Uso de prebióticos à base de mananoligossacarídeo em rações para frangos de corte

Abstract

RESUMO -O experimento foi realizado com objetivo de estudar o uso de mananoligossacarídeos (standard e concentrado) em rações para frangos de corte. Foram utilizados 1.080 pintos de corte machos da marca Ross, com peso médio inicial de 42 g, distribuídos em um delineamento inteiramente ao acaso, com seis tratamentos e nove repetições de 20 aves por unidade experimental. As aves foram criadas em cama de maravalha reaproveitada, utilizada anteriormente por outro lote. gain, feed intake, feed:gain ratio, viability and prime cuts yield were evaluated. In the period from 1 to 21 days old, no significant differences across the treatments on feed intake, feed:gain ratio, and viability were found. The results of performance of birds fed diet containing MOS ST or MOS AT combined or not with the antibiotic, did not differ form those of treatments with avilamicin and control. In the period from 1 to 42 days old, mannanoligosaccharides standard (MOS ST) combined or not with avilamicin, increased weight gain, whereas the mannaoligosaccharide high concentration (MOS AT) showed did not affect weight gain. Feed:gain ratio, feed intake and viability were not affected by the different treatments, but the additives increased prime cuts yield and it decreased abdominal fat.Key Words: additive, antibiotic, feed efficiency, MOS IntroduçãoA escolha de um bom promotor de crescimento deve basear-se em dois fatores: aspecto econômico e segurança. É inquestionável que a relação custo:benefício favorece o uso de antibióticos como aditivo. Todavia, a segurança alimentar começou a ser questionada, principalmente em razão do uso rotineiro desse aditivo na alimentação animal.O uso de drogas estratégicas para a saúde humana tem sido limitado na Europa por favorecer o desenvolvimento

β-mannanase and mannan oligosaccharides in broiler chicken feed

“…These results corroborate those obtained by ALBINO et al (2006), who tested antibiotics and MOS-based prebiotics in broiler diets and observed better broiler carcass yield.…”

“…The better performance may be associated with the stimulus to the intestinal mucosa provided by the enzyme, since it reduces intestinal viscosity, allowing for higher nutrient absorption, consequently favoring higher weight gain. These results corroborate those obtained by ZOU et al (2006) and ALBINO et al (2006), CARAMORI JR et al (2008) and GODOI et al (2008), who tested antibiotics and MOS-based prebiotics in broiler diets and saw an improvement in the broilers' weight gain. On the other hand, ESONU et al (2004), while assessing diets with and without added cellulase enzyme, did not see an improvement in the birds' fi nal weight or feed conversion ratio.…”

“…These results were similar to those obtained by SOUZA et al (2008), who did not fi nd a better breast yield in broiler chickens fed with diets containing MOS and enzymatic complex. On the other hand, ALBINO et al (2006), assessing the addition of MOS in broilers at 42 days of age, found signifi cant differences in the breast yield of the broilers.…”

“…However, since the exact effect of the enzyme interaction is unknown, and there is a diffi culty in determining the amount of NSPs present in foods, the results may often be controversial (ALBINO et al, 2006). Mannan oligosaccharides (MOS) derived from the yeast cell wall have high binding affi nity, providing a competitive binding site for oligosaccharide-specifi c bacteria.…”

Usage of probiotic in country-type broiler's chicken diet and its effects over the carcass yield, morphology and the gastrointestinal pH

“…Dalólio et al (2015) did not find significant differences in the inclusion of varied additives as an alternative to the antimicrobials in hick broiler's diet, in relation to the carcass yield and the cuts, as in the present study. On the other hand, Albino et al (2006) witnessed an upgrading on breast yield, breast fillet and legs as they used prebiotics in hick broiler's diet. Comparatively, Rocha et al (2010), utilizing prebiotics, organic acids and probiotics in rations to hick broiler's obtained better breast yield in comparison to those who received ration without additives.…”