AN_SCI 1001 Lecture Notes - Lecture 1: Soil Fertility, Tallow
Document Summary
Chapter 1 : animal contributions to human needs. Per-capita calorie and protein supply: a(cid:374)i(cid:373)al produ(cid:272)ts (cid:272)o(cid:374)stitute appro(cid:454) 41% fat: co(cid:374)su(cid:373)ers i(cid:374) de(cid:448)eloped (cid:374)atio(cid:374)s deri(cid:448)e fro(cid:373) a(cid:374)i(cid:373)al produ(cid:272)ts. Over 50% protein and far: co(cid:374)su(cid:373)ers i(cid:374) de(cid:448)elopi(cid:374)g (cid:374)atio(cid:374)s deri(cid:448)e fro(cid:373) a(cid:374)i(cid:373)al produ(cid:272)ts, the us ranks higher than the world average for % of calories/proteins from animal sources, but about average for % of fat. Largely responsible for increased food production and allowing people to turn their focus to professions other than agriculture. However, 50% of people in developing countries are engaged in agriculture vs. 7% of people in developed. Improvements in productivity have occurred primarily bc people have had an incentive to progress under a free-enterprise system. Cereal grains are the most important source of energy in world diers: twice as important in developing countries. Milk and meat are the major animal products contibuted to the world supply of calories and protein.
