Poultry research with different levels of protein and energy to maximize carcass yield and quality

3. Dietary Energy Density Dietary Protein Density

6. Cobb Sex-separate HighPS LowPS 3,335 kcal/kg 22.80 CP 3,245 kcal/kg 21.80 CP PRE-STARTER 1 – 11 d

7. TREATMENTS *Cobb-Vantress recommendations for maximized growth rate and feed efficiency 97 % energy 100% energy 94 % energy 92.5 % protein 85 % protein 100 % protein 107.5 % protein 115 % protein

8. ME Treatment TREATMENTS DIETS D BDD BD BBD B Rec CD ABCCDD ABCD AABBCD AB Mod C ACC AC AAC A Low VHigh High Rec Low VLow DBP Treatment

9. A B C D CORNER DIETS (Analyzed) 3,009 (kcal/kg) 20.70 CP Starter 11 – 20 d 3,169 (kcal/kg) 19.80 CP 3,014 (kcal/kg) 27.80 CP 3,094 (kcal/kg) 27.80 CP 2,909 (kcal/kg) 16.39 CP Grower 20 – 31 d 3,119 (kcal/kg) 17.41 CP 2,842 (kcal/kg) 23.41 CP 3,008 (kcal/kg) 22.31 CP 3,022 (kcal/kg) 16.09 CP Finisher 31 – 56 d 3,137 (kcal/kg) 16.78 CP 2,972 (kcal/kg) 20.76 CP 3,171 (kcal/kg) 21.52 CP

10. ME Treatment TREATMENTS DIETS D BDD BD BBD B Rec CD ABCCDD ABCD AABBCD AB Mod C ACC AC AAC A Low VHigh High Rec Low VLow DBP Treatment

14. Effect of Prestarter on BW PS Level P<0.0001 P<0.0001

15. Effect of Prestarter on Breast Yield at 42 d ( 2,135 g EBW) Breast (g) P<0.037

17. Effect of Sex on BW at 42 d P<0.0001 2.48 2.92 P<0.0001

18. Fatpad (g) Effect of Sex on Fat Pad at 42 d P<0.0001

19. P<0.0001 Breast (g) Effect of DBP on Breast Yield at 42 d P<0.0001

20. Effect of DBP on Fat Pad at 42 d Fatpad (g) P<0.0001

22. A B C D FEED PRICES OF CORNER DIETS HighPS LowPS $315.26 Starter $348.95 $333.70 $367.31 $324.68 Grower $360.31 $344.01 $379.72 $319.66 Finisher $354.10 $334.20 $369.42 $354.20/t $317.24/t PRE-STARTER

23. Relative Feed Prices

25. Optimum: 97% ME @102% rec DBP

26. Optimum Formulation* *% of Cobb-Vantress recommendations for maximized growth and feed efficiency 99 97 101 97 56 101 97 101 97 49 101 97 102 97 42 101 97 102 97 36 98 97 102 97 28 DBP ME DBP ME Age Whole Cutup

27. OPTIMAL DIETS (cut up scenario) 97% ME 102% DBP 3,011 (kcal/kg) 23.55 CP 2,911 (kcal/kg) 19.49 CP 3,015 (kcal/kg) 18.42 CP STARTER HighPS GROWER FINISHER 3,335 kcal/kg 22.80 CP

28. Optimal Energy:Protein ratios Cutup Market Optimal Cal:P ratio is lower than recommended for grower and finisher phases Whole Market Optimal Cal:P ratio is slightly higher for the starter and grower phases than for the cutup market ——————————— kcal ME / g CP ——————————— 16.1 16.0 15.8 15.7 17.1 Finisher 14.7 14.6 14.6 14.2 16.0 Grower 14.9 14.8 14.8 14.2 14.0 Starter Whole Cutup Whole Cutup Recommended Honourable mentions Optimal

31. Acknowledgements Poultry Industry Council for Research and Education

32. Thanks!

33. Prestarter Diets % 15.0 10.5 Wheat Grain 22.0 32.3 Soybean Meal 19.4 - Wheat Bran 2.3 - Corn Gluten Meal 5.6 5.8 Others (AA, Min, Vit, Binder) 0.006 0.6 Canola Oil 35.6 50.8 Corn Grain LowPS HighPS Ingredients

34. Corner Starter Diets % 5.8 3.0 - 19.7 21.5 10.0 40.0 StartB 5.7 0.3 - 25.0 22.0 - 47.0 StartA - - Corn Grain 41.0 38.3 Wheat Grain 32.6 31.6 Soybean Meal 17.8 24.0 Wheat Bran 5.8 5.8 Others (AA, Min, Vit, Binder) 2.8 0.3 Canola Oil - - Corn Gluten StartD StartC

35. Corner Grower Diets % 5.8 4.4 - 25.0 15.4 10.0 39.4 GrowB 5.7 1.1 - 25.0 16.2 2.0 50.0 GrowA - 10.0 Corn Grain 40.0 32.9 Wheat Grain 24.5 25.1 Soybean Meal 25.2 25.0 Wheat Bran 5.8 5.8 Others (AA, Min, Vit, Binder) 4.5 1.2 Canola Oil - - Corn Gluten GrowD GrowC

36. Corner Finisher Diets % 5.4 4.4 - 18.3 14.8 10.0 47.1 FinishB 5.3 1.8 - 25.0 15.1 - 52.8 FinishA 6.9 9.8 Corn Grain 38.9 35.3 Wheat Grain 23.2 22.6 Soybean Meal 20.8 25.0 Wheat Bran 5.5 5.4 Others (AA, Min, Vit, Binder) 4.7 1.9 Canola Oil - - Corn Gluten FinishD FinishC