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Table 1 Descriptive statistics of the data

From: Genetic parameters for body weight and different definitions of residual feed intake in broiler chickens

Trait

N

Mean (g)

SD

Min

Max

\({\text{BW}}_{{{\text{m}}\left( {\text{t}} \right)}}\)

17,270

2732.3

268.6

1776.0

3712.0

\({\text{BW}}_{{{\text{f}}\left( {\text{t}} \right)}}\)

18,461

2303.3

221.9

1463.0

3045.0

\({\text{BW}}_{{{\text{m}}\left( {{\text{t}} - 6} \right)}}\)

10,117

2182.8

213.3

1319.0

2890.0

\({\text{BW}}_{{{\text{f}}\left( {{\text{t}} - 6} \right)}}\)

10,801

1882.4

180.2

1077.0

2449.0

\({\text{FI}}_{{{\text{m}}\left( {\text{t}} \right)}}\)

5065

2851.7

215.6

1919.0

3712.0

\({\text{FI}}_{{{\text{f}}\left( {\text{t}} \right)}}\)

10,334

2355.1

185.2

1700.0

3045.0

\({\text{FI}}_{{{\text{m}}\left( {{\text{t}} - 6} \right)}}\)

2301

2311.3

163.1

1493.0

2890.0

\({\text{FI}}_{{{\text{f}}\left( {{\text{t}} - 6} \right)}}\)

4581

1954.3

141.3

1421.0

2449.0

\({\text{Gain}}_{{{\text{m}}\left( {\text{t}} \right)}}\)

5056

619.2

146.6

206.0

1161.0

\({\text{Gain}}_{{{\text{f}}\left( {\text{t}} \right)}}\)

10,239

479.3

102.6

182.0

865.0

\({\text{Gain}}_{{{\text{m}}\left( {{\text{t}} - 6} \right)}}\)

2299

636.4

115.4

292.0

960.0

\({\text{Gain}}_{{{\text{f}}\left( {{\text{t}} - 6} \right)}}\)

4533

469.2

91.3

211.0

725.0

  1. \(BW_{m\left( t \right)}\) body weight of males at \({\text{t}}\) days of age, \(BW_{f\left( t \right)}\) body weight of females at \({\text{t}}\) days of age, \(BW_{{m\left( {t - 6} \right)}}\) body weight of males at \({\text{t}} - 6\) days of age, \(BW_{{f\left( {t - 6} \right)}}\) body weight of females at \({\text{t}} - 6\) days of age, \(FI_{m\left( t \right)}\) feed intake of males at \({\text{t}}\) days of age, \(FI_{f\left( t \right)}\) feed intake of females at \({\text{t}}\) days of age, \(FI_{{m\left( {t - 6} \right)}}\) feed intake of males at \({\text{t}} - 6\) days of age, \(FI_{{f\left( {t - 6} \right)}}\) feed intake of females at \({\text{t}} - 6\) days of age, \(Gain_{m\left( t \right)}\) body weight gain of males at \({\text{t}}\) days of age, \(Gain_{f\left( t \right)}\) body weight gain of females at \({\text{t}}\) days of age, \(Gain_{{m\left( {t - 6} \right)}}\) body weight gain of males at \({\text{t}} - 6\) days of age, \(Gain_{{f\left( {t - 6} \right)}}\) body weight gain of females at \({\text{t}} - 6\) days of age, RFI residual feed intake