Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"tonic immobility"”.
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The effects of social experience and inductive procedure on tonic immobility in domestic chicks
Previous studies on tonic immobility in fowl have used a variety of inductive procedures and rearing conditions. The present study sought to parametrically evaluate the effects of three common methods of induction: ventral, dorsal and lateral placements within the context of groups of varying …
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Food intake regulation and tonic immobility in the domestic fowl as medicated by tyrosine and tryptophan
… administered tyrosine and tryptophan on tonic immobility (TI) were also tested. Duration and susceptibility of TI were unaffected by tyrosine and tryptophan, suggesting that these amino acids acted upon mechanisms specifically involved in the regulation of food intake.
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Behavior-genetic analyses in Japanese quail chicks
… of some of the biological factors affecting tonic immobility in young Japanese quail. Both duration and incidence of tonic immobility were measured on each bird at six days and again at 12 days of age. A significant line effect was found at both ages, and rankings of these lines for duration …
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Differences in sympathetic nervous response due to gender
… The freeze response, otherwise referred to as tonic immobility, is being explored here for its survival value in the specific context of gender. It is our belief that in situations of interpersonal aggression, females may be more suited to survive by utilizing a tonic response when they are …
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Chicken or fish? Do environmental complexity and stocking density impact affective states of broiler chickens and rainbow trout?
… was used to determine level of anxiety and a tonic immobility test was used to determine fear in order to investigate affective state of broilers housed in the same conditions as described for Chapter 3. Broilers housed in complex environments were less anxious during the attention bias test …
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Happy Chickens: Novel Physiological and Behavioral Measures of Cumulative Experience in Broilers and Laying Hens
… telomere length. In chapter 5, attention bias, tonic immobility, plasma and secretory IgA concentrations, and feather corticosterone concentrations were determined in laying hens raised in conventional cages or enriched floor pens. Birds in enriched floor pens showed increased attention bias, …
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The Effect of Jungle Light Spectrum on the Fearfulness of Commercial Broiler Chickens
… of the inversion test, isolation test and tonic immobility indicated birds raised under a jungle light spectrum were less fearful than birds raised under LED light.