El_EmDubya wrote:This isn't surprising to me, or anyone with gluten issues. I joke that I can feel the "poison" at ppb, not ppm, which is why I've been reduced to an all-home-cooked diet.
The contamination issues probably have more to do with QC/safe manufacturing procedures and cross contamination rather than companies trying to make an extra buck from using soy as a protein source. I'd check the country of origin for those brands as I'd suspect the governmental regs might be one of the issues.
IloveBlu wrote:Allegedly Natural Balance has separate factories for each formula.
Sarah wrote:The Diamond plants actually make a lot of different brands. Of the many brands of pet food sold, there are only a few that are produced in their own plants. Most are made by a very few manufacturing plants, and I don't know how many, if any, are careful to avoid cross-contamination in their formulas. That's one reason I'm interested in knowing what brand it was that tested negative for soy.
dogs4jen wrote:Yeah, it doesn't say "bean free!" Maybe because it's one of the things dogs are likely to be allergic to.
ELISA testing for soy antigens in dry dog foods used in dietary elimination trials
C. Willis-Mahn*, D. Raditic*†, K. Tater*, R. Remillard*
*MSPCA Angell Animal Medical Center, Boston, Massachusetts
†University of Tennessee, Knoxville, Tennessee
Abstract: Elimination diet trials are used to determine food allergies and intolerances. Contamination of
the diet with a known food antigen, such as soy, nullifies the results of the trial whereas unintentional
contamination confounds the results. The objective of this study was to determine if: 1) four over-the-
counter (OTC) dry dog foods carrying a ‘made with no soy’ claim and 2) eight veterinary therapeutic dry
dog foods designed for food elimination trials were suitable for a canine soybean elimination trial. A 100
gram sample of each diet plus a soy foods carrying a ‘made with no soy’ claim and 2) eight veterinary
therapeutic dry dog foods designed for food elimination trials were suitable for a canine soybean
elimination trial. A 100 gram sample of each diet plus a soy positive control diet were submitted for
ELISA testing to an outside independent food laboratory. The ELISA test is quantitative for soy flour
protein concentrations between 2.5 and 25 ppm. The positive control diet contained >25 ppm soy protein
antigens. Three of the four OTC ‘no soy’ claiming diets were positive for soy antigen; two contained >25
ppm. Four veterinary therapeutic diets had less than the lower detectable limit of soy protein. Two
hydrolyzed soy diets were positive (>2.5 ppm). One veterinary therapeutic diet contained >25 ppm soy
but soybean oil was a listed ingredient and one diet contained 4.6 ppm with no soy ingredients listed.
From these results we conclude that OTC dog food diets that claim to contain ‘no soy’ may contain high
concentrations of soy protein antigen and therefore should not be considered for soy elimination trials.
The veterinary therapeutic diet chosen for a soy elimination diet trial needs to be carefully selected based
on these results.
Study funded by an ACVD and AAVD Research Award.
State conflict of interest: None declared.
Misskiwi67 wrote:They tested for soy because they had a test for it. This study had a dual purpose, because the hydrolysate diets use soy protein and there have been questions about weather this is a safe alternative for dogs who may have soy allergies. I didn't post that portion of the results because I didn't figure anyone would care. The hydrolysate prescription diets, and a limited ingredient diet with soybean oil tested positive for soy. The other limited ingredient prescription diets were found to be free of detectable levels of soy.
Canidae says on their website " Made the CANIDAE® Way with Superior Quality: No Corn, Wheat, Soy, Grain Fractions or Fillers and Naturally Preserved" If they have Soy, when none of their formulas contain soy, what else do they have in there that isn't supposed to be there? Beef? Corn?
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