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

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dc.contributor.authorBianospino, E.
dc.contributor.authorWechsler, F. S.
dc.contributor.authorFernandes, S.
dc.contributor.authorRoça, Roberto de Oliveira [UNESP]
dc.contributor.authorMoura, A. S. A. M. T.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:24:35Z
dc.date.available2014-05-20T15:24:35Z
dc.date.issued2006-10-01
dc.description.abstractThe 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.en
dc.description.affiliationUniv Estadual Paulista Julio Mesquita Filho, Fac Med Vet & Zootecnia, Dpt Prod & Explorac Anim, Botucatu, SP, Brazil
dc.description.affiliationUniv Estadual Paulista Julio Mesquita Filho, Fac Ciências Agron, Dpt Gestao & Tecnol Agroind, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio Mesquita Filho, Fac Med Vet & Zootecnia, Dpt Prod & Explorac Anim, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio Mesquita Filho, Fac Ciências Agron, Dpt Gestao & Tecnol Agroind, Botucatu, SP, Brazil
dc.format.extent237-246
dc.identifierhttp://dx.doi.org/10.4995/wrs.2006.563
dc.identifier.citationWorld Rabbit Science. Valencia: Universidad Politecnica de Valencia, v. 14, n. 4, p. 237-246, 2006.
dc.identifier.doi10.4995/wrs.2006.563
dc.identifier.fileWOS000243139600003.pdf
dc.identifier.issn1257-5011
dc.identifier.urihttp://hdl.handle.net/11449/35161
dc.identifier.wosWOS:000243139600003
dc.language.isoeng
dc.publisherUniversidad Politecnica de Valencia
dc.relation.ispartofWorld Rabbit Science
dc.relation.ispartofjcr0.661
dc.relation.ispartofsjr0,433
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectrabbitpt
dc.subjectcarcass traitspt
dc.subjectdressing percentagept
dc.subjectgrowthpt
dc.subjectmuscle pHupt
dc.subjectretail cutspt
dc.titleGrowth, carcass and meat quality traits of straightbred and crossbred Botucatu rabbitsen
dc.typeArtigo
dcterms.licensehttp://ojs.upv.es/index.php/wrs/about/submissions#copyrightNotice
dcterms.rightsHolderUniversidad Politecnica de Valencia
unesp.author.orcid0000-0002-1776-2066[4]
unesp.author.orcid0000-0002-2105-7319[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt

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