IE 270 1st Edition Lecture 26Outline of Last Lecture I. Land of plenty in class film notes Outline of Current Lecture II. 4 classes of animal protein III. LivestockIV. Multi-functionality of livestock in smallholder agriculture V. Environmental burdens of livestock VI. Aquaculture Current Lecture4 classes of animal protein- Livestock- Poultry- Fish - Animal ProductsLivestock Benefits-Contribute 40% of value of agricultural output-Globally, 60% of rural households keep livestock-Multiple functionality in small holder agriculture-Provide essential protein and micronutrients in dietNegatives-High contribution of green house gases-Increasingly concentrated, excess waste-Lower efficiency than plant based foods-Utilizes large land areas and water inputs Multiple functionality of livestock in smallholder agriculture- Generates foodThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Collateral for credit- Consume insects and weeds- Power for plowing- Generate income- Store of wealth- Consume waste from crop production, food scraps- Produce manure (fertilizer)- TransportationEnvironmental burdens of livestock - Contribute less than 2% of global GDP but produces 18% of global greenhouse gas emissions - Grazing occupies 26% of world land area- Feed for animals uses 33% of arable cropland- Concentration of livestock production means that the manure product by animals of ten exceeds the absorptive capacity of local area- Livestock diseases interact with humans Aquaculture - Continues to grow more rapidly than all other animal producing sectors- Global leader is china—70% of global production- Average annual growth rate of 8.8%- Only 12% for capture fisheries- 2.8% for terrestrial farmed meat production systemsFish Polyculture: In China using carp- Silver & bighead eat plankton- Grass carp- Common
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