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Table 1 Effect of abrupt weaning at housing on total leukocyte and differential counts in beef calves.

From: Effect of abrupt weaning at housing on leukocyte distribution, functional activity of neutrophils, and acute phase protein response of beef calves

  

Day (d) relative to housing

P-values1

Cell type

(× 103cells/μL)

 

-7

02

2

7

14

T

S

T × S

Total leukocytes

C

10.3 ± 0.61

10.5 ± 0.31

10.8x ± 0.47

10.5 ± 0.92

10.3 ± 0.32

0.03

0.0005

0.01

 

W

10.6 ± 0.62

10.3a ± 0.31

13.3b, c, y ± 0.47

11.2a, c ± 0.92

10.2a ± 0.32

   

Neutrophils

C

2.8 ± 0.11

2.9 ± 0.17

3.2x

± 0.65

2.9 ± 0.64

2.5 ± 0.23

0.006

< 0.0001

< 0.0001

 

W

2.7 ± 0.11

2.5a ± 0.18

6.6b, y ± 0.68

2.7a ± 0.64

2.7a ± 0.24

   

Lymphocytes

C

7.0 ± 0.19

6.7 ± 0.21

6.6x ±

0.22

6.8 ± 0.49

6.9 ± 0.36

0.3

0.0006

0.002

 

W

6.9 ± 0.19

6.9a ± 0.22

5.2b, y ± 0.22

7.3a ± 0.49

6.7a ± 0.37

   

Monocytes

C

0.64 ± 0.10

0.46 ± 0.05

0.59 ± 0.07

0.54 ± 0.11

0.47 ± 0.05

0.5

0.1

0.16

 

W

0.60 ± 0.11

0.48 ± 0.06

0.59 ± 0.06

0.59

± 0.10

0.50 ± 0.05

   

Eosinophils

C

0.29 ± 0.05

0.33 ± 0.10

0.31 ± 0.12

0.59 ± 0.11

0.35 ± 0.07

0.3

0.06

0.4

 

W

0.21 ± 0.05

0.31 ± 0.11

0.38 ± 0.13

0.29 ± 0.10

0.24 ± 0.07

   

Basophils

C

0.12 ± 0.02

0.15 ± 0.02

0.13 ± 0.01

0.11 ± 0.02

0.12 ± 0.01

0.6

0.5

0.8

 

W

0.11 ± 0.02

0.12 ± 0.02

0.12 ± 0.01

0.11 ± 0.02

0.13 ± 0.01

   
  1. 1T = treatment, S = sampling time, T × S = treatment × sampling time interactions.
  2. W = abruptly weaned, C = non-weaned (control) calves.
  3. a, b, cWithin a row, least squares means without a common superscript differ (P <0.05).
  4. x, yWithin a column (day) for each variable, least squares means without a common superscript differ (P <0.05). 2Baseline is defined as d 0 for each variable. Data presented are least squares means ± s.e.m.