Pen

{
  "id": "MLC-T-ENV-020461",
  "term": "Pen",
  "field": "Environment",
  "definition": "Most swine are grouped together in pens, whether kept in a shelter or in a fenced open lot. The number of animals penned together may be less than 10 to several hundred, but is normally between 15 and 30.",
  "subject": "Chemicals, toxics and pesticides",
  "references": [
    "Ag 101 Glossary of American Agriculture"
  ],
  "url": "https://mlchart.com/terminology/environment/pen/"
}