Table 5.

Effects of different formula treatments on serum total protein and amino acid contents in LBW suckling piglets.

Item2	Group1			p-value
	BF	SF	HF
Total protein, g/L	47.23 ± 2.41	47.43 ± 2.57	48.17 ± 3.34	0.970
Essential amino acids, μg/mL
Thr	25.83 ± 2.83b	8.69 ± 1.91a	33.46 ± 5.09b	0.001
Val	9.14 ± 0.78b	6.74 ± 0.62a	7.15 ± 0.54a	0.044
Ile	4.25 ± 0.28	3.45 ± 0.4	3.53 ± 0.33	0.226
Leu	6.87 ± 0.56	5.76 ± 0.55	5.47 ± 0.39	0.153
Met	4.05 ± 0.68	3.94 ± 0.46	4.91 ± 0.44	0.401
Phe	5.79 ± 0.67	6.24 ± 0.63	6.06 ± 0.36	0.856
Lys	9.59 ± 1.43	11.21 ± 1.86	9.13 ± 1.42	0.630
His	4.35 ± 0.49a	7.07 ± 1.01b	4.09 ± 0.57a	0.020
Arg	8.83 ± 0.44	7.98 ± 0.75	8.96 ± 0.75	0.544
Non-essential amino acids, μg/mL
Asp	2.42 ± 0.55	2.33 ± 0.33	2.37 ± 0.24	0.988
Ser	9.68 ± 1.2	9.51 ± 1.03	10.95 ± 0.89	0.583
Glu	13.54 ± 1.99	14.2 ± 1.82	12.2 ± 1.03	0.694
Gly	35.78 ± 5.01	42.12 ± 4.37	38.4 ± 4.75	0.643
Ala	21.6 ± 2.03	20.06 ± 2.29	18.81 ± 1.51	0.614
Cys	2.58 ± 0.35	2.37 ± 0.37	2.72 ± 0.35	0.780
Pro	9.21 ± 1.31	11.1 ± 1.2	9.9 ± 1.43	0.603
Tyr	3.24 ± 0.34	4.06 ± 0.39	3.19 ± 0.25	0.149
EAA	78.71 ± 3.57b	61.08 ± 5.54a	82.75 ± 6.68b	0.029
TAA	172.79 ± 11.85	162.64 ± 15.11	179.83 ± 9.99	0.629

¹BF, basal infant formula; SF, standard premature infant formula; HF, hydrolyzed protein formula.

²EAA, essential amino acid; TAA, total amino acid.

Data are expressed as means ± SEM (n = 8). Means within a row with different superscripts are significantly different (P < 0.05).