| Feed conversion ratio (FCR) | 1.50–1.80 at market age, depending on strain, sex, live weight, and regional conditions | Total feed consumed ÷ total live weight gain; report both adjusted and unadjusted FCR where applicable | Verify nutrient density, pellet quality, feed intake, ingredient consistency, and accurate feed-weighing systems | Core target |
| Average daily gain (ADG) | Approximately 55–75 g/bird/day during the main grow-out period; assess by age and target market weight | Change in average live weight ÷ number of days in the measurement period | Match amino acid supply and energy level to the production phase; check water access, temperature, stocking density, and uniformity | Core target |
| Market live weight | Common global production range: 2.0–2.5 kg live weight, with local programs varying by market demand | Weekly sample weighing with a representative sample size and consistent weighing time | Evaluate ingredient supply, feed-phase transitions, transport distance, and slaughter-weight requirements before selecting a program | Context metric |
| Livability / cumulative mortality | Aim for cumulative mortality of ≤4–5% under well-managed commercial conditions | Daily mortality records, culls, cause-of-loss classification, and cumulative percentage at market age | Require documented biosecurity, vaccination, water hygiene, mycotoxin control, and rapid investigation of mortality spikes | Core target |
| Uniformity | Coefficient of variation (CV) of approximately ≤10–12% at market age; flock-specific limits may apply | Calculate body-weight CV from a representative sample; also track percentage within ±10% of flock average | Check chick quality, feeder and drinker access, pellet fines, stocking density, and phase-feed consistency | Control metric |
| Litter moisture | Generally target approximately 20–25% moisture; persistent levels above 30% indicate a management or health concern | Routine field assessment supported by periodic oven-dry or validated moisture-meter testing | Review water-line pressure, drinker height, ventilation, dietary mineral balance, gut integrity, and manure consistency | Gut-health proxy |
| Fecal consistency and wet-dropping rate | Consistent, formed droppings with no persistent increase in watery or undigested feed particles | Daily house observations, standardized scoring, and review of feed intake and litter condition | Screen for coccidiosis, enteric pathogens, feed rancidity, high dietary potassium, abrupt formulation changes, and poor water quality | Early-warning metric |
| Intestinal integrity | No persistent signs of enteritis, excessive mucus, intestinal friability, or abnormal digesta passage | Routine necropsy scoring, lesion monitoring, veterinary review, and periodic laboratory testing when indicated | Use a documented gut-health protocol covering coccidiosis control, pathogen monitoring, feed hygiene, and ingredient digestibility | Verification metric |
| Feed and water intake | Stable age-related intake pattern without unexplained declines; water-to-feed ratio commonly around 1.6–2.0:1, subject to climate | Daily meter readings, feed-bin records, and temperature-adjusted trend analysis | Require reliable supply continuity, water testing, clean storage, and contingency plans for heat stress or logistics disruption | Operational metric |
| Feed quality and stability | Consistent nutrient analysis, acceptable pellet durability, low fines, and no visible mold or rancid odor | Incoming-batch sampling, near-infrared or laboratory analysis, pellet durability testing, and mycotoxin screening | Set supplier specifications for moisture, crude protein, amino acids, energy, mycotoxins, oxidation, particle size, and delivery traceability | Sourcing gate |
| Program validation | Demonstrate repeatable improvement or maintenance of FCR, ADG, mortality, and gut-health indicators across comparable flocks | Use baseline-versus-program comparisons, matched houses, adequate flock numbers, and consistent statistical definitions | Request independent analytical data, batch traceability, local regulatory compliance, and a clearly defined monitoring plan before scale-up | Decision gate |