Frustration of an expectation of food in an operant situation increases the number of laying-calls in the laying hen.

P. Zimmerman, P. Koene

Research output: Chapter in Book/Report/Conference proceedingAbstract

Original languageEnglish
Title of host publicationProc. 30th Int. Congress Int. Soc. Appl. Ethology, I.J.H. Duncan et al. (eds.), Guelph, Canada (1996) 1 p
Publication statusPublished - 1996

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