Effects of the rearing environment complexity on laying hens’ spatial cognition: A holeboard test approach
نویسندگان
چکیده
The rearing environment of layer chicks can differ greatly in degree complexity. With the industry moving towards cage-free housing systems, greater demands are placed on birds’ cognitive abilities order for them to find resources such as food, water and nest-boxes. Because early environmental complexity influence cognition, we aimed at increasing our knowledge how two different environments affect hens. We habituated 64 hens a spatial holeboard test, half which were reared cages other an aviary. Out these hens, 14 cage- aviary-reared White Leghorn tested twice day every workday test from 32 40 weeks age. consisted 4 consecutive phases, namely uncued, cued, over-training reversal during had baits subset cups arena. All identical, so rely cues always hidden same cups. During cued phase, added baited give additional information new study flexibility. results show birds able successfully complete task. Aviary-reared higher reference memory score than cage-reared first block phase (F1,26 = 4.21, p < 0.05). Cage-reared also significantly latency bait phases 5.26, 0.03; F1,26 6.32, 0.02; 6.29, 0.02). was observed transition between (uncued-cued: 6.19, cued-over-training: 5.87, 0.03). No significant treatment effects found phase. In conclusion, slower seemed be more sensitive changes environment, shown by differences phases. might therefore better adjusting complex laying environments.
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ژورنال
عنوان ژورنال: Applied Animal Behaviour Science
سال: 2023
ISSN: ['0168-1591', '1872-9045']
DOI: https://doi.org/10.1016/j.applanim.2023.105878