I was intrigued until I read this:

To the exact method used by Chinese scientists causing the mass-deaths of these millions of swine, Minister Skvortsova says, appears to be similar to those of US researchers blamed last year for the mass-deaths of cattle in Texas.
Preliminary tests on the Texas mass-death event revealed that the grass, an altered form of Bermuda grass known as Tifton 85, had mysteriously begun producing cyanide gas. The grass suspected of killing these cattle is not a GMO in the sense that food activists typically use, a Western report says, though it is a scientifically modified hybrid of African Bermuda grass and an earlier hybrid grass, Tifton 68 and while it was not developed through some of the more controversial gene splicing methods used in GMOs —such as, say injecting fish genes into tomatoes — it is technically considered a genetically modified plant.

Sounds like BS to me. Or am I wrong?