ArticleBMC veterinary research2026
Evaluation of the performance of the Light Gradient Boosting Machine (LightGBM) algorithm in predicting live weight in different goat breeds.
Article in BMC veterinary research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLive body weight is a key performance indicator in goat production, playing a crucial role in selection, feeding management, and economic efficiency. However, direct measurement of body weight under field conditions is often impractical due to limitations in equipment and labor. Therefore, reliable prediction models based on easily obtainable morphometric measurements are required. Recently, machine learning approaches have gained increasing attention in animal science due to their ability to model complex and non-linear relationships among variables.
methodsThis study evaluated the effectiveness of the Light Gradient Boosting Machine (LightGBM) algorithm for predicting live body weight in Ankara, Hair, Kilis, and Honamlı goat breeds. Relationships between live body weight and morphometric traits were examined using Pearson correlation analysis. LightGBM models were developed under different training-testing split ratios (65-35%, 70-30%, 75-25%, and 80-20%). Model performance was assessed using error metrics and variable importance analyses to determine the contribution of individual body measurements to prediction accuracy.
resultsThe results showed positive and statistically significant relationships between live weight and all morphometric measurements considered (p < 0.05). In particular, basic body measurements such as body length, chest circumference, and wither height were identified as the variables that contributed most to live weight estimation at all data splitting ratios. Variable significance analyses revealed that the LightGBM algorithm exhibited stable performance and high generalization capacity under different training-test ratios. However, the contribution of variables such as sex and birth weight to model performance was found to be limited.
conclusionsIn conclusion, the LightGBM algorithm has been determined to be an effective tool for quickly, practically, and reliably estimating live weight in different goat breeds. It is considered that this approach can contribute to the development of decision support systems for selection, herd management, and performance evaluation processes in small ruminant farming.
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