Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.revista.sbz.org.br/artigo/index.php?idiom=en&artigo=168 http://hdl.handle.net/11449/65222 |
Resumo: | The objective of this work was to evaluate effect of fasting period in the last growing phase on performance and mortality of male broilers. Two thousand one-day old male chicks were distributed in five randomized blocks according to a 4x2 factorial. (Four feeding programs (FP): ad libitum or one of three fasting schedules: 8-12, 12-16 and 8-16; and two strains (S): Ross or Hubbard-Peterson). Fifty birds were used per replicate. Birds were raised under identical feed and management conditions until day 42. During the experimental period (days 43-56), average temperature, relative humidity and temperature-humidity index (THI) recorded at day and at night were 29.4°C, 57.7 % and 78.1; and 22.0°C, 73.1% and 67.4, respectively. No SxP interaction was observed for all characteristics studied. At day 56, the Ross broilers showed higher mean weight (3104 g), weight gain, WG (3059 g), feed/ gain ratio, FC (2.22) and production factor, PF (213), than the Hubbard-Peterson birds (3011, 2967, 2.28 and 194, respectively). During the experimental period, the Ross broilers showed higher WG (831 g) and FC (3.40) than the Hubbard-Peterson ones (770 and 3.67, respectively). Birds submitted to the 8-12 h fast showed higher feed intake (2864 g) than those that fasted during the 8-16 period (2690). No effect of P on mortality was observed, either considering the overall period (days 1-56) or the experimental period (days 43-56). Fasting in the last phase of rearing not aided by other practices failed to decrease heat stress effects on performance and mortality of male broilers. |
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Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidadeThe effect of fasting period in the last phase of rearing on performance and mortality of male broilersBroilersFastingHeat stressMortalityPerformanceThe objective of this work was to evaluate effect of fasting period in the last growing phase on performance and mortality of male broilers. Two thousand one-day old male chicks were distributed in five randomized blocks according to a 4x2 factorial. (Four feeding programs (FP): ad libitum or one of three fasting schedules: 8-12, 12-16 and 8-16; and two strains (S): Ross or Hubbard-Peterson). Fifty birds were used per replicate. Birds were raised under identical feed and management conditions until day 42. During the experimental period (days 43-56), average temperature, relative humidity and temperature-humidity index (THI) recorded at day and at night were 29.4°C, 57.7 % and 78.1; and 22.0°C, 73.1% and 67.4, respectively. No SxP interaction was observed for all characteristics studied. At day 56, the Ross broilers showed higher mean weight (3104 g), weight gain, WG (3059 g), feed/ gain ratio, FC (2.22) and production factor, PF (213), than the Hubbard-Peterson birds (3011, 2967, 2.28 and 194, respectively). During the experimental period, the Ross broilers showed higher WG (831 g) and FC (3.40) than the Hubbard-Peterson ones (770 and 3.67, respectively). Birds submitted to the 8-12 h fast showed higher feed intake (2864 g) than those that fasted during the 8-16 period (2690). No effect of P on mortality was observed, either considering the overall period (days 1-56) or the experimental period (days 43-56). Fasting in the last phase of rearing not aided by other practices failed to decrease heat stress effects on performance and mortality of male broilers.Faculdade de Med. Vet. e Zootecnia UNESP, Caixa Postal, 560, 18618-000 - Botucatu, SPAgroceres Ross Melhoramento G., Caixa Postal, 400, 13500-970 - Rio Claro, SPFaculdade de Med. Vet. e Zootecnia UNESP, Caixa Postal, 560, 18618-000 - Botucatu, SPUniversidade Estadual Paulista (Unesp)Agroceres Ross Melhoramento G.Sartori, José Roberto [UNESP]Gonzales, Elisabeth [UNESP]Mendonça de Souza, EduardoMendes, Ariel Antonio [UNESP]Wechsler, Francisco Stefano [UNESP]2014-05-27T11:18:17Z2014-05-27T11:18:17Z1997-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1192-1199application/pdfhttp://www.revista.sbz.org.br/artigo/index.php?idiom=en&artigo=168Revista Brasileira de Zootecnia, v. 26, n. 6, p. 1192-1199, 1997.0100-4859http://hdl.handle.net/11449/652222-s2.0-03461954672-s2.0-0346195467.pdf2714999125459575Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Zootecnia34360info:eu-repo/semantics/openAccess2024-09-09T13:01:50Zoai:repositorio.unesp.br:11449/65222Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-09T13:01:50Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade The effect of fasting period in the last phase of rearing on performance and mortality of male broilers |
title |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade |
spellingShingle |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade Sartori, José Roberto [UNESP] Broilers Fasting Heat stress Mortality Performance |
title_short |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade |
title_full |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade |
title_fullStr |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade |
title_full_unstemmed |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade |
title_sort |
Efeito do período de jejum na fase final de criação de frangos de corte machos sobre desempenho e mortalidade |
author |
Sartori, José Roberto [UNESP] |
author_facet |
Sartori, José Roberto [UNESP] Gonzales, Elisabeth [UNESP] Mendonça de Souza, Eduardo Mendes, Ariel Antonio [UNESP] Wechsler, Francisco Stefano [UNESP] |
author_role |
author |
author2 |
Gonzales, Elisabeth [UNESP] Mendonça de Souza, Eduardo Mendes, Ariel Antonio [UNESP] Wechsler, Francisco Stefano [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Agroceres Ross Melhoramento G. |
dc.contributor.author.fl_str_mv |
Sartori, José Roberto [UNESP] Gonzales, Elisabeth [UNESP] Mendonça de Souza, Eduardo Mendes, Ariel Antonio [UNESP] Wechsler, Francisco Stefano [UNESP] |
dc.subject.por.fl_str_mv |
Broilers Fasting Heat stress Mortality Performance |
topic |
Broilers Fasting Heat stress Mortality Performance |
description |
The objective of this work was to evaluate effect of fasting period in the last growing phase on performance and mortality of male broilers. Two thousand one-day old male chicks were distributed in five randomized blocks according to a 4x2 factorial. (Four feeding programs (FP): ad libitum or one of three fasting schedules: 8-12, 12-16 and 8-16; and two strains (S): Ross or Hubbard-Peterson). Fifty birds were used per replicate. Birds were raised under identical feed and management conditions until day 42. During the experimental period (days 43-56), average temperature, relative humidity and temperature-humidity index (THI) recorded at day and at night were 29.4°C, 57.7 % and 78.1; and 22.0°C, 73.1% and 67.4, respectively. No SxP interaction was observed for all characteristics studied. At day 56, the Ross broilers showed higher mean weight (3104 g), weight gain, WG (3059 g), feed/ gain ratio, FC (2.22) and production factor, PF (213), than the Hubbard-Peterson birds (3011, 2967, 2.28 and 194, respectively). During the experimental period, the Ross broilers showed higher WG (831 g) and FC (3.40) than the Hubbard-Peterson ones (770 and 3.67, respectively). Birds submitted to the 8-12 h fast showed higher feed intake (2864 g) than those that fasted during the 8-16 period (2690). No effect of P on mortality was observed, either considering the overall period (days 1-56) or the experimental period (days 43-56). Fasting in the last phase of rearing not aided by other practices failed to decrease heat stress effects on performance and mortality of male broilers. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-11-01 2014-05-27T11:18:17Z 2014-05-27T11:18:17Z |
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://www.revista.sbz.org.br/artigo/index.php?idiom=en&artigo=168 Revista Brasileira de Zootecnia, v. 26, n. 6, p. 1192-1199, 1997. 0100-4859 http://hdl.handle.net/11449/65222 2-s2.0-0346195467 2-s2.0-0346195467.pdf 2714999125459575 |
url |
http://www.revista.sbz.org.br/artigo/index.php?idiom=en&artigo=168 http://hdl.handle.net/11449/65222 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 26, n. 6, p. 1192-1199, 1997. 0100-4859 2-s2.0-0346195467 2-s2.0-0346195467.pdf 2714999125459575 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia 34360 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1192-1199 application/pdf |
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 |
repositoriounesp@unesp.br |
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1810021347537977344 |