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Registro completo
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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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| Registros recuperados : 150 | |
| 24. |  | GRASSO, N.; PERAZA, P.; NAVAJAS, E. Performance of the Geneseek® genomic profiler bovine HD? for beef cattle in Hereford. [Abstract]. Congreso de la Asociación Latinoamericana de Producción Animal, 24.; Congreso de la Sociedad Chilena de Producción Animal, 40., Puerto Varas, Chile, 9 al 13 noviembre 2015. ln: Reunión ALPA (24., Puerto Varas, Chile). Resúmenes. Puerto Varas (Chile): ALPA, 2015. p. 211| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Las Brujas. |
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| 27. | | PRAVIA, M.I.; NAVAJAS, E.; AGUILAR, I.; RAVAGNOLO, O. Alternative models to predict residual feed intake in Hereford breed and effects on their breeding values accuracy. [48] Part 6 - Challenges - resource allocation and genetics of feed intake and efficiency. In: Proceedings of the World Congress on Genetics Applied to Livestock Production (WCGALP), 12., Rotterdam, the Netherlands, 3-8 July 2022. doi: https://doi.org/10.3920/978-90-8686-940-4_48 240-243. Article history: Published online: February 9, 2023 -- Corresponding author: María Isabel Pravia, email: mpravia@inia.org.uy| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA Las Brujas. |
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| 29. | | GOLDBERG, V.; MACEDO, F.; PIERUCCIONI, F.; NAVAJAS, E.; CIAPPESONI, G. Diagnóstico para la presencia de cuernos en ovinos Merino a través del uso de herramientas genómicas. GGM 14 - COMUNICACIONES LIBRES - GGM. GENÓMICA Y GENÉTICA MOLECULAR In: JOURNAL OF BASIC & APPLIED GENETICS, 2016, Vol.27, Iss. 1 (Supp.). XVI LATIN AMERICAN CONGRESS OF GENETICS, IV CONGRESS OF THE URUGUAYAN SOCIETY OF GENETICS, XLIX ANNUAL MEETING OF THE GENETICS SOCIETY OF CHILE, XLV ARGENTINE CONGRESS OF GENETICS, 9-12 October 2016. PROCEEDINGS. Montevideo (Uruguay): SAG, 2016. p. 261| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA Las Brujas. |
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| 31. | | NAVAJAS, E.; CIAPPESONI, G.; GIMENO, D.; DE BARBIERI, I. Asociación entre características clave para la mejora genética de la raza Corriedale en Uruguay. Anuario AACC, 2022, p.69-75. Este Proyecto ha recibido financiamiento del programa Horizon2020 de investigación e innovación de la Unión Europea (acuerdo Número 772787, proyecto SMARTER), de INIA (proyecto CL38-RUMIAR), y de las organizaciones financiadoras SusAn,...| Biblioteca(s): INIA Las Brujas. |
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| 34. | | FRANCO, J.; FEED, O.; AGUILAR, I.; GIMENO, D.; NAVAJAS, E. ¿Afectamos la calidad del producto al cruzar? Calidad de la carne: pH y terneza. ln: INIA Tacuarembó. Seminario de actualización técnica, 23 de agosto, 2002. Cruzamientos en bovinos para carnes: Resultados FPTA 083. Tacuarembó, (Uruguay): INIA; Facultad de Agronomía, 2002. p. 63-67 (INIA Serie Actividades de Difusión ; 295) INIA Tacuarembó; Universidad de la República (Uruguay). Facultad de Agronomía; Universidad de la República (Uruguay). Facultad de Química; Frigorífico Tacuarembó; Universidad de la República (Uruguay). Facultad de Veterinaria; Caja...| Biblioteca(s): INIA Tacuarembó. |
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| 36. | | CARRACELAS, B.; NAVAJAS, E.; VERA, B.; CIAPPESONI, G. Estudio de asociación de genoma completo para resistencia genética a nematodos gastrointestinales en ovinos Corriedale. [abstract]. In: AUPA, Proceedings del VII Congreso Uruguayo de Producción Animal. Sección Una Sola Salud (Single Health Section), 14 y 15 diciembre 2021. Archivos Latinoamericanos de Producción Animal, 29(Supl.1), p.96. (Archivos Latinoamericanos de Producción Animal, Vol.29, Supl.1) Corresponding author: B. Carracelas, Instituto Nacional de Investigación Agropecuaria (INIA), Ruta 48 Km 10, Las Brujas, Uruguay, mailto: bcarracelas@inia.org.uy| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Las Brujas. |
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| 37. | | PIERUCCIONI, F.; MACEDO, F.; CORREA, O.; CIAPPESONI, G.; NAVAJAS, E. Estudio preliminar de asociación entre marcadores SNP y conteo de huevos por gramo en los ovinos criollos del Parque Nacional de San Miguel en Uruguay. [Resumen]. Congreso de la Asociación Latinoamericana de Producción Animal, 24.; Congreso de la Sociedad Chilena de Producción Animal, 40., Puerto Varas, Chile, 9 al 13 noviembre 2015. ln: Reunión ALPA (24., Puerto Varas, Chile). Resúmenes. Puerto Varas (Chile): ALPA, 2015. p. 758| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 150 | |
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