. 2024 May 31;66(3):493–503. doi: 10.5187/jast.2023.e64

Table 2. The effects of CP and AA level on growth performance in growing pigs.

Variable	CP (%)				SEM	p-value
	17.2	15.7
		Lysine (%)
	1.10	1.10	1.15	1.20
BW (kg)
Initial	16.78	16.71	16.69	16.69	0.11	0.827
Final	51.43^a	48.72^c	49.84^bc	50.75^ab	0.51	0.001
Phase 1 (d 0–14)
ADG (kg)	812^a	638^b	707^ab	763^a	38.31	0.004
ADFI (kg)	1,552	1,433	1,488	1,452	64.75	0.316
G/F	0.524^a	0.445^b	0.475^ab	0.526^a	0.02	0.012
Phase 2 (d 15–28)
ADG (kg)	827	816	825	831	47.53	0.991
ADFI (kg)	1,656	1,653	1,665	1,657	50.28	0.995
G/F	0.499	0.493	0.494	0.502	0.02	0.953
Phase 3 (d 28–42)
ADG (kg)	837	832	836	0.839	23.48	0.993
ADFI (kg)	1,634	1,611	1,616	1,631	15.83	0.414
G/F	0.512	0.517	0.517	0.514	0.02	0.987
Overall (d 0–42)
ADG (kg)	825^a	762^c	789^bc	811^ab	10.64	< 0.001
ADFI (kg)	1,614	1,566	1,590	1,580	23.06	0.251
G/F	0.511^a	0.487^b	0.497^ab	0.513^a	0.01	0.010

^a,b

Means different superscript letters indicate significant differences (p < 0.05).

CP, crude protein; AA, amino acid; BW, body weight; ADG, average daily gain; ADFI, average daily feed intake; G/F, feed efficiency.