Black Walnut induced laminitis in horses

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Hi All,

 

Have any of you come across pedal irritation / laminitis in animals

bedded on Black Walnut shavings? See below.

 

Best regards,

Phil

 

------- Forwarded message follows -------

Date sent: Tue, 28 Jun 2005 12:51:06 -0400

" Beverly McEwen " <BMcewen

Black Walnut induced laminitis in horses

 

A stable of about 50 horses was exposed to black walnut that was

mixed with other shavings for about 2 days. Some have developed

severe laminitis, all feet, others have edema of the distal limbs (fore

and/or hind) and mild-moderate laminitis. A litigation suit is likely.

 

-Is there anyone that can identify the toxic principle (is it juglone or a

quinone) in shavings?

 

-Are removal of the shavings and washing of the stalls sufficient to

remove the toxin (are there any oils that might persist in the

environment)?

 

-Any updates on pathogenesis?

 

Many thanks,

Beverly McEwen DVM, MSc, PhD, Diplomate ACVP

Veterinary Pathologist & Animal Disease Surveillance

Animal Health Laboratory

Box 3612

Building 49, Ontario Veterinary College,

McIntosh Lane,

University of Guelph, Guelph, Ontario

N1H 6R8

Phone: 519-824-4120 ext 54537

Fax: 519-821-8072

 

 

------- End of forwarded message -------Best regards,

 

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