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Table 3 Effects of weaning age on growth performance of Hanwoo steers

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

Item Weaning agea SE Pr > |t|
W80 W130
  Growing period (3–12 months of age)   
Initial body weight (kg) 110.3 ± 13.3 111.5 ± 14.3 3.816 0.758
Final body weight (kg) 316.1 ± 30.3 309.6 ± 26.1 8.807 0.472
Average daily gain (kg) 0.75 ± 0.08 0.72 ± 0.06 0.023 0.237
Concentrate (DM, kg) 3.58 ± 0.58 3.58 ± 0.58
Rice straw (DM, kg) 1.78 ± 0.25 1.78 ± 0.25
Dry matter intake (kg) 5.36 ± 0.57 5.36 ± 0.57
Feed conversion ratio 7.15 ± 0.63 7.44 ± 0.53 0.180 0.269
  Early fattening period (13–22 months of age)   
Initial body weight (kg) 316.1 ± 30.3 309.6 ± 26.1 8.807 0.472
Final body weight (kg) 577.1 ± 49.6 577.3 ± 53.9 14.282 0.857
Average daily gain (kg) 0.86 ± 0.09 0.89 ± 0.13 0.032 0.248
Concentrate (DM, kg) 5.82 ± 1.11 5.82 ± 1.11
Rice straw (DM, kg) 2.39 ± 0.21 2.39 ± 0.21
Dry matter intake (kg) 8.21 ± 0.45 8.21 ± 0.45
Feed conversion ratio 9.88 ± 1.15 9.56 ± 1.47 0.355 0.378
  Late fattening period (23–31 months of age)   
Initial body weight (kg) 577.10 ± 50.63 577.27 ± 55.07 52.900 0.991
Final body weight (kg) 769.77 ± 73.13 773.94 ± 76.28 74.721 0.848
Average daily gain (kg) 0.67 ± 0.12 0.69 ± 0.14 0.128 0.707
Concentrate (DM, kg) 8.05 ± 0.71 8.13 ± 0.62
Rice straw (DM, kg) 0.96 ± 0.33 0.96 ± 0.33
Dry matter intake (kg) 9.01 ± 0.73 9.10 ± 0.62
Feed conversion ratio 12.87 ± 3.09 11.99 ± 1.95 2.586 0.454
  Entire period (3–31 months of age)   
Initial body weight (kg) 110.3 ± 13.3 111.5 ± 14.3 14.100 0.772
Final body weight (kg) 769.8 ± 71.6 773.9 ± 74.7 74.721 0.848
Average daily gain (kg) 0.77 ± 0.07 0.77 ± 0.08 0.079 0.881
Concentrate (DM, kg) 5.75 ± 2.33 5.75 ± 2.41
Rice straw (DM, kg) 1.73 ± 0.65 1.69 ± 0.67
Dry matter intake (kg) 7.47 ± 2.17 7.45 ± 2.31
Feed conversion ratio 9.77 ± 3.56 9.28 ± 3.14 3.358 0.601
  1. Means ± standard deviation
  2. aW80: weaning at 80 days of age at weaning; W130: weaning at 130 days of age