Dairying


A pastoralist milks her goat, Borana, Ethiopia (photo credit: ILRI/Zerihun Sewunet).

Milk and milk products are essential in the diets of the Borana pastoral community in Ethiopia. However, traditional handling and processing of dairy products using basic equipment and infrastructure coupled with a preference for raw milk consumption pose potential health risks to consumers.

A new research study published in the Journal of Dairy Science (Nov 2020) reports on the testing of a community-based training intervention to improve the knowledge, attitudes and practices of women in the Borana pastoral area of Ethiopia regarding hygienic handling and safe consumption of milk.

The intervention consisted of 16 hours of training on good milk production practices and prevention of milk-borne diseases using locally-tailored content. A total of 120 women who produce and sell milk products were trained and their knowledge, attitudes and practices assessed at three stages: before, immediately after and six months after training.

Overall, training increased the knowledge score of the participants from 75.6% before training to 91.4% immediately after training and 90% six months after training. The attitude score significantly improved from 58.8% before training to 64.7% immediately after training. Likewise, there was an observed increase in the trainees’ understanding of correct milk handling practices from 49.5% before training to 64.7% six months after training.

“Future training interventions should be complemented by locally adaptable technologies, provision of incentives and creation of an enabling environment including improved access to clean water and sanitation facilities,” the study authors recommend, adding that this could include practical sessions at the homesteads or herding places of the pastoralists.

Citation

Amenu, K., Agga, G.E., Kumbe, A., Shibiru, A., Desta, H., Tiki, W., Dego, O.K., Wieland, B., Grace, D. and Alonso, S. 2020. MILK Symposium review: Community-tailored training to improve the knowledge, attitudes, and practices of women regarding hygienic milk production and handling in Borana pastoral area of southern Ethiopia. Journal of Dairy Science 103(11): 9748–9757. https://doi.org/10.3168/jds.2020-18292

Photo credit: A pastoralist milks her goat, Borana, Ethiopia (ILRI/Zerihun Sewunet)

Milk cans at Ol Kalou Dairy Plant, Kenya (photo credit: ILRI/Paul Karaimu).

A new research report (Oct 2020) by scientists from the International Institute for Environment and Development (IIED) and the International Livestock Research Institute (ILRI) reviews the status and policy contexts of informal milk markets in Kenya, Tanzania and Assam (India) to better understand the opportunities for a policy innovation based on training and certification to overcome market access barriers for sellers of informal milk by improving the health and safety practices of informal milk traders, thereby addressing policymakers’ concerns. It is based on an extensive review of available literature and a small number of expert interviews and contributions.

Citation

Blackmore, E., Guarín, A., Alonso, S., Grace, D. and Vorley, B. 2020. Informal milk markets in Kenya, Tanzania and Assam (India): An overview of their status, policy context, and opportunities for policy innovation to improve health and safety. ILRI Project Report. Nairobi, Kenya: ILRI.

Photo credit: Milk cans at the Ol Kalou Dairy Plant, Kenya (ILRI/Paul Karaimu)

Customers at a milk bar in Ndumbuini in Kabete, Nairobi (photo credit: ILRI/Paul Karaimu).

A new study published in Preventive Veterinary Medicine has investigated the governance structure of the Nairobi dairy value chain and the challenges faced by stakeholders and how these impact on food safety.

The dairy value chain of Nairobi consists mostly of small-scale independent enterprises that operate within a complex interlinked system. In this complexity, the coordination and power structures of the system may have major influences on the management of dairy food safety.

The study was carried out by a team of scientists from the International Livestock Research Institute, the Kenya Directorate of Veterinary Services, Royal College London, the University of Liverpool and the University of Nairobi as part of a research project on the epidemiology, ecology and socio-economics of disease emergence in Nairobi.

The researchers collected qualitative data through focus group discussions and key informant interviews based on a dairy value chain mapping framework previously developed. Thematic analysis enabled identification of governance themes, key challenges and analysis of their implications on food safety. Themes were organized depending on their association with farmers (informal settlement or peri-urban), dairy cooperatives, dairy traders, processing companies, retailers or government officers.

The identified governance themes included (i) weak linkage between government and farmers, (ii) inadequate compliance with government regulations by traders and retailers, (iii) emphasis on business licenses and permits for revenue rather than for food safety, (iv) multiple licensing resulting in high business cost and lack of compliance, (v) fragmented regulation, (vi) unfair competition and (vii) sanctions that do not always result in compliance.

The key challenges identified included (i) inadequate farmer support, (ii) harassment of traders and retailers and (iii) high business costs for traders, retailers, dairy cooperatives and large processors.

The implication of governance and challenges of food safety were, among others, (i) inadequate extension services, (ii) insufficient cold chain, (iii) delivery of adulterated and low milk quality to bulking centres, (iv) inadequate food safety training and (v) lack of policies for management of waste milk.

The range of issues highlighted is based on stakeholders’ perceptions and reflects the complexity of the relationships between them. Many of the governance themes demonstrate the linkages that are both beneficial or confrontational between the formal and informal sectors, and between industry and regulatory authorities, with possible direct food safety consequences.

The findings of the study give indications to decision-makers of potential governance areas that could help improve efficiency and food safety along the dairy value chain.

Citation
Kiambi, S., Onono, J.O., Kang’ethe, E., Aboge, G.O., Murungi, M.K., Muinde, P., Akoko, J., Momanyi, K., Rushton, J., Fèvre, E.M. and Alarcon, P. 2020. Investigation of the governance structure of the Nairobi dairy value chain and its influence on food safety. Preventive Veterinary Medicine 179: 105009.

Photo credit: Customers at a milk bar in Ndumbuini in Kabete, Nairobi (ILRI/Paul Karaimu)

Maize. Mozambique, Tete province, Pacassa village (photo credit: ILRI/Mann).

In sub-Saharan Africa, contamination of dairy feed with mycotoxins has been frequently reported. Mycotoxins pose a threat to animal health and productivity and are a hazard to human health as some mycotoxins and their metabolites are excreted in milk, such as aflatoxin M1.

A new review paper published in the journal Toxins (April 2020) describes the major mycotoxins, their occurrence and their impact in dairy cattle diets in sub-Saharan Africa, highlighting the problems related to animal health, productivity and food safety and the latest post-harvest mitigation strategies to prevent and reduce contamination of dairy feed with mycotoxins.

Citation
Kemboi, D.C., Antonissen, G., Ochieng, P.E., Croubels, S., Okoth, S., Kang’ethe, E.K., Faas, J., Lindahl, J.F. and Gathumbi, J.K. 2020. A review of the impact of mycotoxins on dairy cattle health: Challenges for food safety and dairy production in sub-Saharan Africa. Toxins 12(4): 222.

Photo credit: Maize crop, Pacassa village, Tete province, Mozambique (ILRI/Mann)


Farmer herds his three bulls in Nikhekhu Village, Dimapur, Nagaland, India (photo credit: ILRI/Stevie Mann).

Rapid urbanization in India has led to expansion of peri-urban fringes, where intensive, industry-style livestock rearing has led to emerging vulnerabilities at the human-animal-environment interface.

To better understand the health system and farm-level factors that influence the risk of transmission of bovine tuberculosis in animals and humans, a qualitative study was undertaken among smallholder dairy farms in peri-urban zones in three cities in India: Guwahati, Ludhiana and Bangalore. Data were collected through literature reviews, expert consultations and in-depth interviews.

The study, published in BMC Public Health (March 2019), found that farmers consulted veterinarians as a last resort after home remedies and quacks had failed. Damage control measures, especially with respect to selling or abandoning sick animals, added to the risk of disease transmission.

Although civic authorities believed in the adequacy of a functioning laboratory network, end users were aggrieved at the lack of services. Despite the presence of extension services, knowledge and awareness were limited, promoting risky behaviour.

In addition, the absence of policies on the management of bovine tuberculosis may have influenced stakeholders not to consider it to be a major animal and public health concern.

“Evidence is needed not only about the burden and risks, but also on possible options for control applied in the local Indian setting,” the authors say.

The study also recommends that the identified gaps in knowledge be addressed through collaborative research and One Health interventions involving both animal and human health sectors.

Access the article Community, system and policy level drivers of bovine tuberculosis in smallholder periurban dairy farms in India: A qualitative enquiry by A.S. Chauhan and others.

Typical milk bar in Kenya

One of Kenya’s many ‘milk bars’ (photo credit: ILRI/Dave Elsworth).

Training of milk vendors in Kenya’s informal dairy sector could be a pathway to progressively bring the informal sector under the food safety regulatory systems, says a new study by scientists from the International Livestock Research Institute and the International Institute for Development and Environment.

The informal dairy sector in Kenya contributes to nutrition security, health and livelihoods. However, concerns over milk safety have seen the sector de-legitimized. Training and capacity-building of those operating in the sector has the potential to deliver on multiple development outcomes, over and above improved food safety.

The study, which is published in Global Food Security (September 2018), examined the incentives and challenges to operating in the informal dairy sector in two urban areas in Kenya (Eldoret and Kisumu) and the perceived benefits and socio-economics effects of training. A survey of informal dairy vendors and testing of milk was also carried out in the two regions to assess milk safety and handling practices and their relation to training.

It was noted that the informal dairy sector in Kenya is an important source of livelihood opportunities, especially for women. Training of milk vendors improved sales, reduced milk losses and helped expand the businesses of vendors; however, the long-term effects of training on milk quality are not evident. Accessibility and clear incentives to participate in training could maximize impact and sustainability.

Based on this qualitative assessment, it is recommended that rigorous scientific studies be conducted to confirm and measure the magnitude of those impacts on health, nutrition and societal outcomes derived from training and capacity building activities in the informal dairy sector.

Access the journal article, Beyond food safety: Socio-economic effects of training informal dairy vendors in Kenya

Citation
Alonso, S., Muunda, E., Ahlberg, S., Blackmore, E. and Grace, D. 2018. Beyond food safety: Socio-economic effects of training informal dairy vendors in Kenya. Global Food Security 18: 86–92.

Panel discussion at the 'Growing with dairy' meeting held at ILRI Nairobi, 9 March 2018

Erastus Kang’ethe (standing) facilitates a panel discussion at the ‘Growing with Dairy’ meeting. The panel members (left to right) are Johanna Lindahl from ILRI, Humphrey Mbugua from the Association of Kenya Feed Manufacturers and Margaret Aleke from the Kenya Bureau of Standards (photo credit: ILRI/Emmanuel Muunda).

Representatives from the dairy sector in Kenya met at the Nairobi campus of the International Livestock Research Institute (ILRI) in March 2018 for a one-day meeting organized to present the research findings and plans of two dairy projects that ILRI is undertaking in collaboration with other partners: Measuring and mitigating the risk of mycotoxins in maize and dairy products for poor consumers in Kenya (MyDairy) and MoreMilk: making the most of milk (MoreMilk).

The meeting, dubbed Growing with Dairy, brought together 33 participants representing different stakeholder groups in Kenya’s dairy sector including industry, government, consumers, academia and development organizations.

Presentations by the principal investigators of the MyDairy and MoreMilk projects discussed various activities and interventions aimed at improving the dairy sector in Kenya and boosting the health and economic benefits that Kenyans derive from the sector.

The meeting also provided an opportunity to disseminate research findings, receive feedback on ongoing and planned activities, and align project objectives with the needs of public and private actors in the dairy sector in Kenya.

The MyDairy project was funded by the Ministry of Foreign Affairs, Finland and implemented between 2012 and 2018 in two phases: an initial four-year phase followed by a second phase of 1.5 years. The project aimed at mitigating the risks of aflatoxins in the dairy value chain in Kenya.

The MoreMilk project is a five-year initiative (2016–2021) funded by the Bill & Melinda Gates Foundation and the United Kingdom government that works to upgrade milk hygiene and quality standards in the informal dairy value chain and maximize economic, health and nutrition benefits, especially for the poorest communities in Nairobi.

Download the Growing with Dairy meeting report

ILRI news

Kenya farm boy drinking milk

Kenyan boy drinking milk (photo credit: ILRI/Dave Elsworth).

A new research paper by scientists at the International Livestock Research Institute (ILRI) and partner organizations confirms that milk, meat and eggs are widely consumed by poor people in Kenya’s capital city of Nairobi: these animal-source goods make up nearly 40% of the food budget and half of this is spent on dairy products.

Economic analysis revealed a high propensity to consume animal-source foods and elasticities showed that, if their prices could be lowered, consumption of animal-source foods would rocket, benefiting both the nutritional status of poor consumers and the livelihoods of small-scale livestock producers.

Abstract
‘Malnutrition, including undernutrition and micronutrient deficiencies, is a chronic problem in most developing countries. Animal-source foods (ASFs) provide essential sources of proteins and micronutrients, yet little is known about ASF consumption patterns or household preferences towards animal-source products among low-income populations. This is particularly critical for malnourished children…

View original post 960 more words

Aflatoxin-contaminated groundnut kernels

Aflatoxin-contaminated groundnut kernels from Mozambique (photo credit: IITA).

A special issue of the African Journal of Food, Agriculture, Nutrition and Development (AJFAND) published in July 2016 and sponsored by the International Livestock Research Institute (ILRI) features 12 peer-reviewed scientific articles on aflatoxins in eastern Africa.

The three broad objectives of the special issue are to understand the health consequences of aflatoxins, characterize the extent of the problem and identify key elements to underpin the way forward to mitigation.

The papers, listed below, are all open access and the PDFs are freely available for download at the AJFAND website.

Editorial
Aflatoxins in East Africa: The importance of getting the full picture (http://hdl.handle.net/10568/76526)

Understanding the health impacts

Extent and location of the problem

  • Aflatoxin B1 occurrence in millet, sorghum and maize from four agro-ecological zones in Kenya (http://hdl.handle.net/10568/76499)
  • Prevalence of aflatoxin in feeds and cow milk from five counties in Kenya (http://hdl.handle.net/10568/76501)
  • Survey of informal milk retailers in Nairobi, Kenya and prevalence of aflatoxin M1 in marketed milk (http://hdl.handle.net/10568/76502)
  • Assessment of pre-harvest aflatoxin and fumonisin contamination of maize in Babati District, Tanzania
  • Aflatoxin and fumonisin contamination of marketed maize and maize bran and maize used as animal feed in northern Tanzania
  • Mapping aflatoxin risk from milk consumption using biophysical and socio-economic data: A case study of Kenya (http://hdl.handle.net/10568/76503)
  • Examining environmental drivers of spatial variability in aflatoxin accumulation in Kenyan maize: Potential utility in risk prediction models

Finding the way forward to mitigation

  • Farmer perception of moulds and mycotoxins within the Kenya dairy value chain: A gendered analysis (http://hdl.handle.net/10568/76495)
  • A review of agricultural aflatoxin management strategies and emerging innovations in sub-Saharan Africa
  • Potential of lactic acid fermentation in reducing aflatoxin B1 in Tanzania maize-based gruel

Testing milk in Kenya's informal market

Testing the quality of raw milk in Kenya’s informal market. A new study has identified options that could help improve milk quality in Zambia’s Western Province (photo credit: ILRI/Dave Elsworth).

Solar pasteurisation and quality-based pricing of milk are among interventions whose feasibility should be explored towards improving the safety of milk produced by smallholders in Western Province of Zambia, a new study says.

The study published in the International Journal of Environmental Research and Public Health (July 2016) was carried out to assess the microbiological quality of fresh cow’s milk along smallholder dairy value chains in Western Province of Zambia. The focus was on milk sold through dairy co-operatives near Mongu, the main town in the province.

Milk samples were collected at the farm level from 86 cows from nine herds and from the container of pooled milk from the herd. Samples were also collected upon arrival at the two dairy co-operatives (Limulunga and Mongu) to which the pooled milk was delivered. Additional serial samples were collected at the co-operatives and refrigerated to simulate the recommended storage conditions after purchase or at the co-operatives.

Microbiological analysis of the milk samples assessed the counts of total bacteria and coliforms and tested for the presence of Staphylococcus aureus, Escherichia coli, Bacillus species and Streptococcus species.

The milk at the farm level initially had low levels of bacteria but the microbial counts increased along the value chain as the milk was transported to the co-operative. This is in part due to the absence of a cold chain between milking and the point of sale.

Although coliform counts were low, a high proportion of samples were contaminated with S. aureus and E. coli, suggesting poor handling and faecal contamination, respectively. However, the most critical observation with regard to milk safety was the lack of pasteurisation or boiling, which would eliminate almost all microbial pathogens present.

The study therefore proposes that more work should be done to look into the feasibility of various interventions that could improve the quality of milk produced and sold in the region.

“Sustainable methods of milk pasteurisation should be investigated, as a microbial-kill step is needed to mitigate upstream contamination,” the authors observe.

Solar pasteurisation has been suggested as a possible option to be explored, in light of unreliable electricity supply, low levels of technical support and low volumes of milk handled at the dairy co-operatives.

“Paying producers more for safer, higher quality milk would create an incentive for producer investment in milk quality,” they add. Currently, all farmers receive the same price for their milk, regardless of the quality.

Selling milk to large dairies is not feasible at the moment because the quantities of milk produced are low and inconsistent. Also, most consumers prefer to buy milk from the informal sector.

Therefore, raising awareness of the need to boil milk before consumption is another important intervention that would improve milk safety at the consumer stage of the value chain by eliminating the pathogen risk. In addition, it may increase consumers’ willingness to pay for pasteurised milk.

Reference
Theodore J.D. Knight-Jones and others. Microbial contamination and hygiene of fresh cow’s milk produced by smallholders in western Zambia (International Journal of Environmental Research and Public Health, 21 July 2016).

Next Page »