Section 90-A. Declaration of policy and purposes

Infectious  and
  communicable disease affecting domestic animals continues  to  exist  in
  this  state,  and the existence thereof endangers the health and welfare
  of the people of  the  state.  Despite  the  moneys  spent  to  control,
  suppress  and  eradicate such infection and disease its incidence is the
  concern of the legislature. The powers of  quarantine  and  condemnation
  held  and exercised by the department of agriculture and markets tend to
  suppress but do  not  constitute  an  adequate  control.  It  is  hereby
  declared  to  be  a  matter  of  legislative  determination  that a more
  exacting supervision of those who as a  business  deal  in,  handle  and
  transport  domestic animals is needed in the public interest and that in
  the exercise of the police power such persons  be  required  to  hold  a
  permit before engaging in such activities.