INVESTIGADORES
MARIN Raul Hector
congresos y reuniones científicas
Título:
Temporal dynamics of habituation to a novel environment in female Japanese quails with divergent coping styles.
Autor/es:
KEMBRO J. M.; MUNOZ, A.; PERILLO, M. A.; MARIN R. H.
Lugar:
Uppsala
Reunión:
Congreso; IX European Symposium of Poultry Welfare.; 2013
Institución organizadora:
World Poultry Science Association
Resumen:
The work evaluates the
organization and complexity of quail temporal pattern of locomotion in diverse
welfare related experimental situations using Detrended Fluctuation Analysis
(DFA). DFA provides information on the organization and complexity of temporal
patterns of behavior, and has been proposed as a
noninvasive tool to evaluate stress-related responses in poultry. The aim was
to assess the usefulness of this mathematical tool in the context of animal
welfare. Firstly, DFA showed that quail temporal pattern of locomotion in their
home box or in a novel environment (stressful situation) has a fractal
organization with long-range autocorrelations (i.e. ongoing behavior is
influenced by what has occurred in the past). Secondly, an increase in
environmental complexity induced by scattering feed on the home box ground was
associated with an increase in the complexity of the locomotor pattern. This
pattern change occurred without affecting the total time spent ambulating,
suggesting that DFA can provide additional information beyond that obtained
with traditional behavioral analysis. Thirdly, in an open-field test, no
differences in organization and complexity of the active period of the locomotor
time series (i.e., after regaining locomotor activity) were observed between
quail lines selected for a low- rather than a high-stress plasma corticosterone
stress response, nor in quail treated with anxiolytic drugs (Diazepam or
Propofol). These results suggest that during open-field active period, when
fear responses are likely less strong and other motivations are the ambulation
driving forces, birds with different initial emotional states have a similar
ambulatory organization. Fourthly, DFA detected changes during a 3 days
habituation period to a novel home environment, shifting the temporal dynamic
towards a less random and more predictable pattern. In all, results suggest
that the complexity of temporal pattern of locomotion depends on the experimental
situation. Changes in the environment or habituation to a novel environment can
alter the patterns, however variations in the birds emotional state does not
alter the pattern once this activity is regained. DFA can be considered a
useful tool to assess behavioral temporal patterns in different welfare scenarios,
detecting changes that complement results obtained with traditional behavioral
analysis tools.