Publikationsdatenbank

Effect of phytase and xylanase on growth and bone mineralisation in broilers fed wheat based diets (2013)

Art

Poster

Autoren

Kühn, Imke

Bedford, Mike

Männer, Klaus (WE 4)

Kongress

19th European Symposium on Poultry Nutrition

Potsdam, 26. – 29.08.2013

Quelle

19th European Symposium on Poultry Nutrition (ESPN) : Potsdam, Germany ; August 26-29, 2013

Potsdam: World's Poultry Science Association, 2013 — S. 1–4

Sprache

Englisch

Verweise

URL (Volltext): https://www.wpsa.com/index.php/publications/wpsa-proceedings/2013/19th-espn

Kontakt

Institut für Tierernährung

Königin-Luise-Str. 49
14195 Berlin
+49 30 838 52256
tierernaehrung@vetmed.fu-berlin.de

Abstract / Zusammenfassung

The efficacy of two levels of phytase alone or in combination with xylanase was studied in 350 male broilers (7 treatments, 2 pens with 25 birds each) fed wheat-soybean meal-based mash diets. Diets were adequate (PC, d1-14: 0.7 % P; 0.9 % Ca and d15-35: 0.6 % P; 0.85 % Ca) or reduced in P and Ca level (NC, d1-14: 0.5 % P; 0.8 % Ca and d15-35: 0.4 % P; 0.65 % Ca). The NC diets were also reduced in energy (0.4 MJME N/kg) and were supplemented with 0, 500, and 1500 FTU/kg phytase and 0 or 16,000 BXU/kg xylanase. Performance was evaluated weekly until d35 and left tibias collected (n=12) for mineral analyses. Phytase and xylanase improved BW compared to the NC birds (P<0.05). Birds fed 1500 FTU/kg phytase or phytase plus xylanase achieved higher BW than birds fed the PC diets (P<0.05). FCR was superior in birds fed 1500 FTU/kg phytase plus xylanase (1.33) when compared to NC birds (1.46, P<0.05). Tibia ash was greatest in the PC birds (3.2g/bone). Phytase without or with xylanase improved tibia ash of birds fed NC diets (1.85g/bone) by 29 to 50% (P<0.05).
The phytase tested compensated for the dietary nutrient reductions employed especially when added at high level or in combination with xylanase.