. 2021 Sep 10;11(3):483–499. doi: 10.5455/OVJ.2021.v11.i3.22

Table 4. Immunoglobulin concentrations and CORT levels (mean ±SE) in different broiler groups supplied with clay-filtered water.

Treatments	Immunoglobulin concentrations		Stress marker
Treatments	IgG mg/dl	IgM mg/dl	Cortisol mcg/dl
Overall means concerning treatments
G1	1,582^d ± 4.30	466^c ± 1.98	7.22^c ± 0.27
G2	1,592^cd ± 4.48	523^b ± 3.24	6.31^c ± 0.35
G3	1,656^abc ± 2.90	557^b ± 1.44	5.94^c ± 0.29
G4	1,674^ab ± 2.94	572^b ± 1.73	5.74^c ± 0.37
G5	1,721^a ± 2.68	696^a ± 1.88	5.57^c ± 0.31
G6	1,637^bcd ± 2.28	709^a ± 1.80	9.11^b ± 1.49
Gc	1,262^e ± 2.88	321^d ± 0.76	15.22^a ± 0.18
p-value	0.002	0.001	0.002

Means carrying different superscripts in the same column are significantly different at (p≤ 0.05) or highly significantly different at (p < 0.01). Means carrying the same superscripts in the same column are non-significantly different at (p < 0.05).

(G1): broilers supplied with clay-filtered water previously challenged with lead nitrate (500 mg/l); (G2): broilers supplied with clay-filtered water previously challenged with calcium sulfate (80 mg/l); (G3): boilers supplied with clay-filtered water previously challenged with yeast extract 5% (5 mg/l); (G4): broilers supplied with clay-filtered water previously challenged with diazinon (2.5 mg/l); (G5): broilers supplied with clay-filtered water previously challenged with Salmonella Typhimurium 1.5 × 10⁶ CFU/ml; (G6): broilers supplied with clay-filtered water previously challenged with E. tenella 1 × 10⁵ OPG/ml; (Gc): control broilers group; (IgG): Immunoglobulin G; (IgM): Immunoglobulin M; (CORT): cortisol; (SE): standard error.