Adição de bentonita sódica como adsorvente de aflatoxinas em rações de frangos de corte

Lopes, Juarez Morbini; Rutz, Fernando; Mallmann, Carlos Augusto; Toledo, Geni Salete Pinto de

doi:10.1590/s0103-84782006000500040

Cited by 11 publications

(8 citation statements)

References 16 publications

(11 reference statements)

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“…The lower feed:gain ratio with NC is mainly related to the drastic decrease in feed intake (51% in relation to PC), without causing the same decrease in weight gain (35% in relation PC). This was also reported by Lopes et al (2006), who evaluated the inclusion of aflatoxin (2.5 mg kg −1 AFB 1 ) in the diet of chickens from 1 to 42 days. Therefore, the feed:gain ratio can lead to erroneous assessment.…”

Section: Resultssupporting

confidence: 66%

“…Contamination of broiler chickens by AFB 1 (2 mg kg −1 ) causes liver impairment, weight loss, difficulty in protein synthesis, immune suppression, and anorexia, which expose these animals to other challenges present in the rearing environment, thereby increasing mortality (Lopes et al, 2006). However, the contamination with fumonisin at levels up to 200 mg kg −1 does not influence mortality (Rauber et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Effects of mycotoxin adsorbents in aflatoxin B 1 - and fumonisin B 1 -contaminated broiler diet on performance and blood metabolite

et al. 2016

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-The present study examined the effect of aflatoxin (AFB 1 ) and fumonisin (FB 1 ) at the levels of 2 mg kg −1 AFB 1 and 100 mg kg −1 FB 1 and the efficiency of use of different levels of adsorbent based on sodium and calcium aluminosilicate on growth performance, hematological parameters, and biochemical parameters of broilers. A total of 1,440 Cobb broilers were distributed into the following treatments: positive control (PC) -no mycotoxin and adsorbent (AD); PC+3AD -no mycotoxin, with 3 g kg −1 adsorbent in feed; negative control (NC) -only mycotoxin; NC+1AD -with mycotoxin and 1 g kg −1 adsorbent in feed; NC+2AD -with mycotoxin and 2 g kg −1 adsorbent in feed; and NC+3AD -with mycotoxin and 3 g kg −1 adsorbent in feed. The amounts of AFB 1 and FB 1 added to NC reduced weight gain (35%) and feed intake (50%) compared with PC; however, inclusion of 2 or 3 g kg −1 adsorbent to NC alleviated such losses. Birds fed NC showed anemia, immunosuppression, and impaired liver function, observed by reduced cholesterol and increased gamma glutamyl-transferase activity compared with PC; values returned to normal levels when 2 or 3 g kg −1 of the adsorbent (as fed) were used. Mycotoxins cause adverse effects on most of the parameters studied, and the use of adsorbent at the levels of 2 and 3 g kg −1 of the adsorbent as fed partially negates the adverse effect of mycotoxicosis.

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“…The sodium calcium aluminosilicate compounds, at a concentration of 0.5% in the feed, have shown significant result in reducing the adverse effects of aflatoxin in poultry. Several studies have also shown that sodium bentonite is a good adsorbent for aflatoxins in poultry, as much as sodium calcium aluminosilicate compounds (MALLMANN et al 2007, LOPES et al 2009). LOPES et al (2006 observed, in treatments containing 3 mg/kg -1 of aflatoxins, the adsorbent promoted better performance, with 0.3% of bentonite showing better results.…”

Section: Adsorbents In Feed Of Use For Broilermentioning

confidence: 99%

“…Such loss occurs, for example, in weight gain, and it is determined by a reduction in protein synthesis rate and changes in energy metabolism (KUBENA et al 2001, ARAVIND et al 2003, compromising the immune system of animals and making them vulnerable to infectious diseases (LOPES et al 2006). …”

Section: Introductionmentioning

confidence: 99%

Micotoxinas na produção de frangos de corte

Oliveira

Souto

Martins

et al. 2018

Rev. Ciên. Agrovet.

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The occurrence of mycotoxins has become a problem to be discussed, due to its harmfulness to humans and animal's health, and may be an obstacle to the poultry economy. Mycotoxins are toxic metabolites produced by certain species of fungi and may contaminate food. Aflatoxins are mainly produced by Aspergillus flavus and Aspergillus parasiticus, and B1, B2, G1 and G2 are its best known types. Fumonisin, with its B1, B2 or B3 types, are produced by Fusarium, while ochratoxin A is produced by Penicillium and Aspergillus. The main trichothecenes mycotoxins are T-2 toxin, deoxynivalenol and diacetoxyscirpenol. Zearalenone, produced by different species of Fusarium fungi affects chickens only when they are exposed to extremely high levels of contamination. Generally, immunosuppression, hepatotoxicity and nephrotoxicity as a decrease in performance and production gains are the most observed effects. There are several laboratory methods that can be used for the determination of mycotoxins. In order to control the contamination, it is necessary to adopt proper farming practices which prevent fungi growth. Once grains and feed are contaminated, biological, physical and/or chemical decontamination methods may be employed, although the physical process with adsorbents mixed to the feed is more widely used. Due to the importance of mycotoxins to poultry production, it is necessary to adopt measures to prevent contamination, and also develop a control and an anti-fungal growth and toxin production program by reviewing the critical points favorable to the emergence of toxin-producing fungi. KEYWORDS: aflatoxin, fumonisins, ochratoxins, trichothecenes, zearalenone. RESUMOA ocorrência de micotoxinas tornou-se um problema a ser discutido, pois representa riscos à saúde dos animais e humanos, podendo constituir um obstáculo à economia avícola. Micotoxinas são metabólitos tóxicos produzidos por algumas espécies de fungose podem contaminar os alimentos. Aflatoxinas são majoritariamente produzidas por Aspergillus flavus e Aspergillus parasiticus, sendo B1, B2, G1 e G2 os tipos mais conhecidos. Fumonisinas são do tipo B1, B2 e B3, e produzidas pelo gênero Fusarium, enquanto a ocratoxina A é produzida por fungos da espécie Penicillium e Aspergillus. As principais micotoxinas dos tricotecenos são toxina T-2, deoxynivalenol e diacetoxyscirpenol. A zearalenona, produzida por diferentes espécies de fungos do gênero Fusarium, afeta os frangos apenas quando estes são expostos a níveis extremamente altos de contaminação. De modo geral, são observados efeitos imunossupressores, hepatotóxicos e nefrotóxicos, com queda no desempenho e nos ganhos de produção. Vários são os métodos laboratoriais que podem ser utilizados para a determinação de micotoxinas. Para o controle da contaminação, é necessário adoção de práticas agrícolas correta, com vistas à prevenção do crescimento de fungos. Após a contaminação de grãos e rações, métodos de descontaminação, biológicos, físicos e/ou químicos podem ser empregados, embora o processo físico com adsor...

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“…Dentre os zeólitos temos a bentonita sódica, utilizada na clarificação do vinho (CORAZZA; RODRIGUES; NOZAKI, 2001), na ração animal (LOPES et al, 2006), na clarificação de óleo, peneiras moleculares, na indústria de tintas e de cosméticos, adsorção de íons (SANTOS et al, 2002). Sua ampla aplicação industrial está relacionada ao alto poder de inchamento, cerca de 20 vezes seu volume inicial, aumentando as distâncias interplanares até cerca de 100 Å, com área superficial entre 30 e 76 m 2 /g (ROSSETTO et al, 2009;NEUMANN et al, 2002).…”

Section: Abstract Introduçãounclassified

Estudo do branqueamento de óleo de peixe utilizando-se a bentonita sódica através de planejamento fatorial

et al. 2011

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Adição de bentonita sódica como adsorvente de aflatoxinas em rações de frangos de corte

Cited by 11 publications

References 16 publications

Effects of mycotoxin adsorbents in aflatoxin B 1 - and fumonisin B 1 -contaminated broiler diet on performance and blood metabolite

Micotoxinas na produção de frangos de corte

Estudo do branqueamento de óleo de peixe utilizando-se a bentonita sódica através de planejamento fatorial

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