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" Evaluation of phosphorus, calcium, and magnesium content in commercially available foods formulated for healthy cats. "
Summers, Stacie C; Stockman, Jonathan; Larsen, Jennifer A; Zhang, Lei; Rodriguez, Anais Sanchez
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AL
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| Record Number
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911181
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LA2j56m0k0
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| Title & Author
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Evaluation of phosphorus, calcium, and magnesium content in commercially available foods formulated for healthy cats. [Article]\ Summers, Stacie C; Stockman, Jonathan; Larsen, Jennifer A; Zhang, Lei; Rodriguez, Anais Sanchez
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2020
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| Title of Periodical
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UC Davis
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| Abstract
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BACKGROUND:High dietary phosphorus (P) and low calcium-to-phosphorus ratio (Ca:P) are associated with kidney damage in cats. There are no established guidelines for dietary P maximum for cats. OBJECTIVES:To quantify crude protein, P, Ca, and magnesium (Mg) concentrations in cat foods and compare among food formats (dry, canned, raw), primary protein ingredients, protein concentrations (low, moderate, high), grain-free versus grain-containing foods, foods intended for adult maintenance versus all life stages, and cost. SAMPLES:Eighty-two commercial nonprescription cat foods. METHODS:Descriptive study. Mineral concentrations were measured using inductively coupled argon plasma-optical emission spectroscopy. Crude protein was measured using the Dumas nitrogen combustion method. Mineral and crude protein concentrations were compared among food categories. RESULTS:Twenty-seven foods contained ≥3.6 g P/1000 kcal metabolizable energy (ME), of which 7 exceeded 4.8 g/1000 kcal ME. Thirteen foods had low Ca:P ratio (≤1.0). The low-protein diet group had no products ≥3.6 g P/1000 kcal ME, which was significantly different compared to the high-protein diet group (52% of products had ≥3.6 g P/1000 kcal ME; P = .01). No significant differences in P content and Ca:P ratio were found among other diet categories. Canned foods had significantly lower Mg compared to dry (P < .001) and raw (P = .007) foods. Declared minimum P and Ca were significantly lower than analyzed concentrations (P = .0005 and P = .003, respectively). CONCLUSIONS AND CLINICAL IMPORTANCE:The high number of foods with high P and low Ca suggest that pet food regulatory reform should be considered.
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