The effect of reward duration on demand functions for rest in dairy heifers and lying requirements as measured by demand functions

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Using preference, motivation and aversion tests to ask scientific questions about animals’ feelings (2006, methodology): “When reward size is controlled, different reward sizes can produce different demand curves (Jensen et al., 2004b,c), even for resources such as food (Hursh et al., 1988) where a small reward size does not interfere with consummation.”
Resting pattern and social interactions in goats—The impact of size and organisation of lying space (2007, background): “According to Jensen et al. (2005), heifers show an inelastic demand to rest for at least 50% of a 24-”
Invited review: Effects of heat stress on dairy cattle welfare. (2017, background): “Several studies examining the lying time of cows in freestalls report a range of 11 to 14 h (Cook et al., 2004a; Jensen et al., 2005; Ito et al., 2010) under thermo-neutral conditions, with a 30% reduction when ambient temperatures increase (Cook et al., 2007).”