РПаЎ±б>юя :<юяяя;яяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяяямҐБ` рї<bjbjЛsЛs њ.©©Тiяяяяяя¤ВВВВВВВ4J”ВВВh*>$Ю;¶nnnnnnnnєјјјјјј$сhYўаВnnnnnаВВnnхћћћnВnВnєћnєћћВВћnb`оТz[ЗВ~ћє0;ћыЋыћыВћnnћnnnnnааЋnnn;nnnnЮЮЮдВЮЮЮВц$,FВВВВВВяяяя CONSUMPTION OF ESSENTIAL FATTY ACIDS IN SELECTED COMMERCIAL DOG FOODS COMPARED TO DIETARY SUPPLEMENTATION Roudebush P1, Bloom PB2, Jewell DJ1 1Hill’s Science & Technology Center. P0 Box 1658, Topeka. Kansas 66601 2Animal & Dermatology Clinic for Anima1s, 31205 Five Mile Road, Livonia, Michigan 48154 Funding: Hill‘s Pet Nutrition, Inc. BACKGROUND The use of fatty acids in pruritic dogs and cats has been the subject of numerous studies and considerable debate. Most of the studies have been uncontrolled open clinical trials using low doses of fatty acids for short periods of time. The fatty acid intake via the food was not controlled in most of the studies. OBJECTIVE Compare the total n-6 and total n-3 fatty acid intake of a dog being fed a variety of commercial pet foods to levels of fatty acids provided in selected dietary supplements. MATERIALS & METHODS Energy density (kcal/gram food) and essential fatty acid concentrations (total n-6 and total n-3 fatty acids, mg/gram food) were obtained for 25 commercial dog foods which represented typical grocery brand, specialty brand and veterinary medical foods fed in the United States. Information was obtained from manufacturers published information(1-3)or analysis of product (Woodson-Tenent Laboratories, Des Moines, Iowa). Results of analyticals were the mean value of samples taken from a minimum of three manufacturing date codes. Energy density was calculated using a standard technique.(4) The total food consumed (grams), total n-6 fatty acids consumed (milligrams), and total n-3 fatty acids consumed (milligrams) were calculated for a 10 kg dog eating 600 kcals per day. The total n-6 and total n-3 fatty acid concentrations of the dietary supplements were obtained from published information.(5,6) No attempt was made to quantify the consumption of individual fatty acids since this information was often not available. RESULTS The total essential fatty acid intake for a 10 kg dog eating 600 kcal per day or being given one of the selected supplements is summarized. Product Food Total n:6 Total n:3 consumed consumed consumed (grams) (mg) (mg) Eukanuba Original, dry 135 4300 782 Eukanuba Adult, dry 139 3504 638 Eukanuba Light, dry 155 2628 479 Eukanuba Puppy, dry 133 5453 1596 Eukanuba Response Formula, dry 147 2353 441 Eukanuba Response Formula, canned 476 9381 1285 Eukanuba Nutritional Recovery, dry 129 5418 1058 Eukanuba Nutritional Recovery, canned 300 6690 810 Iams Puppy, dry 140 4900 280 Iams Less Active, dry 171 4446 342 NutroMax, Dry 140 5460 280 NutroMax Special, dry 158 3634 158 Prescription Diet Canine d/d, dry 148 5039 563 Prescription Diet Canine d/d, canned 432 2633 647 Prescription Diet Canine/Feline a/d, canned 472 6230 2832 Purina Dog Chow, dry 158 3160 158 Purina Puppy Chow, dry 158 2844 158 Purina Fit‘N Trim, dry 182 3002 182 Purina HiPro, dry 158 3160 158 Purina ProPlan Lite, dry 182 3640 182 Science Diet Canine Maintenance, dry 155 5179 529 Science Diet Canine Light, dry 216 7488 777 Science Diet Canine Senior, dry 169 5662 575 Science Diet Canine Maint, Lamb Meal & Rice,dry 154 5081 798 Science Diet Canine Active, dry 130 6760 650 EFA-Caps 1 capsule 10 75 EFA-Caps HP 1 capsule 30 160EFA-Z Plus 1/4oz 3410 83Palavite l0 g scoop 492 95Pet-Derm OM Regular 1 capsule 14 135Pet-Derm OM Extra Strength 1 capsule 28 270Pet-Derm OM Liquid 2ml 28 270Derm Caps Regular 1 capsule 402 42Derm Caps ES 1 capsule 368 125Derm Caps Liquid 1 ml 621 65Derm Caps ES Liquid 1ml 375 130 Dermega III Regular 1 capsule 310 63Dermega III Extra Strength 1 capsule 412 172Omegaderm-3 5 ml 3550 56Palamega 1 tablet 95 105 CONCLUSIONS Total essential fatty acid intake, total n-6 fatty acid intake and total n-3 fatty acid intake varies tremendously depending upon the commercial pet food eaten by the dog. Levels of n-6 fatty acids and n-3 fatty acids consumed in the food often far exceed levels which are provided by commercial dietary supplements. This suggests that future clinical trials with fatty acid supplements should always use a controlled level of fatty acids in the food. The use of supplements may be ineffective in modifying fatty acid intake in dogs eating some types of commercial foods. The levels of individual fatty acids (e.g., DGLA, EPA, and DHA) in the food and supplement may be important and should be further evaluated. REFERENCES 1. Eukanuba Veterinary Diets Product Reference Guide. Iams Co., Dayton, OH, 1996. 2. Technical information Manual Hill’s Pet Nutrition, Topeka. KS, 1996. 3. Coffman HD. Comparative Reference Guide to Premium Dry Dog Food. Nashua, NH PigDog Press; 1994. 4 . Association of American Feed Control Officials. Official Publication, 1997. 5. Ackerman L. Dermatological use of fatty acids in dogs and cats. Vet Med 1995; 90: 1149-1155. 6. 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