No

1. Feeding Broiler in Early Life
Somchit Sooncharernying,PhD
Senior Poultry Nutritionist
Asia Pacific Region

2. Evolution of Broiler Genetic
Today

3. ~1.41
0.80
1.05
1.30
1.55
1.80
2.05
2.30
1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025 2030
FCR Improvement in FCR (2kg BW)

4. Role of Starter Feed
• Year 2000, the 1st 10 days is 26% of life of 2 kg broiler
(10/38)*100 = 26.3%
• Today, the 1st 10 days is 30% of life of 2 kg broiler
(10/33)*100 = 30.3%

5. Feeding Broiler in Early Life
• Feed intake:
• The single most stimulating factor to achieve good performance and gut health!
• Two stages when FI is very significant
• 1st 10 days of life, during brooding
• The remaining of grow-out cycle (stocking density dependent)

6. Feeding Broiler in Early Life
The first 7-10 days:
• 80% energy used for growth, only 20% for maintenance
• Broilers can increase BW 4 to 5x (from ~40g to ~200g)
• Good early feeding is essential to promote:
• Gut developmentand health status
• Muscle/skeletongrowth and development
• Immune systemdevelopment
• Improveddaily gain and FCR

7. Evolution of Absorptive Potential
On average – modern breeds ~55% more surface area
Mussini (2012)

8. Maiorka,et al., 2003
Villi with feed and water,
24 hours post hatch
Villi with NO feed and water,
24 hours post hatch
Intestinal Villi 24-hr Post-hatch

9. Poor brooding results in shorter villi and impacts upon the
absorptive capacity of the gut for the life of the bird
9
Well developed
Poorly developed
Gut Development in Young Chick

10. • Body Weight Monitoring
• Check for Crop Fill
Management – Early Life
Time after Placement (% Chicks with Full Crops)
2 hours 75
4 hours 80
8 hours >85
12 hours >95
24 hours 100
Target Crop Fill Assessment

11. Strategic Use of Feed Enzymes
Feed enzymes should be used to improve bird performance by:
• ↑ digestibility of feed ingredients
• Breaking down anti-nutritional factors
• Modulating the microbial flora
• ↓ viscosity of digesta

12. Other features of Starter Diets
• Highly digestible ingredients
• Adequate nutrient levels, (amino Acids, Vit E, Mn, Zn)
• Could benefit from probiotics - improve gut health
• Intake stimulants: feed form (good sieved crumbles, mini-pellets), high
Na

14. Aviagen 2019 Balanced Protein Profile
Age Starter Grower Finisher 1 Finisher 2
Dig. AA 0-10d 11-24d 25-42d 42-slaugther
Lysine % 1.28 1.15 0.98 0.93
Met & Cys Ratio* 74 76 78 78
Methionine Ratio* 40 41 42 42
Threonine Ratio* 67 67 67 67
Valine Ratio* 75 76 77 78
Isoleucine Ratio* 67 68 69 69
Arginine Ratio* 107 107 107 108
Tryptophan Ratio* 16 16 16 16

15. Particle Size preference of chicks from 0-10
Days

16. Feed sieve for broiler feed

17. Particle Sizes
Starter diet was separated into 4 fractions
Starter
Fractions (mm)
< 0.82 0.82 - 2.00 2.00 - 3.18 > 3.18

18. Poll: According to your experience, which
feed type resembles your starter feed?
• 1: Sample 1
• 2: Sample 2
• 3: Sample 3
• 4: Sample 4
1
4
3
2

19. Feeding
• Total of 6 pens
• Each pen had 4 feeders
• Each feeder contained a
different particle size.
1
4
3
2

20. 0
20
40
60
80
100
120
Grams
3.18 mm + 2 to 3.18 mm 0.816 to 2 mm Fines (<0.816 mm)
Intake Day 1-10
Feed intake results

21. 0
1000
2000
3000
4000
5000
6000
1 2 3 4 5 6 7 8 9 10
>3.18mm
2 to 3.18mm
0.82 to 2mm
<0.82mm
Age
Pen
Cumulative
Feed
Intake
(g)

22. Targets
Starter Grower Finisher
Form Crumb Pellet (3 mm) Pellet (3 mm)
>3 mm <15% >70 >70
2.0 – 3 mm <40%
1.0 – 2 mm <35%
<1.0 mm <10% <10 <10
Minimize!

23. Starter Crumble Feed

24. Conclusions
• Genetic Progress is still a continuous process
• Management and Nutrition need to keep on pace with the Genetic
progress

25. Gut Development /
Gut Health
Development of the
Ideal Microflora
Highly Digestible Raw
Materials
Feed Intake
Good Starter Diet
Brooding
Management
Good Crumble /
Mini-Pellets

26. Thank you
www.aviagen.com