Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb

S F Walkom; P Alexandri; S Connaughton; G Gardner; A Williams; D J Brown

Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb

S F Walkom
, P Alexandri
, S Connaughton
, G Gardner
, A Williams
, D J Brown

Animal Genetics and Breeding Unit

Research output: Contribution to journal › Conference article › peer-review

Abstract

Dual-energy X-ray absorptiometry (DEXA) is rapidly gaining acceptance as a reference method for analysing body composition. Since initial developments in 2017, as part of the Advanced Livestock Measurement Technologies project, there has been an influx of DEXA measurements and some additional computed tomography (CT) measurements on genetically informative animals via the MLA funded Resource Flock and companion industry satellite flocks. Although more data is required, the results suggest that the DEXA lean meat yield is likely to be the same genetic trait as the CT measured lean meat yield. These results are promising and plans regarding the utilisation of DEXA data within Sheep Genetics national evaluation should begin. However, improving hook tracking technologies and data transfer pathways concurrently is also required.

Original language	English
Pages (from-to)	306-309
Journal	Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Volume	25
Publication status	Published - 26 Jul 2023
Event	AAABG 2023: 25th Conference of the Association for the Advancement of Animal Breeding and Genetics - The University Club of Western Australia, Perth, Australia Duration: 26 Jul 2023 → 28 Jul 2023

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title = "Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb",

abstract = "Dual-energy X-ray absorptiometry (DEXA) is rapidly gaining acceptance as a reference method for analysing body composition. Since initial developments in 2017, as part of the Advanced Livestock Measurement Technologies project, there has been an influx of DEXA measurements and some additional computed tomography (CT) measurements on genetically informative animals via the MLA funded Resource Flock and companion industry satellite flocks. Although more data is required, the results suggest that the DEXA lean meat yield is likely to be the same genetic trait as the CT measured lean meat yield. These results are promising and plans regarding the utilisation of DEXA data within Sheep Genetics national evaluation should begin. However, improving hook tracking technologies and data transfer pathways concurrently is also required.",

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year = "2023",

month = jul,

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language = "English",

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pages = "306--309",

journal = "Proceedings of the Association for the Advancement of Animal Breeding and Genetics",

issn = "1328-3227",

publisher = "Association for the Advancement of Animal Breeding and Genetics (AAABG)",

note = "AAABG 2023: 25th Conference of the Association for the Advancement of Animal Breeding and Genetics ; Conference date: 26-07-2023 Through 28-07-2023",

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TY - JOUR

T1 - Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb

AU - Walkom, S F

AU - Alexandri, P

AU - Connaughton, S

AU - Gardner, G

AU - Williams, A

AU - Brown, D J

PY - 2023/7/26

Y1 - 2023/7/26

N2 - Dual-energy X-ray absorptiometry (DEXA) is rapidly gaining acceptance as a reference method for analysing body composition. Since initial developments in 2017, as part of the Advanced Livestock Measurement Technologies project, there has been an influx of DEXA measurements and some additional computed tomography (CT) measurements on genetically informative animals via the MLA funded Resource Flock and companion industry satellite flocks. Although more data is required, the results suggest that the DEXA lean meat yield is likely to be the same genetic trait as the CT measured lean meat yield. These results are promising and plans regarding the utilisation of DEXA data within Sheep Genetics national evaluation should begin. However, improving hook tracking technologies and data transfer pathways concurrently is also required.

AB - Dual-energy X-ray absorptiometry (DEXA) is rapidly gaining acceptance as a reference method for analysing body composition. Since initial developments in 2017, as part of the Advanced Livestock Measurement Technologies project, there has been an influx of DEXA measurements and some additional computed tomography (CT) measurements on genetically informative animals via the MLA funded Resource Flock and companion industry satellite flocks. Although more data is required, the results suggest that the DEXA lean meat yield is likely to be the same genetic trait as the CT measured lean meat yield. These results are promising and plans regarding the utilisation of DEXA data within Sheep Genetics national evaluation should begin. However, improving hook tracking technologies and data transfer pathways concurrently is also required.

UR - http://www.aaabg.org/aaabghome/proceedings25.php

M3 - Conference article

SN - 1328-3227

VL - 25

SP - 306

EP - 309

JO - Proceedings of the Association for the Advancement of Animal Breeding and Genetics

JF - Proceedings of the Association for the Advancement of Animal Breeding and Genetics

T2 - AAABG 2023: 25th Conference of the Association for the Advancement of Animal Breeding and Genetics

Y2 - 26 July 2023 through 28 July 2023

ER -

Merits of using DEXA to measure lean meat yield for the genetic evaluation of Australian lamb

Abstract

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