Individual differences in docility in Limousin cattle1

Docility tests were performed over 3 yr on 906 Limousin heifers sired by 34 males. The heifers were tested individually when they were 10 to 11 mo old in a pen with a handler who had 2 min to lead the animal to a corner, keep it there for 30 consecutive seconds, and then to stroke it. Behaviours of the animals were recorded and scores calculated. The first score (docility score) was a continuous variable combining the greatest possible...