1. Aflatoxinas e fumonisinas em rações de um sistema de produção de frangos de corte no estado de São Paulo, Brasil
- Author
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Estela Kobashigawa, Larissa Tuanny Franco, Carlos Humberto Corassin, Romulo Dutra Uliana, and Carlos Augusto Fernandes de Oliveira
- Subjects
Aflatoxin ,productivity ,Soybean meal ,Biology ,computer.software_genre ,lcsh:Agriculture ,mycotoxins ,lcsh:Agriculture (General) ,micotoxinas ,broiler chickens ,General Veterinary ,digestive, oral, and skin physiology ,lcsh:S ,0402 animal and dairy science ,Broiler ,food and beverages ,FB1 ,04 agricultural and veterinary sciences ,lcsh:S1-972 ,AFB1 ,produtividade ,040201 dairy & animal science ,frangos de corte ,040103 agronomy & agriculture ,Operating system ,0401 agriculture, forestry, and fisheries ,Animal Science and Zoology ,Agronomy and Crop Science ,computer - Abstract
portuguesO objetivo do presente trabalho foi verificar a ocorrencia de aflatoxinas (AFs) e fumonisinas (FBs) em ingredientes (milho e farelo de soja) e na racao de abate sobre a produtividade de uma empresa integradora de frangos de corte, bem como avaliar seus efeitos sobre produtividade de 20 lotes de frangos produzidos pela empresa e a histologia dos figados dos frangos apos o abate. As amostras de milho apresentaram as maiores frequencias de AFs e FBs, em concentracoes medias de 29,1 e 2.100µg/kg, respectivamente. As amostras de farelo de soja apresentaram niveis medios de 1,5 e 70µg/kg para AFs e FBs, respectivamente. Os lotes de aves que receberam racao contendo niveis de FBs maiores que 1,000µg/kg apresentaram menor ganho de peso e maior percentual de mortalidade, enquanto que as que receberam racao com AFs iguais ou superiores ao limite de quantificacao (LQ) do metodo analitico apresentaram maior grau de alteracao histopatologica no figado. Houve efeito de diluicao de AFs e FBs dos ingredientes, especialmente o milho, a racao no processo de fabricacao, porem nao suficiente para evitar perdas na produtividade. Os resultados do estudo reforcam a necessidade do controle estrito de micotoxinas no milho destinado a alimentacao de frangos de corte. Palavras-chave: micotoxinas; AFB1; FB1; frangos de corte; produtividade EnglishThe aim of the present study was to assess the occurrence of aflatoxins (AFs) and fumonisins (FBs) in feed ingredients (corn and soybean meal) and finishing feed in a broiler operation system, as well was to evaluate their effect on the productivity of 20 batches of broilers produced and the histology status of broilers’ liver after slaughter. Corn samples presented the highest frequencies of AFs and FBs, at mean levels of 29.1 and 2,100µg/kg, respectively. Soybean samples presented mean levels of 1.5 and 70µg/kg for AFs and FBs, respectively. Batches of broilers receiving feed containing FB levels higher than 1,000µg/kg had lower weight gain and higher mortality rates, while those fed rations with AFs equal or above the limit of quantification (LOQ) of the analytical method presented higher scores of histological changes in the liver. A dilution effect was observed for AFs and FBs from ingredients, especially corn, to feed during manufacture, whilst not enough to prevent losses in productivity. Results of this trial highlighted the need for strict control of mycotoxins in corn intended for broilers. Key words: mycotoxins; AFB1; FB1; broiler chickens; productivity
- Published
- 2019
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