ANSC 221 Final Exam Questions with Complete Solutions

What are the differences between grasses and legumes? advantages and disadvantages of each. Correct Answer-Grasses are mainly a source of Energy and legumes a source of protein. Legumes have a symbiotic relationship with a bacteria which allows it to utilize N from the air and turn it into ammonia. Legumes also improve soil fertility, are high in Ca, Vit a, P and trace minerals. high yield of palatable feed/acre possible. Often there can be a problem with bloat. Grasses have the ability to grow in most environments, stand being trampled on more, tolerant of grazing, prevent erosion, better root structure. low in mineral and vitamin content, might be sufficient though for many animals. Often palatable when immature. Loose a lot of protein/digestability when they mature. What are the common grass forages? Correct Answer-Kentucky blue grass, tall fescue, timothy, perennial rye grass, Indian grass, big bluestem, little blue stem, side oats grama, switch grass what are the common legume forages? Correct Answer-Alfala, red clover, crown vetch, sweetclover, white dutch clover, birdsfoot trefoil What are the characteristics of pastures, silages, hay? what are the principles regarding how they are made? Correct Answer-Pastures: fresh forage (grasses and legumes) eaten by grazing. Silage: preserved wet due to fermentation Hay: dried