Essays about: "tonic immobility"

Showing result 1 - 5 of 13 essays containing the words tonic immobility.

  1. 1. Anpassningsbara kycklingar : Den tidiga utvecklingens betydelse för att minska stress hos värphöns

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Veronika Winnberg; [2021]
    Keywords : värphöns; stress; anpassning; tonic immobility; H L ratio;

    Abstract : Syftet med mitt arbete är att undersöka hur kycklingars tidiga uppväxtmiljö påverkar deras förmåga att anpassa sig och hantera stress. Djur som lever i en berikad miljö får större möjlighet att lära sig hantera fler utmaningar vilket kan leda till att de blir bättre på att hantera förändringar i miljön senare i livet. READ MORE

  3. 2. The effect of brooders on the synchronization of behaviour in broilers

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Elin Yngve; [2019]
    Keywords : broilers; sleep; resting; synchronization; brooders;

    Abstract : For the first weeks of their life chickens in nature sleep and rest on the ground under the brooding hen. However, broilers in conventional production are kept in very barren environment with high stocking densities which does not encourage sleep and rest. READ MORE

  4. 3. Heart and ventilation rate changes during tonic immobility in Ornate Tinamou (Nothoprocta ornata) and High Andean chicken (Gallus gallus) compared to Chilean Tinamou (Nothoprocta perdicaria)

    University essay from Linköpings universitet/Biologi; Linköpings universitet/Tekniska fakulteten

    Author : Cecilia Alexis Greder; [2015]
    Keywords : Tonic immobility; Heart rate; Ventilation rate; Nothoprocta ornata; Nothoprocta perdicaria; Tinamou; Gallus gallus; Chicken;

    Abstract : Animals can show different responses to fear for example by playing dead when there is no possibility to escape. This response is called tonic immobility (TI) and is a well-established test of fear to evaluate fearfulness. Long durations of TI are generally considered as high levels of fearfulness. READ MORE

  5. 4. Marker generation for Fine Mapping a QTL in the chicken

    University essay from Linköpings universitet/Biologi; Linköpings universitet/Tekniska högskolan

    Author : Ahlgren Elisabeth; [2014]
    Keywords : Behavior; Red Junglefowl; Single Nucleotide Polymorphism marker; Tonic immobility; White Leghorn; QTL analysis;

    Abstract : The purpose of this study was to design and test five SNP markers in an inbred chicken cross between Red Junglefowl and domestic White Leghorn of the 8th generation. The markers lie in a region affecting the tonic immobility behaviour which differs significantly between the two species. READ MORE

  6. 5. Consistency and heritability of personality in red junglefowl (Gallus gallus) : Applying scientific research methods when teaching biology

    University essay from Biologi

    Author : Josefin Kvarnström; [2013]
    Keywords : Boldness; Chicken; Exploration; Fearfulness; Scientific approach and education; Risk-taking;

    Abstract : Observations of consistency in behavioural responses in animals suggest that animals have personality, a term previously mainly used when describing humans. The expression of differences in personality, similar to expression of variation in behaviour, is in principle dependent on genetic background, environmental factors and experiences. READ MORE