Efeitos do extrato da parede de levedura na digestibilidade, no escore fecal e na palatabilidade de dietas para gatos Effects of spray-dried yeast cell wall on digestibility, score of feces, and palatability of diets for cats

Abstract

Para avaliar o efeito do extrato seco da parede de levedura (EPL) sobre a digestibilidade, o escore fecal e a palatabilidade de dietas para gatos, foram realizados três ensaios experimentais. No primeiro, 20 animais adultos foram distribuídos ao acaso em quatro tratamentos: dieta comercial úmida (controle) e dieta-controle + 0,2, ou dieta-controle + 0,4 ou dieta-controle + 0,6% de EPL na matéria seca. No segundo, utilizaram-se alimento seco e as mesmas proporções com o mesmo delineamento do primeiro experimento. No ensaio 3, de palatabilidade, 20 gatos adultos receberam simultaneamente dieta comercial úmida sem e com a inclusão de 0,4% de EPL. No experimento 1, não foram observadas diferenças quanto à digestibilidade da matéria seca, proteína bruta, extrato etéreo, matéria orgânica e energia bruta, assim como no escore fecal; no segundo, houve aumento linear (PThe effects of spray-dried yeast cell wall (YCW) were evaluated on digestibility, score of feces, and palatability of diets for cats were evaluated. Three trials were carried out. In the first, 20 adult cats were randomly allotted in four treatments: wet commercial diet (control) and control plus 0.2, 0.4, or 0.6% of YCW in dry matter. In the second, a commercial dry diet was tested in an equal arrangement concerning concentration of YCW and number of animals of the first trial. In the third, 20 adult cats were fed at the same time a wet diet with or without 0.4% YCW. In the first trial, no differences among treatments for dry matter, crude protein, ether extract, organic matter, gross energy digestibility, and faecal score were observed. In second trial, positive linear effect on dry matter digestibility (P=0.046) was observed. In the third, negative effect of 0.4% YCW inclusion (P=0.004) on palatability of diet was observed. It was concluded that YCW inclusion in wet diet did not effectively alter the nutrients digestibilities but it decrease the palatability. However, the YCW inclusion in dry diets can be important to improve dry matter digestibility.

Keywords

• gato
• mananoligossacarídeo
• prebiótico
• alimento comercial
• cat
• mannanoligosaccharide
• prebiotic
• commercial diet