Stocking Density Induced Stress on Plasma Cortisol and Whole Blood Glucose Concentration in Nile Tilapia Fish (Oreochromis niloticus) of Lake Victoria, Kenya

Table 3

Cortisol concentrations and group means for LSD and HSD triplicates, at .

Sample number	Cortisol concentrations, ×10 in ngml^−1
	LSD1	LSD2	LSD3	Mean	HSD1	HSD2	HSD3	Mean
1	5.2	3.5	5.6	4.8	5.6	6.7	4.28	5.5
2	4.2	5.6	0.6	3.5	8.3	7.2	6.7	7.4
3	5.0	5.2	5.4	5.2	6.0	5.9	6.5	6.1
4	—	5.9	—	—	—	6.0	—	—
Mean	4.80	4.80	3.87	4.50	6.60	6.60	5.80	6.30
SD	0.53	1.12	2.44	0.89	2.12	0.64	1.34	1.08
SE	0.31	0.65	1.41	—	1.22	0.37	0.77	—
SEM	—	—	—	0.51	—	—	—	0.62