Table 6

Effect of concentrate supplementation for 26 d pre-weaning on plasma metabolites in abruptly weaned and housed beef calves


Days post-weaning

P-values1


Metabolite

0

2

7

14

Pooled s.e.m.

T

S

T×S


Total protein, g/L

CS

70.3a

73.9b, x

72.8a

70.6a

0.98

*

NS

NCS

68.3a

70.9b.y

72.0b

67.6a

Albumin, g/L

CS

34.0a

33.9a

35.4a

31.6b

0.45

*

NS

NCS

33.2a

33.4a

33.4a

31.0b

Globulin, g/L

CS

36.6a

38.9b, x

37.7a

38.9b

0.80

NS

**

*

NCS

35.1a

37.6b, y

38.4b

36.6a

Creatine kinase,U/L

CS

295

304

359

317

42.7

NS

NS

NS

NCS

307

297

324

350

Urea, mmol/L

CS

4.2a

3.1b

3.1b

2.5c

0.17

NS

***

NS

NCS

4.3a

3.3b

3.0b

2.5c

Glucose, mmol/L

CS

4.5

4.6

4.3

4.3

0.08

NS

NS

NS

NCS

4.5

4.8

4.3

4.3

βHB2, mmol/L

CS

0.19a

0.27b

0.25a

0.30b

0.014

NS

*

NS

NCS

0.17a

0.24b

0.23a

0.28c

NEFA3, mmol/L

CS

0.17

0.24

0.17

0.13

0.023

NS

*

NS

NCS

0.13a

0.33b

0.20ab

0.09a


1Levels of significance: NS = P > 0.05, † = P = 0.06, * = P < 0.05, ** = P < 0.01, *** = P < 0.001. a, b, cWithin a row, least squares means without a common superscript differ (P <0.05). x, yWithin a column (day) for each variable, least squares means without a common superscript differ (P <0.05). T = treatment, S = sampling time, T × S = treatment × sampling time interaction. 2βHB = β-hydroxybutyrate, 3NEFA = non-esterified fatty acids.

CS = concentrate supplement prior to abrupt weaning (n = 10), NCS = no concentrate supplement prior to abrupt weaning (n = 10).

Lynch et al. BMC Veterinary Research 2012 8:1   doi:10.1186/1746-6148-8-1

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