Research Communications of the 27(th) ECVIM-CA Congress: Intercontinental, Saint Julian's, Malta, 14th to 16th September 2017

Domestic short hair cats (n = 12; mean age 5.6 years, range 2 to 9 years) were randomized into two groups and fed one of two diets for 56 days and then crossed over to the other diet for another 56 days. The protocol was reviewed and approved by the Institutional Animal Care and Use Committee, Hill's Pet Nutrition, Inc. For 30 days before study initiation, cats consumed a pretrial (control) food that contained 0.07% AA and no measurable EPA or DHA. After 30 days, cats were split into two groups. Group 1 continued eating control food for 56 days. Group 2 was fed test food for 56 days, which contained 0.16 % AA, and 0.27% EPA and DHA combined. After 56 days, Group 1 cats were fed test food and Group 2 cats were fed control food for another 56 days. Serum was analyzed for FA concentrations at baseline and after each feeding period. Concurrently, urine was analyzed for urine specific gravity (USG), calcium concentration, and relative super saturation for struvite crystals. In addition, a urine calcium oxalate titrimetric test (COTT) was performed.