Pig Raising Tools
Sow Productivity (PSY)
Pigs weaned per sow per year. It is the number that separates a piggery from a pet, and almost nothing written in Tagalog explains where it comes from.
Almost everybody trying to raise PSY reaches for a bigger litter. The arithmetic says
otherwise: 114 days of gestation are fixed and the nursing period is a deliberate trade, so
the only part of the cycle you can actually shorten is the empty days between weaning and
the next service. Those days are worth more than a piglet a litter, and they are the ones
nobody writes down.
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Live PH numbers
See the data behind this calculator
What a weanling is fetching right now — the price dashboard.
Read alongside
Farrowing calendar
The dates behind the cycle, including the return-to-heat window where the empty days start.
Sow or fattener?
PSY is the number that decides this, and most people decide it without one.
Why piglets die in the first week
Pre-weaning mortality is half of PSY, and most of it happens in seven days.