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. 2025 Nov 21;13:e20204. doi: 10.7717/peerj.20204

Table 1. Effect of pistachio hull (PH) doses on live weight, egg weight, egg yield, egg mass, feed consumption and feed conversion ratio.

Traits Control PH 2% PH 4% PH 6% L Q C
Beginning LW, g 315.2 ± 35.0 328.9 ± 41.9 322.9 ± 38.2 332.8 ± 32.2 p = 0.144 p = 0.333 p = 0.331
Final LW, g 333.9ab ± 45.6 356.5a ± 32.6 326.1b ± 42.4 350.6a ± 31.8 p = 0.589 p = 0.859 P = 0.026
Egg weight, g 12.57c ± 0.6 13.05ab ± 0.7 12.91b ± 0.6 13.33a ± 0.7 P = 0.000 P = 0.000 P = 0.000
Egg yield, % 74.9 ± 2.4 66.0 ± 3.6 76.4 ± 4.4 71.7 ± 5.7 p = 0.956 p = 0.832 p = 0.057
Egg mass, g/bird/day 9.41 ± 0.1 8.45 ± 0.3 9.70 ± 0.3 9.09 ± 0.4 p = 0.867 p = 0.903 p = 0.091
Feed intake, g 1,440.2b ± 34.1 1,455.3b ± 14.2 1,544.9a ± 29.8 1,542.9a ± 50.4 p = 0.002 p = 0.011 p = 0.009
FCR 0.68b ± 0.0 0.78a ± 0.0 0.71ab ± 0.1 0.76a ± 0.0 p = 0.195 p = 0.282 P = 0.041

Notes.

Means within a row with different superscripts differ significantly (p < 0.05). Data are presented as mean ± Standard Error of the Mean (SEM).

PH
pistachio hull
L
Linear
Q
Quadratic
C
Cubic
LW
Live weight
FCR
Feed Conversion Ratio (feed/egg mass)