Techni-vector-meson dominance andW-,Z-boson properties

We consider a class of technicolor models in which techni-vector mesons are incorporated in analogy to vector-meson dominance in QCD. Modifications to standard-model results on $W$- and $Z$-boson properties are used to constrain some of the technicolor parameters. We also point out that even in the presence of a custodial symmetry, the relationship $\frac{M_W^2}{M_Z^2{cos}^2\theta }=1\mathrm{}$ is modified while the $\rho$ parameter defined in terms of the neutral-to-charged-current ratio is not.