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Behavior. --- Mink. --- Physiological. --- Stereotypic behavior. --- Stereotypic. --- Stress.
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Behavior. --- Circus. --- Elephant. --- Housing. --- Stereotypic behavior. --- Stereotypic. --- Stereotypy. --- Zoo.
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Behavior. --- Endogenous. --- Opioid. --- Opioids. --- Pig. --- Pigs. --- Stereotypic behavior. --- Stereotypic.
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Behavior. --- Crib-biting. --- Cribbiting. --- Horse. --- Investigation. --- Narcotic. --- Pattern. --- Stereotypic behavior. --- Stereotypic. --- Treatment.
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Behavior. --- Heart rate. --- Heart-rate. --- Heartrate. --- Pig. --- Pigs. --- Stereotypic behavior. --- Stereotypic. --- Stereotypy.
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Association. --- Behavior. --- Child. --- Children. --- Heart rate. --- Heart-rate. --- Interactions. --- Man. --- Mood. --- Social. --- Stereotypic behavior. --- Stereotypic. --- Stereotypy.
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Five cribbing horses and six control horses were used in a latin square design dietary study to investigate the effects of different diets on the frequency of cribbing behavior and plasma levels of beta-endorphin in the horse. Feeding grain or sweetened grain rations was found to cause a significant increase in the cribbing frequency whereas alfalfa pelleted hay was without significant effect on the frequency of the behavior. Baseline beta-endorphin levels in cribbing horses were half those of the non-cribbing controls and remained significantly lower during the feeding trials. These results are discussed as they apply to treatment of cribbing horses and in terms of the underlying mechanism of cribbing
Alfalfa. --- Behavior. --- Beta-endorphin. --- Boxes. --- Control. --- Cribbing. --- Design. --- Diet. --- Endorphins. --- Feeding. --- Food. --- Frequency. --- Hay. --- Hormone. --- Horse. --- Horses. --- Increase. --- Increases. --- Level. --- Naloxone. --- Narcotic-antagonists. --- Plasma. --- Self-mutilative behavior. --- Stallion. --- Stereotypic behavior. --- Sucrose. --- Time. --- Treatment.
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Background: Primates reared in captivity may display stereotypic behaviors. These behaviors are arguably reminiscent of human obsessive-compulsive or posttraumatic symptoms, which respond to selective serotonin reuptake inhibitors (SSRIs). Captive primates with marked stereotypic behaviors were entered into a randomized controlled study of the SSRI, fluoxetine. Methods: A sample of 10 vervet monkeys with behaviors such as marked saluting, somersaulting, weaving, or head tossing was selected. Subjects were randomized to receive fluoxetine 1 mg/kg for 6 weeks (n=5) or no treatment (n=5). A rater blind to the medication status of subjects noted the frequency of the stereotypic behaviors. Results: Repeated-measures analysis of variance (RM-ANOVA) demonstrated a significant Group×Time difference with significantly fewer stereotypic symptoms in the fluoxetine group by endpoint. At this time, three of the five fluoxetine-treated subjects (but none of the no-treatment subjects) were responders on the Clinical Global Impressions (CGI) change item (CGI 2). Conclusions: Stereotypic behaviors in captive vervets gradually and partially decrease in response to administration of an SSRI, paralleling research on human anxiety symptoms. Further research on animal stereotypies may be useful in providing appropriate veterinary care, and in exploring the underlying neurobiology of certain psychiatric disorders.
Analysis. --- Animal. --- Anxiety. --- Behavior. --- Captivity. --- Care. --- Disorder. --- Fluoxetine. --- Frequency. --- Group. --- Human. --- Method. --- Monkey. --- Monkeys. --- Neurobiology. --- Obsessive-compulsive. --- Posttraumatic. --- Primate. --- Primates. --- Psychiatric disorder. --- Research. --- Response. --- Serotonin. --- Ssri. --- Stereotypic behavior. --- Stereotypic. --- Stereotypies. --- Stereotypy. --- Time. --- Treatment. --- Veterinary. --- Weaving.
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Stereotypic cribbing in horses is thought to involve excess dopaminergic activity within the striatum. Various models of stress-induced stereotypies including cribbing in horses postulate that stress stimulates the release of endorphins. triggering the release of striatal dopamine. Dopamine in turn activates basal ganglia motor programs, reinforcing behavior via a reward mechanism. Furthermore, the release of dopamine by endorphins has been shown to depend on activation of NMDA receptors. In the present study, horses identified as cribbers and volunteered by their owners were treated with the NMDA receptor antagonist dextromethorphan (DM). When DM was administered via jugular injection (1 mg/kg), eight of nine horses responded with reductions in cribbing rate (CR) compared to baseline, and cribbing was suppressed completely for a period of time in almost half of the horses tested. (C) 2001 Elsevier Science Inc. All rights reserved
Activation. --- Activity. --- Basal ganglia. --- Behavior. --- Dextromethorphan. --- Dopamine. --- Endorphins. --- Horse. --- Horses. --- Model. --- Models. --- Nmda receptor antagonist. --- Nmda receptor. --- Nmda receptors. --- Receptor antagonist. --- Receptor. --- Receptors. --- Reduction. --- Release. --- Reward. --- Stereotypic behavior. --- Stereotypic cribbing. --- Stereotypic. --- Stereotypies. --- Stereotypy. --- Stress. --- Striatum. --- Time.
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Coping behaviour is a response to aversive situations. Farm and laboratory animals kept in intensive housing systems use a set of strategies (escape, remove, search, wait) to cope with aversive situations. It is suggested that these strategies have been shaped by evolution as adaptations to fitness-threatening situations with which animals are confronted in their natural environment. In intensive housing systems, however, the animals often fail to change aversive situations by using these evolved coping strategies, and it is argued that abnormal behaviour can originate from unsuccessful coping behaviour. With respect to animal welfare, it is important to design housing systems that allow the animals to perform effective coping behaviour
Abnormal behaviour. --- Adaptation. --- Animal welfare. --- Animal-welfare. --- Animal. --- Animals. --- Behavioral organization. --- Behaviour. --- Coping strategies. --- Coping strategy. --- Coping. --- Design. --- Domestic-fowl. --- Environment. --- Escape. --- Evolution. --- Frustration. --- Housing system. --- Housing. --- Kept. --- Laboratory animals. --- Laboratory-animals. --- Laboratory. --- Natural. --- Pigs. --- Polar bears. --- Rats. --- Response. --- Search. --- Situations. --- Stereotypic behavior. --- Strategies. --- Strategy. --- System. --- Systems. --- Tethered sows. --- Time. --- Welfare.
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