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A critical review of fear tests used on cattle, pigs, sheep, poultry and horses
Fear is arguably the most commonly investigated emotion in domestic animals. In the current review we attempt to establish the level of repeatability and validity found for fear tests used on cattle,Expand
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Open-field and tonic immobility responses in domestic chicks of two genetic lines differing in their propensity to feather peck.
1. The open-field and tonic immobility reactions of female domestic chicks of 2 genetic lines which showed high (HP) or low (LP) levels of feather pecking were compared. 2. Chicks of the LP lineExpand
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Modification of fear in domestic chicks, Gallus gallus domesticus, via regular handling and early environmental enrichment
Abstract Although its adaptive properties are recognized, fear can harm the welfare and performance of intensively housed poultry. Its alleviation in individually caged domestic chicks via theExpand
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Tonic immobility and heterophil/lymphocyte responses of the domestic fowl to corticosterone infusion
The tonic immobility (TI) fear reactions, plasma corticosterone concentrations and heterophil/lymphocyte (H/L) ratios of adults laying hens were measured before and at intervals of 4 and 11 daysExpand
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Olfaction in the Domestic Fowl: A Critical Review
It has been known for some time that many species of birds, including domestic fowl Gallus domesticus, have an olfactory sense. However, the functional significance of avian olfaction is less clear.Expand
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Restraint, fear, and distress in Japanese quail genetically selected for long or short tonic immobility reactions
Japanese quail genetically selected for long (LTI) rather than short (STI) tonic immobility reactions showed more pronounced overt fear-responses in a number of putatively frightening situations.Expand
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Assessment of fear in adult laying hens: correlational analysis of methods and measures.
  • R. Jones
  • Biology, Medicine
  • British poultry science
  • 1 June 1987
The fear responses of adult laying hens of two lines, flighty and docile, were assessed in each of three commonly employed and widely differing test situations. These were the pen with cone, novelExpand
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Developmental instability in japanese quail genetically selected for contrasting adrenocortical responsiveness.
Differences in developmental instability were assessed with Japanese quail of two lines that had been genetically selected over several generations for reduced (low stress, LS) or exaggerated (highExpand
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Effects of repeated restraint in Japanese quail genetically selected for contrasting adrenocortical responses
Behavioral and adrenocortical responses to repeated mechanical restraint were compared in 28-day-old to 31-day-old male Japanese quail from two genetic lines divergently selected for reduced (lowExpand
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Age-related changes in fear, sociality and pecking behaviours in two strains of laying hen
1. Two lines of commercial hybrid layers (Tetra and ISA Brown) were reared from hatch to 30 weeks of age in groups of 8. The objectives of the experiment were to evaluate the significance of theExpand
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