6.5 Meat & Fish Production

Meat Production

most consumed meats

pork

poultry

beef

meat production is increasing

cheaper animal feeds

improved transport

higher per capita incomes

Industrialized Meat Production Harms the Environment

how is it produced?

livestock grazing on grass in unfenced rangelands and enclosed pastures

industrialized, intensive factory farms that involve raising large numbers of animals bred to gain weight quickly

feedlots- outdoor intense feeding

factory farms- huge buildings of crowded pens and cages

some animals are fed soybean, fishmeal, or fish oil, some of these feed is doctored with growth hormones and antibiotics to accelerate livestock growth

healthy risks

growth hormones and antibiotics enter the human food chain with potential health risk

even more of a concern is antibiotic resistance

same antibiotic given to human for the same bacteria results with the drug having no effect as the pathogen is already immune

problems

habitat destruction

overgrazing

water consumption

water pollution

climate change

Huge amounts of water are used to irrigate the crops that feed livestock

livestock waste is washed away straight into waterways leading to eutrophication and pollution due to antibiotics, hormone and pesticides

meat production= more greenhouse gases than all of world's vehicles combined

Fisheries and Aquaculture can Harm Aquatic Ecosystems

problems with fisheries

overexploitation

species like tuna and cod are endangered

CO2

the world's fishing fleets use about 12.5 units of energy to put 1 unit of food energy from seafood on the table

fish contamination

many fish are contaminated with toxins like heavy metals, PCBs and Dioxins

Over killing

A third of all fish caught in oceans is used to make fishmeal/ fish oil to feed farmed fish and livestock

bottom trawling

trawler fishing boats drag large nets weighed down with chains to harvest bottom-feeding fish and shellfish, destroying seafloor habitat

problems with aquaculture

some species produce large amounts of waste that damages aquatic ecosystems (eutrophication)

important habitat is often destroyed to make way fro fish farms

farmed fish can be contaminated by pesticides meant to kill water pests or leached from farm soils

farmed fish are often fed large amounts of antibiotics that damage the ecosystem and promote antibiotic resistance

Producing Food Sustainably

reduce desertification

spread feeding and watering areas out so crowds of cattle don't run areas into mud= soil erosion

do not feed cattle antibiotics and growth hormones

only eat line-caught fish

eat less meat, fish and shellfish products