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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
01/02/2022 |
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Actualizado : |
01/02/2022 |
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Autor : |
LAMBE, N.R.; NAVAJAS, E.; MCLEAN, K.A.; SIMM, G.; BÜNGER, L. |
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Afiliación : |
N.R. LAMBE, SAC, Sustainable Livestock Systems Group, Edinburgh, EH9 3JG Scotland, West Mains Road, United Kingdom; ELLY ANA NAVAJAS VALENTINI, SAC, Sustainable Livestock Systems Group, Edinburgh, EH9 3JG Scotland, West Mains Road, United Kingdom; K.A. MCLEAN, SAC, Sustainable Livestock Systems Group, Edinburgh, EH9 3JG Scotland, West Mains Road, United Kingdom; G. SIMM, SAC, Sustainable Livestock Systems Group, Edinburgh, EH9 3JG Scotland, West Mains Road, United Kingdom; L. BÜNGER, SAC, Sustainable Livestock Systems Group, Edinburgh, EH9 3JG Scotland, West Mains Road, United Kingdom. |
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Título : |
Changes in carcass traits during growth in lambs of two contrasting breeds, measured using computer tomography. |
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Fecha de publicación : |
2007 |
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Fuente / Imprenta : |
Livestock Science 2007, Volume 107, Issue 1, Pages 37-52. doi: http://dx.doi.org/10.1016/j.livsci.2006.09.001 |
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ISSN : |
1871-1413 |
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DOI : |
10.1016/j.livsci.2006.09.001 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 7 September 2005; Received in revised form 30 April 2006; Accepted 5 September 2006. |
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Contenido : |
ABSTRACT.- Male and female Texel (Tex, n = 130) and Scottish Blackface (SBF, n = 103) lambs were grazed together on low-ground pastures from birth to slaughter. Lambs were scanned using computer tomography (CT) on a maximum of four occasions during the growth period: at approximately 8, 11 and 16 weeks of age and pre-slaughter, which occurred in five batches over a 12-week period. The aim was to investigate the use of in vivo CT scanning over the growth period (from ca. 15 to 45 kg live weight, corresponding to an age of ca. 40 to 200d) to study changes in carcass traits and their relationships during growth, in two contrasting breeds. Relationships among CT traits and between CT traits and live weight were investigated within breed, to assess changes with growth. Increased live weight was associated with increases in total fat proportion, fat:muscle ratio, muscle:bone ratio, loin muscle area and proportion of fat in the chest region, in both breeds. Two-dimensional muscle shape (depth:width ratio) in the hind leg (HLS) and the loin (LMS), and proportion of muscle in the loin also increased with live weight in Tex lambs. Live weight was negatively associated with proportion of fat in the leg in both breeds, and with HLS, LMS and CT fat density in SBF lambs. Similar trends between CT traits and total fat proportion suggest that associations hold for increasing maturity, as well as size. The results suggest that slaughtering SBF lambs at lighter weights will avoid them becoming over-fat, maintain overall muscle proportion at a higher level and lead to rounder muscle shapes in the hind leg and loin. However, Tex lambs can be slaughtered at heavier weights without becoming over-fat, and this will result in a higher proportion of muscle being deposited in the economically important loin area, and the muscles in the loin and hind leg being rounder in cross-section. CT scanning lambs during growth allows accurate composition and muscle shape measurements on large numbers of lambs at different stages of development and can help understand the developmental patterns of different economically important sheep breeds. This knowledge can aid in management decisions to improve carcass quality at slaughter. Further work is now needed to examine the genetic background to the relationships between traits presented in this study, and their changes with growth, to allow the incorporation of such CT traits into selection programmes for different sheep breeds.
© 2006 Elsevier B.V. All rights reserved. MenosABSTRACT.- Male and female Texel (Tex, n = 130) and Scottish Blackface (SBF, n = 103) lambs were grazed together on low-ground pastures from birth to slaughter. Lambs were scanned using computer tomography (CT) on a maximum of four occasions during the growth period: at approximately 8, 11 and 16 weeks of age and pre-slaughter, which occurred in five batches over a 12-week period. The aim was to investigate the use of in vivo CT scanning over the growth period (from ca. 15 to 45 kg live weight, corresponding to an age of ca. 40 to 200d) to study changes in carcass traits and their relationships during growth, in two contrasting breeds. Relationships among CT traits and between CT traits and live weight were investigated within breed, to assess changes with growth. Increased live weight was associated with increases in total fat proportion, fat:muscle ratio, muscle:bone ratio, loin muscle area and proportion of fat in the chest region, in both breeds. Two-dimensional muscle shape (depth:width ratio) in the hind leg (HLS) and the loin (LMS), and proportion of muscle in the loin also increased with live weight in Tex lambs. Live weight was negatively associated with proportion of fat in the leg in both breeds, and with HLS, LMS and CT fat density in SBF lambs. Similar trends between CT traits and total fat proportion suggest that associations hold for increasing maturity, as well as size. The results suggest that slaughtering SBF lambs at lighter weights will avoid them becomin... Presentar Todo |
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Palabras claves : |
Computer tomography; Growth; Lambs; Sheep. |
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Asunto categoría : |
L10 Genética y mejoramiento animal |
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Marc : |
LEADER 03408naa a2200253 a 4500
001 1062716
005 2022-02-01
008 2007 bl uuuu u00u1 u #d
022 $a1871-1413
024 7 $a10.1016/j.livsci.2006.09.001$2DOI
100 1 $aLAMBE, N.R.
245 $aChanges in carcass traits during growth in lambs of two contrasting breeds, measured using computer tomography.$h[electronic resource]
260 $c2007
500 $aArticle history: Received 7 September 2005; Received in revised form 30 April 2006; Accepted 5 September 2006.
520 $aABSTRACT.- Male and female Texel (Tex, n = 130) and Scottish Blackface (SBF, n = 103) lambs were grazed together on low-ground pastures from birth to slaughter. Lambs were scanned using computer tomography (CT) on a maximum of four occasions during the growth period: at approximately 8, 11 and 16 weeks of age and pre-slaughter, which occurred in five batches over a 12-week period. The aim was to investigate the use of in vivo CT scanning over the growth period (from ca. 15 to 45 kg live weight, corresponding to an age of ca. 40 to 200d) to study changes in carcass traits and their relationships during growth, in two contrasting breeds. Relationships among CT traits and between CT traits and live weight were investigated within breed, to assess changes with growth. Increased live weight was associated with increases in total fat proportion, fat:muscle ratio, muscle:bone ratio, loin muscle area and proportion of fat in the chest region, in both breeds. Two-dimensional muscle shape (depth:width ratio) in the hind leg (HLS) and the loin (LMS), and proportion of muscle in the loin also increased with live weight in Tex lambs. Live weight was negatively associated with proportion of fat in the leg in both breeds, and with HLS, LMS and CT fat density in SBF lambs. Similar trends between CT traits and total fat proportion suggest that associations hold for increasing maturity, as well as size. The results suggest that slaughtering SBF lambs at lighter weights will avoid them becoming over-fat, maintain overall muscle proportion at a higher level and lead to rounder muscle shapes in the hind leg and loin. However, Tex lambs can be slaughtered at heavier weights without becoming over-fat, and this will result in a higher proportion of muscle being deposited in the economically important loin area, and the muscles in the loin and hind leg being rounder in cross-section. CT scanning lambs during growth allows accurate composition and muscle shape measurements on large numbers of lambs at different stages of development and can help understand the developmental patterns of different economically important sheep breeds. This knowledge can aid in management decisions to improve carcass quality at slaughter. Further work is now needed to examine the genetic background to the relationships between traits presented in this study, and their changes with growth, to allow the incorporation of such CT traits into selection programmes for different sheep breeds. © 2006 Elsevier B.V. All rights reserved.
653 $aComputer tomography
653 $aGrowth
653 $aLambs
653 $aSheep
700 1 $aNAVAJAS, E.
700 1 $aMCLEAN, K.A.
700 1 $aSIMM, G.
700 1 $aBÜNGER, L.
773 $tLivestock Science 2007, Volume 107, Issue 1, Pages 37-52. doi: http://dx.doi.org/10.1016/j.livsci.2006.09.001
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
03/02/2018 |
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Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
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Autor : |
CAMPO, M. M.; RESCONI, V. C.; OLLETA, J. L.; PARDOS, J. J.; LARA, P.; SAÑUDO, C. |
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Afiliación : |
M. M. CAMPO, Universidad de Zaragoza/ Facultad de Veterinaria (FVUZ); V. C. RESCONI, Universidad de Zaragoza/ Facultad de Veterinaria (FVUZ); J. L. OLLETA, Universidad de Zaragoza/ Facultad de Veterinaria (FVUZ); J. J. PARDOS, Universidad de Zaragoza/ Facultad de Veterinaria (FVUZ); P. LARA, Universidad de Zaragoza/ Facultad de Veterinaria (FVUZ); CARLOS SAÑUDO, Universidad de Zaragoza/ Facultad de Veterinaria (FVUZ). |
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Título : |
Evaluación sensorial de carne de novillos finalizados en diferentes sistemas de alimentación |
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Fecha de publicación : |
2007 |
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Fuente / Imprenta : |
In: MONTOSSI, F.; SAÑUDO, C. (Eds.). Cooperación Hispano-Uruguaya. Diferenciación y valorización de la carne ovina y bovina del Uruguay en Europa: Influencia de Sistemas de Producción sobre Bienestar Animal, Atributos Sensoriales, Aceptabilidad y Percepción de Consumidores y Salud Humana Montevideo (Uruguay): INIA, 2007. |
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Páginas : |
p. 67-70 |
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Serie : |
(INIA Serie Técnica ; 168) |
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ISBN : |
978-9974-38-239-8 |
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ISSN : |
1688-9266 |
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Idioma : |
Español |
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Contenido : |
Se han analizado las características organolépticas de la carne de novillos castrados divididos en 4 lotes de acuerdo a su alimentación: exclusivamente pastoril, pastoril con dos niveles de suplementación con concentrado y encierre a corral (concentrado ad libitum y heno de alfalfa). Para ello, 20 animales por lote han sido valorados
por un panel de expertos en análisis sensorial. Se han encontrado diferencias entre tratamientos en la intensidad de olor a vacuno y de olores extraños, terneza, intensidad de flavor a vacuno y ácido y en la apreciación global. La mejor calidad sensorial del producto se logró con una dieta en base a pasto complementado con concentrado. |
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Thesagro : |
CARNE; GANADO BOVINO; PRODUCCION ANIMAL. |
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Asunto categoría : |
--
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7800/1/st-168-2007-p.67-70.pdf
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Marc : |
LEADER 01687naa a2200265 a 4500
001 1008036
005 2018-02-03
008 2007 bl uuuu u00u1 u #d
020 $a978-9974-38-239-8
022 $a1688-9266
100 1 $aCAMPO, M. M.
245 $aEvaluación sensorial de carne de novillos finalizados en diferentes sistemas de alimentación
260 $c2007
300 $ap. 67-70
490 $a(INIA Serie Técnica ; 168)
520 $aSe han analizado las características organolépticas de la carne de novillos castrados divididos en 4 lotes de acuerdo a su alimentación: exclusivamente pastoril, pastoril con dos niveles de suplementación con concentrado y encierre a corral (concentrado ad libitum y heno de alfalfa). Para ello, 20 animales por lote han sido valorados por un panel de expertos en análisis sensorial. Se han encontrado diferencias entre tratamientos en la intensidad de olor a vacuno y de olores extraños, terneza, intensidad de flavor a vacuno y ácido y en la apreciación global. La mejor calidad sensorial del producto se logró con una dieta en base a pasto complementado con concentrado.
650 $aCARNE
650 $aGANADO BOVINO
650 $aPRODUCCION ANIMAL
700 1 $aRESCONI, V. C.
700 1 $aOLLETA, J. L.
700 1 $aPARDOS, J. J.
700 1 $aLARA, P.
700 1 $aSAÑUDO, C.
773 $tIn: MONTOSSI, F.; SAÑUDO, C. (Eds.). Cooperación Hispano-Uruguaya. Diferenciación y valorización de la carne ovina y bovina del Uruguay en Europa: Influencia de Sistemas de Producción sobre Bienestar Animal, Atributos Sensoriales, Aceptabilidad y Percepción de Consumidores y Salud Humana Montevideo (Uruguay): INIA, 2007.
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