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This study aims to identify the optimal slaughter age for various commercial pig genetic lines and sexes through growth modeling.

Prediction of optimal slaughter age in four commercial pig genetic lines using GAM growth and backfat curves combined with a desirability optimization approach

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The study predicts optimal slaughter age in different pig lines, suggesting improvements in efficiency and quality.

This study aims to identify the optimal slaughter age for various commercial pig genetic lines and sexes through growth modeling.
Modeled growth dynamics using Generalized Additive Models (GAMs) for weight and backfat.
Defined operating ranges for live weight, feed intake, and age in weeks.
Developed a composite desirability function for multi-criteria optimization of slaughter weeks.
Optimal slaughter weeks determined to be between 20 and 21 weeks for all lines and sexes.
When considering economic factors, optimal profit weeks shifted to between 22 and 23 weeks.
Females consistently peaked earlier in weight and fat deposition than males.

Herrera-Rios et al. (2026) studied this question.

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