Improving the Adaptability of Animals by Selection - Genetics and the Behavior of Domestic Animals - page 293

60

40

20

0

Generation

FIGURE 8.2 Distance run on the treadmill in lines of Japanese quail selected for high or low

levels of social reinstatement behavior over 20 generations ( & ) HSR, ( e ) CSR, ( x ) LSR.

0.6 0.6

0.5 0.5

0.4 0.4

0.3 0.3

F0

F20-HSR

0.2 0.2

0.1 0.1

TR (m) TR (m)

0 0

0.6

0.5

0.4

0.3

F20-LSR

0.2

0.1

TR (m)

0

FIGURE 8.3 Distribution of distance run on the treadmill in lines of Japanese quail selected
for high or low level of social reinstatement behavior. The graph shows the distributions for the
F0 and F20 generations.

reinstatement (HSR) and the low social reinstatement (LSR) birds had
become distinct genetic lines.
In the SR lines, the time spent in the far zone of the runway was identical up
to the eighth generation of selection. Thereafter, the lines started to diverge with
low SR birds showing the longest times and high SR birds the shortest times.