Developing and validating measures of temperament in livestock

Developing and validating measures of temperament in livestock

In addition, the impact of parental experiences is transmitted not only through shared environment but also through epigenetic mechanisms [2].Although temperament would seem to be a brain construction, it also reflects adrenal, thyroid, liver, muscle and peripheral nervous system metabolism [2–4].

Temperament is also an important component of bovine social behavior which affects animal welfare, animal-animal interactions and the animal-herdsman relationship.

As expected, the broad and subjective definition of temperament leads to difficulties in the robust assessment of this trait [3,10].

Many different methods to evaluate different temperament phenotypes have been proposed [10].

More excitable animals react with increased aggression and/or fear to human contact or handling.

Aggressive animals present less weight gain, reduced reproductive efficiency, lower milk production, inferior meat quality and higher disease susceptibility [2].

developing and validating measures of temperament in livestock-43developing and validating measures of temperament in livestock-42developing and validating measures of temperament in livestock-83

QTLs for reactivity were identified on chromosomes BTA1, BTA5, BTA14, and BTA25.

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