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

Notenbaert An, Groot Jeroen C.J., Herrero Mario, Birnholz Celine, Paul Birthe K., Pfeifer Catherine, Fraval Simon, Lannerstad Mats, McFadzean Jamie N., Dungait Jennifer A.J., Morris Joanne, Ran Ylva, Barron Jennie, Tittonell Pablo. 2020. Towards environmentally sound intensification pathways for dairy development in the Tanga region of Tanzania. Regional Environmental Change, 20 (4):138, 14 p.

https://doi.org/10.1007/s10113-020-01723-5

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Quartile : Q2, Sujet : ENVIRONMENTAL SCIENCES / Quartile : Q2, Sujet : ENVIRONMENTAL STUDIES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Géographie-Aménagement-Urbanisme-Architecture

Résumé : 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.

Mots-clés Agrovoc : développement agricole, ferme laitière, production laitière

Mots-clés géographiques Agrovoc : République-Unie de Tanzanie

Mots-clés complémentaires : Élevage laitier

Mots-clés libres : Livestock development, Dairy, Ex-ante impact assessment, Environmental sustainability, Cost-benefit analysis, Decision-making

Classification Agris : L01 - Élevage - Considérations générales
E20 - Organisation, administration et gestion des entreprises ou exploitations agricoles

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement hors UE : Consortium of International Agricultural Research Centers, Biotechnology and Biological Sciences Research Council

Projets sur financement : (GBR) Sustainable intensification of temperate and tropical livestock production

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