USE OF NEEM (Azadirachta indica) AS A SUBSTITUTE FOR ANTIMICROBIAL DRUGS IN BROILER CHICKENS’ FEED

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Abstract

In the present work, we carried out an experiment aiming at evaluating the use of Neem as an antimicrobial substance in the feeds of broiler chickens. We used 240 one-day-old Cobb broiler chicks distributed in an entirely casual design, with 4 treatments, 6 repetitions and 10 birds per experimental unit, during a 21-day experimental period. Treatments consisted of a basal diet with no antimicrobial inclusion, a diet with 0.05% of tylosin, and a diet with 0.05% and 0.1% of Neem. Parameters evaluated were zootechnical performance, feed digestibility, intestinal count of Salmonella sp. and Escherichia coli, and the development of lymphoid organs. Data on the performance and metabolization of nutrients were subjected to an ANOVA and averages were compared with a post-hoc Tukey test considering ?=0.05. Data on E. coli counts were analyzed with a Kruskal-Wallis test. Neem did not influence performance variables. The metabolization coefficient of dry matter and feed ethereal extract was better with tylosin (P<0.05). No growth of Salmonella was observed during the experiment. The use of Neem did not reduce E. coli population and had no influence on lymphoid organs’ weight. Therefore, Neem had no effect on the performance, digestibility and intestinal microbiota of birds up to 21 days old.
Keywords: additive, phytogenic additives, bird nutrition, intestinal health

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Author Biographies

Alessandra Gimenez Mascarenhas

Professora Associada, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás

Helder Freitas de Oliveira, Doutorando em Zootecnia, Programa de Pós-graduação em Zootecnia, Universidade Federal de Goiás

Possui graduação em Zootecnia pela Universidade Estadual de Alagoas (2014), especialização em Criação de Aves pelo Centro de Produções Técnicas da Universidade Online de Viçosa (2015), mestrado em Zootecnia pelo Departamento de Produção Animal da Escola de Veterinária e Zootecnia da Universidade Federal de Goiás (2016). Atua como pesquisador no grupo de pesquisa Sistemas de Produção Animal no Semi-Árido da Universidade Estadual de Alagoas e no Núcleo de Pesquisa em Nutrição e Produção de Monogástricos da Universidade Federal de Goiás. Tem experiência na área de Zootecnia, com ênfase em Avaliação de Alimentos para Animais, atuando principalmente nos seguintes temas: alimentação alternativa, codornas japonesas, frangos de corte e sistema caipira de criação de aves.

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Published

2019-04-26

How to Cite

ASSUNÇÃO, P. da S.; MELLO, H. H. de C.; MASCARENHAS, A. G.; ANDRADE, M. A.; TEIXEIRA, K. A.; OLIVEIRA, H. F. de; CARVALHO, D. P. USE OF NEEM (Azadirachta indica) AS A SUBSTITUTE FOR ANTIMICROBIAL DRUGS IN BROILER CHICKENS’ FEED. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 20, p. 1–9, 2019. Disponível em: https://revistas.ufg.br/vet/article/view/52588. Acesso em: 17 jul. 2024.

Issue

Vol. 20 (2019): Continuous publication

Section

ZOOTECNIA

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