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Table 5 Effects of weaning and castration ages on metabolites of Hanwoo steers

From: Effects of weaning and castration ages on growth performance, blood metabolites, and carcass characteristics in Hanwoo steers

Item Treatmenta SE P-value
W80C90 W80C180 W130C90 W130C180
  Growing period (3–12 months of age)   
Albumin (g/dl) 3.43 3.55 3.63 3.53 0.142 0.225
BUN (mg/dl) 13.23 12.98 13.26 12.46 1.248 0.353
Total protein (g/dl) 6.24 6.54 6.69 6.45 0.337 0.321
Glucose (mg/dl) 62.83 62.83 65.58 68.75 11.255 0.311
Creatinine (mg/dl) 0.98 1.00 1.07 1.05 0.124 0.235
Cholesterol (mg/dl) 126.08 113.83 128.67 115.58 24.226 0.105
Total glyceride (mg/dl) 24.52 24.33 24.42 22.65 2.561 0.325
NEFA (μEq/L) 107.92 149.42 141.92 135.83 27.331 0.289
Calcium (mg/dl) 9.59 9.66 9.23 9.14 0.318 0.335
Phosphorus (mg/dl) 8.60 8.77 8.73 8.57 0.614 0.312
GOT (IU/L) 68.50 62.92 60.42 62.33 7.203 0.114
GPT (IU/L) 25.77 24.56 22.82 24.15 5.365 0.235
GGT (mg/dl) 22.67 19.08 19.75 19.92 3.217 0.164
  Early fattening period (13–22 months of age)   
Albumin (g/dl) 3.98 4.38 4.21 3.98 0.149 0.055
BUN (mg/dl) 12.70 11.45 13.00 10.93 0.388 0.160
Total protein (g/dl) 8.21 8.50 8.42 8.27 0.222 0.748
Glucose (mg/dl) 60.13 63.29 59.92 66.22 2.120 0.386
Creatinine (mg/dl) 1.16 1.36 1.33 1.27 0.073 0.268
Cholesterol (mg/dl) 171.58 132.42 147.85 157.63 12.299 0.109
Total glyceride (mg/dl) 17.08 18.75 16.50 19.24 1.358 0.506
NEFA (μEq/L) 244.42 291.25 331.46 319.39 19.539 0.162
Calcium (mg/dl) 9.30 9.50 9.30 8.46 0.182 0.179
Phosphorus (mg/dl) 7.87 7.52 7.90 8.28 0.950 0.404
GOT (IU/L) 63.13 56.29 70.00 52.67 5.813 0.337
GPT (IU/L) 27.55 26.92 28.10 34.42 3.526 0.876
GGT (mg/dl) 22.25 19.79 27.39 24.84 2.407 0.135
  Late fattening period (23–31 months of age)   
Albumin (g/dl) 4.26 4.45 4.40 4.36 0.242 0.343
BUN (mg/dl) 16.74 17.40 17.65 16.76 3.053 0.966
Total protein (g/dl) 8.94 9.00 8.98 9.01 0.501 0.783
Glucose (mg/dl) 92.50 92.88 95.83 104.38 6.462 0.106
Creatinine (mg/dl) 1.56 1.54 1.53 1.54 0.176 0.843
Cholesterol (mg/dl) 179.88 164.38 178.17 189.88 32.915 0.869
Total glyceride (mg/dl) 39.63 34.00 47.50 38.00 10.654 0.086
NEFA (μEq/L) 132.50 102.38 127.83 114.25 62.398 0.323
Calcium (mg/dl) 10.08 8.91 9.85 9.95 1.633 0.365
Phosphorus (mg/dl) 8.08 7.80 8.17 7.95 0.668 0.321
GOT (IU/L) 97.00 97.25 97.33 84.00 6.356 0.497
GPT (IU/L) 20.25 18.13 19.17 19.75 3.827 0.542
GGT (mg/dl) 80.88 57.50 59.00 40.13 4.372 0.069
  1. BUN blood urea nitrogen, NEFA non-esterified fatty acid, GOT glutamic oxaloacetic transaminase, GPT glutamic-pyruvic transaminase, GGT, gamma-glutamyl transpeptidase
  2. aW80C90: weaning at 80 days of age and castration at 90 days of age; W80C180: weaning at 80 days of age and castration at 180 days of age; W130C90: weaning at 130 days of age and castration at 90 days of age; W130C180: weaning at 130 days of age and castration at 180 days of age