The Board of Supervisors unanimously lifted a 14-year ban on commercial animal slaughter and expanded size limits for second units on residential properties in Marin. The changes to the development code were among a suite of others  approved on Tuesday.

Much of the three-hour hearing that preceded the supervisors’ vote, which followed a series of planning commission workshops and a planning commission hearing, was consumed by public comment on the animal slaughter proposal. 

Numerous people…