Utilização de enzimas exógenas para suínos em fase pós-desmame

Abstract

The study evaluated different enzyme combinations for 120 weaned piglets (Lin. PIC x PIC 337, initial age 25 days, final age 64 days, initial weight 5.0 ± 0.2 kg), using a completely randomized design with five treatments: Control with Phytase (Phyt), Phytase + Protease (Phyt + Prot), Phytase + Carbohydrases (Phyt + Carb), Phytase + β-mannanase (Phyt + β-man), and Enzyme blend, with six replications and four animals per pen. Average daily feed intake (CRMD), daily weight gain (GPD), feed conversion ratio (CA), final average weight (PMF), and fecal score (EF) were analyzed across three phases: pre-initial (3 kg), pre-initial II (4 kg), and initial (21 kg). Subsequently, an economic analysis was conducted to determine the index of economic efficiency (IEE) and average cost index (ICM), along with principal component analysis (PCA). During pre-initial phases I and II, animals fed diets containing Fit. and Fit + Prot showed improved CRMD and GPD (P < 0.05). Evaluating the entire experimental period, piglets fed Fit diets and Fit + Prot diets achieved better GPD, CRMD, and PMF (P < 0.05). The different treatments did not influence fecal score analysis (P > 0.05). Economic analysis indicated that the Phytase + Protease combination had better IEE and ICM in certain phases of the experiment, suggesting improved performance with this enzymatic addition. The inclusionof Fit. and Fit + Prot in the diets of weaned piglets resulted in improved zootechnical performance and economic efficiency.