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

Table 3 Effects of dietary protein/energy ratio and breed on growth performance of pigs

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 (n = 24)
Initial BW, kg	7.71^a	7.64^a	3.37^b	3.38^b	0.19	<0.001	0.88	0.83
Final BW, kg	22.95^a	23.06^a	17.29^b	17.91^b	0.81	<0.001	0.66	0.76
Average daily gain, g	390.80^a	395.40^a	253.10^b	264.10^b	15.36	<0.001	0.62	0.84
Average daily feed intake, kg	0.76^a	0.71^a	0.62^b	0.63^b	0.03	<0.001	0.42	0.41
Feed to gain ratio	1.97^b	1.87^b	2.53^a	2.38^a	0.07	<0.001	0.09	0.73
Growing phase (n = 16)
Initial BW, kg	24.74^a	25.15^a	20.55^b	19.66^b	0.66	<0.001	0.73	0.34
Final BW, kg	61.82^a	56.37^b	38.81^c	38.95^c	1.70	<0.001	0.13	0.12
Average daily gain, g	842.80^a	709.60^b	380.60^c	401.80^c	31.39	<0.001	0.09	0.02
Average daily feed intake, kg	1.96^a	1.64^b	1.79^b	1.68^b	0.05	0.23	<0.001	0.04
Feed to gain ratio	2.33^a	2.43^b	4.77^a	4.65^a	0.27	<0.001	0.98	0.70
Finishing phase (n = 8)
Initial BW, kg	65.03^a	62.83^a	44.07^b	45.82^b	1.07	<0.001	0.87	0.15
Final BW, kg	91.03^a	92.03^a	51.40^b	52.76^b	1.46	<0.001	0.52	0.92
Average daily gain, g	866.70^b	973.30^a	348.80^c	330.50^c	41.87	<0.001	0.40	0.24
Average daily feed intake, kg	3.12^a	3.07^a	1.69^b	1.83^b	0.06	<0.001	0.59	0.22
Feed to gain ratio	3.66^b	3.19^b	5.62^a	5.79^a	0.49	0.001	0.80	0.61

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

ISSN: 2049-1891