Re: Better idea
Yes, disease can be a problem. But it is a problem for other animals as well.
As you mention disease, how about the link between humans living in extended and close proximity to poultry and flu outbreaks? admittedly, avian flu normally requires pigs to be present as intermediary hosts before humans get infected with nastier variants, but ISTR the last couple of outbreaks were direct chicken->human, so probably not the sort of scheme you want to set up in countries with existing major health problems, and the lack of infrastructure to deal with potential future ones.
Advocating 'wider chicken ownership' in areas where there is 'widespread poverty' seems to be going against current 'accepted wisdom' regarding Flu pandemic prevention.