AEST Animal Science Specialist Practice Exam 2025 - Complete Preparation Resource

Alfalfa is widely recognized as the most common roughage in the West and Midwest regions due to its high nutrient density and widespread cultivation. It is a legume that is favored for its ability to fix nitrogen in the soil, which enhances soil health and fertility. Furthermore, alfalfa contains high levels of protein, vitamins, and minerals, making it an excellent forage option for livestock such as dairy cows and beef cattle. The plant's growth habits also allow for multiple cuttings throughout the growing season, providing a consistent supply of high-quality feed. Its palatability and digestibility make it a preferred feed choice among livestock producers in these areas.

In contrast, while other choices may serve as roughage sources, their prevalence and suitability do not match that of alfalfa in these regions. Timothy grass, for example, is often used in horse hay and certain small animal diets but is not as commonly utilized for larger livestock. Sweet clover can be found in these regions but does not have the same level of adoption or effectiveness as alfalfa for feeding purposes. Corn silage, on the other hand, is primarily used in dairy and beef production but is not classified as roughage in the same way as legume forages like alfal