ANSC 1111 Lecture Notes - Lecture 15: Lignin, Asthma, Photosynthesis
Document Summary
Various studies show that 10 to 44% of workers exposed to animals will develop allergy symptoms within three years. Share of land use for agricultural purposes has decreased 11% since 1949. Most of agricultural land is grassland pasture and range, followed by cropland and then grazed forestland. Ndf (neutral detergent fiber) - digestible cell wall. Adf (acid detergent fiber) - indigestible cell wall. Lignin - indigestible, increases with plant maturity. Indigestible by everything except for the microbes within termites. C3 - first product of photosynthesis is 3-c. Cool, moist or hot, moist climate (temperate) C4 - first product of photosynthesis is 4-c. A why to differentiate grasses is by the way they photosynthesize. Another is when they are most able to grow (cool season or warm season) Higher amount of protein earlier in the growing season. Fiber will increase as plant ages and gets taller. Wheat losses (leaves tend to fall off in the pasture, which means protein is lost)
