Table 1.
Basic statistics (LS Means ± Standard Error) for all traits analysed
Trait1 | N | Mean ± SD | Min | Max | CV (%) | LS Means ± SE | |
---|---|---|---|---|---|---|---|
Males | Females | ||||||
Growth traits and feed intake | |||||||
BWi | 1029 | 22.4 ± 5.64 | 7.74 | 40.15 | 25.1 | 23.4 ± 0.17a | 21.01 ± 0.18b |
BWf | 993 | 31.9 ± 8.26 | 10.04 | 56.61 | 25.9 | 33.7 ± 0.26a | 29.4 ± 0.27b |
TGCLOSS | 997 | − 0.036 ± 0.01 | − 0.068 | 0.00 | 24.9 | − 0.036 ± 0.001a | − 0.036 ± 0.001a |
TGCCOMP | 995 | 0.282 ± 0.049 | 0.024 | 0.426 | 17.5 | 0.296 ± 0.002a | 0.265 ± 0.002b |
BWG | 981 | 9.33 ± 3.14 | 0.76 | 18.3 | 33.7 | 10.3 ± 0.11a | 8.35 ± 0.12b |
TGCFI | 993 | 0.16 ± 0.04 | 0.03 | 0.28 | 22.5 | 0.17 ± 0.001a | 0.15 ± 0.002b |
FI | 949 | 8.35 ± 2.42 | 1.80 | 15.6 | 29.0 | 9.05 ± 0.09a | 8.17 ± 0.09b |
Feed efficiency traits | |||||||
FCR | 953 | 0.94 ± 0.21 | 0.47 | 1.55 | 22.1 | 0.91 ± 0.01a | 1.01 ± 0.01b |
RFI | 935 | 0 ± 1.53 | −4.41 | 4.40 | NR | −0.40 ± 0.06a | 0.09 ± 0.07b |
1BWi and BWf: BW at the beginning and at the end of the FI period (in g), respectively; TGCLOSS Loss of weight during the fasting period estimated as thermal growth coefficient during the fasting period, TGCCOMP Gain of weight during the feeding period estimated as the thermal growth coefficient during the refeeding period, BWG Body weight gain during the FI period (g), TGCFI Thermal growth coefficient during the FI period, FI Feed intake (g), FCR Feed conversion ratio (g.g− 1), RFI Residual feed intake (g)
NR CV are not relevant in these cases
a-bLS Means within row with different superscript are significantly different (P-value < 0.05)