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Author Petherick, J.C.; Rutter, S.M. url  doi
openurl 
  Title Quantifying motivation using a computer-controlled push-door Type (up) Journal Article
  Year 1990 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 27 Issue 1 Pages 159-167  
  Keywords  
  Abstract A computer-controlled push-door system was designed and tested as a method for measuring motivation. Eleven domestic hens were trained to use the push-door to gain access to food. They were deprived of food for 12 h or 43 h on 12 occasions and the push-door was used to measure the amount of “work” (measured as force × time) that they performed to gain access to a food reward. When deprived of food for 12 h the hens took significantly longer (P<0.01) to reach the required threshold of work, than when deprived for 43 h. This difference arose from the amount of time that the hens spent not pushing at the door. The problems encountered with this system and such an approach to measuring motivation are discussed.  
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  ISSN 0168-1591 ISBN Medium  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6165  
Permanent link to this record
 
 
Author Tooze, Z.J.; Harrington, F.H.; Fentress, J.C. url  doi
openurl 
  Title Individually distinct vocalizations in timber wolves, Canis lupus Type (up) Journal Article
  Year 1990 Publication Anim Behav Abbreviated Journal  
  Volume 40 Issue Pages  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Tooze1990 Serial 6468  
Permanent link to this record
 
 
Author Rau R.E., openurl 
  Title Bring back the quagga Type (up) Manuscript
  Year 1990 Publication Abbreviated Journal  
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  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1501  
Permanent link to this record
 
 
Author Schilder, M.B.H. openurl 
  Title Social behaviour and social arganization of a herd of plains zebra in a safari park Type (up) Manuscript
  Year 1990 Publication Abbreviated Journal  
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  Corporate Author Thesis Ph.D. thesis  
  Publisher Place of Publication University of Utrecht Editor  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1566  
Permanent link to this record
 
 
Author Würbel, H. openurl 
  Title The relationship between social structure and mating system in donkeys & Mating strategies of male donkeys in a promiscuous mating system"l structure and mating system in donkeys & Type (up) Manuscript
  Year 1990 Publication Abbreviated Journal  
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  Corporate Author Thesis Diploma thesis  
  Publisher Place of Publication Faculty of Natural Sciences, University of Berne, Switzerland Editor  
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  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1724  
Permanent link to this record
 
 
Author Cheney, D.L.; Seyfarth, R.M. openurl 
  Title How Monkeys See the World Type (up) Miscellaneous
  Year 1990 Publication Abbreviated Journal  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4866  
Permanent link to this record
 
 
Author Cords, M. openurl 
  Title 13th Cong. Int. Primat Soc Type (up) Miscellaneous
  Year 1990 Publication Abbreviated Journal  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4925  
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