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Author Houpt, K.A.; Fraser, A.F. url  doi
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  Title Przewalski horses Type Journal Article
  Year 1988 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 21 Issue 1-2 Pages 1-3  
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  Call Number Equine Behaviour @ team @ Serial 2302  
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Author Kirkpatrick, J. F.; Kasman, L. H.; Lasley,; B. L.; Turner, J. W. Jr. doi  openurl
  Title Pregnancy Determination in Uncaptured Feral Horses Type Journal Article
  Year 1988 Publication Journal of Wildlife Management Abbreviated Journal J Wildl Manag  
  Volume 52 Issue 2 Pages 305-308  
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  Abstract The urinary excretion of estrone sulfate ($\text{E}{1}\text{S}$) by 25 free-roaming feral horses (Equus caballus) was measured by radioimmunoassay applied to extracts of urine-soaked soil. Twelve of 15 mares having $\text{E}{1}\text{S}$ concentrations >1.0 mg/mg creatinine (x = 2.64 +- 1.02 [SD]) produced foals. All 10 mares with $\text{E}{1}\text{S}$ concentrations <1.0 mg/mg creatinine (x = 0.44 +- 0.26) did not foal. Extracting urine from soil and measuring $\text{E}{1}\text{S}$ and creatinine can be used to determine pregnancy in free-roaming feral horses without the stress of capture or immobilization.  
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  Call Number Equine Behaviour @ team @ Serial 2290  
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Author KIRKPATRICK JF et al, openurl 
  Title Pregnancy determination in uncaptured feral Horses based on steroid metabolites in urine – soaked snow and free steroids in feces Type Journal Article
  Year 1988 Publication Abbreviated Journal  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1272  
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Author Klimov, V.V. url  doi
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  Title Spatial-ethological organization of the herd of Przewalski horses (Equus przewalskii) in Askania-Nova Type Journal Article
  Year 1988 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 21 Issue 1-2 Pages 99-115  
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  Abstract The ethological structure of the herd of Przewalski horses includes hierarchic ranks of horses which determine their social roles in the herd. Besides the age ranks, the wild horses are characterized by the formation of harem groups, a “leading” group of females, a group of bachelor stallions, family groups, etc. The ethological structure determines the spatial one, which is the form of distribution of horses over the territory, and its assimilation and transformation into a system of informative spatial units. Under the influence of “internal” and “external” stimuli, the intragoup regulatory mechanims (social adaptations) manifest themselves, which allow the herd to function in the complicated situation of the reserve and allow humans to control the herd by using these mechanisms. There are grounds to believe that, given the balanced ethological structure of these groups, wild horses could be successfully acclimatized into natural biotopes.  
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  Call Number Equine Behaviour @ team @ Serial 2330  
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Author Kolter, L.; Zimmermann, W. url  doi
openurl 
  Title Social behaviour of Przewalski horses (Equus p. przewalskii) in the Cologne Zoo and its consequences for management and housing Type Journal Article
  Year 1988 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 21 Issue 1-2 Pages 117-145  
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  Abstract Between 1977 and 1986, two actual rank changes and two unsuccessful attempts occurred among the mares of the Cologne herd. The stallion was at first a low-ranking individual, but attained a dominant position during the last 3 years. At this time he started to split his group and thus to affect attachment relationships among his mares. During his absence of half a year, new bonds resulted and disappeared again some months after his return. Foals were tolerated by the sire for a long time. His behaviour to young, sub-adult mares varied with the individual. Protection of sub-adult mares by adult mares against the stallion's attacks may occur. Young mares protect and guard strange foals from their very first day. Management steps to cope with social and feeding problems consisted of enlargement and adding complexity to the enclosure, the establishment of more feeding sites, building a stable and temporary removal of the stallion.  
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  Call Number Equine Behaviour @ team @ Serial 2332  
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Author KOTERBA AM et al, openurl 
  Title Brathing strategy of the adult horse at rest Type Journal Article
  Year 1988 Publication Abbreviated Journal J Appl Physiol  
  Volume 64 Issue Pages 337-346  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1327  
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Author Penzhorn Bl, openurl 
  Title Equus zebra Type Journal Article
  Year 1988 Publication Mammalian Species Abbreviated Journal Mammalian Species  
  Volume 314 Issue Pages 1-7  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1460  
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Author Ryder, O.A.; Massena, R. doi  openurl
  Title A case of male infanticide in Equus przewalskii Type Journal Article
  Year 1988 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 21 Issue 1-2 Pages 187-190  
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  Abstract Following the introduction of a new stallion to a band of E. przewalskii mares two births, both of male foals, resulted in foal death due to injuries sustained in the first day of life. Neither foal was sired by the new herd stallion. The second foal death was the results of an observed attack on the newborn male and is described here. Subsequently births in the same enclosure and, in one instance, to the same mare whose previous foal was killed, were of foals sired by the new stallion and were uneventful, with 3 male foals surviving to date.  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1539  
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Author Schilder, M.B.H. doi  openurl
  Title Dominance relationships between adult Plains zebra stallions in semi – captivity Type Journal Article
  Year 1988 Publication Behaviour Abbreviated Journal Behaviour  
  Volume 104 Issue 3-4 Pages 300-319  
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  Abstract The relationships between 4-5 adult zebra stallions, living in a safari park, were investigated over a period of 5 years. Asymmetries in the distributions of a number of behaviours could be explained by adopting dominance as an intervening variable. Dominance in stallions was of a bipolar nature with on the one hand behaviours representing subordinance and defence, and on the other hand behaviours reinforcing and confirming dominance. Expression of formal dominance seems to play a minor role. The dyadic relationships of stallions differed as to the number of behaviours reflecting dominance relationships. Although often linear rank-orders could be constructed, these rank-orders were not necessarily identical. This means that the concept of dominance is of only limited value for describing relationships between zebra stallions.  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1564  
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Author Smielowski, J. openurl 
  Title Breeding of the Grevy's Zebra at Polish zoological gardens Type Journal Article
  Year 1988 Publication Abbreviated Journal Przeglad Zool  
  Volume 32 Issue Pages 595-597  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1608  
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