Towards environmentally sound intensification pathways for dairy development in the Tanga region of Tanzania

An Notenbaert, Jeroen C.J. Groot, Mario Herrero, Celine Birnholz, Birthe K. Paul, Catherine Pfeifer, Simon Fraval, Mats Lannerstad, Jamie N. Mcfadzean, Jennifer A.J. Dungait, Joanne Morris, Ylva Ran, Jennie Barron and Pablo Tittonell ()
Additional contact information
An Notenbaert: CIAT - International Center for Tropical Agriculture [Colombie] - CGIAR - Consultative Group on International Agricultural Research [CGIAR]
Jeroen C.J. Groot: WUR - Wageningen University and Research [Wageningen]
Mario Herrero: CSIRO - Commonwealth Scientific and Industrial Research Organisation [Australia]
Celine Birnholz: Plantix
Birthe K. Paul: CIAT - International Center for Tropical Agriculture [Colombie] - CGIAR - Consultative Group on International Agricultural Research [CGIAR]
Catherine Pfeifer: FiBL - Research Institute of Organic Agriculture - Forschungsinstitut für biologischen Landbau
Jamie N. Mcfadzean: Rothamsted Research - BBSRC - Biotechnology and Biological Sciences Research Council
Jennifer A.J. Dungait: Rothamsted Research - BBSRC - Biotechnology and Biological Sciences Research Council
Joanne Morris: Stockholm Environment Institute
Ylva Ran: Stockholm Environment Institute
Jennie Barron: SLU - Swedish University of Agricultural Sciences = Sveriges lantbruksuniversitet
Pablo Tittonell: UPR AIDA - Agroécologie et intensification durables des cultures annuelles - Cirad - Centre de Coopération Internationale en Recherche Agronomique pour le Développement

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Abstract: The gap between milk demand and domestic supply in Tanzania is large and projected to widen. Meeting such demand through local production of affordable milk presents an opportunity to improve the welfare of producers and market agents through the income and employment generated along the value chain (VC). Efforts to maximize milk yields, production and profitability need to be balanced with long-term sustainability. We combined environmental and economic ex-ante impact assessments of four intervention scenarios for two production systems in the Tanzanian dairy VC using the CLEANED model and an economic feasibility analysis. Intervention scenarios propose increases in milk production through (i) animal genetic improvement, (ii) improved feed, (iii) improved animal health and (iv) a package combining all interventions. Results show that economically feasible farm-level productivity increases of up to 140% go hand-in-hand with increased resource-use efficiency and up to 50% reduction in greenhouse gas (GHG) emission intensities. Absolute increases in water, land and nitrogen requirements in mixed crop-livestock systems call for careful management of stocks and quality of these resources. An overall rise in GHG emissions is expected, with a maximum of 53% increase associated with an 89% increase in milk supply at VC level. The CLEANED tool proved effective to evaluate livestock interventions that improve incomes and food security with minimal environmental footprint. Here, our simulations suggest that due to current low productivity, the greatest efficiency gains in combination with relatively low increases in total GHG emissions can be made in the extensive agro-pastoral dairy systems, which represent the majority of herds.

Keywords: République-Unie de Tanzanie; développement agricole; ferme laitière; production laitière; Livestock development; Dairy; Ex-ante impact assessment; Environmental sustainability; Cost-benefit analysis; Decision-making; Élevage laitier (search for similar items in EconPapers)
Date: 2020
Note: View the original document on HAL open archive server: https://hal.science/hal-05180130v1
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Published in Regional Environmental Change, 2020, 20 (4), pp.138. ⟨10.1007/s10113-020-01723-5⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-05180130

DOI: 10.1007/s10113-020-01723-5

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