Table 6.

Effects of L. paracasei LK01 on intestinal digestive enzyme activity indices in laying hens.

Items	CON	LLP	MLP	HLP	p-value
Duodenum
Protease IU/mL	36.01 ± 3.76	31.26 ± 5.31	34.50 ± 1.70	33.07 ± 5.74	0.759
Amylase U/L	47.25 ± 4.28	39.88 ± 2.19	43.13 ± 1.16	36.75 ± 1.40	0.142
Lipase U/mL	27.83 ± 0.19	27.64 ± 3.25	23.79 ± 1.61	31.02 ± 2.46	0.211
Jejunum
Protease IU/mL	30.28 ± 1.55	29.05 ± 1.82	34.52 ± 3.63	30.43 ± 2.54	0.324
Amylase U/L	42.62 ± 0.29	34.80 ± 0.50	33.64 ± 1.34	31.91 ± 2.55	0.095
Lipase U/mL	27.66 ± 2.90	34.80 ± 0.50	33.64 ± 1.34	31.91 ± 2.55	0.188
Ileum
Protease IU/mL	30.98 ± 2.85	31.26 ± 5.31	34.50 ± 1.70	37.80 ± 1.74	0.416
Amylase U/L	43.89 ± 2.98	41.01 ± 0.99	41.45 ± 3.12	39.66 ± 1.55	0.563
Lipase U/mL	28.18 ± 0.91	27.67 ± 2.74	27.50 ± 3.52	31.91 ± 2.55	0.297

CON, control, basal diet; LLP, basal diet + 10⁶ CFU/kg L. paracasei LK01; MLP, basal diet + 10⁷ CFU/kg L. paracasei LK01; HLP, basal diet + 10⁸ CFU/kg L. paracasei LK01. Different letters in the same row indicate significant differences (p < 0.05). Results are expressed as mean ± standard error of the mean (SEM). n = 8.