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. 2022 Apr 15;17(4):e0267019. doi: 10.1371/journal.pone.0267019

Table 2. Descriptive statistics of 15 continuous variables from 37 chicken broiler flocks surveyed in a study on the occurrence of breast meat myopathies in Ontario, Canada (2019–2020).

Variable Minimum Q1 Median Q3 Maximum
Continuous variables obtained from questionnaire to processing plants
Flock demographics variables
    Age (d) 36 39 40 42 43
    Average live weight at slaughter (g) 1,940 2,260 2,397 2,490 2,630
Flock health variables
    Mortality rate during grow-out (%) 1.25 2 2.33 3 5.8
Transportation from farms to processing plant factors
    Birds per crate (b/c) 8 9 9 10.5 12
    Loading duration (min) 40 70 90 105 150
    Dead-on arrival (%) 0 0.03 0.06 0.09 0.16
    Duration without feed (min) 300 616 705 792 1005
    Duration without water (min) 113 202 318 371 470
    Truck travel time (min) 20 57 120 199 798
Processing plant variables
    Hold time on lairage at plant (min) 10 98 130 174 269
    Condemnation (%) 0.01 0.34 0.75 1.24 2.81
Continuous variables obtained from Environment Canada weather station
Environmental variables
    Precipitation during grow-out (mm) 0 54 74.3 106 164.6
    Temperature during grow-out (°C) -9.8 -1.2 10.5 15.8 22.7
    Precipitation during transport (mm) 0 0 0.4 2.1 20.2
    Temperature during transport (°C) -9.8 1 9.4 19.1 23.7