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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