Effects of dietary protein restriction on muscle fiber characteristics and mTORC1 pathway in the skeletal muscle of growing-finishing pigs

Table 4 Effect of the restricted protein diets on the content of ATP, ADP, AMP and EC value in the skeletal muscle of different locations of growing-finishing pigs¹

Parameter, ppm	Dietary treatment²			SEM³	P value
Parameter, ppm	AP (16 % CP)	MP (13 % CP)	LP (10 % CP)	SEM³	P value
Longissimus dorsi muscle
ATP	49.56^b	172.35^a	85.19^b	13.41	<0.01
ADP	312.26	314.65	243.31	24.41	0.10
AMP	50.30^b	65.08^ab	87.97^a	8.57	0.02
EC	0.50^b	0.60^a	0.50^b	0.01	<0.01
Psoas major muscle
ATP	106.54^a	59.06^b	75.23^ab	14.47	0.07
ADP	189.75	181.14	181.28	16.83	0.92
AMP	89.57	97.42	113.81	10.24	0.26
EC	0.52^a	0.44^b	0.45^b	0.01	<0.01
Biceps femoris muscle
ATP	33.17^b	42.45^b	67.66^a	5.81	<0.01
ADP	262.07	289.66	280.42	14.77	0.43
AMP	56.31	57.56	65.84	5.93	0.48
EC⁴	0.47^b	0.48^ab	0.50^a	0.01	0.02

¹Means within different superscript letters are significantly different (P < 0.05). n = 6
²AP = adequate protein; MP = moderately restricted protein; LP = low protein
³SEM = standard error of mean
⁴EC = energy charge. EC was calculated using the following formula: EC = (ATP + 0.5ADP)/(ATP + ADP + AMP)

ISSN: 2049-1891