Summary guide
Standards by age
Enter the flock age to see every standard for that week.
Week 20 · Day 140 · Photostimulation
Initiate sexual development; bodyweight, uniformity, fleshing and lighting.
Body weight & feeding
Female target BW
2,285 g
Weekly gain 170 g
Female feed
101 g/day
Developer
Male target BW
—
Not in references for this age
Uniformity
> 70%
> 70% (within ±10% of average)
Developer: 2800 kcal/kg · 15% CP · 0.63% dig. Lys · Ca 1.20%
Lighting
Rearing
8 h
2–4 lux · hold until photostimulation
Stocking density
- Pullets – open-sided rearing6 /m²
- Pullets – dark-out rearing7–10 /m²
- Males – open-sided rearing2.5 /m²
- Males – dark-out rearing3 /m²
Feeder space
Female
15 cm/bird
Round pan 10–12 · Oval 13–14 birds
Male
18 cm/bird
Round pan 8–10 · Oval 10–12 birds
Environment & water
Floor temperature
—
Beyond brooding table
Nipple flow
55–60 ml/min
Fleshing goals (females)
Score 2
<5%
Score 3
60%
Score 4
35%
#3 + #4
95%
Pelvic fat
>75%