. 2022 Feb 10;9:810462. doi: 10.3389/fnut.2022.810462

Table 3.

Effect of dietary PNE supplementation on egg quality parameters of laying hens¹.

Treatment	CON	PNE100	PNE200	PNE400	SEM	P-value
Shell weight, g	10.38^a ^b	10.21^a	10.00^a	10.80^b	0.18	0.02
Yolk weight, g	25.29^a	26.69^b	26.69^b	25.99^a ^b	0.03	0.02
Shell strength, N	33.04	33.34	32.83	34.77	1.50	0.82
Shell thickness, μm	430.00^b	412.00^a ^b	390.00^a	426.00^b	0.01	0.03
Yolk color	3.30	3.30	3.35	3.40	0.14	0.96
Haugh unit	77.47^b^c	79.09^c	72.98^a	75.53^a ^b	1.12	0.01

^a,b

Within a row, means with no common superscript differ significantly (p < 0.05).

Means were calculated using 15 replicates (two eggs per replicate) per treatment.