Fig. 2

Scatter plots of data for ADG and VL from a 0 to 21 and b 0 to 42 dpi. ADG and VL from 0 to 21 and 0 to 42 dpi (n = 1320 and 1001, respectively) were distributed into one of four quadrants according to their growth and VL after infection with PRRS virus (n = 330 and 250 in each quadrant for 0 to 21 and 0 to 42 dpi, respectively). The quadrants (ADG⁺VL⁻ blue, ADG⁺VL⁺ green, ADG⁻VL⁻ orange, and ADG⁻VL⁺ red) refer to high growth rate and high resistance (low VL), high growth rate and low resistance (high VL), low growth rate and high resistance and low growth rate and high low, respectively. Quadrants were centered at mean VL and at mean ADG