INHIBITION OF FOOD INTAKE BY A HUMORAL FACTOR

Reduced intake of milk by fasted rats 50% below normal after their blood had been transfused with that of satiated rats. Ss were 108 male albino Sprague-Dawley rats. Bar pressing continuously reinforced by dry-food pellets was reduced to approximately 60% of normal following similar transfusion. Milk intake and bar pressing was not reduced when transfusion was between a pair of fasted rats. Bar pressing reinforced on a variable interval schedule was unaffected by transfusion between fasted-trained and satiated rats. In no case was food intake by satiated rats elevated following transfusion with fasted rats. (23 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1969 American Psychological Association.