Assessing three nitrogen use performance indicators for pig supply chains in East and Southeast Asia

U.A. Uwizeye, Pierre Gerber, R.P.O. Schulte, I.J.M. de Boer

Research output: Contribution to conferenceAbstractAcademic

Abstract

Pig supply chains are developing rapidly in East and Southeast Asia (ESEA), fuelled by population growth, growing incomes and urbanization that lead to increased demand for animal produce. Pig supply chains, however, are associated with losses of reactive nitrogen (Nr) to the environment at various stages of the chain. To benchmark livestock supply chains and identify improvement options, we previously developed a framework to assess Nr use efficiency at chain level. This framework compromises three indicators: life-cycle nitrogen use efficiency (life-cycle-NUEN), life-cycle net nitrogen balance (life-cycle-NNBN), and nitrogen hotspot index (NHIN). The aim of this study is to apply these three indicators to pig supply chains in ESEA. Preliminary results showed that the computed Life-cycle Nr use efficiency indicators vary greatly between backyard, intermediate and industrial supply chains. Industrial supply chains had relatively higher estimates of life-cycle-NUEN than intermediate and backyard supply chains. Our data showed a negative relationship between life-cycle-NNBN and NHIN demonstrating the presence of hotspots of Nr losses in backyard and intermediate supply chains, as compared to industrial supply chains. These differences between supply chains result from differences in the origin of feed material, feed conversion, manure management system and animal health status. This study demonstrates that there is a scope to improve the Nr use efficiency in pig supply chains in ESEA, especially by focusing on the optimization of fertilization of local feed crops and manure management systems. Further research is required to assess the potential effectiveness of each of these interventions.
Original languageEnglish
Publication statusPublished - 8 Dec 2016
Event7th International Nitrogen Initiative 2016 - Melbourne, Australia
Duration: 4 Dec 20168 Dec 2016

Conference

Conference7th International Nitrogen Initiative 2016
Abbreviated titleINI2016
CountryAustralia
CityMelbourne
Period4/12/168/12/16

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