The batching process is the operational stage in feed manufacturing during which individual ingredients are weighed out in the specific quantities required by a formulation, in preparation for mixing. Batching may be performed manually for smaller operations, but most commercial feed mills use automated batching systems controlled by formulation software, with ingredients weighed on dedicated scales (macro ingredients) or specialized micro-dosing equipment (for vitamins, minerals and other low-inclusion-rate ingredients).

Batching accuracy is fundamental to finished feed quality and, in the case of medicated feeds, regulatory compliance — errors in batching weights propagate directly into the finished product, since no amount of careful mixing afterward can correct an ingredient that was weighed incorrectly at the batching stage.

Automated batching systems typically operate on a target-weight basis for each ingredient, with the control system opening and closing feed gates or adjusting feeder speed as the scale reading approaches the target weight, often using a two-stage approach (fast initial filling followed by a slower, more precise "dribble" feed as the target is approached) to balance batching speed against final weighing accuracy.

Scale calibration and verification are essential, ongoing maintenance requirements for any automated batching system, since a scale that has drifted out of calibration will consistently produce batches with systematic weighing errors that may not be obvious from any single batch but accumulate into meaningful formulation deviations across many batches if not caught and corrected through regular calibration checks.

Batch record-keeping — documenting the actual weight delivered for each ingredient in every batch, not just the target weight specified by the formulation — provides the traceability foundation that supports quality investigations, regulatory audits and recall response if a problem is later identified with a specific batch or ingredient lot.

Batch sequencing — the order in which ingredients are added during batching — is also an important operational consideration, particularly for managing drug carryover risk between different medicated and non-medicated formulations, and for ensuring liquid or sticky ingredients are introduced at a point in the process where they will mix effectively rather than causing clumping or uneven distribution.