Low crude protein formulation with supplemental amino acids for its impacts on intestinal health and growth performance of growing-finishing pigs

Table 5 Growth performance of pigs (20 to 40 kg) fed low CP diets with additional L-Trp supplementation (Exp. 1)

Item	CON¹	LCP²	LCPT³	SEM	P value
BW, kg
Initial	19.6	19.7	19.7	1.1	0.930
d 7	23.4^b	24.3^a	24.2^a	1.3	0.005
d 14	28.0^b	28.9^a	29.2^a	1.5	0.011
d 21	33.2^B	34.0^AB	34.3^A	1.7	0.099
d 28	40.2	40.6	41.2	1.8	0.350
ADG, kg/d
d 0 to 7	0.54^b	0.66^a	0.64^a	0.04	0.003
d 7 to 14	0.65	0.66	0.71	0.04	0.149
d 14 to 21	0.75	0.74	0.74	0.04	0.828
d 21 to 28	0.99	0.94	0.98	0.04	0.480
d 0 to 28	0.73	0.75	0.77	0.03	0.393
ADFI, kg/d
d 0 to 7	1.09^B	1.21^A	1.19^AB	0.07	0.075
d 7 to 14	1.30^b	1.37^ab	1.44^a	0.08	0.018
d 14 to 21	1.48	1.49	1.47	0.07	0.989
d 21 to 28	1.92	1.88	1.91	0.08	0.947
d 0 to 28	1.45	1.49	1.51	0.07	0.463
G:F
d 0 to 7	0.50^b	0.54^a	0.55^a	0.01	0.012
d 7 to 14	0.50	0.48	0.50	0.02	0.495
d 14 to 21	0.50	0.50	0.51	0.02	0.560
d 21 to 28	0.52	0.50	0.51	0.01	0.248
d 0 to 28	0.51	0.50	0.52	0.01	0.385

¹Control diet (CON)
²Low CP diet (LCP)
³Low CP diet + L-Trp (LCPT)
^a,bMeans without a common superscript letter within a row differ (P < 0.05), n = 30
^A,BMeans without a common superscript letter within a row tend to differ (0.05 ≤ P < 0.10), n = 30

ISSN: 2049-1891