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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2015 > Volume 14 Number 11 > Adriano Barbieri , Gustavo do Valle Polycarpo , Robert Guaracy Aparecido Cardoso , 1 2 1 Kelry Mayara da Silva , Julio Cezar Dadalt , Alda Maria Backx Noronha Madeira , 1 2 3 Ricardo Luiz Moro de Sousa , Ricardo de Albuquerque and Valquíria Cação Cruz-Polycarpo 4 2 1

Effect of Probiotic and Organic Acids in an Attempt to Replace the Antibiotics in Diets of Broiler Chickens Challenged with Eimeria spp.

Adriano Barbieri , Gustavo do Valle Polycarpo , Robert Guaracy Aparecido Cardoso , 1 2 1 Kelry Mayara da Silva , Julio Cezar Dadalt , Alda Maria Backx Noronha Madeira , 1 2 3 Ricardo Luiz Moro de Sousa , Ricardo de Albuquerque and Valquíria Cação Cruz-Polycarpo 4 2 1
College of Technology and Agricultural Sciences, 1 UNESP-Universty Estadual Paulista-Campus of Dracena, Rod. Cmte., João Ribeiro de Barros, km 651, Dracena-SP, 17900-000, Brazil Department of Animal Nutrition and Production (VNP), University of São Paulo (FMVZ-USP), 2 Av. Duque de Caxias Norte, 225, Pirassununga-SP, 13635-900, Brazil Department of Parasitology, University of São Paulo (Biomedical Science Institute-USP), 3 Av. Prof. Lineu Prestes, 1374, ICBII, São Paulo-SP, 05508-000, Brazil Department of Veterinary Medicine, University of São Paulo (FZEA-USP), 4 Av. Duque de Caxias Norte, 225, Pirassununga-SP, 13635-900, Brazil
Abstract :

The effect of probiotic (Bacillus amyloliquefaciens) and organic acids (lactic, acetic and butyric acid), isolated or combined, in an attempt to replace the antibiotics (avilamycin+sodium monensin) on intestinal anaerobic bacteria, allometric growth of digestive organs, intestinal morphometric and performance of broilers challenged by Eimeria (acervulina, maxima and tenella) were studied in a 1 to 21-d experiment. A total of 900 male Cobb chicks were distributed in a completely randomized design in a 2 x 2 + 1 factorial arrangement, presence or absence of probiotic and organic acids more a positive control with antibiotics, with six replicates. The probiotic promoted some changes on total anaerobic microorganisms throughout the small intestine in both periods (p<0.02), whereas the antibiotics decreased this counting only until 14 days (p<0.04). Antibiotics increased liver weight at 14 days (p<0.01) and reduced the relative weight of the pro-ventricle, gizzard and all segments of the small intestine at 21 days (p<0.01). At 14 days, the alternative additives reduced the villus height and crypt depth (p<0.05), whereas the probiotic increased the width of the villus base (p<0.01). Antibiotics reduced the crypt depth and width of the villi in the small intestine in both periods (p<0.05). Although some changes in the intestinal microbiota and morphology, the alternative additives, isolated or combined, did not change the birds’ performance (p>0.05), only the antibiotics provided better results on BW gain and feed: gain in 1 to 14 and 1 to 21 d-old (p<0.05) of broilers challenged with Eimeria spp.

Keywords :
Acidifier, avilamycin, Bacillus amyloliquefaciens, sodium monensin

Date Deposited : 05 Jan 2016 09:50

Last Modified : 05 Jan 2016 09:50

Official URL: http://www.pjbs.org/ijps/14(11).htm

Volume 14, Number 11, - 2015 , ISSN 1682-8356

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