Ticks and tick-borne diseases affect animal and human health worldwide and are the cause of significant economic losses. Approximately 10% of the currently known 867 tick species act as vectors of a broad range of pathogens of domestic animals and humans and are also responsible for damage directly due to their feeding behaviour. The most important tick species and the effects they cause are listed. The impact on the global economy is considered to be high and although some estimates are given, there is a lack of reliable data. The impact of ticks and tick-borne diseases on animal production and public health and their control are discussed.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/2CCD9EAD34FA5E2FB3CD37DAAFFF7F56/S0031182004005967a.pdf/div-class-title-the-global-importance-of-ticks-div.pdf

The global importance of ticks.

Food systems contribute 19%–29% of global anthropogenic greenhouse gas (GHG) emissions, releasing 9,800–16,900 megatonnes of carbon dioxide equivalent (MtCO2e) in 2008. Agricultural production, including indirect emissions associated with land-cover change, contributes 80%–86% of total food system emissions, with significant regional variation. The impacts of global climate change on food systems are expected to be widespread, complex, geographically and temporally variable, and profoundly influenced by socioeconomic conditions. Historical statistical studies and integrated assessment models provide evidence that climate change will affect agricultural yields and earnings, food prices, reliability of delivery, food quality, and, notably, food safety. Low-income producers and consumers of food will be more vulnerable to climate change owing to their comparatively limited ability to invest in adaptive institutions and technologies under increasing climatic risks. Some synergies among food security, adaptati...

https://sustainabledevelopment.un.org/content/documents/881annurev.pdf

Climate Change and Food Systems

Rural development: putting the last first

https://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736(13)60843-0.pdf

Nutrition-sensitive interventions and programmes: how can they help to accelerate progress in improving maternal and child nutrition?

Acceleration of progress in nutrition will require eff ective, large-scale nutrition-sensitive programmes that address key underlying determinants of nutrition and enhance the coverage and eff ectiveness of nutrition-specifi c interventions. We reviewed evidence of nutritional eff ects of programmes in four sectors—agriculture, social safety nets, early child development, and schooling. The need for investments to boost agricultural production, keep prices low, and increase incomes is undisputable; targeted agricultural programmes can complement these investments by supporting livelihoods, enhancing access to diverse diets in poor populations, and fostering women’s empowerment. However, evidence of the nutritional eff ect of agricultural programmes is inconclusive—except for vitamin A from biofortifi cation of orange sweet potatoes—largely because of poor quality evaluations. Social safety nets currently provide cash or food transfers to a billion poor people and victims of shocks (eg, natural disasters). Individual studies show some eff ects on younger children exposed for longer durations, but weaknesses in nutrition goals and actions, and poor service quality probably explain the scarcity of overall nutritional benefi ts. Combined early child development and nutrition interventions show promising additive or synergistic eff ects on child development—and in some cases nutrition—and could lead to substantial gains in cost, effi ciency, and eff ectiveness, but these programmes have yet to be tested at scale. Parental schooling is strongly associated with child nutrition, and the eff ectiveness of emerging school nutrition education programmes needs to be tested. Many of the programmes reviewed were not originally designed to improve nutrition yet have great potential to do so. Ways to enhance programme nutrition-sensitivity include: improve targeting; use conditions to stimulate participation; strengthen nutrition goals and actions; and optimise women’s nutrition, time, physical and mental health, and empowerment. Nutrition-sensitive programmes can help scale up nutrition-specifi c interventions and create a stimulating environment in which young children can grow and develop to their full potential.

Maternal and Child Nutrition 3 Nutrition-sensitive interventions and programmes: how can they help to accelerate progress in improving maternal and child nutrition?

Investing in Animal Health Research to Alleviate Poverty

Livestock keeping is critical for many of the poor in the developing world, often contributing to multiple livelihood objectives and offering pathways out of poverty. Livestock keeping also affects an indispensable asset of the poor, their human capital, through its impact on their own nutrition and health. This paper outlines the linkages between livestock keeping and the physical well-being of the poor, and examines a number of commonly held beliefs that misrepresent livestock development issues related to these linkages. These beliefs limit the scope of intervention programs to promote livestock and limit their potential contribution to poverty reduction. Recognition of the complexity of the role livestock play in household decision-making and of the opportunities foregone due to these misconceptions can enhance the ability of livestock to contribute to human well-being in the developing world.

/pdf/invited-review-role-of-livestock-in-human-nutrition-and-62fpessrxf.pdf

Invited review: Role of livestock in human nutrition and health for poverty reduction in developing countries.

Improving the assessment of the economic impact of parasitic diseases and of their control in production animals

Vaccination services for people and livestock often fail to achieve sufficient coverages in Africa’s remote rural settings because of financial, logistic, and service delivery constraints. In Chad from 2000 through 2005, we demonstrated the feasibility of combining vaccination programs for nomadic pastoralists and their livestock. Sharing of transport logistics and equipment between physicians and veterinarians reduced total costs. Joint delivery of human and animal health services is adapted to and highly valued by hard-to-reach pastoralists. In intervention zones, for the first time ≈10% of nomadic children (>1–11 months of age) were fully immunized annually and more children and women were vaccinated per day during joint vaccination rounds than during vaccination of persons only and not their livestock (130 vs. 100, p<0.001). By optimizing use of limited logistical and human resources, public health and veterinary services both become more effective, especially at the district level.

/pdf/human-and-animal-vaccination-delivery-to-remote-nomadic-2ci5nm4f5e.pdf

Human and animal vaccination delivery to remote nomadic families, Chad.

Summary Livestock kept or produced in smallholder farming systems are an important component of the agricultural economy in the developing world. The role of livestock on smallholder farms varies widely, providing draught power for crop production or as a production activity for subsistence needs or market sale under systems ranging from extensive pastoralist to intensive, peri-urban feeder and dairy systems. A set of unique conditions and features characterise smallholder systems, and these need to be appreciated when assessing the strategies that have evolved for managing animal health in smallholder systems, and evaluating opportunities for improving disease control strategies. To provide a framework for discussing animal health issues and analytical methodogies, a typology of smallholder livestock and crop/livestock systems is developed. The typology considers livestock systems both in terms of the degree of intensificati on, as measured by market orientation and intensity of factor use, and in terms of importance within the household economy, as measured by contribution to household income. A number of characteristi cs are identified that distinguish smallholder systems from the commercialised systems of developed countries, including the multiple functions livestock serve, the integrated nature of livestock activities, multiple objectives of producers and lower capacity to bear risk at the household level, as well as poor infrastructure, markets, and access to information at the community level. Three representative smallholder livestock systems from Africa are described in detail, highlighting the relevant characteristics and the implications for analysing disease control strategies. Smallholder dairy systems in Kenya demonstrate the role of individual producer decision-making for animal health management in intensive, market-oriented systems, placing emphasis on farm-level risk and production management aspects of disease control. In extensive pastoralist systems where epidemic diseases are still important and infrastructure is poor, disease control primarily involves managing communal natural resources, requiring a different analytical approach. Finally, in crop farming systems using draught cattle, the livestock activity is an integrated component of crop production and this must be reflected in the approach used to evaluate draught animal health management. Continued development of analytical approaches and decision-support tools for disease control strategies adapted to the special characteristics of these systems will be needed as smallholder systems continue to intensify in areas with good market access, and those in marginal areas face increasing pressures to optimally manage the natural resource base.

https://web.oie.int/boutique/extrait/09mcdermott399424.pdf

Thomas F. Randolph

Papers

Investing in Animal Health Research to Alleviate Poverty

Invited review: Role of livestock in human nutrition and health for poverty reduction in developing countries.

Improving the assessment of the economic impact of parasitic diseases and of their control in production animals

Human and animal vaccination delivery to remote nomadic families, Chad.

The economics of optimal health and productivity in smallholder livestock systems in developing countries.