The effect of theadditives Yucca schidigera (YSC) and zeolite (clinoptilolite) on digestibility,fecal texture and odor, blood parameters and urine pH of domesticated felineswas evaluated. The experiment was conducted in a randomized block design, withtwenty-one cats, in two periods, distributed in seven treatments: moist commercialfeed (control); control + 125, 250 and 375 ppm YSC; and control + 0.5; 0.75and 1.0 % zeolite. No differences were observed between the diets regardingapparent digestibility coefficients of nutrient, energy, urine pH or blood parameters.However, levels of 0.5 and 0.75% zeolite were effective both in reducing odor(R2 = 96.39) and for fecal texture (R2 = 99.63), showinga quadratic pattern for these variables. Levels of 125 and 375 ppm YSC werealso efficient in reducing fecal odor; however they did not adjust to regression.Levels of 0.5% and 0.75% zeolite significantly reduce odor of feces and increasefecal texture when added to commercial feed for cats.
