🐄 Cow Rumen pH and Ration Balance: Hay vs Grain, Saliva Buffering and Subacute Acidosis Lab — 2D Cross-Section and Phase Plane

2D companion of the cow rumen pH lab: a side cross-section of the cow with rumen compartments and VFA, saliva and outflow arrows, a pH/VFA time series and a forage share versus pH phase plane with the 5.6 acidosis threshold. Uses the same physics module as the 3D version.