Table 4 The effect of nano-zinc oxide and heat stress on hematological parameters of African catfish (Clarias gariepinus)

RBCs (Million/ µl)

2.97 ± 0.07^a

2.72 ± 0.05^b

2.47 ± 0.03^c

2.55 ± 0.02^bc

< 0.001

Hb (Mg/dl)

8.88 ± 0.36^a

7.63 ± 0.16^b

7.42 ± 0.18^b

6.83 ± 0.12^b

< 0.001

(Ht) PCV %

32.22 ± 0.28^a

30.8 ± 0.38^b

29.65 ± 0.22^c

28.13 ± 0.1^d

< 0.001

MCV (µm³)

108.84 ± 2.43^b

113.57 ± 2.64^ab

120.27 ± 1.27^a

110.37 ± 0.99^b

0.003

MCH (Pg)

29.91 ± 0.8^a

28.14 ± 0.75^ab

30.08 ± 0.66^a

26.8 ± 0.44^b

0.007

MCHC (g/dl)

27.59 ± 1.19^a

24.79 ± 0.54^ab

25.03 ± 0.68^ab

24.29 ± 0.44^b

0.029

Platelets (Thousands/µl)

201.83 ± 3.34^a

193.17 ± 2.29^b

187.83 ± 0.87^b

186.17 ± 0.91^b

< 0.001

WBCs (Thousands/µl)

10.67 ± 0.29^a

9.72 ± 0.16^b

9.55 ± 0.21^b

10.12 ± 0.16^ab

0.007

Neutrophiles %

12 ± 0.37^b

12 ± 0.37^b

15.5 ± 0.43^a

13.17 ± 0.31^b

< 0.001

Lymphocytes %

81 ± 0.37^a

80.83 ± 0.31^a

74.17 ± 0.31^c

78.33 ± 0.33^b

< 0.001

Monocytes %

3.5 ± 0.22^b

3.5 ± 0.22^b

5.33 ± 0.56^a

4.5 ± 0.22^ab

0.002

Eosinophiles %

3.5 ± 0.22

3.83 ± 0.4

5 ± 0.68

4 ± 0.37

0.139