Background
• Domesticated miniature swine
• Sinclair acquired the micro-Yucatan colony from Charles River Laboratories (CRL).

Origin
• The micro-Yucatan have the same origin as the Yucatan miniature swine.
• 25 animals imported into the United States in 1960.
• Developed at Colorado State University with funding from the Kroc Foundation.
• Introduction of a small Yucatan boar from Thompson Research to the CSU breeding program
resulting in “Martha”, the first micro-sized Yucatan.
• CRL assumed the breeding of the micro-Yucatan in 1985
• Sinclair assumed production of the colony in 2002.
• The colony is located in Windham, ME.
• The colony is closed and fully pedigreed.

Characteristics
• Purpose-bred, socialized and vaccinated.
• Darkly pigmented skin with little or no hair.
• Ventriculat Septal Defect (VSD) spontaneous model available.
• Free from common domestic swine diseases; e.g. leptospirosis, brucellosis, pseudorabies, trans-
missible gastroenteritis, porcine reproductive respiratory syndrome, influenza, toxoplasmosis, etc.
• Particularly known for their docile temperament and ease of handling.
• Well adapted to the laboratory environment and very useful when only limited space is available.

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