Pecking at other birds and at string enrichment devices by adult laying hens

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Feather pecking in adult laying hens: can it be associated with pecking at inanimate objects?

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The effects of four types of enrichment on feather-pecking behaviour in laying hens housed in barren environments

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The effect of keel fractures on egg production, feed and water consumption in individual laying hens

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Comparison of amino acid digestibility of feed ingredients in broilers, laying hens and caecectomised roosters

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