Ohashi H, Takami T, Yugari Y
Physiol Behav. 1985 Oct;35(4):631-5. doi: 10.1016/0031-9384(85)90153-2.
A continuous infusion technique for rats is described which is a significant improvement upon existing procedures with regard to the degree of physiological and psychological stress it provokes. The system was assembled with a head attachment, a practical swivel and a special metabolic cage, permitting long-term tube feeding of unrestrained rats.