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Steve Dunkley

Head of Knowledge Exchange (Interim)

AHDB Pork KE

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Reducing the excretion of phosphorus from growing and finishing pig systems: development of a Decision Support Tool

Home \ Research & Innovation \ Research \ Environment \ Reducing the excretion of phosphorus from growing and finishing pig systems: development of a Decision Support Tool

Research partner:Newcastle University

Sponsor: AHDB Pork-funded studentship (Vasilis Symeou)

Project duration: 2010 – 2013

 

Aims and objectives

  • To extend a current model of pig growth to predict nutrient excretion, namely Nitrogen (N) and Phosphorous (P), in the environment under different environmental and feeding scenarios, in growing and finishing pig systems
  • To be able to formulate pig diets that maximise N and P utilisation whilst minimizing N and P excretion to the environment 

Findings to date

  • The model was converted into a population one so that it would be able to predict P excretion of populations of pigs (as opposed to the response of the average pig)
  • The model found that an increase in the number of phases resulted in an overall decrease in the cumulative P excreted
  • It was concluded that phase feeding is a more sustainable strategy than sorting, in terms of P excretion  

Further information

Research into Action 15: Reducing phosphorus levels in grower and finisher diets

Symeou VEdwards SAKyriazakis I. (2012) Modelling digestibility of dietary phosphorus in growing and finish pigs. Journal of Animal Science90(4), 59-61.

Symeou VLeinonen I, Kyriazakis I. (2014) Modelling phosphorus intake, digestion, retention and excretion in growing and finishing pigs: Model description; Animal: An International Journal of Animal Bioscience 13, 1-10.

Symeou VLeinonen I, Kyriazakis I. (2014) Modelling phosphorus intake, digestion, retention and excretion in growing and finishing pig: Model evaluation; Animal: An International Journal of Animal Bioscience 13, 1-10.

Find out more about PhD student Vasilis Symeou here