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

Autor: J. Morris, Mats Lannerstad, Birthe K. Paul, Jeroen C.J. Groot, Jennifer A.J. Dungait, An Maria Omer Notenbaert, Ylva Ran, Pablo Tittonell, Mario Herrero, Jennie Barron, Celine A. Birnholz, Catherine Pfeifer, Jamie McFadzean, Simon Fraval
Přispěvatelé: Conservation Ecology Group, Tittonell group
Jazyk: angličtina
Rok vydání: 2020
Předmět:
010504 meteorology & atmospheric sciences
Markets and trade
010501 environmental sciences
Développement agricole
Air and water emissions
01 natural sciences
Animal Production Systems
Dairy
Agricultural science
Livestock development
Production (economics)
Environmental sustainability
Productivity
0105 earth and related environmental sciences
Dierlijke Productiesystemen
Global and Planetary Change
Ecological footprint
Food security
Cost–benefit analysis
Impact assessment
L01 - Élevage - Considérations générales
Cost-benefit analysis
Ex-ante impact assessment
Farm Systems Ecology Group
PE&RC
E20 - Organisation
administration et gestion des entreprises ou exploitations agricoles
Production laitière
Greenhouse gas
Sustainability
WIAS
Business
Processing
packaging and transportation
Exploitation laitière
Decision-making
Zdroj: Regional Environmental Change
Regional Environmental Change, 20(4)
Regional Environmental Change 20 (2020) 4
Regional Environmental Change, 20(4):138. SPRINGER HEIDELBERG
ISSN: 1436-3798
Popis: 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.
Databáze: OpenAIRE
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