Is producing more meat the answer to the world’s food problems?
What are the effects of overgrazing?
How can meat be produced more ___________________?
Rangelands
Many feel need to increase meat ___________________ to feed population
As incomes rise so does meat ___________________
Are grasslands in temperate and tropical ___________________ that provide foraging and browsing areas for animals
Cattle, Sheep, goats are on 42% of ___________________
Pastures are managed ___________________
___________________ resource
Producing meat
Meat products good source of ___________________
Per capita meat ___________________ doubled since 1950
Feedlots: animals are ___________________ for slaughter in densely populated confined areas
Concentrated Animal ___________________ Operations CAFOs = 43% world beef
CAFOs can negatively impact the environment and public health:
Manure and wastewater have the potential to contribute ___________________, such as nitrogen and phosphorus, organic matter, sediments, pathogens, heavy metals, hormones and ammonia, to the environment.
The environmental impacts of wastes include:
Nitrogen and ___________________which can contribute to low levels of dissolved oxygen (fish kills)
___________________ organic matter that can contribute to toxic algal blooms.
Contamination from runoff or leakage can contribute to illness by exposing people to wastes and pathogens in their drinking ___________________
Animal Feeding Operations
What to do with waste?
Open Lagoons?
Consume large amount of grain and fish instead of feeding on grass
1/3rd of world’s marine fish harvest is used for animal feed,
fishmeal and oil
Aquaculture
___________________ fish and shellfish for food, like crops
World’s fastest growing food production
What do you think are pros and cons of this technique?
There are many aquaculture methods & species,
some are sustainable
___________________: herbivore (plant eater) & omnivores (plant and animal eaters).
___________________thrive on inexpensive vegetable-based foods.
___________________, clams and musselsimprove water quality as they filter plankton out of the water for their food.
___________________: carnivores (animal eaters).
Salmon, tuna, and shrimp require feed that's made from wild fish.
Fish Farming
___________________: waste, diseases and parasites can freely spread to wild habitat. Farmed fish can escape and compete with wild fish for natural resources, interbreed with wild fish.
___________________: same concerns as cages/pens.
___________________: can destroy coastal habitat to build facility. Discharged untreated wastewater pollutes the environment and contaminates groundwater.
___________________: fish cannot escape, wastewater is treated, but are costly to operate and rely on electricity or other power sources.
___________________: when farmed in high densities with little current/tidal flow leads to the accumulation of waste and the possibility of out-competing native species for natural resources.
Fish Facts & Tips
Avoid farmed carnivore fish.
It takes 15-25 lbs wild fish to produce 1 lb farmed ___________________.
It takes 2-10 lbs of wild fish feed to produce 1 lb farmed ___________________.
Plus large water___________________
Chose wild caught over farmed carnivore fish.
US farm-raised, plant eating fish are much more sustainable than air flown salmon or tuna.
Include herring, sardines, US farmed catfish, barramundi, tilapia, shrimp, clams, oysters, and mussels.
Principles: small fish, live in large numbers close to shore, are herbivores.
Most fresh waters are ___________________ with PCBs and methyl mercury.
Overfishing
Tragedy of ___________________Not a new problem, but becoming global
Commercial Extinction
Adding to the problem are development along the coasts, wetland and estuary pollution, coral reef and mangrove forest destruction