| Records |
| Author |
Smith, D.G.; Pearson, R.A. |
| Title |
A review of the factors affecting the survival of donkeys in semi-arid regions of sub-Saharan Africa |
Type |
Journal Article |
| Year |
2005 |
Publication |
Tropical Animal Health and Production |
Abbreviated Journal |
Trop Anim Health Prod |
Volume  |
37 Suppl 1 |
Issue |
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Pages |
1-19 |
| Keywords |
Africa South of the Sahara; Animal Nutrition Physiology; Animals; Behavior, Animal; Cattle; Equidae/growth & development/*physiology; Socioeconomic Factors |
| Abstract |
The large fluctuations seen in cattle populations during periods of drought in sub-Saharan Africa are not evident in the donkey population. Donkeys appear to have a survival advantage over cattle that is increasingly recognized by smallholder farmers in their selection of working animals. The donkey's survival advantages arise from both socioeconomic and biological factors. Socioeconomic factors include the maintenance of a low sustainable population of donkeys owing to their single-purpose role and their low social status. Also, because donkeys are not usually used as a meat animal and can provide a regular income as a working animal, they are not slaughtered in response to drought, as are cattle. Donkeys have a range of physiological and behavioural adaptations that individually provide small survival advantages over cattle but collectively may make a large difference to whether or not they survive drought. Donkeys have lower maintenance costs as a result of their size and spend less energy while foraging for food; lower energy costs result in a lower dry matter intake (DMI) requirement. In donkeys, low-quality diets are digested almost as efficiently as in ruminants and, because of a highly selective feeding strategy, the quality of diet obtained by donkeys in a given pasture is higher than that obtained by cattle. Lower energy costs of walking, longer foraging times per day and ability to tolerate thirst may allow donkeys to access more remote, under-utilized sources of forage that are inaccessible to cattle on rangeland. As donkeys become a more popular choice of working animal for farmers, specific management practices need to be devised that allow donkeys to fully maximize their natural survival advantages. |
| Address |
Department of Agriculture and Forestry, University of Aberdeen, Aberdeen, AB24 3FX, Scotland, UK. d.g.smith@abdn.ac.uk |
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English |
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| ISSN |
0049-4747 |
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| Notes |
PMID:16335068 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4231 |
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| Author |
Lyda, R.O.; Hall, J.R.; Kirkpatrick, J.F. |
| Title |
A comparison of Freund's Complete and Freund's Modified Adjuvants used with a contraceptive vaccine in wild horses (Equus caballus) |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians |
Abbreviated Journal |
J Zoo Wildl Med |
| Volume |
36 |
Issue |
4 |
Pages |
610-616 |
| Keywords |
Animals; Antibody Formation; Contraception, Immunologic/*veterinary; Estrus/drug effects; Female; Freund's Adjuvant/administration & dosage/adverse effects/*immunology; Horses/immunology/*physiology; *Vaccines, Contraceptive; Zona Pellucida/*immunology |
| Abstract |
Fifteen captive wild mares (Equus caballus) were treated with porcine zona pellucida contraceptive vaccine and either Freund's Complete Adjuvant (n = 7) or Freund's Modified Adjuvant (n = 8). All mares received a booster inoculation of porcine zona pellucida plus Freund's Incomplete Adjuvant a month later. Anti-porcine zona pellucida antibodies were measured over 10 mo following the initial inoculation. There were no significant differences in antibody titers at any point during the 10 mo, and seven of the eight mares in the Freund's Modified Adjuvant group were above the 60% level at the end of the study, which is considered to be the contraceptive threshold for horses. There were no significant differences in titers between pregnant and nonpregnant horses, nor was there a significant correlation between age and titers. One local injection site reaction occurred after booster treatment with Freund's Incomplete Adjuvant, and 11 healthy foals were born during the course of the study. These data suggest that Freund's Modified Adjuvant is an acceptable substitute for Freund's Complete Adjuvant in certain free-ranging and captive wildlife species. |
| Address |
Science and Conservation Center, 2100 South Shiloh Road, Billings, Montana 59106, USA |
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1042-7260 |
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PMID:17312717 |
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no |
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refbase @ user @ |
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139 |
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Robert, N.; Walzer, C.; Ruegg, S.R.; Kaczensky, P.; Ganbaatar, O.; Stauffer, C. |
| Title |
Pathologic findings in reintroduced Przewalski's horses (Equus caballus przewalskii) in southwestern Mongolia |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians |
Abbreviated Journal |
J Zoo Wildl Med |
| Volume |
36 |
Issue |
2 |
Pages |
273-285 |
| Keywords |
Animals; Babesiosis/epidemiology/pathology/*veterinary; Cause of Death; Conservation of Natural Resources; Disease Susceptibility/veterinary; Environment; Female; Food Chain; Horse Diseases/*epidemiology/pathology; Horses; Male; Mongolia/epidemiology; Streptococcal Infections/epidemiology/pathology/*veterinary; *Streptococcus equi; Theileriasis/*epidemiology/pathology; Weather |
| Abstract |
The Przewalski's horse (Equus caballus przewalskii) was extinct in the wild by the mid 1960s. The species has survived because of captive breeding only. The Takhin Tal reintroduction project is run by the International Takhi Group; it is one of two projects reintroducing horses to the wild in Mongolia. In 1997 the first harem group was released. The first foals were successfully raised in the wild in 1999. Currently, 63 Przewalski's horses live in Takhin Tal. Little information exists on causes of mortality before the implementation of a disease-monitoring program in 1998. Since 1999, all dead horses recovered (n = 28) have been examined and samples collected and submitted for further investigation. Equine piroplasmosis, a tick-transmitted disease caused by Babesia caballi or Theileria equi, is endemic in Takhin Tal and was identified as the cause of death of four stallions and one stillborn foal. In December 2000, wolf predation was implicated in the loss of several Przewalski's horses. However, thorough clinical, pathologic, and bacteriologic investigations performed on dead and surviving horses of this group revealed lesions compatible with strangles. The extreme Mongolian winter of 2000-2001 is thought to have most probably weakened the horses, making them more susceptible to opportunistic infection and subsequent wolf predation. Other occasional causes of death since 1999 were trauma, exhaustion, wasting, urolithiasis, pneumonia, abortion, and stillbirth. The pathologic examination of the Przewalski's horses did not result in a definitive diagnosis in each case. Several disease factors were found to be important in the initial phase of the reintroduction, which could potentially jeopardize the establishment of a self-sustaining population. |
| Address |
Center for Fish and Wildlife Health, Institute of Animal Pathology, University of Berne, Langgass-Strasse 122, CH-3001 Berne, Switzerland |
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1042-7260 |
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| Notes |
PMID:17323569 |
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no |
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Serial |
2023 |
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| Author |
Landsberg, G.; Araujo, J.A. |
| Title |
Behavior problems in geriatric pets |
Type |
Journal Article |
| Year |
2005 |
Publication |
The Veterinary Clinics of North America. Small Animal Practice |
Abbreviated Journal |
Vet Clin North Am Small Anim Pract |
| Volume |
35 |
Issue |
3 |
Pages |
675-698 |
| Keywords |
Aging/*pathology/physiology/*psychology; Animals; *Behavior, Animal; Cats/*physiology/psychology; Cognition/physiology; Diagnosis, Differential; Dogs/*physiology/psychology; Preventive Medicine |
| Abstract |
Aging pets often suffer a decline in cognitive function (eg, memory,learning, perception, awareness) likely associated with age-dependent brain alterations. Clinically, cognitive dysfunction may result in various behavioral signs, including disorientation; forgetting of previously learned behaviors, such as house training; alterations in the manner in which the pet interacts with people or other pets;onset of new fears and anxiety; decreased recognition of people, places, or pets; and other signs of deteriorating memory and learning ability. Many medical problems, including other forms of brain pathologic conditions, can contribute to these signs. The practitioner must first determine the cause of the behavioral signs and then determine an appropriate course of treatment, bearing in mind the constraints of the aging process. A diagnosis of cognitive dysfunction syndrome is made once other medical and behavioral causes are ruled out. |
| Address |
Doncaster Animal Clinic, 99 Henderson Avenue, Thornhill, Ontario L3T2K9, Canada. gmlandvm@aol.com |
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English |
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0195-5616 |
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| Notes |
PMID:15833565 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2855 |
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Gibson, B.M.; Juricevic, I.; Shettleworth, S.J.; Pratt, J.; Klein, R.M. |
| Title |
Looking for inhibition of return in pigeons |
Type |
Journal Article |
| Year |
2005 |
Publication |
Learning & behavior : a Psychonomic Society publication |
Abbreviated Journal |
Learn Behav |
| Volume |
33 |
Issue |
3 |
Pages |
296-308 |
| Keywords |
Animals; Behavior, Animal/*physiology; Columbidae; *Inhibition (Psychology); Reinforcement (Psychology) |
| Abstract |
We conducted four experiments in order to investigate whether pigeons' responses to a recently attended (i.e., recently pecked) location are inhibited. In Experiments 1 and 2, stimulus displays were similar to those used in studies of inhibition of return (IOR) with humans; responses to cued targets tended to be facilitated rather than inhibited. In Experiments 3 and 4, birds were presented with stimulus displays that mimicked clusters of small grains and were relatively localized, which should have been more appropriate for detecting IOR in pigeons. The results from these experiments again provided evidence for facilitation of responding to cued targets, rather than for IOR. |
| Address |
University of Toronto, Toronto, Ontario, Canada. bgibson@cisunix.unh.edu |
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English |
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1543-4494 |
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| Notes |
PMID:16396077 |
Approved |
no |
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refbase @ user @ |
Serial |
359 |
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| Author |
Tizo-Pedroso, E.; Del-Claro, K. |
| Title |
Matriphagy In The Neotropical Pseudoscorpion Paratemnoides Nidificator (Balzan 1888) (Atemnidae) |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of Arachnology |
Abbreviated Journal |
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| Volume |
33 |
Issue |
3 |
Pages |
873-877 |
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| Abstract |
We studied the natural history and social behavior of Paratemnoides nidificator (Balzan 1888) in a tropical savanna system. Females were responsible for all nymphal care. We observed, for the first time in pseudoscorpions, the occurrence of matriphagy behavior by the offspring. During conditions of food deprivation, the mother went out of the nest and passively awaited the protonymphs' attack, not reacting to the capture nor to the nymphs feeding on her body. We suggest that this extreme form of parental care, matriphagy, can reduce cannibalism among protonymphs and facilitate the evolution of social behavior in pseudoscorpions. RESUMO Nos estudamos a historia natural e o comportamento social de Paratemnoides nidificator (Balzan 1888) na regiao dos cerrados. As femeas foram responsaveis por todo o cuidado as ninfas. Nos observamos, pela primeira vez em pseudoescorpioes, a ocorrencia de matrifagia pela prole. Em condicoes de fome, a mae deixa o ninho e passivamente espera que as protoninfas a ataquem, nao reagindo nem a captura, nem a alimentacao das ninfas sobre seu corpo. Nos sugerimos que esta forma extrema de cuidado parental, matrifagia, possa reduzir o canibalismo entre as protoninfas e assim facilitar a evolucao de comportamento social em pseudoescorpioes. |
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Equine Behaviour @ team @ |
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4718 |
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Burch, J.W.; Layne, G.A.; Follmann, E.H.; Rexstad, E.A. |
| Title |
Evaluation of Wolf Density Estimation from Radiotelemetry Data |
Type |
Journal Article |
| Year |
2005 |
Publication |
Wildl Soc Bull |
Abbreviated Journal |
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33 |
Issue |
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Equine Behaviour @ team @ Burch2005 |
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6477 |
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| Author |
Zentall, T.R.; Kaiser, D.H. |
| Title |
Interval timing with gaps: gap ambiguity as an alternative to temporal decay |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
31 |
Issue |
4 |
Pages |
484-486 |
| Keywords |
Animals; Behavior, Animal; Discrimination (Psychology)/*physiology; Memory/*physiology; Rats; Time Perception/*physiology |
| Abstract |
C. V. Buhusi, D. Perera, and W. H. Meck (2005) proposed a hypothesis of timing in rats to account for the results of experiments that have used the peak procedure with gaps. According to this hypothesis, the introduction of a gap causes the animal's memory for the pregap interval to passively decay (subjectively shorten) in direct proportion to the duration and salience of the gap. Thus, animals should pause with short, nonsalient gaps but should reset their clock with longer, salient gaps. The present authors suggest that the ambiguity of the gap (i.e., the similarity between the gap and the intertrial interval in both appearance and relative duration) causes the animal to actively reset the clock and prevents adequate assessments of the fate of timed intervals prior to the gap. Furthermore, when the intertrial interval is discriminable from the gap, the evidence suggests that timed intervals prior to the gap are not lost but are retained in memory. |
| Address |
Department of Psychology, University of Kentucky, Lexington, KY 40506, USA. zentall@uky.edu |
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0097-7403 |
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| Notes |
PMID:16248734 |
Approved |
no |
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refbase @ user @ |
Serial |
220 |
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Skov-Rackette, S.I.; Shettleworth, S.J. |
| Title |
What do rats learn about the geometry of object arrays? Tests with exploratory behavior |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
31 |
Issue |
2 |
Pages |
142-154 |
| Keywords |
Animals; Behavior, Animal; *Discrimination Learning; *Exploratory Behavior; Female; *Form Perception; Habituation, Psychophysiologic; Male; Rats; Rats, Long-Evans |
| Abstract |
Six experiments using habituation of exploratory behavior tested whether disoriented rats foraging in a large arena encode the shapes of arrays of objects. Rats did not respond to changes in position of a single object, but they responded to a change in object color and to a change in position of 1 object in a square array, as in previous research (e.g., C. Thinus-Blanc et al., 1987). Rats also responded to an expansion of a square array, suggesting that they encoded sets of interobject distances rather than overall shape. In Experiments 4-6, rats did not respond to changes in sense of a triangular array that maintained interobject distances and angles. Shapes of object arrays are encoded differently from shapes of enclosures. |
| Address |
Department of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada. shannon.skov.rackette@utoronto.ca |
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0097-7403 |
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| Notes |
PMID:15839772 |
Approved |
no |
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refbase @ user @ |
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363 |
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Shettleworth, S.J.; Sutton, J.E. |
| Title |
Multiple systems for spatial learning: dead reckoning and beacon homing in rats |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
31 |
Issue |
2 |
Pages |
125-141 |
| Keywords |
Animals; Behavior, Animal; Cues; *Feeding Behavior; Habituation, Psychophysiologic; *Homing Behavior; *Learning; Male; Rats; Rats, Long-Evans; *Space Perception |
| Abstract |
Rats homed with food in a large lighted arena. Without visual cues, they used dead reckoning. When a beacon indicated the home, rats could also use the beacon. Homing did not differ in 2 groups of rats, 1 provided with the beacon and 1 without it; tests without the beacon gave no evidence that beacon learning overshadowed dead reckoning (Experiment 1). When the beacon was at the home for 1 group and in random locations for another, there was again no evidence of cue competition (Experiment 2). Dead reckoning experience did not block acquisition of beacon homing (Experiment 3). Beacon learning and dead reckoning do not compete for predictive value but acquire information in parallel and are used hierarchically. |
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Department of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada. shettle@psych.utoronto.ca |
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0097-7403 |
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| Notes |
PMID:15839771 |
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no |
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refbase @ user @ |
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364 |
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