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Author  |
Kaseda, Y.; K. Nozawa, K. |
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Title |
Father-daughter matings and its avoidance in Misaki feral horses |
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Journal Article |
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Year |
1996 |
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Animal Science and Technology |
Abbreviated Journal |
Anim Sci Tech |
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67 |
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11 |
Pages |
996-1002 |
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Abstract |
Father-daughter matings and its avoidance mechanism were analysed on the basis of data which gained from behavioural observations and paternity tests in Misaki feral horses from 1979 to 1994. Twelve stallions and their 51 daughters had 176 breeding seasons, but they lived in the different home range in 82 breeding seasons. About half of 1- to 3-year-old mares emigrated from natal area to the other and grew up there. Therefore, emigrations of young mares may result reduction of contacts and avoidance of inbreeding with their fathers. The stallions and their daughters lived in the same area in 94 breeding seasons, but there were no cases that daughters which left their natal harem groups before sexual maturity formed again stable consort relations with their natal harem stallions. It is possible that separation of young mares from their natal groups before sexual maturity may result avoidance of formation of consort relation with their fathers. Two father-daughter matings were observed in 124 paternity tests. These two daughters were born in the other harem groups than their father's and left their natal groups before maturity. After maturity, one of them formed a stable consort relation with her father and the other remained together with her father for 2 months in the breeding season. Both of them had not experience to have lived with their fathers before maturity. The persent result supports the hypothesis in wild and semi-wild horses that inbreedings between fathers and daughters may be avioded by the experience to have lived together before sexual maturity. |
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0918-2365. |
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Equine Behaviour @ team @ |
Serial |
2307 |
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Author |
Kedzierski, W.; Wilk, I.; Janczarek, I. |
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Title |
Physiological response to the first saddling and first mounting of horses: comparison of two sympathetic training methods |
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Journal Article |
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Year |
2014 |
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Animal Science Papers and Reports |
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32 |
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3 |
Pages |
219-228 |
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cortisol / emotional reaction/ horses / natural training / stress |
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There is not much research done on the influence of sympathetic training on the emotional reaction
of horses. The aim of the present study was to evaluate the emotional response and the stress level
in horses to two sympathetic training methods: (1) with the use of the “round pen technique” (RP),
and (2) in which the RP was not applied (SH). Twenty two half-bred Anglo-Arab horses (2.5
years ±3 months of age) were subject to an initial training. Eleven horses were randomly included
to the RP method and the other 11 horses for the SH method. Heart rate (HR) and saliva cortisol
concentration were measured as indicators of horse emotional arousal and stress level, respectively.
The HR values were analysed: at rest, during the habituation period, just after the first saddling
and tightening of the girth, during the first time a human leaned over the horse’s back, and during
the mounting of the horse. Saliva samples were taken before and 15 min after each training session
studied. After saddling, the HR occurred significantly higher when the RP technique was used. The
significant increase in saliva cortisol concentration was observed only after the first mounting of
the horse. Generally, the use of the RP technique did not involve more important physiological
reactions in the trained horses than did the SH method. |
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Equine Behaviour @ team @ |
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5816 |
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Author |
Kendrick, K.M. |
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Title |
How the sheep's brain controls the visual recognition of animals and humans |
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1991 |
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Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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69 |
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12 |
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5008-5016 |
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Equine Behaviour @ team @ |
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2940 |
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Author |
Kimura, R. |
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Title |
Volatile substances in feces, urine and urine-marked feces of feral horses |
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Journal Article |
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Year |
2001 |
Publication |
Canadian Journal of Animal Science |
Abbreviated Journal |
Can. J. Anim. Sci. |
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81 |
Issue |
3 |
Pages |
411-420 |
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Keywords |
Odors (volatile), excrement, scent-marking, masking, horse (feral), (releaser) pheromone |
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The identity and amount of volatile substances in the feces, urine and feces scent-marked with urine (i.e., feces mixed with urine) of feral horses was determined by acid/steam distillation and gas chromatography-mass spectrometry. The frequency of excretion and scent marking, as evaluated in the breeding and non-breeding seasons, showed clear evidence of seasonal behavioral differences. The concentration of each substance (fatty acids, alcohols, aldehydes, phenols, amines and alkanes) in the feces differed according to maturity, sex and stage in the reproductive process. They had a characteristic chemical fingerprint. Although the levels of tetradecanoic and hexadecanoic acids in the feces of estrous mares were significantly higher than the respective levels in the feces of non-estrous mares, in the case of scent-marked feces by stallions, the levels of them in the feces from estrous mares had decreased to levels similar to those in non-estrous mares. The concentration of these substances in mares were not significantly different. The presence of a high concentration of cresols in the urine of stallions in the breeding season suggests that one role of scent marking by stallions is masking the odor of the feces produced by mares. |
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0008-3984 |
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Equine Museum of Japan, 1-3 Negishidai, Nakaku, Yokohama 231, Japan (hidousch@alles.or.jp) |
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Equine Behaviour @ team @ |
Serial |
2314 |
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Author |
Kratzer, D.D.; Netherland, W.M.; Pulse, R.E.; Baker, J.P. |
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Title |
Maze Learning in Quarter Horses |
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Journal Article |
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Year |
1977 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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45 |
Issue |
4 |
Pages |
896-902 |
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A two-compartment maze providing a single left- or right-side choice was used to test maze-learning ability in 37 quarter horses. Preference for left- or right-side choices varied among the horses. The taller and thinner horses tended to go left. The horses showed learning ability based on decreases in latency and decreases in errors as trials progressed in a right-side escape pattern. The rate of learning an opposite escape pattern, left-side escape, was faster but owing to the large number of errors occurring when the pattern was reversed, the level of errors did not reduce to a level comparable to that achieved in the right-side escape pattern until adverse stimuli were presented in the blind compartment. Heavier horses took longer to escape from the maze when adverse stimuli were presented. Differences in learning ability for horses fed various levels of dietary protein were not consistent. N1 - |
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Equine Behaviour @ team @ |
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3574 |
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Author |
Krzak, W.E.; Gonyou, H.W.; Lawrence, L.M. |
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Title |
Wood chewing by stabled horses: diurnal pattern and effects of exercise |
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Journal Article |
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Year |
1991 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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69 |
Issue |
3 |
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1053-1058 |
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Keywords |
Animal Feed; Animals; *Behavior, Animal; *Circadian Rhythm; Female; Horses/*physiology; Male; *Mastication; *Physical Conditioning, Animal; Sodium Chloride/administration & dosage; Videotape Recording; Wood |
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Nine yearling horses, stabled in individual stalls, were used in a trial to determine the diurnal pattern of wood chewing and the effects of exercise on this behavior. The trial was a Latin square design conducted over three 2-wk periods during which each horse was exposed to each of the three following treatments: 1) no exercise (NE), 2) exercise after the morning feeding (AM), and 3) exercise in the afternoon (PM). Horses were fed a complete pelleted feed in the morning and both pelleted feed and long-stemmed hay in the afternoon. Exercise consisted of 45 min on a mechanical walker followed by 45 min in a paddock with bare soil. Each stall was equipped with two untreated spruce boards during each period for wood chewing. Wood chewing was evaluated by videotaping each horse for 22 h during each period, determining the weight and volume of the boards before and after each period, and by visual appraisal of the boards. Intake of trace mineralized salt was also measured. Wood chewing occurred primarily between 2200 and 1200. All measures of wood chewing were correlated when totals for the entire 6 wk were analyzed. When analysis was performed on 2-wk values, videotape results were not correlated with volume or weight loss of boards. Horses chewed more when on the NE treatment (511 s/d) than when on AM or PM (57 and 136 s/d, respectively; P less than .05). Salt intake tended to be greater for NE than for the other treatments (P less than .10).(ABSTRACT TRUNCATED AT 250 WORDS) |
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Dept. of Anim. Sci., University of Illinois, Urbana 61801 |
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0021-8812 |
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PMID:2061237 |
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refbase @ user @ |
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1949 |
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Lanier, J.L.; Grandin, T.; Green, R.D.; Avery, D.; McGee, K. |
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The relationship between reaction to sudden, intermittent movements and sounds and temperament |
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Journal Article |
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2000 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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78 |
Issue |
6 |
Pages |
1467-1474 |
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N1 - |
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Equine Behaviour @ team @ |
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2945 |
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Author |
Mader, D.R.; Price, E.O. |
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Discrimination learning in horses: effects of breed, age and social dominance |
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1980 |
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Journal of animal science |
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J. Anim Sci. |
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50 |
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5 |
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962-965 |
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Aging; Animals; *Discrimination Learning; Female; Horses/*physiology; *Social Dominance |
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The discrimination learning ability of Quarter Horses and Thoroughbreds was compared by means of visual cues in a three-choice test with food as a reward. Quarter Horses learned significantly faster than Thoroughbreds, and learning progressed more rapidly for both breeds in a second discrimination task. Significant negative correlations were observed between age and rate of learning. Quarter Horses tended to be less reactive than Thoroughbreds, but individual emotional reactivity ratings and learning scores were not correlated. No correlation was found between social dominance and learning scores. Learning studies with horses may provide a better understanding of the behavioral traits that influence trainability in this species. |
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0021-8812 |
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PMID:7390949 |
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refbase @ user @ |
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679 |
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Marc, M.; Parvizi, N.; Ellendorff, F.; Kallweit, E.; Elsaesser, F. |
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Plasma cortisol and ACTH concentrations in the warmblood horse in response to a standardized treadmill exercise test as physiological markers for evaluation of training status |
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Journal Article |
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2000 |
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Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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78 |
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7 |
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1936-1946 |
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Adrenocorticotropic Hormone/*blood/diagnostic use; Animals; Catheterization/veterinary; Exercise Test; Horses/*blood; Hydrocortisone/*blood; Male; *Physical Conditioning, Animal |
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Reliable physiological markers for performance evaluation in sport horses are missing. To determine the diagnostic value of plasma ACTH and cortisol measurements in the warmblood horse, 10 initially 3-yr-old geldings of the Hannovarian breed were either exposed to a training schedule or served as controls. During experimental Phase 1, horses were group-housed, and half of the horses were trained for 20 wk on a high-speed treadmill. During Phase 2, groups were switched and one group was trained for 10 wk as during Phase 1, whereas the control group was confined to boxes. During Phase 3 horses were initially schooled for riding. Thereafter, all horses were regularly schooled for dressage and jumping, and half of the horses received an additional endurance training for 24 wk. During all phases horses were exposed at regular intervals to various standardized treadmill exercise tests. During and after the tests frequent blood samples were taken from an indwelling jugular catheter for determination of ACTH and cortisol. Treadmill exercise increased both hormones. Maximum ACTH concentrations were recorded at the end of exercise, and maximum cortisol levels were recorded 20 to 30 min later. Except for one test there were no differences in ACTH levels between trained horses and controls. There was no significant effect of training on the cortisol response (net increase) to treadmill exercise in any of the tests during Phase 1. During Phase 2 higher cortisol responses were recorded in controls than in trained horses (P < .05) after 10 wk of training (controls confined to boxes). During Phase 3 plasma cortisol responses were also higher in controls than in trained horses (P < .05 after 6, 18, and 24, P < or = .07 after 12 wk of training) when the inclination of the treadmill was 5%, but not at 3%. There was no overlap in net cortisol responses at 30 min between trained and untrained horses. An ACTH application after 24 wk of training resulted in higher cortisol responses in controls than in trained horses (P < or = .05), without any overlap between the groups at 30 min after ACTH. Plasma cortisol responses to either treadmill exercise or ACTH injection may be a reliable physiological marker for performance evaluation. Prerequisites are sufficient differences in training status and sufficient intensity of exercise test conditions. |
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Institute of Animal Science and Animal Behaviour, Federal Agricultural Research Center (FAL) Mariensee, Neustadt, Germany |
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0021-8812 |
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PMID:10907837 |
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Equine Behaviour @ team @ |
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3732 |
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Marshall, T.T.; Hoover, T.S.; Reiling, B.A.; Downs, K.M. |
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Experiential learning in the animal sciences: effect of 13 years of a beef cattle management practicum |
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Journal Article |
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1998 |
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Journal of Animal Science |
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J. Anim Sci. |
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76 |
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11 |
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2947-2952 |
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Equine Behaviour @ team @ |
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2938 |
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