English to French Other Zoology cow breeding

Behavioural, endocrine and immunological measures made at weaning or feedlot entry were examined for associations amongst them and with feedlot performance with a view to identifying predictors of the suitability of cattle for feedlot finishing. The 24 animals used in this experiment were chosen to represent the extremes of temperament amongst 209 beef steer calves that were weaned at 7�9 months of age. From a subgroup of 50 animals that were paddock-weaned without handling or supplementary feeding, the 12 animals with the worst temperament were selected on the basis of flight time and crush behaviour assessment. From a matched subgroup of 100 animals that were weaned in yards and hand fed for 10 days, the 12 animals with the best temperament were selected on the basis of flight time, ///crush score/// and a novel behavioural test performed as follows. Each morning, fresh hay and a small amount of grain were offered in an adjacent pen and calves were scored on their willingness to walk past an observer standing by the gateway between the 2 pens.

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