TANDAG CITY, Surigao del Sur – A total of forty graduating students of the Caraga State University (CSU) attended the “Hands-on Training on Walang Aray sa AI: Artificial Insemination in Pigs” from September 4-5, 2017 (1st Batch) and September 6-7, 2017 (2nd Batch) in Tandag City, Surigao del Sur.