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Kolter L,. (1984). Soziale Beziehungen zwischen Pferden und deren Auswirkungen auf die Aktivität bei Gruppenhaltung.
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Penzhorn Bl,. (1984). Dental abnormalities in free – ranging Cape mountain zebras. J Wildl Dis, 20, 161–166.
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Penzhorn Bl,. (1984). Observations on mortality of free – ranging Cape mountain zebras. S Afr Wildl Res, 14, 89–90.
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Reichholf J,. (1984). Funktion und evolution des Streifenmusters bei den zebras. Säugetierk Mitt, 32, 89–95.
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SCHILDER MBH et al,. (1984). A quantitative analysis of facial expressions in the plains zebra. Z. Tierpsychol., 66, 11–32.
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Ralston, S. L. (1984). Controls of feeding in horses. J. Anim Sci., 59(5), 1354–1361.
Abstract: Members of the genus Equus are large, nonruminant herbivores. These animals utilize the products of both enzymatic digestion in the small intestine and bacterial fermentation (volatile fatty acids) in the cecum and large colon as sources of metabolizable energy. Equine animals rely primarily upon oropharyngeal and external stimuli to control the size and duration of an isolated meal. Meal frequency, however, is regulated by stimuli generated by the presence and (or) absorption of nutrients (sugars, fatty acids, protein) in both the large and small intestine plus metabolic cues reflecting body energy stores. The control of feeding in this species reflects its evolutionary development in an environment which selected for consumption of small, frequent meals of a variety of forages.
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