Tag Archives: University of Nottingham

New project to reduce chicken disease in Ethiopia

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Chicken on LUO RU BIN's farm

A new study of genetic resistance to disease in Ethiopia’s indigenous chicken breeds is scheduled to start later this year. In collaboration with the Ethiopian Institute for Agricultural Research, the University of Liverpool, Roslin Institute, the Univerisity of Edinburgh and the University of Nottingham, researchers from the International Livestock Research Institute (ILRI) will seek to identify ‘the causes of infectious diseases that have a major impact on poultry production in Ethiopia.’

Scheduled to start in September 2010, the study will take place in the district of Jarso, in eastern Ethiopia, and in Horro, in the west of the country. The results of this research will be linked to an ongoing poultry breeding program to improve resistance to ‘priority infectious diseases’ and thereby enhance the productivity of the country’s poultry sector.

Poultry play important economic, nutritional and socio-cultural roles in the livelihoods of poor rural households in Ethiopia and many other developing countries, where birds are widely integrated into smallholder production systems and help households cope with hunger and poverty.

Buying and rearing poultry is often a first step out of poverty. Women tend to own and manage chickens, usually native chicken varieties, which provide them with their only independent source of cash income.

Although breeding programs for local chickens have shown that rapid improvement in productivity is possible, researchers have yet to identify and select the optimal breeds for improving, by, for example, providing resistance to common infectious diseases.

Tadelle Dessie, a team leader of ILRI’s biotechnology theme in Ethiopia, and one of the leaders of the chicken project, says ‘enhanced genetic resistance through selective breeding is still an under-exploited low-cost opportunity for disease control in low-input poultry production systems’. He says the study will investigate genetic variability in the resistance of local chicken ecotypes to major infectious diseases hurting village poultry production in Ethiopia. Results of the research will inform strategies for improving both disease resistance and productivity.

Indigenous chicken varieties are well adapted to local environments, but local birds tend to grow slowly and produce fewer and smaller eggs than commercial varieties. Infectious diseases, however, can wipe out flocks of exotic, higher-producing, poultry.

Knowledge from this study should enable Ethiopian policymakers and animal health professionals to design more precise disease-control plans. The study itself should help improve Ethiopia’s scientific capacity in this field by training local scientists and enhancing laboratory facilities for poultry testing.

Staff are now being recruited for the project, which will be launched in September.

A frozen zoo in Nottingham ‘bio-banks’ wildlife threatened with extinction

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HanotteOlivier_08APM

We thought it appropriate in this United Nations ‘International Year of Biodiversity’ to highlight not only work by the International Livestock Research Institute (ILRI) and its partners (see ‘Livestock Diversity Needs Genebanks Too’, an opinion piece by ILRI Director General Carlos Seré published on the SciDevNet website on 21 May 2010) to conserve breeds and genes of native livestock that are rapidly disappearing, but also those of wild animals similarly threatened.

The Frozen Ark is such an initiative. It is led by Olivier Hanotte, an animal geneticist who spent many years at ILRI working to conserve livestock genetic resources indigenous in developing countries. These days Hanotte is running The Frozen Ark Consortium, a worldwide group of institutions coordinated from an office within a Frozen Ark Unit at the School of Biology at the University of Nottingham in the United Kingdom: Frozen.Ark@nottingham.ac.uk

The aim of the Frozen Ark is to preserve, for hundreds if not thousands of years, critical information about the species collected. As their website explains: ‘Despite the best efforts of conservationists, thousands of extinctions have occurred before the animals could be rescued. There has not been enough knowledge or money to stem the tide. This pattern is being repeated across all animal groups and emphasises the importance of collecting the DNA and cells of endangered animals before they go extinct. The loss of a species destroys the results of millions of years of evolution. If the cells and DNA are preserved, a very great deal of information about the species is saved. . . . For animals endangered but not yet extinct, the stored DNA and cells can also provide renewable resources of variation for revitalising captive breeding populations when the loss of variation through inbreeding threatens their survival.’

What has caught the public’s imagination is the possibility—a possibility ever more credible in light of ongoing, transformative, breakthroughs in molecular biology, particularly genetics and genomics, as well as drastic falls in the cost of sequencing genomes—that in future scientists will be able to reconstruct extinct animals from such preserved material.

‘While the reconstruction of extinct species from frozen material is not yet practicable, the possibility is not remote,’ says Hanotte. ‘If we fail to preserve the DNA and cells, the information and the possibilities will be lost forever. If DNA is stored in liquid nitrogen at -196 degrees Centigrade, it should survive intact for many hundreds, and possibly thousands, of years.’

The International Union of the Conservation of Nature (IUCN) Red List distinguishes more than 16,000 animal species that are under threat. The Fozen Ark aims eventually to collect the DNA of all these species, and the viable cells (somatic cells, eggs, embryos and sperm) of as many as possible, over the next 50 years. But Hanotte is quick to point out that the Frozen Ark Project is not a substitute for conserving the world’s diverse wildlife species, but is rather ‘a practical and timely backup of their genetic material.’

For more information, visit the Frozen Ark Website.

And watch the online version of this week’s broadcast (30 Mar 2010) of the American television program ’60 Minutes’, which explores the possibility of Resurrecting the Extinct from frozen samples.

Award-winning ILRI geneticist takes up prestigious UK appointment

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After 13 years with ILRI, geneticist Oliver Hanotte is taking up a new appointment at the University of Nottingham.
ILRI geneticist Olivier Hanotte starts his new position as professor of population genetics and conservation at the University of Nottingham, UK on 1st January. He will also be the director of a charity based at the university called Frozen Ark. The charity is concerned with the ex situ conservation of endangered animals, including wildlife as well as livestock.

Hanotte joined ILRI in 1995 when the Nairobi-based International Laboratory for Research on Animal Diseases (ILRAD) merged with the Addis Ababa-based International Livestock Centre for Africa (ILCA). Since then ILRI has shifted from a predominantly African focus to a global focus, with ILRI offices not only in East, West and Southern Africa but also in South Asia and South East Asia, providing new opportunities for Hanotte’s research focus.

Research highlights
In his 13 years at ILRI, animal geneticist Olivier Hanotte has worked to unravel the diversity of developing-world livestock using the latest molecular technologies of DNA sequencing and genotyping.

ILRI deputy director general – research, John McDermott, says ‘In 1995, when Hanotte began his work at ILRI, we knew that the world’s livestock diversity was shrinking fast, but no one knew exactly what was being lost and where we should target conservation efforts. Africa and Asia’s genetic diversity was largely unknown and unmapped.

‘We now have a much better picture of the livestock diversity hotspots in Africa and Asia and where the world needs to focus its conservation and genetic improvement efforts. This is due in large part to Hanotte’s scientific leadership, commitment to scientific excellence, innovative partnerships and capacity building activities across two continents’ says McDermott.

In 2003, Hanotte became leader of ILRI’s project on Improving Animal Genetic Resources Characterization. He has supervised project members working in Nairobi, Addis Ababa and, since 2005, in Beijing at a joint laboratory established with the Chinese Academy of Agricultural Science on livestock and forage genetic resources. He has established long term collaborations with several research institutes such as Trinity College at the University of Dublin (Ireland), Rural Development Agency, RDA (South Korea) and the joint FAO-IAEA division in Seibersdorf and Vienna (Austria).

Seminal work by Hanotte and his team has disclosed the origin and distribution of genetic diversity of livestock species including cattle, sheep, goat, yak and chicken in Africa and Asia. These findings are now providing a rationale for targeted conservation and utilization programs for developing-country livestock breeds at risk of extinction. This work also gives us a glimpse into the distant past of the peoples and civilizations of Africa and Asia.

Hanotte’s research has been published in leading scientific journals, including Science, PNAS, Animal Genetics and Molecular Ecology. He has produced over 80 scientific publications and received several international awards, including the CGIAR Science Award in 2003 for Outstanding Scientific Article. He has also supervised and co-supervised research projects of over 50 students and scientists.

Hanotte and colleagues at ILRI continue to break new ground. Current work includes research to better understand and characterize the adaptive traits of indigenous livestock to their local production environments, specifically the genetic and adaptive mechanisms for resistance and tolerance to infection and disease. Research includes tolerance of trypanosome infections in ruminants, resistance to gastro-intestinal worms in sheep and resistance to avian viral infection in poultry. Their work supports the new field of ‘livestock landscape genomics’, which has the long-term and ambitious aim of exploiting advances in the genomics and information revolutions to reliably match breeds to environments and sustainably increase livestock productivity.

Recognized as a leading expert in livestock diversity, Hanotte was invited to write the opening chapter, on the Origin and History of Livestock Diversity, for a major FAO-led study, ‘The State of the World’s Animal Genetic Resources for Food and Agriculture’, released at a Swiss conference in September 2007. He serves on the editorial boards of two major livestock journals (Animal Genetics and the Journal of Animal Breeding and Genetics), and as a regular scientific referee for major scientific journals. His group collaborate with ILRI’s sister CGIAR institution ICARDA in the characterization of the genetic resources of small ruminants.

Hanotte says, ‘I’m very much looking forward to my new position, but leaving ILRI is bittersweet. I have spent the greater part of professional life here in Kenya. I will greatly miss my colleagues and the rich culture of Africa. But I also know that there will be opportunities for collaborations in the future’

‘When you are studying or working in the North, you can get distorted information about Africa and Asia. And you can become removed from the realities. One of the big advantages of working with ILRI is that you’re based in a developing country. That means you’re never too far away from the people that you’re working for. ILRI is an open door to African and Asian farming societies and cultures’

Contacts:

Olivier Hanotte
Professor of Population and Conservation Genetics /Director of theFrozen Ark
School of Biology
University of Nottingham
Nottingham
NG7 2RD, United Kingdom
email: olivier.hanotte@nottingham.ac.uk

John McDermott
Deputy Director General – Research
International Livestock Research Institute (ILRI)
Nairobi, Kenya
Email: j.mcdermott@cgiar.org

Further information:
Olivier Hanotte’s recent published research on BioInfoBank: http://lib.bioinfo.pl/auth:Hanotte,O
Overview of ILRI research on Improving Animal Genetic Resources Characterization
The State of the World’s Animal Genetic Resources for Food and Agriculture
Frozen Ark website http://www.frozenark.org/

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