Hendrix Genetics (ISA)
ISA Brown Layer Performance Chart
ISA Brown — the global benchmark for brown-shell egg production. Peak rate 96% with long persistency.
Peak production: 96% at 28 weeks
Eggs per hen housed/year: ~330
Egg weight at peak: 58.5 g
Performance objectives
Source: official breed performance objectives. Real-world results vary by management.
| Age (wk) | Rate (%) | Daily feed (g) | Egg weight (g) | Cum. mortality (%) |
|---|---|---|---|---|
| 18 | 5.0 | 105 | 45.0 | 0.5 |
| 20 | 35.0 | 110 | 48.0 | 0.8 |
| 22 | 75.0 | 113 | 52.0 | 1.1 |
| 24 | 90.0 | 115 | 55.5 | 1.4 |
| 28 | 96.0 | 116 | 58.5 | 2.0 |
| 32 | 95.0 | 117 | 60.5 | 2.6 |
| 40 | 92.0 | 118 | 62.5 | 3.6 |
| 50 | 88.0 | 117 | 64.0 | 4.8 |
| 60 | 84.0 | 115 | 65.0 | 6.2 |
| 70 | 79.0 | 112 | 65.5 | 7.6 |
| 80 | 73.0 | 110 | 66.0 | 9.2 |
| 90 | 65.0 | 108 | 66.5 | 10.8 |
Compare with other breeds
Lohmann Breeders
Lohmann LSL Lite
Lohmann LSL Lite — leader in white-egg production with very low feed intake and 95% peak.
View chart →
Hy-Line International
Hy-Line W-36
Hy-Line W-36 — reliable white-egg producer with long persistency.
View chart →
Hendrix Genetics
Bovans Brown
Bovans Brown — high egg weight (~66g at peak) for markets demanding L+ size.
View chart →
Hy-Line International
Hy-Line Brown
Hy-Line Brown — balanced performance, popular in markets demanding mid-size brown eggs.
View chart →
Compare actual performance against this standard.
Flockera benchmarks every flock against breed standard automatically and alerts on deviation — no manual lookup, no spreadsheets.