On the section on shad, it seems to say shad can be harvested April 1 thru June 30 in Connecticut river and those portions of its tributaries open to fishing throughout the year. That looks to me like the lower Farmington River remains open to shad fishing.
On another note for the striper fisherman, there is no mention of the alewife/herring moratorium that expires 3-15-15 being extended. If I read this pdf release correctly: in the main body of the Connecticut River, limit will be 25 fish by angling, snagging, snatching or scoop net. Scoop net fishing open April 1 thru June 15. Angling and snagging open 2nd Saturday April 11 6AM thru June 15. Same rules apply in the lower Farmington River, except alewife/herring fishing closed Sunday and Monday.