There was no difference between the three strains when comparing the one hour of baseline behavior (Table. 2).
Table 2. Baseline behavior
Only one behavior showed a significant difference between the three strains (Table. 3). The behavior that showed a significant difference between the strains was crowing.
Table 3. Stress-response
The fowls were stressed by the restraint (net) which can be seen in the Table. 2 for the time interaction. with seven behaviors showing a significant difference over time.
Crowing was the only behavior of the 16 behaviors recorded that showed a significance difference between the groups. With the high- and intermediate strain having significant changes in number of crowings performed over time.
Other studies have found differences between domesticated fowl and non-domesticated ones, in both stress response and activity level. This was not seen in this study. There are also some possible sources for errors such as the sample size being to small. But also that too few generations of selective breeding for fear of humans had passed to see any of the differences that have been reported in other studies.
In conclusion, selecting for fear of humans in Red Junglefowl does not seem to affect stress-response in a major way.
Responsible for this page: Agneta Johansson
Last updated: 06/13/15