. 2021 Oct 1;100(12):101507. doi: 10.1016/j.psj.2021.101507

Table 3.

Evaluation of Pekin duck stress parameter results under four experimental monochromatic light-emitting diode fixtures.

Treatment	Corticosterone¹pg/mL	Heterophil to lymphocyte ratio¹	Asymmetry score²
Blue	9,005^a	0.58^a	2.55^a
Green	6,058^b	0.40^b	0.69^c
Red	8,965^a	0.55^a	1.49^b
White	5,578^b	0.35^b	0.73^c
SEM	435.0	0.023	0.098
P-value	0.005	0.001	0.000

Data analysis of results was conducted using One-way ANOVA.

^a-c

Differences for means in each column are indicated as by superscripts a-c, where P ≤ 0.05.

N = 160 ducks.

N = 480 ducks.