Efeito de manoligossacarideo, ácidos orgânicos e óleo essencial em substituição à colistina na dieta de leitões

Abstract

The objective of this study was to evaluate the effect of feed additives, commercial mixture of mann oligosaccharides and organic acids and micro encapsulated commercial mixture of essential oil (OE) and organic acids (AO), in the diet of post-weaning piglets on performance, diarrhea incidence, economic efficiency indexes and cost index. Two experiments were carried out, with the use of 644 piglets in each experiment, male and female, hybrid and distributed in a completely randomized block design, with 4 treatments, 7 repetitions per treatment and 23 animals per experimental unit. The tested treatments were: 1-negative control (CN), 2-positive control with colistin sulfate (CP), 3-CN with manooligosaccharide and organic acids (MOS + OE) and 4-CN with essential oil and organic acids (MOS + OE). Data on gorwth performance and incidence of diarrhea were subjected to analysis of variance and, if significant, the Tukey test was applied at the 5% probability level. Statistical analyzes were performed using the SAS Studio [marca registada] statistical program. For the variables evaluated, economic efficiency index (IEE) and cost index (IC) in experiment 1, the most efficient and least cost diet was with the inclusion of colistin. For experiment 2, the most efficient and least cost diet was the diet without the inclusion of colistin sulfate or additives. Through the evaluations, it was demonstrated that, although the results for economic efficiency and cost index were better with the use of colistin sulfate, the difference evidenced was minimal in relation to the non-inclusion of additives. When there is no addition of colistin sulfate, the performance results were not affected, and the costs were also little affected. Regarding the inclusion of antibiotics and additives, there was an increase in the price of the feed used in the treatments of 0.02 cents, for the treatment of colistin sulfate, 0.03 cents with the use of (MOS + OE) and 0, 06 cents with the use of the treatment (MOS + OE). Thus, it may be possible to reduce antibiotics in animal production in the future, or to replace them with performance.