Influence of rearing temperature and feed format in the development of the pendulous crop in broilers
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3382/ps/pey221 http://hdl.handle.net/11449/189845 |
Resumo: | The pendulous crop is characterized by excessive distension of the crop musculature, compromising the bird's productivity and welfare. The etiology is still unknown, but it is believed that factors related to the birds' handling might be related to its incidence. The study was conducted in 2 environmental chambers. One was maintained at a comfortable temperature, while the other was set at a much lower temperature. In each chamber, animals were divided into 16 experimental pens (8 received mash feed and the others received pelletized feed) with a density of 12 birds/m2 (an expected stocking density of 32- 36 kg/m2 after 42 d). The effects of rearing temperatures were evaluated in terms of broiler performance, specifically weight gain (kg), feed intake (kg), weekly feed intake (kg/wk), and feed conversion (kgfeed/kggrowth). The occurrences of pendulous crop were quantified every 2 d after the 14th day of rearing. Birds grown in thermal comfort and fed a pelletized ration were most susceptible (12%) to pendulous crop, followed by birds fed pelletized feed and reared in cold conditions (6.8%), and birds given mashed feed and reared at either temperature (about 3%). We concluded that feeding pelleted feed combined with warmer rearing temperatures may have caused some alteration of the gastrointestinal system of birds, which caused pendulous crop to be more prevalent. |
id |
UNSP_b53da1e5ea3399ddb3f8c46139f1f6e1 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/189845 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilerscold stressdigestive systemgut flowpendulous cropthermal comfortThe pendulous crop is characterized by excessive distension of the crop musculature, compromising the bird's productivity and welfare. The etiology is still unknown, but it is believed that factors related to the birds' handling might be related to its incidence. The study was conducted in 2 environmental chambers. One was maintained at a comfortable temperature, while the other was set at a much lower temperature. In each chamber, animals were divided into 16 experimental pens (8 received mash feed and the others received pelletized feed) with a density of 12 birds/m2 (an expected stocking density of 32- 36 kg/m2 after 42 d). The effects of rearing temperatures were evaluated in terms of broiler performance, specifically weight gain (kg), feed intake (kg), weekly feed intake (kg/wk), and feed conversion (kgfeed/kggrowth). The occurrences of pendulous crop were quantified every 2 d after the 14th day of rearing. Birds grown in thermal comfort and fed a pelletized ration were most susceptible (12%) to pendulous crop, followed by birds fed pelletized feed and reared in cold conditions (6.8%), and birds given mashed feed and reared at either temperature (about 3%). We concluded that feeding pelleted feed combined with warmer rearing temperatures may have caused some alteration of the gastrointestinal system of birds, which caused pendulous crop to be more prevalent.Department of Morphology and Animal Physiology São Paulo State University (UNESP)Cobb-VantressCollege of Engineering University of SaskatchewanDepartment of Morphology and Animal Physiology São Paulo State University (UNESP)Universidade Estadual Paulista (Unesp)Cobb-VantressUniversity of SaskatchewanAlmeida, Eduardo Alves [UNESP]Silva, Flávio Henrique AráujoCrowe, Trever GordonMacari, Marcos [UNESP]Furlan, Renato Luis [UNESP]2019-10-06T16:54:01Z2019-10-06T16:54:01Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3556-3563http://dx.doi.org/10.3382/ps/pey221Poultry Science, v. 97, n. 10, p. 3556-3563, 2018.1525-31710032-5791http://hdl.handle.net/11449/18984510.3382/ps/pey2212-s2.0-85055656869571355857292666908064094841596420000-0001-9549-0329Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPoultry Scienceinfo:eu-repo/semantics/openAccess2021-10-23T18:56:53Zoai:repositorio.unesp.br:11449/189845Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T18:56:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
title |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
spellingShingle |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers Almeida, Eduardo Alves [UNESP] cold stress digestive system gut flow pendulous crop thermal comfort |
title_short |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
title_full |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
title_fullStr |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
title_full_unstemmed |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
title_sort |
Influence of rearing temperature and feed format in the development of the pendulous crop in broilers |
author |
Almeida, Eduardo Alves [UNESP] |
author_facet |
Almeida, Eduardo Alves [UNESP] Silva, Flávio Henrique Aráujo Crowe, Trever Gordon Macari, Marcos [UNESP] Furlan, Renato Luis [UNESP] |
author_role |
author |
author2 |
Silva, Flávio Henrique Aráujo Crowe, Trever Gordon Macari, Marcos [UNESP] Furlan, Renato Luis [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Cobb-Vantress University of Saskatchewan |
dc.contributor.author.fl_str_mv |
Almeida, Eduardo Alves [UNESP] Silva, Flávio Henrique Aráujo Crowe, Trever Gordon Macari, Marcos [UNESP] Furlan, Renato Luis [UNESP] |
dc.subject.por.fl_str_mv |
cold stress digestive system gut flow pendulous crop thermal comfort |
topic |
cold stress digestive system gut flow pendulous crop thermal comfort |
description |
The pendulous crop is characterized by excessive distension of the crop musculature, compromising the bird's productivity and welfare. The etiology is still unknown, but it is believed that factors related to the birds' handling might be related to its incidence. The study was conducted in 2 environmental chambers. One was maintained at a comfortable temperature, while the other was set at a much lower temperature. In each chamber, animals were divided into 16 experimental pens (8 received mash feed and the others received pelletized feed) with a density of 12 birds/m2 (an expected stocking density of 32- 36 kg/m2 after 42 d). The effects of rearing temperatures were evaluated in terms of broiler performance, specifically weight gain (kg), feed intake (kg), weekly feed intake (kg/wk), and feed conversion (kgfeed/kggrowth). The occurrences of pendulous crop were quantified every 2 d after the 14th day of rearing. Birds grown in thermal comfort and fed a pelletized ration were most susceptible (12%) to pendulous crop, followed by birds fed pelletized feed and reared in cold conditions (6.8%), and birds given mashed feed and reared at either temperature (about 3%). We concluded that feeding pelleted feed combined with warmer rearing temperatures may have caused some alteration of the gastrointestinal system of birds, which caused pendulous crop to be more prevalent. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 2019-10-06T16:54:01Z 2019-10-06T16:54:01Z |
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/10.3382/ps/pey221 Poultry Science, v. 97, n. 10, p. 3556-3563, 2018. 1525-3171 0032-5791 http://hdl.handle.net/11449/189845 10.3382/ps/pey221 2-s2.0-85055656869 5713558572926669 0806409484159642 0000-0001-9549-0329 |
url |
http://dx.doi.org/10.3382/ps/pey221 http://hdl.handle.net/11449/189845 |
identifier_str_mv |
Poultry Science, v. 97, n. 10, p. 3556-3563, 2018. 1525-3171 0032-5791 10.3382/ps/pey221 2-s2.0-85055656869 5713558572926669 0806409484159642 0000-0001-9549-0329 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Poultry Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3556-3563 |
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_ |
1799965412233838592 |