Zook J M, Adams D B
J Comp Physiol Psychol. 1975 Jan;88(1):418-23. doi: 10.1037/h0076225.
Competitive fighting was obtained in pairs of like-sexed laboratory rats by placing a single piece of food into the food hopper following 48 hr. of food deprivation. The fighting was characterized by offensive sideways posture, full aggressive posture, and bite and kick attack. Tests were conducted at 110-120 days of age on pairs of animals that had been housed together since weaning. Fighting was more frequent in pairs consisting of nonlittermates than in pairs of littermates, and it was equally frequent in male and female pairings. Probability of fighting was enhanced by prior experience with food deprivation, and attack was most often initiated by the heavier animal of the pair.
在48小时食物剥夺后，将一片食物放入食物漏斗中，使同性别的实验大鼠成对进行竞争性打斗。打斗的特征是攻击性的侧身姿势、完全的攻击姿势以及撕咬和踢打攻击。对自断奶起就饲养在一起的动物对在110 - 120日龄时进行测试。非同窝出生的大鼠对之间的打斗比同窝出生的大鼠对更频繁，并且在雄性配对和雌性配对中的打斗频率相同。先前的食物剥夺经历会增加打斗的可能性，而且攻击行为最常由配对中较重的动物发起。
