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. 2023 Apr 28;101:skad134. doi: 10.1093/jas/skad134

Figure 1.

Figure 1.

Changes in the overall ADG with supplementation of bacterial 6-phytase using a broken-line analysis. The break point was 600 ± 183 FTU/d of phytase supplementation when the overall ADG was 0.403 ± 0.014 kg/d. One slope broken-line model; the equation for overall ADG was Y = 0.403 − 0.00013 × zl; if phytase supplementation is ≥ breakpoint, then z; = 0; if phytase supplementation is < breakpoint, then zl = breakpoint − phytase supplementation. Values for phytase activity were based on the analyzed values. P-value for the plateau was < 0.001, for the slope was < 0.001, and for the breaking point was < 0.002. The breakpoint was converted from 600 FTU/d to 948 FTU/kg feed by dividing with the overall average feed intake (0.633 kg/d).