This research uses survey data to assess the effect of oxen as draft animals on agricultural productivity and farm agricultural income in Nicaragua. The results show that farms that use oxen to plow the land have higher productivity of beans than farms that use stick to plant crops. On average, using oxen increases farm’s beans output by 7.75 100-pound bags of beans, and hiring oxen increases farm’s beans output by 8.5 100-pound bags of beans. Farms that use oxen or hire oxen to plow the land have more planted area. The impact of using oxen to plow the land through farm planted area on farm agricultural gross income is 18.13 percent, and the impact of hiring oxen to plow the land through farm planted area on farm agricultural gross income is 25.55 percent.