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. 2005 Oct;69(4):299–304.

Table VI.

Mean (± sχ̄) values of urinary pH, urinary concentrations of struvite constituents, negative logarithm of struvite activity product (pSAP), and urinary struvite crystals in 12 cats fed a dry diet containing meat meal (MM), chicken meal (CM), or corn gluten meal (CGM)

Variable MM CM CGM
pH 7.99 ± 0.12a 7.58 ± 0.11b 7.08 ± 0.08c
Magnesium (mM) 4.50 ± 0.46b 6.85 ± 0.82a 4.70 ± 0.45b
Ammonium ion (mM) 86.3 ± 13.2c 117.1 ± 12.0b 147.8 ± 14.4a
Total phosphorous (mM) 36.1 ± 4.3b 40.9 ± 5.1b 54.6 ± 5.3a
Phosphoric acid ion (× 10−3 mM) 3.15 ± 5.92a 1.14 ± 1.27b 0.50 ± 0.45b
pSAP 9.27 ± 0.09b 9.20 ± 0.09b 9.61 ± 0.15a
Struvite crystals (No./μL of urine) 374.3 ± 42.1a 403.2 ± 70.3a 114.4 ± 34.4b

BW — Body weight

a,b,c

Mean values which do not have a common letter in their superscripts differ at a significance level of P < 0.05