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Eisenmann V,. (1976). Le protostylide: valeur systématique et signification phylétique chez les espèces actuelles et fossiles du genre Equus. Z Säugetierk, 41, 349–365.
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Strayer, F. F. (1976). Learning and imitation as a function of social status in macaque monkeys (Macaca nemestrina). Anim. Behav., 24(4), 835–848.
Abstract: Learning and imitation were examined in animals selected from two groups of sixteen pigtail monkeys. There were significant differences in performance on a cued-alternation task as a function of both social status within the stable group, and prior exposure to a social model. High status animals responded more frequently, but were less successful in acquiring appropriate response delay. Exposure to the model improved response latencies and acquisition of response delay for all subjects. However, model exposure did not improve alternation performance. Results are discussed in terms of prior social experience of the subjects, general learning strategies, and differential sensitivity to multiple reinforcement contingencies. Findings are related to ethological concepts of imitation, and field reports on primate social learning.
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Smuts Gl,. (1976). Population characteristics of Burchell's Zebra in the Krüger National Park. S Afr J Wildl Res, 6, 99–112.
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Ngethe Jc,. (1976). Preference and daily intake of five east african grasses by zebras. J Range Mgmt, 29, 510.
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Joubert, E., & Louw, G. N. (1976). Preliminary observations on the digestive and renal efficiency of Hartmann's zebra Equus zebra hartmannae. Madoqua, 10, 119–121.
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Clutton-Brock, T. H., Greenwood, P. J., & Powell, R. P. (1976). Ranks and relationships in Highland ponies and Highland Cows. Z. Tierpsychol., 41(2), 202–216.
Abstract: Recent studies of primates have questioned the importance of dominance hierarchies in groups living under natural conditions. In a herd of Highland ponies and one of Highland cattle grazing under free-range conditions on the Isle of Rhum (Inner Hebrides) well defined hierarchies were present. The provision of food produced a marked increase in the frequency of agonistic interactions but had no effect on the rank systems of the two herds. While rank was clearly important in affecting the distribution of agonistic interactions, it was poorly related to behaviour in non-agonistic situations.
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Smuts Gl,. (1976). Reproduction in the zebra mare from Krüger National Park. Koedoe, 19, 89–132.
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Smuts Gl,. (1976). Reproduction in the zebra stallion from the Krüger National Park. Zool Afr, 11, 207–220.
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Keiper, R. (1976). Social organization of feral ponies. Proc Pennsyl Acad Sci, 50, 69–70.
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Brown, R. F., Houpt, K. A., & Schryver, H. F. (1976). Stimulation of food intake in horses by diazepam and promazine. Pharmacol Biochem Behav, 5(4), 495–497.
Abstract: In two adult horses doses of 0.02-0.03 mg/kg diazepam, intravenously, increased 1 hr intake 54-75% above control levels. Intake was stimulated when the diet was a high grain, calorically dense one and also when the diet was a high fiber, calorically dilute one. Two young rapidly growing weanling horses showed an even more pronounced stimulation of intake. Following diazepam 1 hr intake was increased 105-240% above control lelvels. Promazine at a dose of 0.5 mg/kg also stimulated intake in adult horses, but not as markedly as did diazepam. A transquilizer and a neuroleptic appear to have a stimulatory eff upon short-term intake in horses.
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