Effect of low crude protein level in different phase feeding strategies on ammonia emission rates of finishing pig facilities

E.F. Hessel; H.F.A. van den Weghe

Effect of low crude protein level in different phase feeding strategies on ammonia emission rates of finishing pig facilities

In: Precision Livestock Farming â05

Authors:

E.F. Hessel

E.F. Hessel ¹Institute for Agricultural Engineering, University of Goettingen, Germany

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H.F.A. van den Weghe

H.F.A. van den Weghe ²Research Centre for Animal Production and Technology, University of Goettingen, Germany earkena@gwdg.de

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Type:: Chapter

Pages:: 81â88

DOI:: https://doi.org/10.3920/978-90-8686-548-2_010

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Ammonia volatilisation in houses for growing and finishing pigs should be reduced to protect the environment and to improve indoor air quality. The objective of the investigation was to examine the effect of various feeding strategies with decreased crude protein levels on the ammonia volatilisation in a fully slatted housing system for fattening pigs. In an insulated building with four identical mechanically ventilated compartments for fattening pigs, four feeding strategies with decreased crude protein (CP) levels were investigated. The following treatments were studied: Treatment 1, two phase feeding with two diets; treatment 2, two phase feeding with a reduced crude protein level in the finishing stage; treatment 3, multiphase feeding with a reduced crude protein level and weekly adaptation; treatment 4, multiphase feeding with a reduced crude protein level and daily adaptation.

Between the four treatments no significant differences were found for fattening performance parameters. Compared to treatment 1 multiphase feeding with daily adaptation of the mixing ratio reduced the amount of ammonia emission rate by 43 %. Multiphase feeding with decreased crude protein level results in a clearly improved indoor air quality.

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Precision Livestock Farming â05

E-Book ISBN:: 9789086865482

Publisher:: Wageningen Academic

Print Publication Date:: 10 Oct 2005

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- Life Sciences
  - General
  - Animal & Veterinary

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Effect of low crude protein level in different phase feeding strategies on ammonia emission rates of finishing pig facilities

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