Table 12-1. Hemogram values for steers grazing endophyte free and endophyte infected tall fescues.†

Item

 

E- tall fescue

(n = 8)

E+ tall fescue

(n = 8)

P > F

 

Reference range‡

 

Red blood cells, 1 ´ 106/mL

 

8.33 ± 0.15

 

8.83 ± 0.15*

 

0.150

 

5-10

 

Hemoglobin, g/dL

 

12.50 ± 0.17

 

12.60 ± 0.17

 

0.747

 

8-15

 

Hematocrit, %

 

34.40 ± 0.48

 

34.80 ± 0.48

 

0.487

 

24-46

 

Mean corpuscular volume, fL

 

41.40 ± 0.46

 

39.50 ± 0.46**

 

0.004

 

40-60

 

Mean corpuscular hemoglobin, pg

 

15.10 ± 0.18

 

14.30 ± 0.18**

 

0.002

 

11-17

 

Mean corpuscular hemoglobin concentration, g/dL

 

36.40 ± 0.20

 

36.20 ± 0.20

 

0.385

 

30-36

 

Platelets, 1 ´ 103/mL

 

573.00 ± 37.00

 

586.00 ± 0.37

 

0.783

 

100-800

 

Mean platelet volume, fL

 

7.70 ± 0.33

 

7.10 ± 0.36

 

0.217

 

3.5-6.5

 

White blood cells, 1 ´ 103/mL

 

7.57 ± 0.29

 

8.20 ± 0.29

 

0.109

 

4-12

 

Neutrophils, 1 ´ 103/mL

 

2.44 ± 0.21

 

2.45 ± 0.21

 

0.992

 

0.6-4

 

Lymphocytes, 1 ´ 103/mL

 

6.55 ± 0.16

 

6.66 ± 0.16

 

0.658

 

2.5-7.5

 

Monocytes, 1 ´ 103/mL

 

0.33 ± 0.03

 

0.36 ± 0.03

 

0.338

 

<0.0-0.9

 

Eosinophils, 1 ´ 103/mL

 

0.68 ± 0.06

 

0.48 ± 0.06*

 

0.024

 

<0.0-2.4

 

Basophils, 1 ´ 103/mL

 

0.001 ± 0.001

 

0.002 ± 0.001

 

0.676

 

<0.0-0.2

 

* P < .05.; ** P < .01. From Oliver et al. (2000a).

† Repeated measures ANOVA. Twenty different bleed dates, April-August 1996 to 1998. Least square means (±SEM).

‡ Taken from Duncan et al. (1994) and Clinical Chemistry Service, College of Veterinary Medicine, University of Tennessee.

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Tall Fescue Monograph