. 2020 Apr 7;11:304. doi: 10.3389/fphys.2020.00304

TABLE 1.

Effects of wooden breast (WB) status, sex, the interaction of WB and sex, and body weight on the weight of the left pectoralis major, left pectoralis minor, left whole feathered wing, left external oblique, heart, lungs, liver, and spleen of broiler chickens.

		WB			Sex			WB × Sex					Body Weight

								Affected	Affected	Unaffected	Unaffected
		Affected	Unaffected	P-value	Male	Female	P-value	Male	Female	Male	Female	P-value	P-value
Broilers (n)		55	48		65	38		39	16	26	22
P.major (g)	Mean	425.51	400.59	0.002	402.70	423.41	0.079	417.84	433.19	387.56	413.63	0.505	<0.001
	SE	4.67	4.68		4.54	7.71		6.66	10.42	6.78	9.41
P.minor (g)	Mean	81.66	83.58	0.305	80.26	84.97	0.074	81.14^a,b	82.17^a,b	79.38^a	87.78^b	0.047	<0.001
	SE	1.55	1.61		1.54	2.06		1.89	2.61	1.98	2.41
Wing (g)	Mean	169.62	160.31	<0.001	169.07	160.87	0.008	174.72	164.53	163.42	157.20	0.350	<0.001
	SE	1.78	1.85		1.77	2.38		2.18	3.01	2.28	2.78
Ext. obl. (g)	Mean	7.53	7.03	0.213	6.88	7.68	0.153	7.60^a	7.46^a,b	6.15^b	7.90^a	0.018	0.006
	SE	0.26	0.28		0.26	0.40		0.35	0.52	0.37	0.48
Heart (g)	Mean	17.74	17.83	0.867	17.84	17.74	0.893	17.86	17.62	17.81	17.85	0.786	<0.001
	SE	0.32	0.33		0.31	0.50		0.44	0.67	0.46	0.61
Lungs (g)	Mean	15.51	16.35	0.209	17.23	14.64	0.006	16.58	14.45	17.88	14.83	0.483	0.158
	SE	0.52	0.54		0.52	0.71		0.65	0.91	0.68	0.84
Liver (g)	Mean	62.43	64.19	0.334	60.09	66.53	0.013	58.17	66.70	62.02	66.35	0.241	<0.001
	SE	1.30	1.36		1.29	1.86		1.68	2.42	1.76	2.22
Spleen (g)	Mean	4.20	4.46	0.223	4.03	4.62	0.056	3.83	4.57	4.24	4.67	0.460	<0.001
	SE	0.13	0.14		0.14	0.21		0.19	0.27	0.20	0.25

Analysis was performed using a mixed linear model approach with poultry house included as a random effect. Data are presented as the least square mean and standard error. Means not sharing a common superscript letter within the interaction effect are significantly different (P < 0.05, Tukey’s HSD test).