Validation of a handheld near-infrared spectrophotometer for measurement of chemical intramuscular fat in Australian lamb.
Meat Sci
; 214: 109517, 2024 Aug.
Article
en En
| MEDLINE
| ID: mdl-38696994
ABSTRACT
The objective of the study was to independently validate a calibrated commercial handheld near infrared (NIR) spectroscopic device and test its repeatability over time using phenotypically diverse populations of Australian lamb. Validation testing in eight separate data sub-groups (n = 1591 carcasses overall) demonstrated that the NIR device had moderate precision (R2 = 0.4-0.64, RMSEP = 0.70-1.22%) but fluctuated in accuracy between experimental site demonstrated by variable slopes (0.50-0.94) and biases (-0.86-0.02). The repeatability experiment (n = 10 carcasses) showed that time to scan post quartering affected NIR measurement from 0 to 24 h (P < 0.001). On average, NIR IMF% was 0.97% lower (P < 0.001) at 24 h (4.01% ± 0.166), compared to 0 h. There was no difference (P > 0.05) between Time 0 and 1 h or Time 0 and 4 h or between replicate scans within each time point. This study demonstrated the SOMA NIR device could predict lamb chemical IMF% with moderate precision and accuracy, however additional work is required to understand how loin preparation, blooming and surface hydration affect NIR measurement.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Músculo Esquelético
/
Espectroscopía Infrarroja Corta
/
Oveja Doméstica
/
Carne Roja
Límite:
Animals
País/Región como asunto:
Oceania
Idioma:
En
Revista:
Meat Sci
Asunto de la revista:
CIENCIAS DA NUTRICAO
Año:
2024
Tipo del documento:
Article