In Texas, WT deer bag limits are regulated by the
state AND each county.
The state issues tags on hunting licenses that
allow the taking of up to 5, each tag marked either
"Antlerless Only" (2) or "Buck or Antlerless" (3).

Each county restricts the bag limit of WT taken
within that county.
Example:
Archery Only: October 2-November 5, 2010. No permit required to hunt antlerless deer unless MLD permits have been issued for the property.
Bag Limit: 4 deer, no more than 2 bucks, and no more than 2 antlerless, all seasons combined.
General Season: November 6, 2010-January 2, 2011. Antlerless deer may be taken by antlerless MLD permit or LAMPS permit only. Special Youth-Only Season: Early open season: October 30-31, 2010. Late open season: January 3-16, 2011.

or

Archery Only: October 2-November 5, 2010. No permit required to hunt antlerless deer unless MLD permits have been issued for the property.
Bag Limit: 5 deer, no more than 2 bucks, all seasons combined. General Season: November 6, 2010-January 2, 2011. No permit is required to hunt antlerless deer unless MLDP antlerless permits have been issued for the tract of land.
Special late general season: January 3-16, 2011. Antlerless and Spike deer only.
Special Youth-Only Season: Early open season: October 30-31, 2010. Late open season: January 3-16, 2011.

Likes been said already, special permits are common and could have been issued, who knows.
But putting up a fence DOES NOT give anyone
legal right to kill as many WT deer as they want.