Research paperPerformance of domestic hens under progressive-ratio schedules of food delivery
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The demand of laying hens for feathers and wood shavings
2006, Applied Animal Behaviour ScienceWorking for food under conditions of varying motivation in broilers
2004, Animal BehaviourCitation Excerpt :Robinson et al. (1995) and Foster et al. (1997) continued a session until 10 min elapsed without a response, whereas Savory et al. (1993) had sessions of 16 min. We chose another criterion because we wanted to test all the birds in 1 day, in contrast to Robinson et al. (1995) and Foster et al. (1997). In addition, we wanted the birds to achieve the maximum price within a session.
Behavioural Priorities of Laying Hens
2003, Avian and Poultry Biology ReviewsThe use of operant technology to measure behavioral priorities in captive animals
2001, Behavior Research Methods, Instruments, and ComputersThe effects of differing response types and price manipulations on demand measures
1999, Journal of the Experimental Analysis of Behavior
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