Results from the clover and crossbreeding study conducted by Teagasc at Clonakilty have just been published in the Journal of Dairy Science.
The economic analysis shows that Jersey crossbred cows grazing a perennial ryegrass and white clover-based sward is the most profitable system, producing a net profit of €2,751/ha. This compares to a net profit of €2,639/ha for three-way cross and €2,632/ha for Holstein Friesian cows grazing the same sward.

For background, the study was conducted over four years and looked at three breeds – Holstein Friesian, Jersey-cross Holstein Friesian, and a three-way cross of Holstein Friesian, Jersey and Norwegian Red. The three breeds were grazing two different sward types – perennial ryegrass and perennial ryegrass plus clover.