Oral supplementation with L-lysine did not prevent upper respiratory infection in a shelter population of cats |
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| Authors: | Rees Tina M Lubinski Janet L |
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| Institution: | Humane Society of Indianapolis, 7929 N Michigan Road, Indianapolis, IN 46268, USA. trees@indyhumane.org |
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| Abstract: | Cats in animal shelters are highly susceptible to infection by feline herpesvirus (FHV) by virtue of their stress and close proximity to other cats. Animal shelters take several different approaches to prevent FHV-related upper respiratory infections (URIs), including empirically treating all cats with L-lysine, a supplement believed to prevent the replication of FHV and, therefore, manifestations of herpesvirus infections. In this study we tested oral supplementation of L-lysine as a means to prevent URIs. One hundred and forty-four cats were treated with L-lysine in a small amount of canned food once daily. A 'no treatment' group of 147 cats received no lysine during the course of the study. The development of conjunctivitis or URI was tracked between the two groups. In all measures, there was no effect between the two groups, suggesting that lysine was not able to prevent URI or conjunctivitis in our shelter situation. Cats entering shelters encounter stressors that may make them more susceptible to FHV reactivation or infection. Infection control and control of fomite transmission are also key to keeping cats healthy in a group housing situation. The finding that lysine did not prevent URI in this animal shelter suggests that shelters may better use their resources by finding ways to decrease stress among their feline population, focusing on proper infection control measures, and limiting fomite transmission of disease. |
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