Table 3

Effect of weaning induced stress on red blood cell (RBC) number, haemoglobin (HGB) concentration, haematocrit (HCT) %, mean cell haemoglobin concentration (MCHC) and platelet number in weaned beef calves.

Gender

Location

s.e

Time

s.e.

P-Values




Variable

Male

Female

Near

Away

0

1

2

3

7

11

G

L

T

I




RBC

10.2

9.5

9.8

9.9

0.29

10.6

10.6

10.2

10.7

10.7

6.6c

0.24

NS

NS

***

NS

(×106 cells/μL)

HGB

12.4

12.3

12.4

12.3

0.10

12.4

12.5

12.4

12.6

12.2

12.2

0.10

NS

NS

NS

NS

(g/dL)

HCT

31.6

30.9

31.5

31.0

0.67

33.7

33.5

32.4a

33.9

33.1

21.1c

0.62

NS

NS

**

NS

(%)

MCHC

41.5

40.9

40.8

41.6

0.59

36.9

37.4

38.2

36.9

36.9

60.7c

0.93

NS

NS

***

*1

(g/dL)

Platelet

872.1

741.1

819.0

794.1

31.6

815.9

952.5c

953.2c

882.8

739.5a

495.6c

31.8

**

NS

**

**2

(×103 cells/μL)


The values are expressed as least squares means (Lsmeans) and s.e.

G = gender, L = location, T = time, I = interaction, NS = not significant (P > 0.05). * = P < 0.05, ** = P < 0.01, *** = P < 0.001.

a, b, cWithin rows, Lsmeans differ from pre-weaning baseline by P < 0.05, P < 0.01 and P < 0.001, respectively.

1Gender × Location × Time interaction, near male 57.9 vs away male 68.1 at time 7

2Gender × Time interaction, 857.9 vs 773.8, 1043.4 vs 861.7, 1037.9 vs 868.5, 1013.9 vs 751.7, 787.8 vs 691.2, 491.6 vs 499.7 for male and female calves at time 0, 1, 2, 3, 7 and 11, respectively.

O'Loughlin et al. BMC Veterinary Research 2011 7:45   doi:10.1186/1746-6148-7-45

Open Data