Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4995/wrs.2006.563 http://hdl.handle.net/11449/35161 |
Resumo: | The objective was to evaluate the effects of genetic group and age on growth, carcass, and meat traits of rabbits. A total of 144 straightbred Botucatu and White German Giant x Botucatu crossbred rabbits were involved. Rabbits were weaned at 35 d and sequentially, slaughtered, four per genetic group x sex combination, at: 42, 49, 56, 63, 70, 77, 84 and 91 d. A 2x2 factorial arrangement was employed in a completely randomized design with repeated measures for growth traits, and a split-plot for carcass and meat traits. Crossbred rabbits were heavier (2032 vs. 1962 g; P < 0.01), consumed more feed (143.5 vs. 131.0 g/d; P < 0.01), and presented higher slaughter weight (2169 vs. 2093 g, P=0.02) and dressing percentage (59.0 vs. 58.2%; P=0.07) than straightbreds throughout the experiment. No difference between genetic groups was detected for feed conversion and empty gastrointestinal weight corrected for slaughter weight (SW). Crossbreds showed higher skin weight (308.2 vs. 299.7 g, P = 0.06) and distal parts of leg weight (75.7 vs. 71.4 g; P < 0.01), both corrected for SW. No genetic group effect was detected on dissectible fat and hind part weights. Chilled commercial carcass (1284 vs. 1229 g: P=0.02), chilled reference carcass (1036 vs. 1000 g, P=0.06), fore part (297.9 vs. 283.3 g; P=0.01) and loin (308.7 vs. 295.5 g; P=0.05) were heavier in crossbreds than in straightbreds, but these differences were attributed to differences in SW. Uncorrected weights of head, kidneys, liver and thoracic viscera were higher in the crossbred group, but only head (116.6 vs. 113.6 g; P=0.06) and thoracic viscera (30.4 vs. 28.6 g; P=0.01) were, in fact, proportionately heavier in crossbreds than in straightbreds. No effect of genetic group was detected on meat to bone ratio, muscle ultimate pH and chemical composition of the Longissimus dorsi muscle. All traits, except for ash and fat contents of the Longissimus muscle, showed age effects (P < 0.01). Crossbreeding may be recommended for the production of whole commercial carcasses, but it is not clearly advantageous for the production of retail cuts. Slaughter should take place between 63 and 70 d of age for both genetic groups. |
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Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbitsrabbitcarcass traitsdressing percentagegrowthmuscle pHuretail cutsThe objective was to evaluate the effects of genetic group and age on growth, carcass, and meat traits of rabbits. A total of 144 straightbred Botucatu and White German Giant x Botucatu crossbred rabbits were involved. Rabbits were weaned at 35 d and sequentially, slaughtered, four per genetic group x sex combination, at: 42, 49, 56, 63, 70, 77, 84 and 91 d. A 2x2 factorial arrangement was employed in a completely randomized design with repeated measures for growth traits, and a split-plot for carcass and meat traits. Crossbred rabbits were heavier (2032 vs. 1962 g; P < 0.01), consumed more feed (143.5 vs. 131.0 g/d; P < 0.01), and presented higher slaughter weight (2169 vs. 2093 g, P=0.02) and dressing percentage (59.0 vs. 58.2%; P=0.07) than straightbreds throughout the experiment. No difference between genetic groups was detected for feed conversion and empty gastrointestinal weight corrected for slaughter weight (SW). Crossbreds showed higher skin weight (308.2 vs. 299.7 g, P = 0.06) and distal parts of leg weight (75.7 vs. 71.4 g; P < 0.01), both corrected for SW. No genetic group effect was detected on dissectible fat and hind part weights. Chilled commercial carcass (1284 vs. 1229 g: P=0.02), chilled reference carcass (1036 vs. 1000 g, P=0.06), fore part (297.9 vs. 283.3 g; P=0.01) and loin (308.7 vs. 295.5 g; P=0.05) were heavier in crossbreds than in straightbreds, but these differences were attributed to differences in SW. Uncorrected weights of head, kidneys, liver and thoracic viscera were higher in the crossbred group, but only head (116.6 vs. 113.6 g; P=0.06) and thoracic viscera (30.4 vs. 28.6 g; P=0.01) were, in fact, proportionately heavier in crossbreds than in straightbreds. No effect of genetic group was detected on meat to bone ratio, muscle ultimate pH and chemical composition of the Longissimus dorsi muscle. All traits, except for ash and fat contents of the Longissimus muscle, showed age effects (P < 0.01). Crossbreeding may be recommended for the production of whole commercial carcasses, but it is not clearly advantageous for the production of retail cuts. Slaughter should take place between 63 and 70 d of age for both genetic groups.Univ Estadual Paulista Julio Mesquita Filho, Fac Med Vet & Zootecnia, Dpt Prod & Explorac Anim, Botucatu, SP, BrazilUniv Estadual Paulista Julio Mesquita Filho, Fac Ciências Agron, Dpt Gestao & Tecnol Agroind, Botucatu, SP, BrazilUniv Estadual Paulista Julio Mesquita Filho, Fac Med Vet & Zootecnia, Dpt Prod & Explorac Anim, Botucatu, SP, BrazilUniv Estadual Paulista Julio Mesquita Filho, Fac Ciências Agron, Dpt Gestao & Tecnol Agroind, Botucatu, SP, BrazilUniversidad Politecnica de ValenciaUniversidade Estadual Paulista (Unesp)Bianospino, E.Wechsler, F. S.Fernandes, S.Roça, Roberto de Oliveira [UNESP]Moura, A. S. A. M. T.2014-05-20T15:24:35Z2014-05-20T15:24:35Z2006-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article237-246application/pdfhttp://dx.doi.org/10.4995/wrs.2006.563World Rabbit Science. Valencia: Universidad Politecnica de Valencia, v. 14, n. 4, p. 237-246, 2006.1257-5011http://hdl.handle.net/11449/3516110.4995/wrs.2006.563WOS:000243139600003WOS000243139600003.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengWorld Rabbit Science0.6610,433info:eu-repo/semantics/openAccess2024-04-30T13:33:33Zoai:repositorio.unesp.br:11449/35161Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:03:29.126919Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
title |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
spellingShingle |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits Bianospino, E. rabbit carcass traits dressing percentage growth muscle pHu retail cuts |
title_short |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
title_full |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
title_fullStr |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
title_full_unstemmed |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
title_sort |
Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits |
author |
Bianospino, E. |
author_facet |
Bianospino, E. Wechsler, F. S. Fernandes, S. Roça, Roberto de Oliveira [UNESP] Moura, A. S. A. M. T. |
author_role |
author |
author2 |
Wechsler, F. S. Fernandes, S. Roça, Roberto de Oliveira [UNESP] Moura, A. S. A. M. T. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Bianospino, E. Wechsler, F. S. Fernandes, S. Roça, Roberto de Oliveira [UNESP] Moura, A. S. A. M. T. |
dc.subject.por.fl_str_mv |
rabbit carcass traits dressing percentage growth muscle pHu retail cuts |
topic |
rabbit carcass traits dressing percentage growth muscle pHu retail cuts |
description |
The objective was to evaluate the effects of genetic group and age on growth, carcass, and meat traits of rabbits. A total of 144 straightbred Botucatu and White German Giant x Botucatu crossbred rabbits were involved. Rabbits were weaned at 35 d and sequentially, slaughtered, four per genetic group x sex combination, at: 42, 49, 56, 63, 70, 77, 84 and 91 d. A 2x2 factorial arrangement was employed in a completely randomized design with repeated measures for growth traits, and a split-plot for carcass and meat traits. Crossbred rabbits were heavier (2032 vs. 1962 g; P < 0.01), consumed more feed (143.5 vs. 131.0 g/d; P < 0.01), and presented higher slaughter weight (2169 vs. 2093 g, P=0.02) and dressing percentage (59.0 vs. 58.2%; P=0.07) than straightbreds throughout the experiment. No difference between genetic groups was detected for feed conversion and empty gastrointestinal weight corrected for slaughter weight (SW). Crossbreds showed higher skin weight (308.2 vs. 299.7 g, P = 0.06) and distal parts of leg weight (75.7 vs. 71.4 g; P < 0.01), both corrected for SW. No genetic group effect was detected on dissectible fat and hind part weights. Chilled commercial carcass (1284 vs. 1229 g: P=0.02), chilled reference carcass (1036 vs. 1000 g, P=0.06), fore part (297.9 vs. 283.3 g; P=0.01) and loin (308.7 vs. 295.5 g; P=0.05) were heavier in crossbreds than in straightbreds, but these differences were attributed to differences in SW. Uncorrected weights of head, kidneys, liver and thoracic viscera were higher in the crossbred group, but only head (116.6 vs. 113.6 g; P=0.06) and thoracic viscera (30.4 vs. 28.6 g; P=0.01) were, in fact, proportionately heavier in crossbreds than in straightbreds. No effect of genetic group was detected on meat to bone ratio, muscle ultimate pH and chemical composition of the Longissimus dorsi muscle. All traits, except for ash and fat contents of the Longissimus muscle, showed age effects (P < 0.01). Crossbreeding may be recommended for the production of whole commercial carcasses, but it is not clearly advantageous for the production of retail cuts. Slaughter should take place between 63 and 70 d of age for both genetic groups. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-10-01 2014-05-20T15:24:35Z 2014-05-20T15:24:35Z |
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/10.4995/wrs.2006.563 World Rabbit Science. Valencia: Universidad Politecnica de Valencia, v. 14, n. 4, p. 237-246, 2006. 1257-5011 http://hdl.handle.net/11449/35161 10.4995/wrs.2006.563 WOS:000243139600003 WOS000243139600003.pdf |
url |
http://dx.doi.org/10.4995/wrs.2006.563 http://hdl.handle.net/11449/35161 |
identifier_str_mv |
World Rabbit Science. Valencia: Universidad Politecnica de Valencia, v. 14, n. 4, p. 237-246, 2006. 1257-5011 10.4995/wrs.2006.563 WOS:000243139600003 WOS000243139600003.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
World Rabbit Science 0.661 0,433 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
237-246 application/pdf |
dc.publisher.none.fl_str_mv |
Universidad Politecnica de Valencia |
publisher.none.fl_str_mv |
Universidad Politecnica de Valencia |
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 |
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1808129279317245952 |