Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 536193
Title Elaboration of a Judgment Bias Test suitable for dairy heifers
Author(s) Kremer, L.A.M.; Webb, L.E.; Reenen, C.G. van; Werf, J.T.N. van der; Boer, I.J.M. de
Event WIAS Science Day 2018, Wageningen, 2018-02-05/2018-02-05
Department(s) Animal Health & Welfare
Animal Production Systems
Publication type Poster (scientific)
Publication year 2018
Abstract Animal welfare integrates animal affect, i.e. the positive and negative states experienced by an animal. Scientists recognize Judgment Bias Test (JBT) as one of the best existing methods to assess animal affect. JBT investigates the link between affect and cognition. Individuals in a positive affective state are more optimistic than individuals in a negative affective state: they assess an ambiguous situation more positively. In practice, individuals are trained to associate one cue to a reward and another to a punisher. Their response to an ambiguous cue is then tested. Animals are assumed to be in a positive affective state if they associate the ambiguous cue to the reward instead of the punisher (and vice versa). JBT has been applied to many species, but never to adult cattle. A JBT for dairy cattle will be created to lay the foundations for the elaboration of an on-farm tool to assess cattle welfare. The validity of JBT relies on the animals’ motivation, the sensitivity of the test and the preserved ambiguity of the cue over testing sessions. A feed which maintains cows’ motivation for the JBT will be identified through preference and run-way tests. The sensitivity of three JBTs associated with different punishers inducing frustration, fear or pain will be compared. The most sensitive test.
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