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Intensive meat production a danger to food supply, warns FAO

By Ahmed ElAmin , 17-Sep-2007

A report, issued today by the UN's Food and Agriculture Organisation (FAO) about the increased risk of pathogen contamination in industrial meat production, serves as an advance warning to processors of a growing problem.

"Global animal food production is undergoing a major transformation that could lead to a higher risk of disease transmission from animals to humans," the FAO stated in a new report. The warning is particularly apt, as regulators around the world have been implementing laws requiring processors to develop traceability systems to determine the origin of their supplies all the way back to the farm. Such far-reaching traceability is important in tracing contamination incidents back to source to determine the extent of a problem. Fears over the meat supply chain have been hightened due to the spread of diseases such as bird flu and BSE. The risk of disease transmission from animals to humans will increase in the future due to human and livestock population growth, dynamic changes in livestock production, the emergence of worldwide agro-food networks and a significant increase in the mobility of people and goods, the FAO stated in the policy brief. As countries have become more affluent and the world's population continues to rise, demand for meat and other livestock products has grown substantially, the FAO stated. To satisfy this higher demand for meat products, livestock production and densities have significantly increased, often close to urban centres. Industrial animal production has become more concentrated, using fewer but more productive livestock breeds. "There is no doubt that the world has to depend upon some of the technologies of intensive animal food production systems," said FAO livestock policy expert Joachim Otte. "But excessive concentration of animals in large scale industrial production units should be avoided and adequate investments should be made in heightened biosecurity and improved disease monitoring to safeguard public health." The FAO identified pig and poultry production as the are the fastest growing and industrializing livestock sub-sectors, with annual production growth rates of 2.6 and 3.7 per cent over the past decade. As a consequence, in the industrialized countries, the vast majority of chickens and turkeys are now produced in houses with 15,000 to 50,000 birds. The trend towards industrialisation of livestock production is occurring rapidly in developing countries, where traditional systems are being replaced by intensive units, most notably in Asia, South America and parts of Africa. Industrial pig and poultry production relies on a significant movement of live animals. In 2005, for example, nearly 25 million pigs, more than two million pigs per month, were traded internationally. The movement of animals and the concentration of thousands of confined animals increase the likelihood of transfer of pathogens, the FAO stated. Confined animal houses also produce large amounts of waste, which may contain substantial quantities of pathogens. Much of this waste is disposed of on land without any treatment, posing an infection risk for wild mammals and birds. While the highly pathogenic H5N1 virus is currently of major global concern, the circulation of influenza A viruses (IAVs) in poultry and swine should also be closely monitored internationally, the FAO recommended. A number of IAVs are now fairly widespread in commercial poultry, and to a lesser extent in pigs, and could also lead to emergence of a human influenza pandemic. The FAO called upon meat producers to apply basic biosecurity measures. Production sites should not be built close to human settlements or wild bird populations, farms should be regularly cleaned and disinfected, the movements of staff and vehicles should be controlled and employees should be trained in biosecurity, the FAO stated.

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