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Nitschelm D, H. V. D. C. (1977). The influence of chlormadinone acetate treatment on the concentration of some stereoids in the blood, on the ovarian activity, and on the sexual behaviour of the.. Tijdschr Diergeneesk, 102, 61–872.
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Olsen Fw, H. R. (1977). Food relations of wild free – roaming horses to livestock and big game, Red Desert, Wyoming. J Range Mgmt, 30, 17–20.
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Potter Rl, H. R. (1979). Feral burro food habits and habitat relations, Grand Canyon National Park, Arizona. Symposium on the Ecology and Behavior of wild and feral Equids, Laramie, , 143–157.
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Salter Re, H. J. (1978). Habitat utilization by feral horses in western Alberta. Naturaliste can., 105, 309–321.
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Salter Re, H. J. (1980). Range relationships of feral horses with wild ungulates and cattle in western Alberta. J Range Mgmt, 33, 266–271.
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Robinson, H. C. (2007). Equine interspecies aggression (Vol. 160).
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Slagsvold, T., & Viljugrein, H. (1999). Mate choice copying versus preference for actively displaying males by female pied flycatchers. Anim. Behav., 57(3), 679–686.
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Klingel, H. (1982). Social organization of feral horses. J Reprod Fertil Suppl, 32, 89–95.
Abstract: The basic social unit in feral horses is the family group consisting of one stallion, one to a few unrelated mares and their foals. Surplus stallions associate in bachelor groups. Stallions are instrumental in bringing mares together in a unit which then persists even without a stallion. The similarity of social organization in populations living in a variety of different habitats indicates that feral horses have reverted to the habits of their wild ancestors, and that domestication has had no influence on this basic behavioural feature.
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van Niekerk, H. P. (1980). Ethological studies within the man-horse relationship. J S Afr Vet Assoc, 51(4), 237–238.
Abstract: Certain aspects of ethology and the horse's senses are discussed to bring about a better understanding between man and horse. Furthermore the behaviour of horses with respect to housing, feeding, breeding, veterinary treatment and work are considered.
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Caanitz, H., O'Leary, L., Houpt, K., Petersson, K., & Hintz, H. (1991). Effect of exercise on equine behavior. Appl. Anim. Behav. Sci., 31(1-2), 1–12.
Abstract: The effect of short periods of strenuous exertion, in this case treadmill exercise, on the subsequent behavior of Standardbred horses was examined. Six horses were exercised on a high-speed treadmill 4 or 5 days per week, for 3-4 miles (approximately 1.8 m s-1 for 3 min, 5 m s-1 for 12 min, 9 m s-1 for 3 min, 3 m s-1 for 3 min, 1.8 m s-1 for 3 min). The behavior of the horses was observed in the horse's home stall immediately after exercise and 2-7 h after exercise. Focal animal sampling for a total of 150 h revealed that the horses spent significantly more time drinking and less time resting after exercise than they did on control (non-exercise or rest days). The greatest influence on behavior was seen immediately after exercise. The horses spent 13.2+/-2.7 s per 15 min drinking after exercise and 7.2+/-2.3 s per 15 min drinking on non-exercise days. They spent 7.3+/-1.5 min h-1 stand resting after exercise and 9.7+/-2.1 min h-1 on non-exercise days. These changes in behavior may be related to the physiological changes that accompany exercise. Eating, walking, elimination and self-grooming were not significantly influenced by exercise. In a second experiment the activities of two groups of six Standardbred mares were compared. One group was exercised on the treadmill and the other was not. The exercised horses spent more time drinking and lying, but urinated less than the non-exercised group.
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