number of females that display estrus during the period. That is, all females must respond to treatment and dis-. play estrus if a 50 to 60 percent pregnancy rate is to be. achieved in a single service.
Proposal letter to building/zoning department, requesting a large variance for allowing a property fence to be built for the privacy of a home purchaser.
An electric fence is a barrier that uses electric shocks to deter animals or people from crossing a boundary. Wall top: Wall-top electric fences attach to the top of an existing perimeter barrier such as a masonry wall. 2  These are the second most common type of security electric fences. 3  The existing fence must be at least 1.5 m high.