The growth of factory hog

farms in Iowa led to an

explosion in the number

of hogs sold per farm ...

9,692

5,398

486 hogs

sold per farm

1982

2007

2017

... while the number of

hog farms dropped 90%

49,012

hog farms

8,758

6,221

1982

2007

2017

The growth of factory hog farms in

Iowa led to an explosion in the number

of hogs sold per farm ...

9,692

5,398

486 hogs

sold per farm

1982

2007

2017

... while the number of

hog farms dropped 90%

49,012

hog farms

8,758

6,221

1982

2007

2017

The growth of factory hog

farms in Iowa led to an

explosion in the number

of hogs sold per farm ...

... while the number of

hog farms dropped 90%

49,012

hog farms

9,692

5,398

8,758

486 hogs

sold per farm

6,221

1982

2007

2017

1982

2007

2017

The growth of factory hog

farms in Iowa led to an

explosion in the number

of hogs sold per farm ...

... while the number of

hog farms dropped 90%

49,012

hog farms

9,692

5,398

8,758

486 hogs

sold per farm

6,221

1982

2007

2017

1982

2007

2017