A risk assessment study of the occurrence and distribution of aflatoxigenic Aspergillus flavus and aflatoxin B1 in dairy cattle feeds in a central northern state, Nigeria

Omeiza, Gabriel K.; Kabir, Junaidu; Kwaga, J. K. P.; Kwanashie, C. N.; Mwanza, Mulunda; Ngoma, Lubanza

doi:10.1016/j.toxrep.2018.08.011

Cited by 24 publications

(17 citation statements)

References 44 publications

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“…Rodrigues et al [21] reported the highest level of AF in compounded dairy feed and raw materials for making compounded feed in Nigeria at 435.9 µg/kg and a mean of positive of 115 µg/kg [21]. However, another study by Omeiza et al [35] on compounded dairy feed and pasture showed a lower mean of 10.5 µg/kg, with 66.4% of the samples exceeding the EU regulatory limit. In the study, concentrates had the highest incidence of AFB1 at 93% with dry pasture having 60% and pasture mixed with concentrates having an incidence of 86.9%, indicating concentrates as the major source of AF.…”

Section: West Africamentioning

confidence: 96%

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A Review of the Impact of Mycotoxins on Dairy Cattle Health: Challenges for Food Safety and Dairy Production in Sub-Saharan Africa

Kemboi

Antonissen

Ochieng

et al. 2020

Toxins

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Mycotoxins are secondary metabolites of fungi that contaminate food and feed and have a significant negative impact on human and animal health and productivity. The tropical condition in Sub-Saharan Africa (SSA) together with poor storage of feed promotes fungal growth and subsequent mycotoxin production. Aflatoxins (AF) produced by Aspergillus species, fumonisins (FUM), zearalenone (ZEN), T-2 toxin (T-2), and deoxynivalenol (DON) produced by Fusarium species, and ochratoxin A (OTA) produced by Penicillium and Aspergillus species are well-known mycotoxins of agricultural importance. Consumption of feed contaminated with these toxins may cause mycotoxicoses in animals, characterized by a range of clinical signs depending on the toxin, and losses in the animal industry. In SSA, contamination of dairy feed with mycotoxins has been frequently reported, which poses a serious constraint to animal health and productivity, and is also a hazard to human health since some mycotoxins and their metabolites are excreted in milk, especially aflatoxin M1. This review describes the major mycotoxins, their occurrence, and impact in dairy cattle diets in SSA highlighting the problems related to animal health, productivity, and food safety and the up-to-date post-harvest mitigation strategies for the prevention and reduction of contamination of dairy feed.

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Section: West Africamentioning

confidence: 96%

“…AF and FUM were the most prevalent mycotoxins in Ghana (72% and 94%, respectively) and Nigeria (100% and 89%, respectively) [21,35]. Rodrigues et al [21] reported the highest level of AF in compounded dairy feed and raw materials for making compounded feed in Nigeria at 435.9 µg/kg and a mean of positive of 115 µg/kg [21].…”

Section: West Africamentioning

confidence: 99%

A Review of the Impact of Mycotoxins on Dairy Cattle Health: Challenges for Food Safety and Dairy Production in Sub-Saharan Africa

Kemboi

Antonissen

Ochieng

et al. 2020

Toxins

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“…In 1993, the International Agency for Research on Cancer (IARC) determined there was sufficient evidence to classify AFB 1 as a group 1 human carcinogen [3,4]. Further, recent and ongoing risk assessments have confirmed to impact of AFB 1 in human health and as an ongoing exposure problem in people as well as in plant and animal foods for human consumption [[5], [6], [7], [8]]. Covalent adduction of AFB 1 to lysine residues in serum albumin (AFB 1 -lys) represents a biomarker of internal dose, which reflects recent dietary exposure (up to ˜3 months) and has been strongly associated with several health outcomes such as growth stunting in children and liver cancer [[8], [9], [10], [11]].…”

Section: Introductionmentioning

confidence: 99%

Association between aflatoxin-albumin adduct levels and tortilla consumption in Guatemalan adults

et al. 2019

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Highlights AFB 1 a carcinogen found in maize, Guatemala’s main staple, the relationship of maize intake to serum AFB 1 -albumin adducts levels is novel. Among 461 Guatemalan adults found a median maize intake of 344.3 grams per day and a median serum AFB 1 -albumin adduct level was 8.4 pg/mg albumin. A statistically significant association between tortilla consumption and AFB 1 -albumin levels (ptrend=0.01) was found. These findings indicate that tortilla may be an important source of AFB 1 exposure in the Guatemalan population.

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“…A ocorrência de AFLAs têm sido relatada em grãos, rações e silagem de grãos (MOSS, 1998;O'BRIEN et al, 2005;SASSAHARA;NETTO;YANAKA, 2005;OMEIZA et al,2018;DADZIE et al, 2019), sendo preocupante, uma vez que o sistema digestivo dos animais não é suficiente para degradar essas toxinas (OBREMSKI et al, 2009). A metabolização da AFLAB 1 ocorre no fígado, através de um conjunto de enzimas do citocromo P 450 , que são consideradas hemoproteínas e têm como função a conversão desses compostos…”

Section: Aflatoxinas Em Leite E Produtos Lácteosunclassified

Bactérias Ácido Lácticas Na Descontaminação De Aflatoxinas Em Leite Bovino: Uma Revisão

KRAUS¹,

Santos²,

Dors³

et al. 2020

Ciência, Tecnologia E Inovação: Do Campo À Mesa

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Resumo As aflatoxinas são compostos químicos tóxicos produzidos por fungos do gênero Aspergillus que podem contaminar grãos e cereais, base para rações utilizadas em bovinos. A aflatoxina M 1 , derivada da hidroxilação da aflatoxina B 1 , é encontrada no leite, mas a aflatoxina B 1 também tem sido relatada e precisa ser avaliada, pois é mais tóxica que a aflatoxina M 1. Assim, o objetivo deste trabalho foi revisar o efeito do uso de bactérias ácido láticas na descontaminação de aflatoxinas B 1 e M 1 presentes no leite e derivados lácteos. A aplicação de bactérias ácido láticas em ensaios de descontaminação de aflatoxinas tem sido promissor. Entretanto, a redução dos níveis de aflatoxinas presente no alimento depende da bactéria que será utilizada, bem como sua concentração, meio onde será realizado o ensaio, nível de contaminação inicial, tempo de contato entre micro-organismo e a aflatoxina, e a estabilidade desta ligação. Palavras-Chave: aflatoxinas B 1 e M 1 , descontaminação, leite, processamento de alimentos.

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A risk assessment study of the occurrence and distribution of aflatoxigenic Aspergillus flavus and aflatoxin B1 in dairy cattle feeds in a central northern state, Nigeria

Abstract: Graphical abstract

Cited by 24 publications

References 44 publications

A Review of the Impact of Mycotoxins on Dairy Cattle Health: Challenges for Food Safety and Dairy Production in Sub-Saharan Africa

A Review of the Impact of Mycotoxins on Dairy Cattle Health: Challenges for Food Safety and Dairy Production in Sub-Saharan Africa

Association between aflatoxin-albumin adduct levels and tortilla consumption in Guatemalan adults

Bactérias Ácido Lácticas Na Descontaminação De Aflatoxinas Em Leite Bovino: Uma Revisão

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