ANSC Feeds Practice Exam

Which group of cattle in first-last rotational grazing gets the more abundant forage supply?

1. Older group

2. Younger group

3. Equal distribution

4. Mixed-age group

The correct answer is: Older group

The older group of cattle typically receives a more abundant forage supply in a first-last rotational grazing system. This is because in such grazing systems, the management practice aims to allow for improved pasture recovery time. In this approach, grass is given a longer period to regrow after being grazed. Older cattle, which are generally more established and mature, are often placed in the grazing area last. This strategy allows younger grass to develop more fully, resulting in a greater quantity and quality of forage when the older group eventually grazes it. Older cattle are likely to benefit from this lush, nutrient-rich regrowth, as they can utilize the forage effectively when conditions are optimal. As the other options do not align with this grass recovery strategy, they do not provide the same advantages in terms of forage availability. The younger group may not experience the same quality if grazed before the forage has had adequate time to recover. An equal distribution would negate the benefits of managing recovery time, while a mixed-age group would complicate the benefits of growth because different age classes would graze under similar conditions without the targeted management of recovery.