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Author |
Nagell K; Olguin RS; Tomasello M |
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Title |
Processes of social learning in the tool use of chimpanzees (Pan troglodytes) and human children (Homo sapiens) |
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1993 |
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J. Comp. Psychol. |
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107 |
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174 |
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Equine Behaviour @ team @ |
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3021 |
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Author |
Povinelli DJ |
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Title |
Reconstructing the evolution of mind |
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Year |
1993 |
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Am. Psychol. |
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48(5) |
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493 |
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Equine Behaviour @ team @ |
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3027 |
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Author |
Povinelli DJ; Rulf AB; Landau KR; Bierschwale DT |
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Title |
Self-recognition in chimpanzees (Pan troglodytes): distribution, ontogeny, and patterns of emergence |
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1993 |
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J. Comp. Psychol. |
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107 |
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347 |
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Equine Behaviour @ team @ |
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3033 |
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Author |
Russon AE; Galdikas BMF |
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Title |
Imitation in free-ranging rehabilitant orangutans (Pongo pygmaeus) |
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Journal Article |
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Year |
1993 |
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J. Comp. Psychol. |
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107 |
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147 |
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Equine Behaviour @ team @ |
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3036 |
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Author |
Tomasello M; Savage-Rumbaugh S; Kruger AC |
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Title |
Imitative learning of actions on objects by children, chimpanzees, and enculturated chimpanzees |
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Journal Article |
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Year |
1993 |
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Child Dev. |
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64 |
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1688 |
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Equine Behaviour @ team @ |
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3044 |
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Author |
Timberlake, W. |
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Title |
Animal Behavior: A Continuing Synthesis |
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Journal Article |
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Year |
1993 |
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Annual Review of Psychology |
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44 |
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1 |
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675-706 |
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refbase @ user @ |
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3537 |
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Author |
Dabareiner, R.M.; Sullins, K.E.; White, N.A. 2nd |
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Title |
Progression of femoropatellar osteochondrosis in nine young horses. Clinical, radiographic and arthroscopic findings |
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Journal Article |
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Year |
1993 |
Publication |
Veterinary Surgery : VS : the Official Journal of the American College of Veterinary Surgeons |
Abbreviated Journal |
Vet Surg |
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Volume |
22 |
Issue |
6 |
Pages |
515-523 |
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Keywords |
Animals; Arthroscopy/veterinary; Debridement/veterinary; Exudates and Transudates; Female; Femur; Follow-Up Studies; Horse Diseases/*diagnosis/radiography/surgery; Horses; Lameness, Animal/*etiology; Male; Osteochondritis/diagnosis/radiography/surgery/*veterinary; Patella; Stifle; Treatment Outcome |
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Abstract |
The clinical and radiographic progression, and arthroscopic findings for nine young horses (< 1 year of age) with femoropatellar osteochondrosis (OCD) are presented. Horses had a 2 to 12 week history of bilateral (8 horses) or unilateral (1 horse) hindlimb lameness. The most consistent clinical signs included femoropatellar joint distention and bilateral hindlimb lameness. At the onset of clinical signs, radiographic lesions were not present (4 horses) or subtle (5 horses), but were easily identified on radiographs taken 4 to 24 weeks later. Arthroscopic surgery was delayed until radiographic changes became obvious. Surgical findings in 20 femoropatellar joints were most commonly osteochondral “flaps” located on the proximal lateral trochlear ridge of the femur and were larger than had been indicated by the radiographs. Eight horses were being used for their intended purpose, which was racing (3 horses were racing and 3 were in race training), dressage (1 horse) or pleasure riding (1 horse). One horse required a second surgery when similar lesions developed on the opposite stifle, and was euthanatized 2 months later because of persistent lameness. One clinical signs are observed, osteochondrosis lesions of the distal femur can progress in foals younger than 9 months of age and the full extent of the radiographic lesion may take several weeks to develop. |
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Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, Leesburg, Virginia |
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English |
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0161-3499 |
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PMID:8116209 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3748 |
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Author |
Stadler, P.; Rewel, A.; Deegen, E. |
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Title |
[M-mode echocardiography in dressage horses, class S jumping horses and untrained horses] |
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Journal Article |
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Year |
1993 |
Publication |
Zentralblatt fur Veterinarmedizin. Reihe A |
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Zentralbl Veterinarmed A |
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Volume |
40 |
Issue |
4 |
Pages |
292-306 |
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Keywords |
Animals; Echocardiography/*veterinary; Female; Heart Septum/ultrasonography; Heart Ventricles/ultrasonography; Horses/*anatomy & histology; Male; *Physical Conditioning, Animal; Reference Values |
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Abstract |
Heart structures of 45 warmblooded horses were measured by M-mode-echocardiography. The current training level of 15 dressage horses (group I) and 15 show-jumping horses (group II) was category “S”. In the third group were 15 untrained horses. Four standardized transducer positions were determined for the m-mode echobeam, calibrated according to the two-dimensional real time technique. End systolic and end diastolic diameters of left ventricle, right ventricle, aortic root, interventricular septum and left ventricular wall, as well as motion pattern of heart wall, mitral valve and aortic valve of all horses were measured. The dressage horses showed a significant thickening of interventricular septum and left-ventricular wall compared with the show-jumping horses and the untrained horses. The end diastolic left ventricle diameter of the show-jumping horses was significantly larger than in the other groups. Compared to the untrained horses the show-jumping horses showed a significantly larger end systolic left ventricular wall diameter measured at the level of papillary muscle. It can be concluded, that an increase in heart mass in category “S” sport horses is attributed to their level of training. |
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Klinik fur Pferde der Tierarztlichen Hochschule Hannover |
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German |
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Die M-mode-Echokardiographie bei S-Dressur-, S-Springpferden und bei untrainierten Pferden |
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0514-7158 |
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PMID:8342361 |
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Equine Behaviour @ team @ |
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3749 |
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Author |
Clayton, H.M. |
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Title |
Development of conditioning programs for dressage horses based on time-motion analysis of competitions |
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Journal Article |
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Year |
1993 |
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Journal of Applied Physiology (Bethesda, Md. : 1985) |
Abbreviated Journal |
J Appl Physiol |
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74 |
Issue |
5 |
Pages |
2325-2329 |
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Animals; Horses/*physiology; *Physical Conditioning, Animal; *Sports; Statistics; Time Factors; *Time and Motion Studies; Videotape Recording |
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The time-motion characteristics of Canadian basic- and medium-level dressage competitions are described, and the results are applied in formulating sport-specific conditioning programs. One competition was analyzed at the six levels from basic 1 to medium 3. Each test was divided into a series of sequences based on the type and speed of activity. The durations of the sequences were measured from videotapes. The basic-level tests had fewer sequences, and they were shorter in distance and duration than the medium tests (P < 0.10), but the average speed did not differ between the two levels. It is recommended that horses competing at the basic levels be conditioned using 5-min exercise periods, with short (10-s) bursts of lengthened trot and canter included at basic 2 and above. In preparation for medium-level competitions, the duration of the work periods increases to 7 min, 10- to 12-s bursts of medium or extended trot and canter are included, and transitions are performed frequently to simulate the energy expenditure in overcoming inertia. |
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Department of Veterinary Anatomy, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada |
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8750-7587 |
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PMID:8335563 |
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Equine Behaviour @ team @ |
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3750 |
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Author |
Clayton, H.M. |
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Title |
The extended canter: a comparison of some kinematic variables in horses trained for dressage and for racing |
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Journal Article |
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Year |
1993 |
Publication |
Acta Anatomica |
Abbreviated Journal |
Acta Anat (Basel) |
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Volume |
146 |
Issue |
2-3 |
Pages |
183-187 |
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Animal Husbandry; Animals; *Gait; Horses/*physiology; *Physical Conditioning, Animal; *Sports |
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Abstract |
This study was designed to test the hypothesis that there is no significant difference in selected temporal and linear stride variables of the extended canter in horses bred and trained for dressage or racing. Nine advanced-level dressage horses and 7 Thoroughbred racehorses were filmed at a frame rate of 200 Hz at an extended canter on a sand track. Two strides were recorded per trial, and each horse performed 6 or 7 trials. Temporal and linear data were determined from the films, and descriptive statistics (mean, SD) were calculated. Strides were selected for analysis on the basis of having a velocity in the range of 6.0-7.0 m/s, and multivariate analysis of variance was used to detect significant differences in the stride kinematics of horses trained for the two sports (p < or = 0.01). The average velocity of the dressage horses was 6.37 m/s, compared with 6.40 m/s for the racehorses. There were no significant differences between the two groups in velocity, stride duration, stride length or the distances between limb placements. The stance durations of all four limbs and the overlaps between them were longer, whereas the duration of the suspension phase was shorter in the dressage horses than in the racehorses (p < or = 0.01). The time between impacts of the diagonal limb pair was close to zero in both groups, with individual horses showing some variability in the order of placement of the diagonal limb pair. However, the sequence of footfalls was not significantly different between the two groups (p < or = 0.01). |
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Department of Veterinary Anatomy, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada |
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0001-5180 |
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PMID:8470464 |
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Equine Behaviour @ team @ |
Serial |
3751 |
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