Desempenho e plumagem de frangos de corte intoxicados por aflatoxinas

Giacomini, Leandro; Fick, Fabiana Andréia; Dilkin, Paulo; Mallmann, Carlos Augusto; Rauber, Ricardo Hummes; Almeida, Carlos

doi:10.1590/s0103-84782006000100036

Cited by 15 publications

(9 citation statements)

References 14 publications

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“…The relative weights of the heart, liver, gizzard and pancreas were also analyzed in this study; however, the treatments had no impact on these characteristics (data not shown). This result contradicts the findings of Giacomini et al (2006), who analyzed the relative weights of organs and carcasses and found that the size of hearts and livers of birds that were fed diets with aflatoxin increased; spleen and gizzard showed no significant difference in relative weight; and the weight of carcasses of birds that were fed diets with aflatoxin significantly reduced. The lack of impact on the relative weight of organs in this study might be explained by the dose of aflatoxin used.…”

Section: Discussioncontrasting

confidence: 78%

Effects on meat quality and black bone incidence of elevated dietary vitamin levels in broiler diets challenged with aflatoxin

Mota

Hermes²,

Araújo

et al. 2019

Animal

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Vitamins play an essential role in broiler nutrition. They are fundamental for normal metabolic and physiological process, and their requirements for poultry are not fixed and can be affected by multiple factors. In contrast, mycotoxins are a challenging issue because they hinder performance and the immune system. Vitamin supplementation above minimum requirements would permit improvement in productive potential, health, bone and meat quality in a situation of mycotoxin challenge. The objective of this study was to determine the influence of optimum vitamin nutrition in diets contaminated with aflatoxin in broilers from 1 to 44 days of age. A total of 1800 Cobb 500 male chicks were randomized to 15 sets of eight treatment groups, each containing 15 birds using a 2 × 2 × 2 factorial design (commercial vitamin levels and high vitamin levels, two levels of aflatoxin – 0 and 0.5 ppm with binder levels of 0 and 10 000 mg/kg). The mash diets were corn and soybean meal based, formulated according to commercial practices. Feed intake, weight gain and feed conversion were analyzed for birds from 1 to 44 days of age. To determine carcass characteristics (carcass yield, breast yield and leg yield) and black bone syndrome, two birds were slaughtered from each group at 45 days. Other analyses included breast tenderness, water loss by dripping and malonaldehyde concentrations. The results demonstrated that broilers that were fed high levels of vitamins showed better weight gain, feed conversion, carcass yield and breast yield than broilers that were fed diets with commercial vitamin levels (P < 0.05); also, broilers that were fed diets containing 0.5 ppm aflatoxin had lower weight gain, carcass yield and breast yield (P < 0.05). The use of 10 000 mg/kg of binder improved (P < 0.05) feed conversion throughout the rearing period. We conclude that aflatoxin negatively affects performance and carcass yield; however, feeding optimum vitamin nutrition improved these performance traits.

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Section: Discussioncontrasting

confidence: 78%

Effects on meat quality and black bone incidence of elevated dietary vitamin levels in broiler diets challenged with aflatoxin

Mota

Hermes²,

Araújo

et al. 2019

Animal

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“…Considerando a contaminação alimentar, a presença de aflatoxinas gera distúrbios metabólicos e afetam órgãos como fígado, causando degeneração gordurosa (o que não foi observado em necropsia), podendo também se estender ao intestino, baço, linfonodos, coração e rins, principalmente em animais monogástricos como aves e suínos. Aves intoxicadas tem como sinais clínicos anorexia, diminuição do ganho de peso, letargia, palidez da crista, barbela e pés e sinais nervosos, entre outros, sem haver comprometimento dos folículos de empenamento (2,7 mg kg -1 de aflatoxina na ração), porém, o peso das penas poderá ser significativamente afetado (Giacomini et al, 2006). Neste trabalho ocorreu o comprometimento do empenamento no grupo experimental (Figura 1), porém, sem deformidades morfológicas quando da necropsia apesar das aves se apresentarem congestas e com pele mais escura em relação ao grupo controle (Figura 1).…”

Section: Resultsunclassified

Silage Acid Waste of Fish in Broiler

Venturoso¹,

Reinicke²,

Silva³

et al. 2016

Acta Vet Bras

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The process of production of silage from fish waste may represent an important source of protein and energy for broilers, and rationally allocate this residue which is normally discarded erroneously. This work aimed to evaluate weight gain and morphometric parameters of broilers fed with feed made from fish viscera silage. For the composition of the experimental diet was counted with: 65.61 % of the silage fish waste, 30.39 % soybean meal, 2.20 % of calcined bone meal , 1.40 % soda and 0 , 30% vitamin mineral premix , in order to provide levels mixture of 19.2 % CP 0.898 % Ca, 0.528% P disp. and 3874 kcal kg- 1 of EB. However, during the experimental period the broilers they had died. In another experiment involving non-nutrient additives, but using the same source of silage, had same result. It is suspected that the level of conservation of raw material can be related to the case on the basis of having the potential to produce biogenic amines.

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“…Ocorre aumento de tamanho no fígado, baço e rins, enquanto que a bursa e o timo diminuem de tamanho. Para Giacomini et al (2006) Na aflatoxicose não ocorrem erosões na moela, apesar de muitas aves com lesões características dessa micotoxicose também apresentarem esse tipo de alteração (Santurio, 2000). A irritação no proventrículo e na moela ocorre devido ao contado direto da aflatoxina durante o processo de digestão (Huff et al, 1986).…”

Section: Efeitos Da Aflatoxina Nas Avesunclassified

Efeitos da aflatoxina na produção avícola: Revisão

Bochio

Takahashi

Groff

et al. 2017

Pubvet

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RESUMO.O Brasil nos últimos anos vem se destacando na produção avícola e, atualmente, vem ocupando o segundo lugar na produção de carne e primeiro lugar em exportação. Porém, apesar desse cenário promissor, ainda há determinados problemas a serem resolvido, para cada vez mais otimizar o setor. Um exemplo disso, podemos citar a presença de fungos produtores de micotoxinas nas rações de frangos, principalmente devido à contaminação da matéria prima, mas especificamente os cereais. As micotoxinas são toxinas produzidas por fungos e tem sua proliferação relacionada a condições ambientais. As aflatoxinas são as principais micotoxinas a afetar a avicultura, são produzidas por fungos do gênero Aspergillus, sendo a aflatoxina B1 a mais tóxica. Os efeitos das aflatoxinas podem variar de acordo com a idade, sexo, composição da ração, estado sanitário das aves. Os animais mais jovens são os mais susceptíveis aos efeitos das aflatoxinas, ocasionando prejuízos a saúde e aos índices zootécnicos dos mesmos.Palavras chave: Fungos, micotoxinas, avicultura, desempenho produtivo Effects of aflatoxin on poultry production: Review ABSTRACT. In recent years, Brazil has been a major player in poultry production and is currently the second largest meat exporter. However, despite this promising scenario there are still certain problems to be solved, to increasingly optimize the industry. As an example, we can mention the presence of mycotoxin-producing fungi in chicken diets, mainly due to the contamination of the raw material, but specifically the cereals. Mycotoxins are toxins produced by fungi and have their proliferation related to environmental conditions. Aflatoxins are the main mycotoxins that affect poultry farming, are produced by fungi of the genus Aspergillus, aflatoxin B1 being the most toxic. The effects of aflatoxins may vary according to the age, sex, feed composition, health status of the birds. Younger animals are the most susceptible to the effects of aflatoxins, causing health damage and zootechnical indexes.Keywords: Fungi, mycotoxins, poultry farming, productive performance Efectos de aflatoxina en la producción avícola: Revisión RESUMEN. Brasil en los últimos años viene destacándose en la producción avícola y, actualmente, ocupa el segundo lugar en la producción de carne y primer lugar en exportación. Sin embargo, a pesar de este escenario prometedor, todavía hay ciertos problemas a resolver, para cada vez más optimizar el sector. Un ejemplo de ello, podemos citar la presencia de hongos productores de micotoxinas en las raciones de pollos, principalmente debido a la contaminación de la materia prima, pero específicamente a los

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Desempenho e plumagem de frangos de corte intoxicados por aflatoxinas

Cited by 15 publications

References 14 publications

Effects on meat quality and black bone incidence of elevated dietary vitamin levels in broiler diets challenged with aflatoxin

Effects on meat quality and black bone incidence of elevated dietary vitamin levels in broiler diets challenged with aflatoxin

Silage Acid Waste of Fish in Broiler

Efeitos da aflatoxina na produção avícola: Revisão

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