Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum

CAPRA, GUSTAVO - MARTINEZ, R. - FRADILETTI, FLORENCIA - COZZANO, SONIA - REPISO, LUIS - MÁRQUEZ, ROSA - IBÁÑEZ, F.

Resumen:

The aim of this study was to evaluate production performance, carcass characteristics and nutritive value of meat of rabbits reared under the 2 prevailing feeding strategies in Uruguay. One week after weaning, 96 purebred V line rabbits were randomly distributed between 2 treatments: (T1) commercial pelleted food ad libitum and (T2) commercial pelleted food ad libitum plus fresh alfalfa ad libitum. Each treatment included 12 cages containing 4 individuals each (2 males and 2 females). Growth performance characteristics (live weight evolution, commercial food consumption and food/gain ratio) were evaluated. The consumption of alfalfa was not measured. Rabbits were slaughtered at a live weight of 2500 g and carcass characteristics were evaluated. Samples of meat and dissectible fat were analysed to determine intramuscular fat content at muscle L. dorsi, dissectible fat and intramuscular fat composition, minerals (Zn, Fe, Mg and Na), vitamin E and purines. Sensory evaluations were conducted to assess the effect of treatments on the consumer’s perception of differences and the existence of attributes determining preferences. Differences between treatments were significant for total commercial food intake (23356 vs. 20930 g/cage; P<0.001) and feed conversion ratio (3.82 vs. 3.41; P<0.01) for T1 and T2 respectively. No significant differences were found in average daily gain, age at slaughter and carcass characteristics. There were no significant differences in the intramuscular fat content. The fatty acid composition of dissectible and intramuscular fat was affected by the inclusion of alfalfa in the diet increasing the linolenic acid content (1.82 vs. 3.28% and 2.29 vs. 5.15% for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001), and improving the n-6/n-3 relationship (8.60 vs. 5.82 and 11.58 vs. 5.64 for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001). There were no significant differences in vitamin E, Fe or Zn content between treatments, but differences were significant in Mg (22.5 vs. 24.4 mg/100 g for T1 and T2; P<0.05) and Na (44.1 vs. 48.2 mg/100 g; P<0.05). In the sensory evaluation, panellists significantly perceived differences between treatments with 95% confidence.


Detalles Bibliográficos
2013
ANÁLISIS DE ALIMENTOS
CARNE
COMPOSICIÓN
GRASAS
VITAMINAS
Inglés
Laboratorio Tecnológico del Uruguay
Catálogo digital del LATU
https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32412
Acceso abierto
CC BY
_version_ 1807353831775797248
author CAPRA, GUSTAVO
author2 MARTINEZ, R.
FRADILETTI, FLORENCIA
COZZANO, SONIA
REPISO, LUIS
MÁRQUEZ, ROSA
IBÁÑEZ, F.
author2_role author
author
author
author
author
author
author_facet CAPRA, GUSTAVO
MARTINEZ, R.
FRADILETTI, FLORENCIA
COZZANO, SONIA
REPISO, LUIS
MÁRQUEZ, ROSA
IBÁÑEZ, F.
author_role author
collection Catálogo digital del LATU
dc.coverage.none.fl_str_mv En: World Rabbit Sci., 21, pp.23-32. DOI: 10.4995/wrs.2013.1197
dc.creator.none.fl_str_mv CAPRA, GUSTAVO
MARTINEZ, R.
FRADILETTI, FLORENCIA
COZZANO, SONIA
REPISO, LUIS
MÁRQUEZ, ROSA
IBÁÑEZ, F.
dc.date.none.fl_str_mv 2013-01-01
dc.description.abstract.none.fl_txt_mv The aim of this study was to evaluate production performance, carcass characteristics and nutritive value of meat of rabbits reared under the 2 prevailing feeding strategies in Uruguay. One week after weaning, 96 purebred V line rabbits were randomly distributed between 2 treatments: (T1) commercial pelleted food ad libitum and (T2) commercial pelleted food ad libitum plus fresh alfalfa ad libitum. Each treatment included 12 cages containing 4 individuals each (2 males and 2 females). Growth performance characteristics (live weight evolution, commercial food consumption and food/gain ratio) were evaluated. The consumption of alfalfa was not measured. Rabbits were slaughtered at a live weight of 2500 g and carcass characteristics were evaluated. Samples of meat and dissectible fat were analysed to determine intramuscular fat content at muscle L. dorsi, dissectible fat and intramuscular fat composition, minerals (Zn, Fe, Mg and Na), vitamin E and purines. Sensory evaluations were conducted to assess the effect of treatments on the consumer’s perception of differences and the existence of attributes determining preferences. Differences between treatments were significant for total commercial food intake (23356 vs. 20930 g/cage; P<0.001) and feed conversion ratio (3.82 vs. 3.41; P<0.01) for T1 and T2 respectively. No significant differences were found in average daily gain, age at slaughter and carcass characteristics. There were no significant differences in the intramuscular fat content. The fatty acid composition of dissectible and intramuscular fat was affected by the inclusion of alfalfa in the diet increasing the linolenic acid content (1.82 vs. 3.28% and 2.29 vs. 5.15% for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001), and improving the n-6/n-3 relationship (8.60 vs. 5.82 and 11.58 vs. 5.64 for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001). There were no significant differences in vitamin E, Fe or Zn content between treatments, but differences were significant in Mg (22.5 vs. 24.4 mg/100 g for T1 and T2; P<0.05) and Na (44.1 vs. 48.2 mg/100 g; P<0.05). In the sensory evaluation, panellists significantly perceived differences between treatments with 95% confidence.
dc.format.none.fl_str_mv Pdf
dc.identifier.none.fl_str_mv https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32412
32412
urn:ISBN:69383
dc.language.iso.none.fl_str_mv eng
dc.rights.license.none.fl_str_mv CC BY
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
CC BY
dc.source.none.fl_str_mv reponame:Catálogo digital del LATU
instname:Laboratorio Tecnológico del Uruguay
instacron:Laboratorio Tecnológico del Uruguay
dc.subject.none.fl_str_mv ANÁLISIS DE ALIMENTOS
CARNE
COMPOSICIÓN
GRASAS
VITAMINAS
dc.title.none.fl_str_mv Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
dc.type.none.fl_str_mv info:eu-repo/semantics/article
Publicado
dc.type.version.none.fl_str_mv info:eu-repo/semantics/publishedVersion
description The aim of this study was to evaluate production performance, carcass characteristics and nutritive value of meat of rabbits reared under the 2 prevailing feeding strategies in Uruguay. One week after weaning, 96 purebred V line rabbits were randomly distributed between 2 treatments: (T1) commercial pelleted food ad libitum and (T2) commercial pelleted food ad libitum plus fresh alfalfa ad libitum. Each treatment included 12 cages containing 4 individuals each (2 males and 2 females). Growth performance characteristics (live weight evolution, commercial food consumption and food/gain ratio) were evaluated. The consumption of alfalfa was not measured. Rabbits were slaughtered at a live weight of 2500 g and carcass characteristics were evaluated. Samples of meat and dissectible fat were analysed to determine intramuscular fat content at muscle L. dorsi, dissectible fat and intramuscular fat composition, minerals (Zn, Fe, Mg and Na), vitamin E and purines. Sensory evaluations were conducted to assess the effect of treatments on the consumer’s perception of differences and the existence of attributes determining preferences. Differences between treatments were significant for total commercial food intake (23356 vs. 20930 g/cage; P<0.001) and feed conversion ratio (3.82 vs. 3.41; P<0.01) for T1 and T2 respectively. No significant differences were found in average daily gain, age at slaughter and carcass characteristics. There were no significant differences in the intramuscular fat content. The fatty acid composition of dissectible and intramuscular fat was affected by the inclusion of alfalfa in the diet increasing the linolenic acid content (1.82 vs. 3.28% and 2.29 vs. 5.15% for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001), and improving the n-6/n-3 relationship (8.60 vs. 5.82 and 11.58 vs. 5.64 for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001). There were no significant differences in vitamin E, Fe or Zn content between treatments, but differences were significant in Mg (22.5 vs. 24.4 mg/100 g for T1 and T2; P<0.05) and Na (44.1 vs. 48.2 mg/100 g; P<0.05). In the sensory evaluation, panellists significantly perceived differences between treatments with 95% confidence.
eu_rights_str_mv openAccess
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id LATU_3083f9613e4c48d596f86ce20b422d38
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rights_invalid_str_mv CC BY
CC BY
spelling Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitumCAPRA, GUSTAVOMARTINEZ, R.FRADILETTI, FLORENCIACOZZANO, SONIA REPISO, LUISMÁRQUEZ, ROSAIBÁÑEZ, F.ANÁLISIS DE ALIMENTOSCARNECOMPOSICIÓNGRASASVITAMINASThe aim of this study was to evaluate production performance, carcass characteristics and nutritive value of meat of rabbits reared under the 2 prevailing feeding strategies in Uruguay. One week after weaning, 96 purebred V line rabbits were randomly distributed between 2 treatments: (T1) commercial pelleted food ad libitum and (T2) commercial pelleted food ad libitum plus fresh alfalfa ad libitum. Each treatment included 12 cages containing 4 individuals each (2 males and 2 females). Growth performance characteristics (live weight evolution, commercial food consumption and food/gain ratio) were evaluated. The consumption of alfalfa was not measured. Rabbits were slaughtered at a live weight of 2500 g and carcass characteristics were evaluated. Samples of meat and dissectible fat were analysed to determine intramuscular fat content at muscle L. dorsi, dissectible fat and intramuscular fat composition, minerals (Zn, Fe, Mg and Na), vitamin E and purines. Sensory evaluations were conducted to assess the effect of treatments on the consumer’s perception of differences and the existence of attributes determining preferences. Differences between treatments were significant for total commercial food intake (23356 vs. 20930 g/cage; P<0.001) and feed conversion ratio (3.82 vs. 3.41; P<0.01) for T1 and T2 respectively. No significant differences were found in average daily gain, age at slaughter and carcass characteristics. There were no significant differences in the intramuscular fat content. The fatty acid composition of dissectible and intramuscular fat was affected by the inclusion of alfalfa in the diet increasing the linolenic acid content (1.82 vs. 3.28% and 2.29 vs. 5.15% for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001), and improving the n-6/n-3 relationship (8.60 vs. 5.82 and 11.58 vs. 5.64 for T1 and T2 at intramuscular and dissectible fat, respectively; P<0.001). There were no significant differences in vitamin E, Fe or Zn content between treatments, but differences were significant in Mg (22.5 vs. 24.4 mg/100 g for T1 and T2; P<0.05) and Na (44.1 vs. 48.2 mg/100 g; P<0.05). In the sensory evaluation, panellists significantly perceived differences between treatments with 95% confidence.2013-01-01info:eu-repo/semantics/articlePublicadoinfo:eu-repo/semantics/publishedVersionPdfhttps://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=3241232412urn:ISBN:69383engEn: World Rabbit Sci., 21, pp.23-32. DOI: 10.4995/wrs.2013.1197 info:eu-repo/semantics/openAccessCC BYCC BYreponame:Catálogo digital del LATUinstname:Laboratorio Tecnológico del Uruguayinstacron:Laboratorio Tecnológico del Uruguay2021-11-17T18:25:31Zoai:PMBOAI:32412Gobiernohttps://latu.org.uy/https://catalogo.latu.org.uy/ws/PMBOAIlfiori@latu.org.uyUruguayopendoar:2024-08-01T14:48:58.730478Catálogo digital del LATU - Laboratorio Tecnológico del Uruguayfalse
spellingShingle Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
CAPRA, GUSTAVO
ANÁLISIS DE ALIMENTOS
CARNE
COMPOSICIÓN
GRASAS
VITAMINAS
status_str publishedVersion
title Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
title_full Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
title_fullStr Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
title_full_unstemmed Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
title_short Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
title_sort Meat quality of rabbits reared with two different feeding strategies : with or without fresh alfalfa ad libitum
topic ANÁLISIS DE ALIMENTOS
CARNE
COMPOSICIÓN
GRASAS
VITAMINAS
url https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32412