Effects of dietary protein/energy ratio on growth performance, carcass trait, meat quality, and plasma metabolites in pigs of different genotypes

Liu, Yingying; Kong, Xiangfeng; Jiang, Guoli; Tan, Bi’e; Deng, Jinping; Yang, Xiaojian; Li, Fengna; Xiong, Xia; Yin, Yulong

doi:10.1186/s40104-015-0036-x

Journal of Animal Science and Biotechnology

Table 6 Effects of dietary protein/energy ratio and breed on muscle chemical composition in pigs, %

From: Effects of dietary protein/energy ratio on growth performance, carcass trait, meat quality, and plasma metabolites in pigs of different genotypes

Item	Landrace pig		Bama mini-pig		SEM	P-value
Item	GB diets	NRC diets	GB diets	NRC diets	SEM	Breed	Diet	B × D
Nursery phase
Longissimus dorsi muscle
Dry matter	23.75	23.68	23.61	24.09	0.33	0.69	0.55	0.41
Intramuscular fat	1.22^b	1.06^b	2.82^a	3.54^a	0.26	<0.001	0.30	0.10
Crude protein	18.34^b	19.69^a	19.47^a	19.61^a	0.36	0.17	0.05	0.11
Biceps femoris muscle
Dry matter	22.11^bc	21.39^c	23.39^a	23.15^ab	0.42	0.001	0.26	0.57
Intramuscular fat	0.86^c	0.99^c	3.25^a	2.45^b	0.22	<0.001	0.14	0.05
Crude protein	17.60^bc	16.49^c	18.51^ab	19.01^a	0.40	<0.001	0.46	0.05
Psoas major muscle
Dry matter	22.21	22.42	21.77	22.37	0.35	0.50	0.27	0.59
Intramuscular fat	0.89^b	0.94^b	2.48^a	2.32^a	0.20	<0.001	0.78	0.62
Crude protein	16.94^b	17.41^b	17.72^ab	18.56^a	0.35	0.01	0.09	0.63
Growing phase
Longissimus dorsi muscle
Dry matter	25.07^b	25.05^b	29.11^a	27.37^a	0.63	<0.001	0.24	0.25
Intramuscular fat	1.16^b	1.50^b	3.73^a	3.50^a	0.34	<0.001	0.89	0.48
Crude protein	21.27^b	20.77^b	21.98^ab	22.73^a	0.39	0.007	0.79	0.18
Biceps femoris muscle
Dry matter	23.15^b	22.89^b	26.79^a	23.76^b	0.75	0.01	0.05	0.10
Intramuscular fat	1.01^b	0.81^b	2.77^a	1.68^b	0.30	<0.001	0.05	0.17
Crude protein	19.80^b	19.24^b	22.13^a	19.35^b	0.71	0.13	0.04	0.16
Psoas major muscle
Dry matter	23.67^c	23.68^c	26.78^a	24.97^b	0.36	<0.001	0.04	0.03
Intramuscular fat	1.06^b	1.19^b	4.66^a	2.25^b	0.36	<0.001	0.01	0.005
Crude protein	19.82	20.17	21.07	20.84	0.51	0.10	0.91	0.62
Finishing phase
Longissimus dorsi muscle
Dry matter	26.16^c	26.56^bc	28.74^a	28.26^ab	0.58	0.004	0.95	0.50
Intramuscular fat	2.59^b	2.48^b	5.85^a	4.50^a	0.44	<0.001	0.15	0.22
Crude protein	21.32	22.02	21.73	21.93	0.47	0.76	0.40	0.64
Biceps femoris muscle
Dry matter	24.97^b	25.18^b	25.43^b	28.93^a	0.77	0.02	0.04	0.07
Intramuscular fat	1.42^c	1.88^c	3.65^b	5.23^a	0.31	<0.001	0.01	0.12
Crude protein	20.84^ab	21.19^ab	19.41^b	22.85^a	0.81	0.90	0.05	0.10
Psoas major muscle
Dry matter	25.47	24.70	26.42	26.04	0.57	0.10	0.40	0.77
Intramuscular fat	2.46^b	2.43^b	4.01^a	4.00^a	0.38	0.002	0.96	0.97
Crude protein	21.08	21.30	20.70	20.91	0.48	0.51	0.71	0.99

^{a, b, c}Mean values with unlike superscript letters were significantly different (P < 0.05). n = 8
GB diets, Chinese conventional diets; B × D, breed × diet interaction

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ISSN: 2049-1891

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