologically sustainable.Objetivou-se, com esse presente estudo, avaliar os efeitos de dietas com redução de proteína bruta, suplementadas ou não com L-isoleucina, sobre o desempenho produtivo e a qualidade dos ovos em poedeiras comerciais alojadas nos sistemas de gaiolas convencionais e livre de gaiolas de 80 a 100 semanas de idade, projetando alternativas para uma produção de ovos mais sustentável. As aves foram alojadas nos sistemas convencional e livre de gaiolas. No total, 768 poedeiras Isa Brown foram distribuídas em dois experimentos: Experimento 1 – Livre de gaiolas (576 poedeiras); e Experimento 2 – Gaiolas convencionais (192 poedeiras). Em cada experimento, as aves foram distribuídas aleatoriamente em três tratamentos dietéticos: controle (160g de PB/kg de dieta), baixa proteína bruta (LCP) (135g de PB/kg de dieta) e baixa proteína bruta + L-isoleucina (LCP + ILE; 135g de PB/kg de dieta). Os parâmetros de desempenho e qualidade dos ovos foram avaliados para os diferentes tratamentos. A análise da variância e o método dos quadrados mínimos foram realizadas com base no procedimento misto; as médias foram comparadas por meio do teste de Tukey (P<0,05). No experimento 1, as poedeiras submetidas ao LCP + ILE apresentaram ingestão de dieta intermediária e menor peso corporal, em comparação com os animais submetidos aos outros tratamentos (P<0,05). No experimento 2, não foram observadas diferenças no peso corporal entre as poedeiras tratadas com LCP e LCP + ILE; no entanto, as poedeiras tratadas com LCP + ILE registraram maior ingestão de dieta do que as submetidas a dieta LCP. A qualidade dos ovos (porcentagem e quantidade de albúmen e casca de ovo) aumentaram com a suplementação de L-isoleucina (P<0,05), em ambos os sistemas de produção. A inclusão de ILE em uma dieta equilibrada em aminoácidos essenciais, permitiu a redução dos níveis de proteína bruta, mantendo o desempenho produtivo de poedeiras de idade avançada. No atual cenário comercial, onde as fontes de proteínas estão com valor elevado, a utilização de dietas com redução de PB e suplementação com aminoácidos cristalinos se torna vantajosa em relação a dietas tradicionais com alta proteína. No presente estudo foi observado que a inclusão de ILE melhora a conversão alimentar e a qualidade da casca dos ovos, aumenta a taxa de albúmen, e reduz 8% da emissão de gases (mudanças climáticas (GWP LUC) [kg CO2 eq.]) em comparação com a dieta controle, reduzindo o desperdício de nutrientes e tornando o sistema mais ecologicamente sustentável.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em ZootecniaUFSMBrasilZootecniaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAminoácidosSustentabilidadeProdução de ovosQualidade de ovosSistemas de produçãoAmino acidsSustainabilityEgg productionEgg qualityProduction systemsCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAL-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idadeL-isoleucina contributing to protein reduction of commercial laying hens from 80 to 100 weeks oldinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisRosa, Alexandre Pireshttp://lattes.cnpq.br/5343585494040314Silva, Leila Picolli daCardinal, Kátia MariaFelix, Gisele AparecidaBarbosa, Nei André Arrudahttp://lattes.cnpq.br/6734058228163306Pilecco, Márcio50040000000260060060060060060060017f71f10-d0a7-45fc-b0cd-f3e798dfeaa421f02ad3-9a98-4eb0-acc7-850400e0f4496a92a23d-88fe-49b0-82ae-315721820ffe539d034a-7ebe-479a-beae-4075a1dc56e9a5beee7d-3284-45b3-8492-127404eb0b5477d3528d-9b08-4101-8f3f-d613e8b45550reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGZOOTECNIA_2022_PILECCO _MÁRCIO.pdfTES_PPGZOOTECNIA_2022_PILECCO _MÁRCIO.pdfTese de doutoradoapplication/pdf1580705http://repositorio.ufsm.br/bitstream/1/26233/1/TES_PPGZOOTECNIA_2022_PILECCO%20_M%c3%81RCIO.pdf8001ddc4a30daa72bea9e5d1d6da6cf8MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
dc.title.alternative.eng.fl_str_mv |
L-isoleucina contributing to protein reduction of commercial laying hens from 80 to 100 weeks old |
title |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
spellingShingle |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade Pilecco, Márcio Aminoácidos Sustentabilidade Produção de ovos Qualidade de ovos Sistemas de produção Amino acids Sustainability Egg production Egg quality Production systems CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
title_full |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
title_fullStr |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
title_full_unstemmed |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
title_sort |
L-isoleucina contribuindo para a redução proteica de poedeiras comerciais de 80 a 100 semanas de idade |
author |
Pilecco, Márcio |
author_facet |
Pilecco, Márcio |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Rosa, Alexandre Pires |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5343585494040314 |
dc.contributor.advisor-co1.fl_str_mv |
Silva, Leila Picolli da |
dc.contributor.referee1.fl_str_mv |
Cardinal, Kátia Maria |
dc.contributor.referee2.fl_str_mv |
Felix, Gisele Aparecida |
dc.contributor.referee3.fl_str_mv |
Barbosa, Nei André Arruda |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6734058228163306 |
dc.contributor.author.fl_str_mv |
Pilecco, Márcio |
contributor_str_mv |
Rosa, Alexandre Pires Silva, Leila Picolli da Cardinal, Kátia Maria Felix, Gisele Aparecida Barbosa, Nei André Arruda |
dc.subject.por.fl_str_mv |
Aminoácidos Sustentabilidade Produção de ovos Qualidade de ovos Sistemas de produção |
topic |
Aminoácidos Sustentabilidade Produção de ovos Qualidade de ovos Sistemas de produção Amino acids Sustainability Egg production Egg quality Production systems CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Amino acids Sustainability Egg production Egg quality Production systems |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The aim of this study was to evaluate the effects of low crude protein diets, supplemented or not with L-isoleucine, on the productive performance and eggs quality in commercial laying hens housed in conventional cage and cage-free systems from 80-to-100weeks-old, projecting alternatives for a more sustainable egg production. The laying hens were housed in conventional and cage-free systems. In total, 768 Isa Brown laying hens were distributed in two experiments: Experiment 1 – Cage-free (576 laying hens); and Experiment 2 - Conventional cages (192 laying hens). In each experiment, hens were randomly distributed in three dietary treatments: control (160 g/kg of CP), low crude protein (LCP; 135 g/kg of CP) and low crude protein + L-isoleucine (LCP + ILE; 135 g/kg of CP). The performance and egg quality parameters of the models were evaluated. Analysis of variance and the least squares method were performed based on Mixed procedure; means were compared through Tukey-test (P<0.05). Experiment 1, Hens subjected to the LCP + ILE treatment have shown intermediate feed intake and lower body weight, compared to animals subjected to other treatments (P<0.05). Experiment 2, no differences in body weight were observed between laying hens treated with LCP and LCP + ILE; however, hens treated with LCP +ILE recorded higher feed intake than those submitted to LCP diet. Egg quality (percentage and amount of albumen and eggshell) has increased in animals treated with diets supplemented with L-isoleucine (P<0.05), in both production systems. The inclusion of ILE in a balanced essential amino acids diet allowed the reduction of crude protein levels, maintaining the productive performance in old laying hens. In the current commercial scenario, where protein sources have a high cost, the use of diets with CP reduction and supplementation with crystalline amino acids becomes advantageous in relation to traditional high protein diets. In the present study, was observed that the inclusion of ILE improves feed conversion and egg shell quality, increases the albumen rate and reduces GHG emissions (climate change including land use change (GWP LUC) [kg CO2 eq.]) by 8% in comparison to control diet, reducing nutrient waste and making the system more ecologically sustainable. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-09-22T14:59:04Z |
dc.date.available.fl_str_mv |
2022-09-22T14:59:04Z |
dc.date.issued.fl_str_mv |
2022-08-18 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/26233 |
url |
http://repositorio.ufsm.br/handle/1/26233 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500400000002 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 600 600 600 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Zootecnia |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Zootecnia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
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Universidade Federal de Santa Maria (UFSM) |
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