The Risk of Mycotoxins Contamination of Dairy Feed and Milk on Smallholder Dairy Farms in Kenya
| Autor: | O. Olowofeso, T.P. Lanyasunya ., I.K. Lokwaleput ., L.W. Wamae ., Hassan Hussein Musa |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Aflatoxin
Nutrition and Dietetics business.industry technology industry and agriculture Public Health Environmental and Occupational Health food and beverages Aspergillus flavus Biology Contamination biology.organism_classification Crop Toxicology chemistry.chemical_compound Agronomy chemistry Agriculture Temperate climate Livestock business Mycotoxin Food Science |
| Zdroj: | Pakistan Journal of Nutrition. 4:162-169 |
| ISSN: | 1680-5194 |
| DOI: | 10.3923/pjn.2005.162.169 |
| Popis: | 4 Abstract: Mycotoxins are toxic secondary metabolites produced by fungi that thrive in warm humid environments. Because Kenyan climate is favourable for growth of mycotoxins causing moulds, the threat of mycotoxin related livestock and human poisoning is real and of major concern. This threat is made even more palpable by the fact that, staple diets in many Kenyan households are based on crops such as maize, which are highly susceptible to mycotoxins contamination. The objective of the current study was to highlight the existing but grossly ignored danger of mycotoxin contamination of dairy feeds possibly leading to animal and human poisoning. During the study, qualitative and quantitave information were obtained through extensive review of scientific articles, magazines and books touching on this subject. Consultations were also held with resource persons (Toxicologists) to help validate some of the assertions made by variou s authors. A very clear illustrated facts, as revealed by the current study are that, aflatoxin is one of the most widely occurring and dangerous of all mycotoxins known. The term aflatoxin refers to a closely related group of metabolites produced by toxigenic strains of Aspergillus flavus and A. parasiticus. Aflatoxins are potent carcinogenic, mutagenic, teratogenic, and immunosuppressive agents. Four different aflatoxins, B1, B2, G1 and G2, have been identified with B1 being the most toxic. Their contamination of agricultural feed grains poses a serious threat worldwide. Although occurrence and magnitude of mycotoxin contamination varies with geographical and seasonal factors and also with the conditions under which a food or feed crop is grown, harvested, and stored, those grown under tropical and subtropical conditions are more prone to contamination than those in temperate regions due to favourable humidity and temperature levels for mould growth (10 - 40 C, pH range of 4 - 8 and above 70% equilibrium relative humidity). Aflatoxin B1 is potent when o |
| Databáze: | OpenAIRE |
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