EXSC 2122 Lecture Notes - Lecture 4: Antimicrobial Resistance, Foodborne Illness, Hydrogen Sulfide

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12 Oct 2016
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Predominant approach to meat, dairy, and egg production in the us and increasingly, the world. 9 billion farm animals slaughtered each year in us. Increased availability, affordability of animal products in us food supply. Low prices due to industrialization plus: federally subsidized feed crops, weak enforcement of environmental regulations, tax incentives, research investments, expanded infrastructure, externalized costs. Prior to 1930s: poultry, swine, cattle raised on small-scale, independently- owned farms, farms were diversified with mixed crops, animals raised in complementary ways. Occurs when companies take over or merge with other companies competing in the same enterprise. Waste from cattle and hog operations often stored in outdoor cesspits called lagoons. Waste not required to be treated to remove pathogens and chemical contaminants. 1 in 4 workers in indoor ifap facilities have respiratory illness. Bacterial toxins can cause impaired lung function, inflammation, asthma: hydrogen sulfide emissions implicated in numerous animal, human deaths.

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