*USDA is making another move toward an electronic identification system for livestock.  *Corn stunt disease is showing up in Texas, but it’s not expected to affect yields much.  *The outlook for cattle prices remains optimistic.  *The closure of Texas’ only sugar mill is getting a lot of attention from lawmakers.  *Spring is bringing optimism to farmers in the Texas Rolling Plains.  *May is expected to bring more rain and severe weather to Texas.  *The Food and Drug Administration is proposing new regulations for animal drug labeling.