Effects of Age on Avoidance Learning in Pigs

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Abstract
Pigs from two breeds were tested on an avoidance learning task at ages 21, 40, 80 and 150 days. Duroc pigs were better avoidance learners than Hampshire pigs at all ages tested. The achieved level of learned responses decreased .16% per day during the test. Hence, younger pigs reached higher levels of avoidance learning performance than their older full-sibs. The heavier pigs within the litters were the better learners. Weight accounted for 7.2% and 4.6% of the variance within litters for 80- and 150-day learning scores, respectively. Copyright © 1969. American Society of Animal Science. Copyright 1969 by American Society of Animal Science

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