Navegando por Autor "Oliveira, Hilário Ranulfo Vilela"

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    Efeito da xilanase isolada ou associada à levedura na dieta de leitões a base de sorgo sobre o desempenho e a microbiota intestinal
    (Universidade Estadual do Norte do Paraná, 2018-09-20) Oliveira, Hilário Ranulfo Vilela; Silva, Marcos Augusto Alves da; https://orcid.org/0000-0002-5570-8677; http://lattes.cnpq.br/4973981237909142; Silva, Marcos Augusto Alves da; https://orcid.org/0000-0002-5570-8677; http://lattes.cnpq.br/4973981237909142; Silva, Caio Abércio da; https://orcid.org/0000-0001-9123-0343; http://lattes.cnpq.br/8966841350918859; Silva, Marcelo Alves da; http://lattes.cnpq.br/3283906522734749
    The objective of the present study was to determine if the supplementation of Xilanase, combined or not with live yeasts, in sorghum-based diets would influence the performance and intestinal bacterial populations of piglets. One hundred and eighty hybrid piglets from commercial lines with 23 days of age and initial mean weight of 6.83 ± 1.49 kg were distributed in three treatments: Control diet, Treatment 1 (T1 = control diet supplemented with xylanase [Econase® XT]) and Treatment 2 (T1 + live yeast diet, [Vistacell®]). Each treatment had 10 replicates, with 6 animals each. Two feeding phases with diets based on sorghum and soybean meal, and water were available ad libitum throughout the experimental period. Average daily weight gain (ADG) and average daily feed intake (ADFI) were measured from 0 to 42 days (23 to 65 days of age) and feed conversion was calculated (FCR). At the end of the study, one animal per bay was slaughtered for collection of intestinal contents and bacterial identification by 16S rRNA sequencing of the ileal and cecal digesta of one piglet per replicate. The piglets that received yeast-associated xylanase diet showed a tendency to increase in ADG compared to those that belonged to the control group (p < 0.05). The feed conversion improved in T2 treatments when it was compared with the control group (p < 0.05). T1 and T2 tended to increase the relative presence of the Lactobacillaceae family in the ileum and cecum (p < 0.05). The counts of the families Clostridiaceae and Enterobacteriaceae were significantly reduced in the ileum (p < 0.05) in treatments 1 and 2. There was no difference in the occurrence of diarrhea between treatments. The supplementation of live yeasts combined with xylanase in piglets improved performance and led to a better intestinal microbial balance.