Immune parameters in horses under different housing conditions - revised version

Horses were successively subjected to two different treatments - 1. fission of a stable group, 2. relocation to single housing - and the blood numbers of various leukocytes subsets invesigated. In addition, plasma cortisol concentrations, individual rank, and number of social interactions before and after fission of the group as well as occurrence of stereotypic behavior after relocation to individual stabling was assessed.