Uso de produtos alternativos aos antimicrobianos na avicultura
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2011-11
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The integrity of the intestinal birds have a direct impact on the efficiency of its
production. Requiring the adoption of measures to increase the longevity of
enterocytes.Because the bird spends about 20% of gross energy consumed for
maintenance of the intestinal epithelium, which means a high energy cost. So when
injuries occur in this tissue, while reducing the amount of substrate digested and
absorbed, there is a higher energy demand for cell renewal. The energy that could
have been used for the production is directed to the cell turnover, resulting in a lower
weight gain and a high feed conversion (FRANCO, 2010). Thus, the profitability of
the poultry is directly affected when the intestinal integrity is impaired. To reduce this
impact is important to adopt preventive measures throughout the production cycle,
among which stand out the use of food additives, designed to keep the gut
healthy. However, the European Union banned the use of various antimicrobial
agents that were used as additives in animal feed, which could promote intestinal
health and performance (AARESTRUP et al., 2010). Thus, the search for alternatives
to antimicrobial agents has become the subject of study companies and
researchers. This modulation of intestinal microbiota by these alternative products is
because they act as food for beneficial intestinal bacteria, stimulating its growth,
whose metabolites act by reducing the pH by increasing the amount of organic acids
present in the cecum, immobilizing and also reducing the capacity of attachment of
pathogenic bacteria in the intestinal mucosa. It is also speculated that these products
may act by stimulating the immune system by reducing indirect intestinal
translocation of pathogens, certain infections after reaching the bloodstream (KIM et
al. 2011). Another effect of dietary supplementation with these products is the
development of the gut, increasing the height of villi in different intestinal segments of
the birds, causing increased weight gain (SANTIN, 2001). Considering all these
aspects, we attempted to conduct a review of the main alternatives to antimicrobials
used in poultry production.
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Animais, Antimicrobianos, Desempenho, Saúde, Animals, Antimicrobials, Performance, Health
Citação
SANTANA, Eliete Souza; MENDES, Fernanda Rodrigues; BARNABÉ, Ana Caroline de Souza; OLIVEIRA, Fábio Henrique de; ANDRADE, Maria Auxiliadora. Uso de produtos alternativos aos antimicrobianos na avicultura. Enciclopédia Biosfera, v. 7, n. 13, p. 985-1009, nov. 2011.