Aditivos alternativos a antibióticos para frangos de corte no período de 22 a 42 dias de idade

Abstract

A pesquisa foi conduzida para avaliar o desempenho, metabolizabilidade dos nutrientes e rendimento de carcaça e dos principais cortes comerciais de frangos de cortes alimentados com dietas contendo aditivos alternativos a antibióticos promotores de crescimento, no período de 22 a 42 dias. Os tratamentos foram constituídos de uma ração controle padrão para atender as exigências das aves em cada fase e os demais adicionados de antibiótico; probióticos, prebióticos e simbióticos, com quatro repetições. O uso de probiótico (Lactobacillus acidophilus, Streptococcus faecium e Bifidumbacterium bifidum), do prebiótico (mananoligossacarídeo - MOS) e simbióticos, em ração de frangos de corte, proporciona resultado semelhante ao uso do antibiótico avilamicina 12% para desempenho, rendimento de carcaça e cortes comerciais (peito, dorso, coxa, sobrecoxa, asas, entreasas), coeficiente de metabolizabilidade da matéria seca, da proteína bruta e da energia bruta, no período de 22 a 42 dias de idade, constituindo esses aditivos em alternativa importante na substituição dos antibióticos promotores de crescimento.

Performance And Economic Viability Of Broiler Chickens Fed With Probiotic And Organic Acids In An Attempt To Replace Growth-Promoting Antibiotics

“…2007; Willis et al 2007;Yalcinkayal et al 2008;Silva et al 2011;Ramos et al 2014;Barbieri et al, 2015). Differently from the findings in this study, Abdel-Fattah et al (2008) added citric acid, acetic acid and lactic acid in diets for broilers in the period from 1 to 42 days and noticed an improvement in their weight gain compared to the feed without additives.…”

Probiotics on performance, intestinal morphology and carcass characteristics of broiler chickens raised with lower or higher environmental challenge

“…Ramos et al (2014) reported increased feed intake and weight gain with the probiotics utilization (Lactobacillus acidophilus, Bifidobacterium bifidum and Streptococcus faecium), and attributed these results to the environment with re-used litter. Marubashi et al (2012) reported improved feed conversion in broilers fed diets supplemented with probiotic (Bacillus subtilis) compared to the control group.…”

“…The evaluation of the effect of probiotics on performance, development of the intestinal mucosa and carcass characteristics resulted on divergent outcomes. Comparing probiotics to control group, positive results were obtained on the performance (Ramos et al 2014, Marubashi et al 2012, Sen et al 2012, Patel et al 2015, on the development of intestinal mucosa of broilers (Sen et al 2012, Fallah et al 2013 and on the carcass (Boostani et al 2013). However, other results show no significant effect on performance (Souza et al 2011, Shargh et al 2012, Domingues et al 2014 and carcass yield (Souza et al 2011, Domingues et al 2014.…”

Effect of the Supplementation of Plant Extracts Based Additive in Broiler Chicken Diets on Productive Performance, Carcass Yield, and Meat Quality

“…Upon testing a mixture of plant extracts composed of cloves, thyme, cinnamon, pepper, and oregano, Rizzo et al (2010) also found a similar performance to that related to the diet with AGP. Ramos et al (2014) supplemented the rations for broilers with additives as an alternative to the conventional use of antimicrobials and found no significant differences in productive performance.…”