Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3923/ijps.2012.361.367 http://hdl.handle.net/11449/73567 |
Resumo: | This experiment evaluated the growth of breast and leg muscle fibers of domestic fowl raised in two enclosure sizes (SE: Small Enclosure, 1.125 m2/10 birds; LE: Large Enclosure, 5.25 m2/10 birds). In breast muscles, the number of fibers per area decreased over time and higher values were observed in broilers housed in SE compared to LE. The fiber size increased with age and was greater in LE than SE at 56 days of age, suggesting greater hypertrophic growth of fibers in breast muscle for broilers maintained in LE. In leg muscles, the muscle cross-sectional area was greater for broilers raised in LE than SE at 56 days of age and decreased from 42 to 56 days of age in broilers raised in SE, suggesting leg muscle atrophy in these birds. The Fast Glycolytic (FG), Fast Oxidative-Glycolytic (FOG) and Slow Oxidative (SO) fibers grew until 42 days of age in both enclosure sizes. The area of FOG fibers was greater in broilers raised in LE than those in SE at 28 and 56 days of age; in LE-raised broilers, the SO area was greater at 28, 42 and 56 days of age, suggesting that the muscles of broilers housed in LE are more oxidative. The BW gain was greater for broilers raised in LE than SE, whereas BW, feed intake and feed conversion were not influenced by enclosure size. Thus, the enclosure space affected hypertrophic growth and metabolic characteristics of breast and leg muscle fibers. © Asian Network for Scientific Information, 2012. |
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Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowlBroilerEnclosure spaceFiber sizePectoralis majorSartoriusAvesThis experiment evaluated the growth of breast and leg muscle fibers of domestic fowl raised in two enclosure sizes (SE: Small Enclosure, 1.125 m2/10 birds; LE: Large Enclosure, 5.25 m2/10 birds). In breast muscles, the number of fibers per area decreased over time and higher values were observed in broilers housed in SE compared to LE. The fiber size increased with age and was greater in LE than SE at 56 days of age, suggesting greater hypertrophic growth of fibers in breast muscle for broilers maintained in LE. In leg muscles, the muscle cross-sectional area was greater for broilers raised in LE than SE at 56 days of age and decreased from 42 to 56 days of age in broilers raised in SE, suggesting leg muscle atrophy in these birds. The Fast Glycolytic (FG), Fast Oxidative-Glycolytic (FOG) and Slow Oxidative (SO) fibers grew until 42 days of age in both enclosure sizes. The area of FOG fibers was greater in broilers raised in LE than those in SE at 28 and 56 days of age; in LE-raised broilers, the SO area was greater at 28, 42 and 56 days of age, suggesting that the muscles of broilers housed in LE are more oxidative. The BW gain was greater for broilers raised in LE than SE, whereas BW, feed intake and feed conversion were not influenced by enclosure size. Thus, the enclosure space affected hypertrophic growth and metabolic characteristics of breast and leg muscle fibers. © Asian Network for Scientific Information, 2012.Department of Animal Morphology and Physiology Faculty of Agricultural and Veterinary Sciences São Paulo State University - UNESPDepartment of Animal Morphology and Physiology Faculty of Agricultural and Veterinary Sciences São Paulo State University - UNESPUniversidade Estadual Paulista (Unesp)Alves, Michaela F.R. [UNESP]Abe, Flavia RenataBoleli, Isabel C. [UNESP]2014-05-27T11:26:59Z2014-05-27T11:26:59Z2012-09-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article361-367http://dx.doi.org/10.3923/ijps.2012.361.367International Journal of Poultry Science, v. 11, n. 5, p. 361-367, 2012.1682-8356http://hdl.handle.net/11449/7356710.3923/ijps.2012.361.3672-s2.0-84865725707Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Poultry Science0,238info:eu-repo/semantics/openAccess2024-06-06T18:42:27Zoai:repositorio.unesp.br:11449/73567Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:11:50.359915Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
title |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
spellingShingle |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl Alves, Michaela F.R. [UNESP] Broiler Enclosure space Fiber size Pectoralis major Sartorius Aves |
title_short |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
title_full |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
title_fullStr |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
title_full_unstemmed |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
title_sort |
Influence of enclosure size on growth of breast and leg muscle fibers in domestic fowl |
author |
Alves, Michaela F.R. [UNESP] |
author_facet |
Alves, Michaela F.R. [UNESP] Abe, Flavia Renata Boleli, Isabel C. [UNESP] |
author_role |
author |
author2 |
Abe, Flavia Renata Boleli, Isabel C. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Alves, Michaela F.R. [UNESP] Abe, Flavia Renata Boleli, Isabel C. [UNESP] |
dc.subject.por.fl_str_mv |
Broiler Enclosure space Fiber size Pectoralis major Sartorius Aves |
topic |
Broiler Enclosure space Fiber size Pectoralis major Sartorius Aves |
description |
This experiment evaluated the growth of breast and leg muscle fibers of domestic fowl raised in two enclosure sizes (SE: Small Enclosure, 1.125 m2/10 birds; LE: Large Enclosure, 5.25 m2/10 birds). In breast muscles, the number of fibers per area decreased over time and higher values were observed in broilers housed in SE compared to LE. The fiber size increased with age and was greater in LE than SE at 56 days of age, suggesting greater hypertrophic growth of fibers in breast muscle for broilers maintained in LE. In leg muscles, the muscle cross-sectional area was greater for broilers raised in LE than SE at 56 days of age and decreased from 42 to 56 days of age in broilers raised in SE, suggesting leg muscle atrophy in these birds. The Fast Glycolytic (FG), Fast Oxidative-Glycolytic (FOG) and Slow Oxidative (SO) fibers grew until 42 days of age in both enclosure sizes. The area of FOG fibers was greater in broilers raised in LE than those in SE at 28 and 56 days of age; in LE-raised broilers, the SO area was greater at 28, 42 and 56 days of age, suggesting that the muscles of broilers housed in LE are more oxidative. The BW gain was greater for broilers raised in LE than SE, whereas BW, feed intake and feed conversion were not influenced by enclosure size. Thus, the enclosure space affected hypertrophic growth and metabolic characteristics of breast and leg muscle fibers. © Asian Network for Scientific Information, 2012. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-10 2014-05-27T11:26:59Z 2014-05-27T11:26:59Z |
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/10.3923/ijps.2012.361.367 International Journal of Poultry Science, v. 11, n. 5, p. 361-367, 2012. 1682-8356 http://hdl.handle.net/11449/73567 10.3923/ijps.2012.361.367 2-s2.0-84865725707 |
url |
http://dx.doi.org/10.3923/ijps.2012.361.367 http://hdl.handle.net/11449/73567 |
identifier_str_mv |
International Journal of Poultry Science, v. 11, n. 5, p. 361-367, 2012. 1682-8356 10.3923/ijps.2012.361.367 2-s2.0-84865725707 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Poultry Science 0,238 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
361-367 |
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_ |
1808129498500038656 |