Aditivos fitogênicos e butirato de sódio como promotores de crescimento de leitões desmamados

Alternatives to antibiotic growth promoters for weanling pigs

“…The data from this study are consistent with those found by COSTA et al (2011), who also found no improvement in the performance of piglets (21 to 55 days of age and BW of 6.10 to 20.56kg) that were supplemented with essential oil of thyme (Thymus vulgaris), cinnamon (Cinnamonum zeylanicum), eucalyptus (Eucalyptus urophylla), Melaleuca alternifolia, Echinacea angustifolia, extract of ginger (Zingiber officinale), pepper (Capsicum frutescens) and sodium butyrate which have the same mechanisms of action of the extracts and acids studied in this research. The lack of improvement in the performance of the piglets from the antibiotic or additive treatments in this experiment may be due to rigorous sanitary control of the facilities compared with commercial conditions, which may influence the effects of these additives on animal performance (NRC, 1998;OETTING et al, 2006).…”

“…The current experimental results agree with COSTA et al (2011), who showed that supplementing piglet feed with plant extracts or organic acids did not affect the pH of the stomach, jejunal and cecal contents. In contrast, MANZANILLA et al (2004) found an increase in the pH of the stomach contents of weanling pigs that were fed formic acid or plant extracts compared with the control treatment.…”

“…In contrast, MANZANILLA et al (2004) found an increase in the pH of the stomach contents of weanling pigs that were fed formic acid or plant extracts compared with the control treatment. A possible explanation for the lack of change in the pH of the digestive contents could be the buffering capacity of the feed (COSTA et al, 2011). The basal diet for this experiment consisted of kaolin clay (mineral), protein sources and other sources of minerals, which may have increased the buffering capacity of the feed and prevented pH variation in the contents of such organs.…”

“…Some studies show results suggesting that the inclusion of such supplements has favorable effects (OETTING et al, 2006;YAN et al, 2012) and others show no effects of supplementation (BHANDARI et al, 2008;COSTA et al, 2011). 1 Commercial product, Prius L68 -crude protein (10.5%), lactose (71.5%), spray-dried fat (4.5%), and metabolizable energy (3780kcal kg -1 ).…”

“…Organic acids are also formed by microbial fermentation of carbohydrates in the intestines of pigs and other intermediary metabolic processes (COSTA et al, 2011). The sodium butyrate (C 4 H 7 O 2 Na) derived from butyric acid has been studied because it acts reducing gastric pH and dietary buffering capacity, which stimulates the production of pancreatic secretions and reduces colonization by pathogenic microorganisms, both in feed and in the gastrointestinal tracts of animals (KNARREBORG et al, 2002).…”