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Table 6 Effect of concentrate supplementation for 26 d pre-weaning on plasma metabolites in abruptly weaned and housed beef calves

From: Effect of pre-weaning concentrate supplementation on peripheral distribution of leukocytes, functional activity of neutrophils, acute phase protein and behavioural responses of 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     
βHB 2 , mmol/L CS 0.19a 0.27b 0.25a 0.30b 0.014 NS * NS
  NCS 0.17a 0.24b 0.23a 0.28c     
NEFA 3 , mmol/L CS 0.17 0.24 0.17 0.13 0.023 NS * NS
  NCS 0.13a 0.33b 0.20ab 0.09a     
  1. 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.
  2. CS = concentrate supplement prior to abrupt weaning (n = 10), NCS = no concentrate supplement prior to abrupt weaning (n = 10).