Acidifying and yeast extract in diets for adults cats.
This study evaluated the effects of adding an acidifying agent based on phosphoric acid (A), a yeast extract from a specific strain (Saccharomyces cerevisiae) (Y) and the combination of these two additives in food for adult cats. A test was conducted with 24 animals (mean 3.5 years old), mixed breed, weighing 3.72 ± 0.74 kg, kept in individual metabolic cages and distributed in a completely randomized design with a 2 × 2 factorial design (with or without A 0.6% of dry matter, with or without Y 1.5% of dry matter) totalling four treatments and six replicates of each condition. The experimental period was 15 days. The A or the Y reduced (P< 0.01) the dry matter intake, but the effect was not observed when they were associated. The association improved (P<0.05) the digestibility of dry matter and ashes. The A reduced urine pH (P=0.05) regardless of the presence of the Y. There was no effect (P>0.09) on other parameters evaluated. Results of this study show that the isolated use of 0.6% A or 1.5% Y in diets for cats is not recommended. However, the association of these two additives was beneficial in increasing nutrient digestibility.
Animal Science Department, Federal University of Lavras, Lavras, Brazil.
Rosana C S
RC
Ogoshi
Márcio G
MG
Zangeronimo
Jéssica S
JS
Dos Reis
Janine
J
França
João P F
JP
Santos
Carolina P
CP
Pires
Ana F
AF
Chizzotti
Adriano C
AC
Costa
Lívia G
LG
Ferreira
Flávia M O B
FM
Saad
D000375:Aging; D000818:Animals; D002415:Cats / Q000502:physiology*; D004032:Diet / Q000592:standards*; D005260:Female; D005503:Food Additives; D006863:Hydrogen-Ion Concentration; D008297:Male; D010756:Phosphoric Acids / Q000494:pharmacology; D012441:Saccharomyces cerevisiae; D015003:Yeasts
D005503:Food Additives; D010756:Phosphoric Acids; C030242:phosphoric acid
additives; digestibility; felines; fosforic acid; urinay pH