Records |
Author |
McGreevy, P.D.; Nicol, C.J. |
Title |
Prevention of crib-biting: a review |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
Volume |
|
Issue |
27 |
Pages |
35-38 |
Keywords |
Animals; *Behavior, Animal; Horse Diseases/*prevention & control/psychology; Horses; *Stereotyped Behavior |
Abstract |
Crib-biting is a common oral stereotype. Because of perceived deleterious effects on the health and appearance of subjects the prevention of crib-biting is regularly attempted. The resourcefulness of horses in satisfying their motivation to perform this behaviour often frustrates owners' efforts at prevention. This paper reviews the efficacy and observable consequences of attempting to prevent crib-biting by a variety of methods. These include attempts to prevent the grasping of objects, to interfere with air-engulfing and to introduce punishment for grasping and neck-flexion. Other approaches include the use of surgery, acupuncture, pharmaceuticals, operant feeding and environmental enrichment. A remedy that is effective for every crib-biter remains elusive. We conclude that, rather than concentrating on remedial prevention, further research should be directed at establishing why horses crib-bite and how the emergence of crib-biting can be avoided. |
Address |
Department of Clinical Veterinary Science, University of Bristol, UK |
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English |
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PMID:10485002 |
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no |
Call Number |
refbase @ user @ |
Serial |
87 |
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Author |
McGreevy, P.D.; Nicol, C.J. |
Title |
The effect of short-term prevention on the subsequent rate of crib-biting in thoroughbred horses |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
Volume |
|
Issue |
27 |
Pages |
30-34 |
Keywords |
Analysis of Variance; Animals; *Behavior, Animal; Horse Diseases/*prevention & control/psychology; Horses; Male; Recurrence; *Stereotyped Behavior; Videotape Recording |
Abstract |
The results of an experimental study of the motivational consequences of short-term prevention of crib-biting are reported here. Eight test horses wore a cribbing collar for 24 h. This was effective in preventing crib-biting in 6 subjects. Using analysis of co-variance that accounted for baseline differences in crib-biting rate, test horses showed significantly more crib-biting than control horses on the first day after prevention (P < 0.05). There was also a highly significant increase in the crib-biting rate of test horses on the first day after prevention in comparison with their baseline rate (P < 0.01). This defines the increase as a post inhibitory rebound. An increase in the novelty of the cribbing bar and an increase in feeding motivation during the period of prevention are rejected as explanations of the rebound in this study. Instead, it is suggested that the rebound reflected a rise in internal motivation to crib-bite during the period of prevention. Behaviours that exhibit this pattern of motivation are generally considered functional; and it has been argued that their prevention may compromise welfare. |
Address |
Department of Clinical Veterinary Science, University of Bristol, UK |
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English |
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PMID:10485001 |
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no |
Call Number |
refbase @ user @ |
Serial |
88 |
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Author |
McGreevy, P.D.; French, N.P.; Nicol, C.J. |
Title |
The prevalence of abnormal behaviours in dressage, eventing and endurance horses in relation to stabling |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1995 |
Publication |
The Veterinary record |
Abbreviated Journal |
Vet. Rec. |
Volume |
137 |
Issue |
2 |
Pages |
36-37 |
Keywords |
Animal Husbandry/*methods; Animals; *Behavior, Animal; Horse Diseases/*psychology; Horses; *Physical Conditioning, Animal; Prevalence; Questionnaires; *Stereotyped Behavior |
Abstract |
The behaviour of horses competing in different disciplines was studied and the relationship between the time they spent out of the stable and the prevalence of abnormal behaviour was examined. The owners of dressage, eventing and endurance horses were sent a questionnaire and a total of 1101 responses were received, giving data on 1750 horses. The behaviours studied were wood-chewing, weaving, crib-biting/wind-sucking and box-walking. The reported percentage prevalences of abnormal behaviour for the dressage, eventing and endurance horses were 32.5, 30.8 and 19.5, respectively. The relationship between the time spent in the stable and the prevalence of abnormal behaviour was examined by chi 2 tests which showed that there were significant linear trends for the eventing group (P < 0.001) and the dressage group (P < 0.05). It is concluded that the time a horse spends out of the stable is related to the discipline for which it is being trained and in dressage and eventing horses the time spent in a stable is correlated with an increased risk of abnormal behaviour. |
Address |
University of Bristol, Department of Clinical Veterinary Science, Langford |
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English |
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ISSN |
0042-4900 |
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Notes |
PMID:8525580 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
89 |
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Author |
Carroll, G.L.; Matthews, N.S.; Hartsfield, S.M.; Slater, M.R.; Champney, T.H.; Erickson, S.W. |
Title |
The effect of detomidine and its antagonism with tolazoline on stress-related hormones, metabolites, physiologic responses, and behavior in awake ponies |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1997 |
Publication |
Veterinary surgery : VS : the official journal of the American College of Veterinary Surgeons |
Abbreviated Journal |
Vet Surg |
Volume |
26 |
Issue |
1 |
Pages |
69-77 |
Keywords |
Adrenergic alpha-Antagonists/administration & dosage/*pharmacology; Animals; Behavior, Animal/drug effects/physiology; Blood Glucose/metabolism; Blood Pressure/drug effects/physiology; Consciousness/physiology; Dose-Response Relationship, Drug; Drug Interactions; Epinephrine/blood; Fatty Acids, Nonesterified/blood; Female; Heart Rate/drug effects/physiology; Horse Diseases/metabolism/physiopathology/psychology; Horses/blood/metabolism/*physiology; Hydrocortisone/blood; Hypnotics and Sedatives/administration & dosage/*pharmacology; Imidazoles/administration & dosage/*pharmacology; Injections, Intravenous; Male; Norepinephrine/blood; Receptors, Adrenergic, alpha/drug effects/*physiology; Stress/metabolism/physiopathology/veterinary; Time Factors; Tolazoline/administration & dosage/*pharmacology |
Abstract |
Six ponies were used to investigate the effect of tolazoline antagonism of detomidine on physiological responses, behavior, epinephrine, norepinephrine, cortisol, glucose, and free fatty acids in awake ponies. Each pony had a catheter inserted into a jugular vein 1 hour before beginning the study. Awake ponies were administered detomidine (0.04 mg/kg intravenously [i.v.]) followed 20 minutes later by either tolazoline (4.0 mg/kg i.v.) or saline. Blood samples were drawn from the catheter 5 minutes before detomidine administration (baseline), 5 minutes after detomidine administration, 20 minutes before detomidine administration which was immediately before the administration of tolazoline or saline (time [T] = 0), and at 5, 30, and 60 minutes after injections of tolazoline or saline (T = 5, 30, and 60 minutes, respectively). Compared with heart rate at T = 0, tolazoline antagonism increased heart rate 45% at 5 minutes. There was no difference in heart rate between treatments at 30 minutes. Blood pressure remained stable after tolazoline, while it decreased over time after saline. Compared with concentrations at T = 0, tolazoline antagonism of detomidine in awake ponies resulted in a 55% increase in cortisol at 30 minutes and a 52% increase in glucose at 5 minutes. The change in free fatty acids was different for tolazoline and saline over time. Free fatty acids decreased after detomidine administration. Free fatty acids did not change after saline administration. After tolazoline administration, free fatty acids increased transiently. Tolazoline tended to decrease sedation and analgesia at 15 and 60 minutes postantagonism. Antagonism of detomidine-induced physiological and behavioral effects with tolazoline in awake ponies that were not experiencing pain appears to precipitate a stress response as measured by cortisol, glucose, and free fatty acids. If antagonism of an alpha-agonist is contemplated, the potential effect on hormones and metabolites should be considered. |
Address |
Department of Small Animal Medicine and Surgery, Texas A&M University, College Station, USA |
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English |
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ISSN |
0161-3499 |
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Notes |
PMID:9123816 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
96 |
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Author |
Khalil, A.M.; Murakami, N.; Kaseda, Y. |
Title |
Relationship between plasma testosterone concentrations and age, breeding season and harem size in Misaki feral horses |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1998 |
Publication |
The Journal of veterinary medical science / the Japanese Society of Veterinary Science |
Abbreviated Journal |
J Vet Med Sci |
Volume |
60 |
Issue |
5 |
Pages |
643-645 |
Keywords |
Age Factors; Animals; Animals, Wild; *Horses; Japan; Male; Reproduction; Seasons; Sexual Behavior, Animal; Sexual Maturation; *Social Behavior; Testosterone/*blood |
Abstract |
Jugular vein blood samples were collected from 23 young and sexual mature feral stallions to examine the relationship between plasma testosterone concentration and age, breeding season or harem size. Testosterone concentration increased with the age of the stallions until they formed their own harems, at about 4 to 6 years old. Seasonal variations in testosterone concentrations were observed, and found to be significantly higher (P<0.001) throughout the breeding season than non-breeding season, from 3 years of age. Testosterone levels were correlated with harem size for individual stallions. It can be inferred from these results that there is a relationship between plasma testosterone concentration and age, breeding season and harem size. |
Address |
Laboratory of Animal Behavioral Science, Faculty of Agriculture, Miyazaki University, Japan |
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English |
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ISSN |
0916-7250 |
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Notes |
PMID:9637303 |
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no |
Call Number |
refbase @ user @ |
Serial |
137 |
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Author |
Turner, J.W.J.; Kirkpatrick, J.F. |
Title |
Androgens, behaviour and fertility control in feral stallions |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1982 |
Publication |
Journal of reproduction and fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
Volume |
32 |
Issue |
|
Pages |
79-87 |
Keywords |
Animals; Animals, Wild; Copulation/drug effects; Female; *Fertility/drug effects; Horses/*physiology; Male; Periodicity; Pregnancy; Seasons; *Sexual Behavior, Animal/drug effects; Sexual Maturation; Sperm Count; Sperm Motility/drug effects; Testosterone/*blood/pharmacology |
Abstract |
This field study of feral stallions in Montana and Idaho examines and correlates the seasonal pattern of plasma androgens and specific sociosexual behaviour and reports the effect of a long-acting androgenic steroid on this behaviour and on fertility. Plasma testosterone was measured by competitive protein binding assay in samples obtained by jugular venepuncture from captured animals. In samples taken from 34 sexually mature stallions in 6 different months during the year, a definite seasonal pattern in testosterone was present, with a peak in May (3.04 +/- 0.63 ng/ml) and a nadir in December (1.55 +/- 0.34 ng/ml). Values were less than 2.0 ng/ml in non-breeding months and greater than 2.4 ng/ml in breeding months. Behavioural endpoints measured were (1) stallion scent marking in response to elimination by mares (elimination marking), (2) mounting and (3) copulation. The frequencies of each of these endpoints followed closely the seasonal pattern seen for plasma androgens. In the fertility study microcapsulated testosterone propionate (microTP) was administered i.m. to 10 harem stud stallions 3 months before the 1980 breeding season. In these stallions and in 10 control harem studs, the above behavioural endpoints were examined in the 1980 and 1981 breeding seasons, and foal counts were made in 1981. There were no direct inhibitory or stimulatory effects of microTP treatment on any of the behavioural endpoints in either year. In 1981 foals were produced in 87.5% of the control bands and 28.4% of the microTP-treated bands. These results indicate that microencapsulated testosterone propionate can provide effective fertility control in feral horses without causing significant alterations in sociosexual behaviour. |
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ISSN |
0449-3087 |
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Notes |
PMID:6962905 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
138 |
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Author |
Kirkpatrick, J.F.; Vail, R.; Devous, S.; Schwend, S.; Baker, C.B.; Wiesner, L. |
Title |
Diurnal variation of plasma testosterone in wild stallions |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
1976 |
Publication |
Biology of reproduction |
Abbreviated Journal |
Biol Reprod |
Volume |
15 |
Issue |
1 |
Pages |
98-101 |
Keywords |
Animals; *Circadian Rhythm; Horses/*blood; Male; Montana; Sexual Behavior, Animal; Species Specificity; Testosterone/*blood |
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0006-3363 |
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PMID:986195 |
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no |
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refbase @ user @ |
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149 |
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Author |
Brosnan, S.F.; Freeman, C.; De Waal, F.B.M. |
Title |
Partner's behavior, not reward distribution, determines success in an unequal cooperative task in capuchin monkeys |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
2006 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
Volume |
68 |
Issue |
7 |
Pages |
713-724 |
Keywords |
Animals; Behavior, Animal/*physiology; Cebus/*physiology; *Cooperative Behavior; Female; Food Preferences/physiology; Male; *Reward |
Abstract |
It was recently demonstrated that capuchin monkeys notice and respond to distributional inequity, a trait that has been proposed to support the evolution of cooperation in the human species. However, it is unknown how capuchins react to inequitable rewards in an unrestricted cooperative paradigm in which they may freely choose both whether to participate and, within the bounds of their partner's behavior, which reward they will receive for their participation. We tested capuchin monkeys with such a design, using a cooperative barpull, which has been used with great success in the past. Contrary to our expectations, the equity of the reward distribution did not affect success or pulling behavior. However, the behavior of the partner in an unequal situation did affect overall success rates: pairs that had a tendency to alternate which individual received the higher-value food in unequal reward situations were more than twice as successful in obtaining rewards than pairs in which one individual dominated the higher-value food. This ability to equitably distribute rewards in inherently biased cooperative situations has profound implications for activities such as group hunts, in which multiple individuals work together for a single, monopolizable reward. |
Address |
Living Links Center, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, USA. sbrosna@emory.edu |
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ISSN |
0275-2565 |
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PMID:16786518 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
160 |
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Author |
Bonnie, K.E.; de Waal, F.B.M. |
Title |
Affiliation promotes the transmission of a social custom: handclasp grooming among captive chimpanzees |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
2006 |
Publication |
Primates |
Abbreviated Journal |
Primates |
Volume |
47 |
Issue |
1 |
Pages |
27-34 |
Keywords |
Animals; Animals, Zoo/*physiology; Behavior, Animal/*physiology; *Cultural Evolution; Grooming/*physiology; Observation; Pan troglodytes/*physiology; *Social Behavior |
Abstract |
Handclasp grooming is a unique social custom, known to occur regularly among some, but not all populations of chimpanzees (Pan troglodytes). As with other cultural behaviors, it is assumed that this distinctive grooming posture is learned socially by one individual from another. However, statistical comparisons among factors thought to influence how a behavior spreads within a group have never, to our knowledge, been conducted. In the present study, the origination and spread of handclasp grooming in a group of captive chimpanzees was followed throughout more than 1,500 h of observation over a period of 12 years. We report on the frequency, bout duration, and number and demography of performers throughout the study period, and compare these findings to those reported for wild populations. We predicted that dyads with strong affiliative ties, measured by time spent in proximity to and grooming one another, were likely to develop a handclasp grooming partnership during the study period. A quadratic assignment procedure was used to compare correlations among observed frequencies of grooming and proximity with handclasp grooming in all possible dyads within the group. As predicted, the formation of new handclasp grooming dyads was positively correlated with the rate of overall grooming and proximity within a dyad. In addition, in nearly all dyads formed, at least one individual had been previously observed to handclasp groom. We concluded that affiliation and individual experience determines the transmission of handclasp grooming among captive chimpanzees. |
Address |
Department of Psychology, Emory University, and Living Links Center, Yerkes National Primate Research Center, GA 30329, USA. kebonni@emory.edu |
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0032-8332 |
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PMID:16142425 |
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no |
Call Number |
refbase @ user @ |
Serial |
161 |
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Author |
de Waal, F.B.M. |
Title |
A century of getting to know the chimpanzee |
Type ![sorted by Type field, descending order (down)](img/sort_desc.gif) |
Journal Article |
Year |
2005 |
Publication |
Nature |
Abbreviated Journal |
Nature |
Volume |
437 |
Issue |
7055 |
Pages |
56-59 |
Keywords |
Aggression; Animals; Behavior, Animal/*physiology; Competitive Behavior; Cooperative Behavior; Female; Humans; Male; Pan troglodytes/genetics/*physiology/psychology; Sexual Behavior, Animal; *Social Behavior |
Abstract |
A century of research on chimpanzees, both in their natural habitat and in captivity, has brought these apes socially, emotionally and mentally much closer to us. Parallels and homologues between chimpanzee and human behaviour range from tool-technology and cultural learning to power politics and intercommunity warfare. Few behavioural domains have remained untouched by this increased knowledge, which has dramatically challenged the way we view ourselves. The sequencing of the chimpanzee genome will no doubt bring more surprises and insights. Humans do occupy a special place among the primates, but this place increasingly has to be defined against a backdrop of substantial similarity. |
Address |
Living Links, Yerkes National Primate Research Center, Emory University, 954 North Gatewood Road, Atlanta, Georgia 30322, USA. dewaal@emory.edu |
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1476-4687 |
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Notes |
PMID:16136128 |
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no |
Call Number |
refbase @ user @ |
Serial |
162 |
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