Take a look at the result of evaluating
Table[{x_i'[t]==ν_i [t],y_i'[t]==ω_i [t],z_i'[t]==ρ_i [t]},{i,1,n}]
In the WL underscore represents Blank. Perhaps you meant this?
Table[{x[i]'[t] == ν[i][t], y[i]'[t] == ω[i][t], z[i]'[t] == ρ[i][t]}, {i, 1, n}]
