Table 12-4. Mean values of serum minerals 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‡

 

-------- mg/kg --------

 

 

Ca

 

100.3 ± 0.9

 

97.3 ± 0.8

 

0.133

 

80-114

 

Cu

 

0.72 ± 0.02

 

0.62 ± 0.02

 

0.003**

 

0.72 ± 0.02§

 

Fe

 

1.46 ± .06

 

1.50 ± 0.06

 

0.664

 

0.57-1.62

 

Mg

 

20.0 ± 0.4

 

19.8 ± 0.4

 

0.400

 

15-29

 

P (total)

 

130.9 ± 2.5

 

127.3 ± 2.4

 

0.355

 

45-60¶

 

K

 

181.9 ± 2.6

 

184.8 ± 2.4

 

0.218

 

140.8-191.6

 

Na

 

3492 ± 20

 

3460 ± 18

 

0.380

 

3126-3310

 

Zn

 

0.74 ± 0.03

 

0.71 ± 0.02

 

0.448

 

0.68 ± 0.23#

 

 

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

† Repeated measures ANOVA. Fourteen different bleed dates, April to August 1998 and 1999. Least square means (±SEM).

‡ Taken from Duncan et al. (1994).

§ Taken from Saker et al. (1998).

¶ Taken from Puls (1994). Reference range is for inorganic P levels only, which average about 40% of total P levels.

# Taken from Underwood (1977).

 

<--Blood, Immunity, and Inflammation

Table of Contents

Tall Fescue Monograph