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Evaluation of an image analysis approach to predicting primal cuts and lean in light lamb carcasses
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Orientador(es)
Resumo(s)
ABSTRACT - Carcass dissection is a more accurate method for determining the composition of a carcass;
however, it is expensive and time-consuming. Techniques like VIA are of great interest once they are
objective and able to determine carcass contents accurately. This study aims to evaluate the accuracy
of a flexible VIA system to determine the weight and yield of the commercial value of carcass cuts
of light lamb. Photos from 55 lamb carcasses are taken and a total of 21 VIA measurements are
assessed. The half-carcasses are divided into six primal cuts, grouped according to their commercial
value: high-value (HVC), medium-value (MVC), low-value (LVC) and all of the cuts (AllC). K-folds
cross-validation stepwise regression analyses are used to estimate the weights of the cuts in the
groups and their lean meat yields. The models used to estimate the weight of AllC, HVC, MVC and
LVC show similar results and a k-fold coefficient of determination (k-fold-R2) of 0.99 is achieved
for the HVC and AllC predictions. The precision of the weight and yield of the three prediction
models varies from low to moderate, with k-fold-R2 results between 0.186 and 0.530, p < 0.001. The
prediction models used to estimate the total lean meat weight are similar and low, with k-fold-R2
results between 0.080 and 0.461, p < 0.001. The results confirm the ability of the VIA system to
estimate the weights of parts and their yields. However, more research is needed on estimating lean
meat yield.
Descrição
Research Areas: Agriculture ; Veterinary Sciences ; Zoology
Palavras-chave
Light carcass Cut Video image analysis Prediction
Contexto Educativo
Citação
Batista AC, Santos V, Afonso J, Guedes C, Azevedo J, Teixeira A, Silva S. 2021. Evaluation of an image analysis approach to predicting primal cuts and lean in light lamb carcasses. Animals. 11(5):1368. Doi: 10.3390/ ani11051368
Editora
MDPI