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. 2025 Mar 30;103:skaf101. doi: 10.1093/jas/skaf101

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© The Author(s) 2025. Published by Oxford University Press on behalf of the American Society of Animal Science.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Overall gain-to-feed ratio (G:F) of pigs fed diets with increasing BA intake. Overall G:F = −0.001 × BA intake × BA intake + 0.020 × BA intake + 0.41 (Max: 0.49 at 8.1 g/d), R² = 0.34; P value of the overall model: <0.001, P value of intercept: <0.001, and P value of BA intake × BA intake: <0.001; P value of BA intake: <0.001. The optimal BA level for G:F of pigs was 0.57% calculated based on overall ADFI (1,427 g/d). The experimental unit was a pen and the number of observations was 45.