How to improve flock results and feed conversion with feed, water, ventilation and KPI records

How can feed-stock accounting change FCR without changing bird growth?

Illustrative measured cycle, not a breed target: opening feed 8,000 kg + deliveries 120,000 kg − closing feed 9,200 kg = 118,800 kg accounted feed. With 72,000 kg liveweight sold, FCR = 1.65. Dividing deliveries alone by the same output gives 1.667, an accounting difference—not a biological improvement. State how transfers, residual feed and spillage are counted; compare the same period, harvest basis, age and mortality treatment. Recorded whole-flock feed must not receive an extra modeled mortality allowance.

Evidence checked 17 October 2026: Aviagen’s July 2011 FCR bulletin supports checking feed usage, liveweight records and wastage. Historical manufacturer guidance, not a universal target; human technical review of this addition remains pending.

FCR · Compare diagnostic options

Which KPIs should a commercial poultry farm record?

KPI	How it is calculated	Mainly for
FCR	Feed used ÷ live weight produced (or ÷ egg mass for layers)	Broilers, layers
Average daily gain	Weight change ÷ days	Broilers
Uniformity	Share of a weighed sample within an agreed range of the average	Broilers, pullets
Hen-day production	Eggs collected ÷ hens present × 100	Layers
Mortality and culls	Birds lost ÷ birds placed × 100, by week	All
Water-to-feed ratio	Litres of water ÷ kg of feed per day	All

Define each KPI once, in writing, so that every flock is measured the same way. Reference values come from your breeder company or integrator and differ by line, age and system.

How does feed management affect FCR?

• Check feed delivery records against bin levels so feed used is measured, not estimated.
• Watch for feed wastage at pans and troughs; adjust feeder height and fill level as birds grow.
• Record each feed batch and form (mash, crumble, pellet) and note when it changes.
• Formulation decisions belong with a qualified nutritionist; this guide does not give rations or additive doses.

Why is water the first thing to check?

Birds usually drink more than they eat, and a fall in water use often comes before a fall in feed intake. Install a water meter per house, record daily use, check line pressure and drinker height, and test water quality at the source and at the end of the line at intervals agreed with your adviser.

How do ventilation and temperature change feed conversion?

Birds that are too cold use feed to keep warm; birds that are too hot eat less and can suffer heat stress. Poor air quality, such as high ammonia or humidity, also affects performance. Log temperature and humidity at bird level, check that ventilation stages and cooling pads respond as designed, and review air speed in tunnel-ventilated houses with the tools your extension service provides.

How do you investigate a drop in performance?

1. Confirm the data: is the scale, water meter or feed record correct?
2. Find the first KPI that changed and the date.
3. Check events around that date: feed batch, power cut, equipment fault, weather, handling.
4. Walk the house at bird level: distribution, litter, drinkers, feeders, air.
5. If birds show signs of illness or mortality rises, contact your veterinarian before changing anything else.
6. Change one variable at a time and record the result as a farm trial.

Daily KPI record checklist

• Birds present, mortality and culls
• Feed delivered and bin level
• Water used (meter reading)
• Minimum and maximum temperature, humidity
• Sample weights (weekly) or eggs collected (daily)
• Events: feed change, faults, treatments prescribed by the veterinarian