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Lagos, L.; Blanco, P. |
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Title |
Testing the use of dogs to prevent wolf attackson free ranging ponies in Iberia? |
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2021 |
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Carnivore Damage Prevention News |
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CDPnews |
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23 |
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20-27 |
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Equine Behaviour @ team @ |
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6679 |
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Solmsen, E. - H.; Bathen, M.; Grüntjens, T.; Hempel, E.; Klose, M.; Krüger, K.; Martin, H.; Meyer, A.; Schütte, P.; Vogel, L.; Wiezorek, S.; Wittor, B. |
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Title |
Protecting horses against wolves in Germany. |
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Journal Article |
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Year |
2021 |
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Carnivore Damage Prevention News |
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CDPNews |
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23 |
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Equine Behaviour @ team @ |
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6682 |
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Solmsen, E.-H.; Bathen, M.; Grüntjens, T.; Hempel, E.; Klose, M.; Krüger, K.; Martin, H.; Meyer, A.; Schütte, P.; Vogel, L.; Wiezorek, S.; Wittor, B. |
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Title |
Protecting horses against wolves in Germany |
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Journal Article |
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Year |
2021 |
Publication |
Carnivore Damage Prevention News |
Abbreviated Journal |
CPDnews |
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23 |
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12-19 |
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Equine Behaviour @ team @ |
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6661 |
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Stomp, M.; d'Ingeo, S.; Henry, S.; Cousillas, H.; Hausberger, M. |
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Title |
Brain activity reflects (chronic) welfare state: Evidence from individual electroencephalography profiles in an animal model |
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Journal Article |
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2021 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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236 |
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105271 |
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Laterality; Electroencephalography; Theta wave; Welfare; Horses |
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Assessing the animal welfare state is a challenge given the subjective individual cognitive and emotional processing involved. Electroencephalography (EEG) spectrum analysis has proved an ecologically valid recording situation to assess the link between brain processes and affective or cognitive states in humans: a higher slow wave/fast wave ratio has been associated with a positive internal state. In particular, a high production of theta power (3-8 Hz) has been related to positive emotions. On the other hand, it has been hypothesized that a left hemisphere (LH) dominance may be associated with a better welfare state. Here, we test the hypothesis that individual differences in the resting-state quantitative EEG power spectrum of adult horses (N = 18) and its lateralization pattern may reflect individual subjective perception of their conditions of life and welfare state. The results show clear individual differences in the proportions of the different waves and their inter-hemispheric distribution. Three different EEG power spectrum profiles were highlighted, from a bilateral predominance of theta waves in horses in a more positive welfare state to a bilateral predominance of beta waves in horses with clear expressions of compromised welfare. Interestingly, particular correlations were found between wave power activity and welfare parameters. We found a negative correlation between the number of stereotypic behaviours per hour and the median proportion of theta waves in the left hemisphere. and between the overall state (total chronic stress score) of welfare and gamma production in the right hemisphere (RH). These findings go along the hypothesis of a particular involvement of the left hemisphere for positive processing and of the right hemisphere for negative processing. However, the pattern of laterality did not appear as the most important feature here as both extreme clusters in terms of welfare showed bilateral predominance of one wave type. It is possible that hemispheric specialization makes more sense during acute emotion-inducing conditions rather than in this resting-state context (i.e. in absence of any high emotion-inducing stimulation), although the opposition gamma versus theta waves between both hemispheres in the horses with an intermediate welfare state is noticeable and intriguing. It seems that bilateral but also LH theta activity is a promising neurophysiological marker of good welfare in horses, while a bilateral or RH high production of gamma waves should alert about potential welfare alterations. Quantitative resting-state EEG power spectrum appears as a highly promising tool for exploring the brain processes involved in the subjective perception of chronic welfare, as a useful complementary tool for welfare assessment. |
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0168-1591 |
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Equine Behaviour @ team @ |
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6628 |
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| Permanent link to this record |
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Author |
Stomp, M.; d'Ingeo, S.; Henry, S.; Cousillas, H.; Hausberger, M. |
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Title |
Brain activity reflects (chronic) welfare state: Evidence from individual electroencephalography profiles in an animal model |
Type |
Journal Article |
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Year |
2021 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
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Volume |
236 |
Issue |
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Pages |
105271 |
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Keywords |
Laterality; Electroencephalography; Theta wave; Welfare; Horses |
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Abstract |
Assessing the animal welfare state is a challenge given the subjective individual cognitive and emotional processing involved. Electroencephalography (EEG) spectrum analysis has proved an ecologically valid recording situation to assess the link between brain processes and affective or cognitive states in humans: a higher slow wave/fast wave ratio has been associated with a positive internal state. In particular, a high production of theta power (3-8 Hz) has been related to positive emotions. On the other hand, it has been hypothesized that a left hemisphere (LH) dominance may be associated with a better welfare state. Here, we test the hypothesis that individual differences in the resting-state quantitative EEG power spectrum of adult horses (N = 18) and its lateralization pattern may reflect individual subjective perception of their conditions of life and welfare state. The results show clear individual differences in the proportions of the different waves and their inter-hemispheric distribution. Three different EEG power spectrum profiles were highlighted, from a bilateral predominance of theta waves in horses in a more positive welfare state to a bilateral predominance of beta waves in horses with clear expressions of compromised welfare. Interestingly, particular correlations were found between wave power activity and welfare parameters. We found a negative correlation between the number of stereotypic behaviours per hour and the median proportion of theta waves in the left hemisphere. and between the overall state (total chronic stress score) of welfare and gamma production in the right hemisphere (RH). These findings go along the hypothesis of a particular involvement of the left hemisphere for positive processing and of the right hemisphere for negative processing. However, the pattern of laterality did not appear as the most important feature here as both extreme clusters in terms of welfare showed bilateral predominance of one wave type. It is possible that hemispheric specialization makes more sense during acute emotion-inducing conditions rather than in this resting-state context (i.e. in absence of any high emotion-inducing stimulation), although the opposition gamma versus theta waves between both hemispheres in the horses with an intermediate welfare state is noticeable and intriguing. It seems that bilateral but also LH theta activity is a promising neurophysiological marker of good welfare in horses, while a bilateral or RH high production of gamma waves should alert about potential welfare alterations. Quantitative resting-state EEG power spectrum appears as a highly promising tool for exploring the brain processes involved in the subjective perception of chronic welfare, as a useful complementary tool for welfare assessment. |
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0168-1591 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
6629 |
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Author |
Suagee-Bedore, J.K.; Linden, D.R.; Bennett-Wimbush, K. |
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Title |
Effect of Pen Size on Stress Responses of Stall-Housed Horses Receiving One Hour of Daily Turnout |
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Journal Article |
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Year |
2021 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
J. Equine Vet. Sci. |
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98 |
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Pages |
103366 |
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Keywords |
Agonistic behaviors; Cortisol; Group turnout; Paddock sizes |
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Abstract |
Group turnout provides important socializing opportunities for horses, particularly those that are primarily stalled. A high percentage of equine injuries occur during group turnout, which could partly be due to the physical constraints of fencing. To investigate appropriate paddock sizes for group turnouts, horses (n = 12) from a single herd were divided into groups of 4, stalled for 24 hours, and then turned out for 1 hour into one of three differently sized pens: 342, 263, and 184 m2 per horse. Groups rotated through pens across 3 days, receiving one treatment per day. Blood was sampled for cortisol concentrations at 08:00 hours each morning, and then at 15 and 60 minutes into the turn out sessions, and 60 minutes after return to individual stalls. Groups rotated through three turnout times: 09:00, 12:00, 14:00 hours. Counts of agonistic behaviors (chasing, contact biting, and kicking) and low-level threats (pinned ears, tail swishing, bite and kick threats) were recorded. When turned out in pens that provided 342 m2 per horse, horses exhibited reduced plasma cortisol concentrations by 15 minutes after turnout and at 1 hour after return to their stalls (P < .05). Horses in pens providing 184 m2 per horse exhibited greater agonistic (P < .001) and low-level threat (P < .01) behaviors than horses in larger pens. These data provide insight into appropriate pen sizes for horses from established herds. Providing at least 342 m2 per horse may reduce the chance of injury in horses accustomed to group turnout. |
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0737-0806 |
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Equine Behaviour @ team @ |
Serial |
6694 |
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