Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbits

Detalhes bibliográficos
Autor(a) principal: Bianospino, E. [UNESP]
Data de Publicação: 2006
Outros Autores: Wechsler, F. S. [UNESP], Fernandes, S. [UNESP], Roça, R. O. [UNESP], Moura, Ana Silvia Alves Meira Tavares [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/224859
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. © WRSA, UPV, 2003.
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spelling Growth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbitsCarcass traitsDressing percentageGrowthMuscle pHuRabbitRetail 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. © WRSA, UPV, 2003.Dpt. de Produção e Exploração Animal Faculdade de Medicina Veterinária e Zootecnia UNESP, Botucatu-SPDpt. de Gestão e Tecnologia Agroindustrial Faculdade de Ciências Agronômicas UNESP, Botucatu-SPDpt. de Produção e Exploração Animal Faculdade de Medicina Veterinária e Zootecnia UNESP, Botucatu-SPDpt. de Gestão e Tecnologia Agroindustrial Faculdade de Ciências Agronômicas UNESP, Botucatu-SPUniversidade Estadual Paulista (UNESP)Bianospino, E. [UNESP]Wechsler, F. S. [UNESP]Fernandes, S. [UNESP]Roça, R. O. [UNESP]Moura, Ana Silvia Alves Meira Tavares [UNESP]2022-04-28T20:15:09Z2022-04-28T20:15:09Z2006-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article237-246World Rabbit Science, v. 14, n. 4, p. 237-246, 2006.1257-5011http://hdl.handle.net/11449/2248592-s2.0-33846596219Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengWorld Rabbit Scienceinfo:eu-repo/semantics/openAccess2024-09-09T13:01:10Zoai:repositorio.unesp.br:11449/224859Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-09T13:01:10Repositório 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. [UNESP]
Carcass traits
Dressing percentage
Growth
Muscle pHu
Rabbit
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. [UNESP]
author_facet Bianospino, E. [UNESP]
Wechsler, F. S. [UNESP]
Fernandes, S. [UNESP]
Roça, R. O. [UNESP]
Moura, Ana Silvia Alves Meira Tavares [UNESP]
author_role author
author2 Wechsler, F. S. [UNESP]
Fernandes, S. [UNESP]
Roça, R. O. [UNESP]
Moura, Ana Silvia Alves Meira Tavares [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Bianospino, E. [UNESP]
Wechsler, F. S. [UNESP]
Fernandes, S. [UNESP]
Roça, R. O. [UNESP]
Moura, Ana Silvia Alves Meira Tavares [UNESP]
dc.subject.por.fl_str_mv Carcass traits
Dressing percentage
Growth
Muscle pHu
Rabbit
Retail cuts
topic Carcass traits
Dressing percentage
Growth
Muscle pHu
Rabbit
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. © WRSA, UPV, 2003.
publishDate 2006
dc.date.none.fl_str_mv 2006-10-01
2022-04-28T20:15:09Z
2022-04-28T20:15:09Z
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 World Rabbit Science, v. 14, n. 4, p. 237-246, 2006.
1257-5011
http://hdl.handle.net/11449/224859
2-s2.0-33846596219
identifier_str_mv World Rabbit Science, v. 14, n. 4, p. 237-246, 2006.
1257-5011
2-s2.0-33846596219
url http://hdl.handle.net/11449/224859
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv World Rabbit Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 237-246
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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