FAO’s 2 October 2026 release places the September dairy index at 119.1 points, 19.1% below a year earlier. Yet skim milk powder quotations were 33.1% above their year-earlier level. Cheese prices fell while milk powder prices rose and butter changed little. The industrial implication is that a nearly stable composite can hide opposing revenue signals for plants using the same raw-milk input.

Raw milk supplies both fat and protein, and processing routes produce connected outputs rather than independent products. Allocating more material to one line changes what is available for other products and coproducts. A processor therefore needs a component balance alongside sales prices. The economically relevant comparison is the net return from the complete output bundle after conversion costs, rather than the headline price of whichever product currently appears strongest.

Powder manufacture introduces energy and operating constraints because concentration and drying require additional processing. Higher powder quotations can improve the revenue side without guaranteeing higher contribution margins. Energy costs, dryer availability, packaging and quality specifications can absorb part of the increase. FAO describes sustained import demand and limited prompt availability, but supplies no factory energy bills or conversion yields. A claim about any producer’s profitability would exceed the evidence.

Cheese production involves a different inventory profile, including product-specific storage and maturation requirements. Falling export quotations can pressure returns on newly negotiated sales while older contracts temporarily cushion realized revenue. Inventory values and receivable periods matter as well as production costs. FAO identifies competition and seasonal export availability in its account; these market observations do not establish that every cheese plant has excess capacity or suffers the same margin reduction.

The accompanying series uses explicit August and September levels from FAO’s downloadable CSV: 119.2 and 119.1. The narrative’s rounded point-change description differs slightly from the displayed CSV values. Both observations are preserved as a current snapshot, with no reconstructed earlier value or invented historical vintage. A conditional operating outlook would examine component utilization, contracted product mix and energy exposure before interpreting the aggregate index as a procurement or production instruction. Possible rounding or series revisions are not established explanations here; the discrepancy is not reconciled.

The fat and protein balance also links revenues across products. Separating cream changes what remains available for skimmed products; assigning more input to one line can constrain another. A useful plant comparison would reconcile component recovery, by-product receipts, drying energy and packaging against the same raw-milk intake. A higher powder quotation alone cannot establish the best allocation if drying capacity or contracted butter deliveries bind. The release supplies no plant-specific yields or line constraints from which to calculate that allocation.

Procurement and sales must then be matched by currency, specification and delivery period. FAO’s international quotations use a 2014–2016 index base; points are not dollars per tonne or a factory invoice. September 2026 is the reference month and 2 October the release date. Actual component purchases, inventories and contracted product receipts would be needed to translate those signals into contribution. The CSV discrepancy described above remains unresolved; neither a revised factory margin nor a numerical production recommendation is inferred from it.