eerste artikel: 
All animals were from the Veterinary College farm, where they received the same management and feeding. All animals went through 2 adaptation periods.
2e kan ik niet volledig lezen spijtig genoeg, maar:
However,  there  have  been  no  studies  carried  out  on  a sufficiently large number of horses, kept under identical conditions, to anive at a statistically-based statement about the occurrence of hoof damage and response to treatment with biotin. 
The  purpose of this  study  was  to  document  the  types  and significance  of  hoof  damage  in 6 groups  of  Austrian Lipizzaner horses kept under identical conditions and to evaluate the effect of long  term  administration of biotin  in  a  double  blind,  controlled study  in  a  largely  homogeneous  group  of  horses  kept  under identical conditions. The subjects of investigation were Lipizzaner stallions of the Spanish Riding School (SRS) in Vienna which have suffered increasingly from hoof problems,  specifically soft white lines, tender soles and crumbling and chipping along the bearing border (J. Oulehla, personal communication). The stallions of  the SRS  are  housed  and  trained  identically, therefore  constituting  a suitable group for this study.
3e artikel geen pdf beschikbaar en 4e krijg ik ook niet volledig te pakken