. 2022 Jun 24;9:916625. doi: 10.3389/fvets.2022.916625

Table 3.

Effect of TTO on the genes expression of GH, IGF-I, IGF-II, and MSTN of finishing pigs (n = 6).

		Treatment¹
Sites	Symbol	CON	LTO	MTO	HTO	SEM	P-value
Liver	GH	1.06	1.02	1.52	1.13	0.09	0.21
	IGF-I	1.03^b	2.98^a	4.25^a	3.06^a	0.33	0.002
	IGF-II	1.01	0.93	0.93	0.78	0.05	0.47
	MSTN	1.02^a	0.69^b	0.73^b	0.70^b	0.47	0.03
LD muscle	GH	1.02^b	1.17^ab	1.88^a	1.94^a	0.15	0.04
	IGF-I	1.00^b	1.11^b	1.72^a	1.24^b	0.07	<0.001
	IGF-II	1.02	1.29	1.03	0.98	0.66	0.36
	MSTN	1.00^a	0.72^b	0.73^b	0.74^b	0.04	0.007
Back fat	GH	1.01	1.10	1.32	1.26	0.08	0.48
	IGF-I	1.01	1.12	1.10	1.08	0.07	0.95
	IGF-II	1.01	1.04	1.20	0.96	0.07	0.70

^{a, b}Means in the same row with different superscripts differ significantly for treatment effect. ¹CON (control), pigs receiving a control diet; LTO (low tea tree oil supplemented treatment), pigs receiving a control diet supplemented with 100 mg/kg tea tree oil; MTO (middle tea tree oil supplemented treatment), pigs receiving a control diet supplemented with 200 mg/kg tea tree oil; HTO (high tea tree oil supplemented treatment), pigs receiving a control diet supplemented with 300 mg/kg tea tree oil; TTO, tea tree oil.