Levures en alimentation animale et leur rôle

Role des levures

1. Y-Mos | Trials

2. Broilers (42 days) University of Leuven, Belgium Code: AIF/BRO/ZTC/W/0635 Animals Number : 360 (2 treatments x 6 replicates x 2 sexes) Gender : 50% cocks, 50% hens Treatments : Avilamycine 10 ppm Y-Mos 1000 ppm (day 0-14) 500 ppm (day 15-42)

3. Broilers (42 days) University of Leuven, Belgium 3220 3070 ME poultry (kcalkg) 11.9 % 9.6 % Crude fat 20.5 % 21.5 % Crude protein 100 ppm 100 ppm Nutrase Xyla 1 ppm 1 ppm Diclazuril 5.0 % 5.0 % Full fat soy beans 7.7 % 7.1 % Animal fat 25.6 % 27.7 % Soy bean meal 56.2 % 56.5 % Wheat Finisher Starter

4. Broilers (42 days) University of Leuven, Belgium Supplementing Y-MOS results in comparable zootechnical performances as the group receiving the antibiotic growth promoter. 2067 2094 1,61 1,61 1,58 1,57 1800 1900 2000 2100 2200 Avilamycin Y-Mos BW (g) 1,35 1,45 1,55 1,65 FC Body weight (g) FC FCc (2kg)

5. Broilers (42 days) University of Leuven, Belgium Code: AIF/BRO/ZTC/W/0930 Animals Number : 960 (5 treatments x 6 replicates x 2 sexes) Gender : 50% cocks, 50% hens Feed Starter Finisher Wheat + + Soy bean meal + + Corn + + Fish meal + + Belfeed + + Crude protein 20.9 % 20.0 % Crude fat 5.0 % 8.8 %

6. Broilers (42 days) University of Leuven, Belgium 5 4 3 2 1 1000 ppm 2000 ppm Medium chain fatty acids 500 ppm 200 ppm 1000 ppm 300 ppm Prestarter - - Y-Mos Nutracid Essential 500 ppm 200 ppm 1000 ppm 300 ppm Y-Mos Nutracid Essential 500 ppm 300 ppm 1500 ppm 1000 ppm Medium Chain Triglycerides Lactose + + Lactic acid day 14-42 day 5-14 day 1-4

7. Broilers (42 days) University of Leuven, Belgium 2307 2200 2379 2337 2315 1,77 1,81 1,76 1,73 1,80 1,65 1,73 1,61 1,6 1,67 2000 2100 2200 2300 2400 2500 Lactic acid MCT + lactose Y-Mos N. Essential Prestarter Y-Mos N. Essential MCFA BW (g) 1,50 1,60 1,70 1,80 1,90 FC Body weight (g) FC FCc (2kg)

8. Broilers (42 days) University of Leuven, Belgium Combining Y-Mos and Nutracid Essential gave the best results No extra benefit from feeding a special prestarter during the first 4 days of life Supplementing lactic acid or MCFA didn’t reach the performance level obtained by the combination Y-mos / Nutracid Essential The vegetable fat as a source of MCFA didn’t meet the expectations The amount of MCFA was 30 – 40 % lower than the amount supplied in treatment 5 The MCFA profile was different from treatment 5

9. Broilers (41 days) Catholic University Leuven, Belgium Code: AIF/BRO/ZTC/W/0951 Animals : Number = 576 3 treatments x 12 repeats x 16 animals Treatments : day 1-14 day 15-41 Nutracid Essential 300 ppm 200 ppm Y-Mos 1000 ppm 500 ppm Probiotic (Bacillus) 100 ppm 20 ppm Probiotic (Enterococcus) 100 ppm 20 ppm Overview

10. Broilers (41 days) Catholic University Leuven, Belgium 3060 2815 ME br (kcal/kg) 9.4 5.5 Crude fat 19.8 22.7 Crude protein 100 ppm 100 ppm Belfeed B1100MP 7.3 3.1 Fat 10.0 30.0 Corn 21.5 28.6 Soy bean meal 49.8 30.5 Wheat Finisher (%) Starter (%)

11. Broilers (41 days) Catholic University Leuven, Belgium The combination Nutracid Essential & Y-Mos showed to be the best group, compared to 2 other alternatives. 2504 2456 2433 1,70 1,70 1,71 1,50 1,52 1,54 2100 2200 2300 2400 2500 2600 N. Essential Y-Mos Probiotic (Bacillus) Probiotic (Enterococcus) BW (g) 1,30 1,40 1,50 1,60 1,70 1,80 FC Body weight (g) FC FCc (2kg)