Maximising Milk Production from Pasture- 2013 Positive Farmers Conference. Brendan Horan, Teagasc. For anyone planning to expand. Teagasc scientists are crystal clear on what you should focus on to ensure that expansion leads to increased farm profits as well as more cows and more milk. “The core pillars of profitable milk production systems are: 1. High EBI dairy cattle and 2. Low cost, high productivity grazing systems.