In the 1950s and early 60s the company began focusing more on the broiler markets. This included building broiler breeder houses. By the late 1950s Longenecker's had a breeder operation to produce all their own hatching eggs. This allowed the company to offer customers the exact breeds that they needed.
In the 1960's John Longenecker brought in the eventual next president and leader of the company, John Martin. John Martin was joined by the third generation, John Brubaker and Don Hilsher (John Longenecker's sons in law) to manage and operate the business.
In 2001 a new hatchery building was constructed on the lower part of the Market Street property. The new hatchery allowed the hatching capacity to increase and the current customers to grow their businesses as well. It also gave capacity to build new relationships with companies in the broiler industry.