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Canine Food Allergy Testing

Source: www.animal-allergy.com
Topic: Animals
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Sort Desciption: ... most food allergies affecting ... co-exist with other allergies, particularly flea allergy. ... Email tlc@animal-allergy.com. 3.ix. YTVS Test description ...

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Canine Food Allergy Testing 1 Canine Food Allergy Testing 3.i What is food allergy? It is generally recognized that at some point in their lives most dogs will suffer from an adverse reaction to a dietary component (Guilford, 1994). For the majority of these, the condition is mild and self-limiting and of little concern. However, a small number of dogs will show an ongoing or recurrent sensitivity to their diet requiring veterinary intervention. Within this group, two major sub- groups may be distinguished: Food Intolerance: where the reaction is caused by some metabolic disorder (for example, lactose intolerance), pharmacological action of the foodstuff or toxicity due to a food contaminant, Food Allergy or Hypersensitivity: where the reaction is mediated through an immune mechanism. Diagnosis of an adverse reaction to food is usually confirmed through the response to an exclusion or hypoallergenic diet (Rosser, 1993). Although a wide range of commercial hypoallergenic diets are available, it is generally agreed that the most effective method of diagnosing an adverse reaction to food is through the response to a home prepared elimination or hypoallergenic diet followed by test meal challenge (Strombeck & Guilford 1991, Leistra et al, 2001). A positive response to an exclusion diet followed by a relapse upon challenge indicates food allergy or intolerance. Dietary trials are by their nature protracted and owner compliance can be poor if the benefits are not rapidly apparent. For optimal patient management the correct identification of allergenic foodstuffs may be desirable (Halliwell, 1992). An in vitro diagnostic test for food allergy can therefore be useful in this regard. In the majority of normal dogs, effective mechanisms exist to suppress inappropriate immune responses to harmless dietary antigens, resulting in a state of true immunological unresponsiveness or tolerance (Ellwood and Gardner, 1999). However, in a small number of dogs these tolerance mechan ...

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