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. 2024 Feb 29;102:skae052. doi: 10.1093/jas/skae052

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© The Author(s) 2024. 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 1. — Changes in the ADG (g/d) with supplementation of β-mannanase using a broken-line analysis. The breakpoint was 438 U/d of β-mannanase supplementation when ADG was 683 g/d. The equation for ADG was Y = 683 − 0.41 × zl; if β-mannanase supplementation is lower than the breakpoint, then z = 0; if β-mannanase supplementation is higher than the breakpoint, then zl = breakpoint − β-mannanase supplementation. The P values for the plateau was <0.0001, for the slope was 0.0415, and for the breaking point was 0.0003. The breakpoint was converted from 438 U/d to 386 U/kg of feed by dividing it by the overall average feed intake (1.133 kg/d).