Layers Phase feeding, protein and amino acids

1. Phase feeding in layers

2. Layers
• Layers according to age, level of production
• Referred as reduction in protein and amino
acid level of the diet as bird progress through
a laying cycle.
• Concept of phase feeding is, as birds get older
their feed intake increases , their egg
production decreases

3. Nutrient Phase I Phase II Phase III
ME k cal/kg 2500 2450 2450
CP 17.5 16 15.5
Methionine 0.40 0.30 0.30
Lysine 0.80 0.70 0.70
Ca 3.6 4.0 4.0
Available P 0.35 0.30 0.30
Phase feeding

4. • Two reasons of decrease in CP and
metheonine
• to reduce feed cost
• To reduce egg size
• Because CP & Methionine increases Egg size

5. Phase Feeding
Age in
weeks
Egg
production
CP Methionine Calcium P
<35 wks 90 17 0.35 3.8 0.42
45 85 16 0.32 4.0 0.40
55 80 15.5 0.31 4.1 0.38
70 75 15.0 0.30 4.2 0.36
80 70 14.5 0.29 4.3 0.34