Table 8.

Gene expression in stroma of ovary of Chinese Yellow broiler breeders fed diets with different copper content.

Variable	Dietary Cu content, mg/kg						SEM1	P-value2
	3.5	8.5	13.5	23.5	43.5	83.5		Cu level	Linear	Quadratic
Atox1	2.07	2.14	2.22	2.11	2.07	2.03	0.086	0.685
Atp7b	0.261b,c	0.319b,c	0.594a	0.479a,b	0.154c	0.362b	0.076	0.004	0.618	0.875
Cox11	1.02	1.04	1.09	1.03	1.09	0.99	0.054	0.740
Cox17	1.92	1.96	2.05	1.85	2.05	1.81	0.063	0.054
Commd1	0.384b	0.860a	0.848a	0.447b	0.363b	0.565b	0.090	0.001	0.339	0.325
Cutc	1.33	1.41	1.37	1.22	1.26	1.22	0.055	0.097

Abbreviations: Atox1, Antioxidant 1 copper chaperone; Atp7b, ATPase copper transporting beta; Commd1, Copper metabolism domain containing 1; Cox11, Cytochrome c oxidase copper chaperone COX11; Cox17, COX17 cytochrome c oxidase copper chaperone; Cutc, cutC copper transporter.

^a-cMeans within row with no common superscript differ (P < 0.05).

¹SEM (n = 6).

²Linear and quadratic contrasts examined only when Cu level was significant.