Results of an international phosphorus digestibility ring test with broiler chickens

Publikation: Forskning - peer reviewTidsskriftartikel

DOI

  • Markus Rodehutscord
    Markus RodehutscordInstitute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany markus.rodehutscord@uni-hohenheim.de.
  • O Adeola
    O AdeolaDepartment of Animal Sciences, Purdue University, West Lafayette, IN 47907.
  • R Angel
    R AngelDepartment of Animal and Avian Sciences, University of Maryland, College Park, MD 20742.
  • P Bikker
    P BikkerWageningen University & Research, Wageningen Livestock Research, 6700 AH Wageningen, The Netherlands.
  • E Delezie
    E DelezieAnimal Sciences Unit, Institute for Agricultural and Fisheries Research (ILVO), 9090 Melle, Belgium.
  • W A Dozier
    W A DozierDepartment of Poultry Science, Auburn University, Auburn, AL 38649.
  • M Umar Faruk
    M Umar FarukDSM Nutritional Products, 68128 Village-Neuf, France.
  • M Francesch
    M FranceschIRTA, Mas de Bover, 43120 Constantí (Tarragona), Spain.
  • C Kwakernaak
    C KwakernaakSchothorst Feed Research BV, 8200 AM Lelystad, The Netherlands.
  • A Narcy
    A NarcyINRA-UR0083, Recherches Avicoles, 37380 Nouzilly, France.
  • C.M. Nyachoti
    C.M. NyachotiDepartment of Animal Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2.
  • O A Olukosi
    O A OlukosiMonogastric Science Research Centre, Scotland's Rural College, Edinburgh, EH9 3JG, UK.
  • A Preynat
    A PreynatAdisseo - Cern, 6 route noire, 03600 Malicorne, France.
  • B Renouf
    B RenoufSAS Euronutrition, Domaine Expérimental le Pavillon, 72240 Saint Symphorien, France.
  • A Saiz Del Barrio
    A Saiz Del BarrioTrouw Nutrition R&D Poultry Research Centre, 45950 Casarrubios del Monte, Spain.
  • K Schedle
    K SchedleInstitute of Animal Nutrition, Livestock Products and Nutrition Physiology, University of Natural Resources and Life Sciences, Vienna, 1190 Vienna, Austria.
  • W. Siegert
    W. SiegertInstitute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany.
  • S Steenfeldt
  • M M van Krimpen
    M M van KrimpenWageningen University & Research, Wageningen Livestock Research, 6700 AH Wageningen, The Netherlands.
  • S M Waititu
    S M WaitituDepartment of Animal Science, University of Manitoba, Winnipeg, MB, Canada R3T 2N2.
  • Maren Witzig
    Maren WitzigInstitute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany.

The objective of this ring test was to investigate the prececal phosphorus (P) digestibility of soybean meal (SBM) in broiler chickens using the trial protocol proposed by the World's Poultry Science Association. It was hypothesized that prececal P digestibility of SBM determined in the collaborating stations is similar. Three diets with different inclusion levels of SBM were mixed in a feed mill specialized in experimental diets and transported to 17 collaborating stations. Broiler chicks were raised on commercial starter diets according to station-specific management routine. Then they were fed the experimental diets for a minimum of 5 d before content of the posterior half of the ileum was collected. A minimum of 6 experimental replicates per diet was used in each station. All diets and digesta samples were analyzed in the same laboratory. Diet, station, and their interaction significantly affected (P < 0.05) the prececal digestibility values of P and calcium of the diets. The prececal P digestibility of SBM was determined by linear regression and varied among stations from 19 to 51%, with significant differences among stations. In a subset of 4 stations, the prececal disappearance of myo-inositol 1,2,3,4,5,6-hexakis (dihydrogen phosphate)-P; InsP6-P) also was studied. The prececal InsP6-P disappearance correlated well with the prececal P digestibility. We hypothesized that factors influencing InsP6 hydrolysis were main contributors to the variation in prececal P digestibility among stations. These factors were probably related to the feeding and housing conditions (floor pens or cages) of the birds in the pre-experimental phase. Therefore, we suggest that the World's Poultry Science Association protocol for the determination of digestible P be should extended to the standardization of the pre-experimental period. We also suggest that comparisons of P digestibility measurements among studies are made only with great caution until the protocol is more refined.

OriginalsprogEngelsk
TidsskriftPoultry Science
Vol/bind96
Sider (fra-til)1679–1687
ISSN0032-5791
DOI
StatusUdgivet - jul. 2017

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