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Phénotypage fin de la composition corporelle : calibration et comparaison directe de huit méthodes chez la chèvre laitière

Abstract : Eight methods were compared to estimate dairy goat body composition, by calibrating against chemical composition measured post-mortem. The methods tested on 20 Alpine goats were body condition score (BCS), 3D imaging assessment of BCS or whole body scan, ultrasound, computer tomography (CT), adipose cell diameter, deuterium oxide dilution space (D2OS) and bioelectrical impedance spectroscopy. Regressions were tested between predictive variates and empty body composition. The best equations for estimation of lipid mass included body weight combined with i) perirenal adipose tissue mass and cell diameter (R² = 0.95), ii) volume of fatty tissues measured by CT (R² = 0.92), or iii) D2OS (R² = 0.91). The best equations for estimation of protein mass combined body weight with D2OS (R² = 0.97) or sternal BCS (R² = 0.95). Whole body 3D imaging method and ultrasound measurements were not satisfactory estimators of body composition (R² ≤ 0.40).
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https://hal.inrae.fr/hal-02934616
Contributor : Jose Pires <>
Submitted on : Wednesday, September 9, 2020 - 2:59:18 PM
Last modification on : Monday, July 19, 2021 - 4:20:21 PM
Long-term archiving on: : Thursday, December 3, 2020 - 1:09:02 AM

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  • HAL Id : hal-02934616, version 1

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S Lerch, Anne de la Torre, Christophe Huau, M Monziols, Caroline Xavier, et al.. Phénotypage fin de la composition corporelle : calibration et comparaison directe de huit méthodes chez la chèvre laitière. 25. Rencontres autour des Recherches sur les Ruminants (3R), Dec 2020, En ligne, France. pp.33-37. ⟨hal-02934616⟩

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