Fibra em detergente neutro e fibra em detergente ácido em dietas para suínos em terminação: Estudo meta analítico

Abstract

Dietary fiber is a limiting nutrient in the nutrition of pigs because dietary fibers have fibrous fractions, depending on their characteristics can be used to improve or impair the growth performance of animals. In this context according to its characteristics the non-starch polysaccharides (soluble or insoluble) may cause different reactions in the gastrointestinal tract of finishing pigs. Approximately 70% of the production of finishing pigs expenses are tied to the purchase of ingredients that make up their rations. Thus, the use of fibrous foods, often ingredient of low commercial value, in diets of finishing pigs can become an alternative and has been studied by many researchers with the objective of reducing activity costs. The fibrous ingredients used in finishing swine diets are composed of dietary fiber composed of an aggregate of compounds comprising mainly non-starch polysaccharides and phenolic compounds such as lignin. The non-starch polysaccharides are classified according to their solubility, soluble and insoluble. The content and solubility of non-starch polysaccharides used to compose the diets of finishing pigs vary according to the species and age of plant tissue and thus can interfere on the performance of finishing pigs. On the other hand the analytical study goal appears as an analytical tool that combines results of various studies performing reproducible and quantifiable summary of data.The data synthesis proposed by the meta-analysis improves the statistical potential in research on the effects of treatments, with If more reliable as the estimate of effect. In case of apparently discordant effects, the study analytical target yields overview of the situation. By analyzing the individual effect of a treatment with a low analytical potential due to the reduced n often can not be established plausible conclusions thus meta-analysis increases the likelihood verify significant differences between the work to improve the analytical power of the study . Considering the high amount of studies that present with the same goal, check the growth performance of finishing pigs using alternative foods high in dietary fractions and not always in accordance with its results becomes relevant study Analytical goal in order to evaluate the performance and the characteristics of the pig carcass finishing fed diets containing soluble and insoluble dietary fibers introduced in the feeding of pigs through the inclusion of alternative ingredients in their diets