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DIETARY ANTIOXIDANT SUPPLEMENTATION IMPROVES IMMUNE CELL ACTIVITY AND ANTIBODY PRODUCTION IN THE PUPPY

Massimino SP, Hayek MG, Ceddia MA, et al.

Objective: Dietary antioxidant supplementation on immune function in puppies was studied.

Design: Randomized block design, balanced for litter and gender.

Materials and Methods: Weaning beagle puppies (6 weeks of age) were randomly assigned to a control diet (CON; n=20) or antioxidant diet (ATX; n=20), and fed for 4 months with immune assessment done after 0, 2 and 4 months of feeding. Diet matrices were identical, however ATX contained 200 IU/kg vitamin E, 20mg/kg lutein and 20mg/kg ß-carotene as antioxidants.

Results: Mitogenic responses to Concanavalin A, Phytohemagglutinin, and Pokeweed mitogen were significantly (p<0.05) higher in ATX verses CON at 2 and 4 months of feeding. After 4 months feeding, ATX had significantly (p<0.05) higher vaccine titers to distemper and parvovirus. ATX produced significantly (p<0.05) more immunoglobulin M to a sheep red blood cell challenge versus CON.

Conclusion: Beagle puppies fed a diet supplemented with antioxidants had improved immune cell activity and antibody production.

Funding provided by The Iams Company, Lewisburg, OH.


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