Dietary magnesium (Mg) intake influences P and Ca bioavailability in cats, however the metabolic mechanism is poorly understood. Diets containing P concentrations greater than 3.6 g/1000 kcal of metabolizable energy (ME) with a low calcium to phosphorous (Ca:P) ratio (< 1.0 ) have been associated with altered renal function, characterized by decreased glomerular filtration rate, increased serum creatinine concentration, renal echogenicity changes on ultrasonography, and nephrolithiasis. Recent studies have indicated that high dietary phosphorous (P) content may be a contributing factor in the development of CKD in adult cats. The authors’ work was supported by a grant from the Winn Feline Foundation (grant number MTW18-001: Evaluation of commercial feline diets for calcium, phosphorous and the calcium to phosphorous ratio in commercial cat foods).Ĭhronic kidney disease (CKD) is a common condition of geriatric cats. Evaluation of phosphorus, calcium, and magnesium content in commercially available foods formulated for healthy cats. Summers SC, Stockman J, Larsen JA, Zhang L, Rodriguez AS.
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