Tag Archives: EMBRAPA

Better grass for better smallholder dairying in East Africa

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The tuft of grass minor, by Albrecht Durer (via Wikipaintings).

The Tuft of Grass Minor, watercolour by Albrecht Dürer (1471–1521) (image via Wikipaintings).

An impact case study on Getting superior Napier grass to dairy farmers in East Africa was published on 1 Mar 2013 by the European Initiative for Agricultural Research for Development (EIARD), the International Livestock Research Institute (ILRI) and the Kenya Agricultural Research institute (KARI). Excerpts follow.

To meet demand for high-yielding, disease resistant fodder from smallholder dairy farmers in East Africa, scientists from the Kenya Agricultural Research Institute (KARI) and the International Livestock Research Institute (ILRI) worked together to select and distribute smut-resistant varieties of Napier grass.

‘Napier grass has become the most important fodder crop in Kenya, but 20 years ago head smut disease began to have a devastating impact, turning valuable fodder into thin, shrivelled stems. With the cost of disease control using systemic fungicide beyond the means of most smallholder dairy farmers, KARI began work to select smut-resistant varieties.

‘With access to Napier grass germplasm from ILRI’s genebank, KARI developed two resistant varieties — Kakamega I and Kakamega II. Favourable laboratory results were confirmed in farmer’s fields and work began to multiply planting material. Within a year, cuttings were distributed to over 10,000 smallholder farmers. The new varieties are not quite as productive as the best of Kenya’s local Napier grass varieties, but have still proven popular in smut-affected areas. By 2007, 13 per cent of farmers were using Kakamega I for zero grazing systems in smut prone areas.

‘The chance of head smut resistance breaking down in the new varieties is high, so KARI is screening more materials from ILRI, which is continuing to build its Napier grass collection to have germplasm available to screen for new resistant varieties. In 2012, ILRI provided the Brazilian Agricultural Research Corporation, Embrapa, with Kakamega I and II to enable researchers to use them to develop higher yielding and more nutritious resistant varieties. . . .

Background
‘Dairy farming, Kenya’s leading livestock sector activity, is vital for the livelihoods and food security of millions of Kenyans. More than 80 per cent of milk produced and sold in Kenya comes from smallholder farmers, typically raising just one or two dairy cows on small plots of land. Women perform half of all dairy related activities in Kenya, which improves household welfare, primarily through increased household income and milk consumption.

‘With a growing population and shrinking areas for pasture, cattle are increasingly being fed on crop residues, cultivated fodder and some concentrates. Ninety per cent of farmers now produce on-farm feeds. Being able to provide enough good quality fodder is by far the most important factor in achieving high milk quality and yield, with a well fed animal producing two or three times more milk than an averagely fed one.

‘The high yielding fodder, Napier grass — Pennisetum purpureum — has become by far the most important due to its wide adaptation to different regions, high yield and ease of propagation and management. Napier grass constitutes between 40–80 per cent of the forage for more than 0.6 million smallholder dairy farms. With fodder in high demand, selling Napier grass as a business has good potential for improving smallholder livelihoods. According to a recent survey, up to 58 per cent of Kenyan smallholder farmers already sell fodder, including crop residues, straw or grass.

‘However, in the early 1990s, head smut disease, caused by the fungus Ustilago kamerunensis, began to have a devastating impact on Napier grass. Spread rapidly by wind and infected plant material, smut turned valuable Napier grass into thin, shrivelled stems and reduced yields by 25–46 per cent. For smallholder farmers, the threat was very serious.

‘Disease control using systemic fungicide in fodder crops is very expensive and therefore beyond the means of most smallholders. Using tolerant high yielding varieties is a cost effective solution and avoids the additional costs of moving to a different feeding system. ILRI maintains an international collection of forage germplasm under the auspices of the International Treaty on Plant Genetic Resources for Food and Agriculture. The state of the art genebank, based in Ethiopia, holds over 19,000 forage accessions, including 60 genotypes of Napier grass. . . .’

Funding
ILRI received direct funding from the European Union, Germany, Switzerland and the United Kingdom to support their forage diversity work and forage genebank in addition to funding from CGIAR.

For further information
Getting superior Napier grass to dairy farmers in East Africa, impacts case study by EIARD, ILRI and KARI, Mar 2013
Visit ILRI’s forage diversity website
Visit the project site: Napier Grass Stunt and Smut Project
Saving animal feed plants to preserve livelihoods, 2007 (ILRI film, run-time: 11 minutes)
Putting ILRI’s genebank to work, 2007 (ILRI film: run-time: 14 minutes)
Contact: Alexandra Jorge, ILRI Genebank Manager: a.jorge [at] cgiar.org

The road back to Rio: ‘LivestockPLUS Learning Event’ shows how better feed reduces poverty AND livestock ‘hoofprints’

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NP Llanos51_lo

Cattle graze on Colombia's eastern plains, or Llanos (photo on Flickr by CIAT/Neil Palmer).

 

Several hundred people in Rio de Janeiro today will be discussing and debating a topic not often included in high-profile meetings. The topic is how we can use improved livestock feed to reduce both poverty and climate change.

The discussions today will take place at one of 13 ‘learning events’ that are part of an Agriculture and Rural Development Day at the Rio+20 United Nations Conference on Sustainable Development. Staff from CGIAR  Centres are helping to organize and are participating in events throughout this day.

Given that the key messages of this particular learning event run counter to much current thinking about livestock, the participants will share and discuss scientific evidence that demonstrates the benefits of improved feeding practices, particularly their potential for contributing significantly to climate change mitigation while improving livestock production.

Messages
On the table today are both fodders, coarse foods composed of entire plants or the leaves and stalks of cereal crops, and bulky grass or hay forages. The learning event, titled ‘LivestockPlus—How can sustainable intensification of livestock production through improved feeding practices help realize both livelihood as well as environmental benefits?’, will deliver the following three fundamental messages.

New feeding practices can increase livestock production while decreasing its ecological ‘hoofprint’

New livestock feeding practices, like the use of improved dual-purpose crops and high-quality forages, offer significant potential for sustainable intensification of agricultural production to enhance livelihoods while also reducing livestock’s ecological ‘hoofprint’.

Improved forages, like forests, will capture carbon

Improved tropical forages offer the further advantage of sequestering large amounts of carbon—on a scale similar to that of forests—with the possibility of reducing emissions of nitrous oxide and methane per unit of livestock product. There is evidence that the potential of sown forages to sequester carbon (assuming good pasture and livestock management) is second only to that of forests and that sown forages could realize 60–80% of agriculture’s total potential to mitigate climate change.

Better feeding practices will allow mixed crop-livestock farmers to produce more food more sustainably

If widely applied by the vast army of ‘mixed’ smallholder farmers, who raise livestock as well as grow crops, and who are the mainstay of global food security, improved livestock feeding practices could deliver huge increases in food production at reduced environmental cost against a background of rising livestock production and consumption in the developing world.

Evidence
The result of numerous global initiatives and extensive testing, this work offers practical examples of how improved feeds can raise the production and incomes of smallholder farmers. Superior forage grasses widely adopted in Latin America, for example, already generate up to USD4 billion in Brazil alone. And improved tropical forages have also been adopted widely in Southeast Asia since the start of their promotion in 1995. A recent review indicates that continued adoption of improved feeds, including sown forages, could significantly reduce greenhouse gases on a global scale, while enhancing the livelihoods of the one billion people dependent on livestock-cropping systems.

What remains to be done
To scale up these improved feed resources so that they contribute to a transformed food system, we need more precsie understanding of the impacts of livestock on climate change, with the impacts differentiated by specific livestock-cropping systems, as well as of the potential for improved feeding practices to mitigate climate change. To make livestock and crop production in the tropics more climate friendly through improved feeding practices, smallholders must be given stronger incentives to market their livestock products and to sequester carbon through improved land management. Smallholders might be encouraged to adopt sown (and carbon-storing) forages, for example, through schemes instituted to pay them for the environmental services they provide.

What could be achieved
With donor support for research to obtain conclusive data and to provide policymakers with support for their decision-making, a functional system for implementing the LivestockPlus concept and associated strategies could be available within the next 5–6 years.

The program for this learning event
The program for this learning event includes a keynote presentation on the role of forages and livestock production in mitigating greenhouse gas emissions by CIAT soil scientist and agroecologist Aracely Castro; this keynote will be followed by three short case-study introductions on the following topics.

Carbon sequestration in livestock production for climate change mitigation: Implications for policy development in Brazil, presented by Embrapa beef cattle researcher Davi José Bungenstab.

Livestock production and climate change in sub-Saharan Africa and Asia: Technical innovation for environmental and livelihood benefits, presented by Carlos Seré, former director general of ILRI and now chief strategist for IFAD (note: Seré is speaking on behalf of ILRI animal nutritionist Michael Blümmel).

Climate-smart silvopastoral systems for a green livestock economy, presented by CATIE director Muhammad Ibrahim.

These case study presentations will be followed by parallel group discussions on each of the three cases to answer such questions as:
What are the main research findings that support the technological or policy innovation, including evidence of livelihood and environmental benefits?
What were key lessons learned from the research leading to this innovation?
What are the requirements for scaling it up?

The session will close with a moderated panel discussion in plenary with the keynote speaker and case study presenters.

Institutions involved
CATIE is a regional centre of excellence based in Costa Rica that works on solutions for the environment and development in rural communities in Latin America and the Caribbean.

CIAT, the International Center for Tropical Agriculture, based in Colombia, works to increase the eco-efficiency of agriculture to reduce hunger and poverty and to improve human health in the tropics.

EMBRAPA is the Brazilian Agricultural Research Corporation, which works for the sustainable development of Brazilian agribusiness.

ILRI, the International Livestock Research Institute, based in Africa, works to reduce hunger, poverty, ill health and environmental degradation through enhanced livestock systems for poor people in the developing world.

Presenters at the event
This learning event will be chaired by Elcio Guimarães, who is director of research for Latin America and the Caribbean at the International Center for Tropical Agriculture (CIAT). Discussions at the session will be summarized by Nathan Russell, a key organizer of this session who leads corporate communications work at CIAT. One of the three scheduled case study speakers, Michael Blümmel of ILRI, is unable to attend; his presentation will be made by Carlos Seré, former director general of ILRI and now chief strategist for the International Fund for Agricultural Development (IFAD).

Follow the event on the web
Today, 18 Jun 2012, proceedings of the Agriculture and Rural Development Day will be webcast live (the event takes place from 11.30–13.00 Rio time), and you can ask questions and interact with the organizers via Twitter and Facebook. You can also follow the presentations and discussions of this learning event on Twitter as @agricultureday and check updates via the Twitter-tags #RioPlus20 and #Rio4Ag and the Facebook page for ARDD. You can also follow CGIAR at Rio on this landing page on the CGIAR Consortium website.

Improving cattle genetics with in vitro embryo production technology

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Livestock scientists from ILRI and the Clinical Studies Department of the University of Nairobi (UON) recently succeeded in breeding Kenya’s first test-tube calf using a technique called in vitro embryo production (IVEP). IVEP makes it possible to rapidly multiply and breed genetically superior cattle within a short generation interval.
Why is this important?
For several reasons. First, livestock is the fastest growing sub-sector in the world, as increasing trends of 114% in demand for meat and 133% for milk attest. To improve on food security, it is essential to double livestock production in the developing world by 2020. IVEP is clearly one of the most efficient ways to accomplish this.

Second, let’s consider the problem of environmental impact. Doubling livestock production through traditional breeding techniques increases pressure on natural resources—water, land and biodiversity. So the need for enhanced efficiency without degrading natural resources is urgent. Again, IVEP, which requires only laboratory equipment in the production process, comes to the rescue.

Third, there is the biodiversity issue. Matching genotypes to environment is crucial. Scientists need to take several factors into consideration—among them adaptation, tolerance for disease, tolerance for new environments and alignment to market development. Although plenty of genetic diversity exists, thus far we’ve done little with it. Once more, IVEP could be the answer.

Fourth, IVEP has significant commercial potential because farmers can rent their best cows as donors and their lower-quality cows as surrogates.

Most importantly, we need to look closely at the constraints faced by small-scale livestock keepers.

  • Cattle genotypes and production environments, as often as not, do not match. Result:  low productivity.
  • Heifer replacement programs take a long time and are rarely done properly. Result: supply is low, prices are high.
  • Sex ratios are often disadvantageous. Result: too many males and high production costs.
  • The commercial relevance of many indigenous breeds is not optimised. Result: farmers incur unsupportable losses.
  • Programs for breed conservation and preservation are often improper. Result: some breeds are threatened by extinction and no gene pool for replacement exists.

IVEP does not—and should not—completely replace traditional reproductive technologies such as conventional embryo transfer (ET) and artificial insemination. Each of these techniques has its place, and each of them utilizes tissues, embryos and semen for improvement and reconstruction of cattle breeds. The difference is that while the traditional ET techniques involve more animals and are wholly done in the field, IVEP is undertaken in the lab and involves fewer surrogate animals in the field. IVEP eliminates the tedious steps of synchronizing donor cows.

Specifically, IVEP technology as a breeding tool has the distinct advantage of maximizing utilization of appropriate dam and sire genotypes by:

  • increasing efficiency of multiplication in breeding;
  • permitting  determination of sex of the offspring; and
  • permitting pre-testing of actual fertility status of the bull.

Thus, while natural mating or artificial insemination are necessarily slow and inefficient, producing only 10-15 offspring per life span of a cow …

…IVEP can produce up to 300 offspring per life span.

The SIFET Project: a successful IVEP program
The Sexed semen in-vitro fertilization and embryo transfer (SIFET) project was designed to exploit and promote the potential of applying IVEP reproductive technique to:

  • develop, multiply and disseminate female crossbreeds that appropriately match with production environment;
  • provide a system to preserve top bovine genotypes in cases of accidental culling in a recycle-like scheme (slaughterhouse collection); and
  • identify, multiply and conserve selected superior desirable breed traits.

The project involved collecting ovaries from slaughter houses or picking ovum from live cows. When the genetic material is brought to the lab, oocytes with high developmental competence are selected and morphological evaluation done. Once the ideal oocytes are identified, they are matured in vitro for 22-24 hours. The subsequent in vitro fertilization process is conducted for a period of 18-22 hours with a high sperm concentration. The fertilization itself requires removal of seminal plasma and extenders, separation of motile sperms from dead ones and induction of sperm capacitation. Once the embryos are formed, they are cultured in the lab for 7 days and then transferred to surrogates.

A conception rate of about 40% has been achieved, with calves born without abnormalities.

Conclusions

  1. IVEP technology is feasible in Kenya.
  2. Commercialization of the process should be facilitated as soon as supportive policies and proper legal/regulatory frameworks are in place

Challenges
Poor field heat detections leading to poor uterine synchrony and lower conceptions are concerns, as is the high genotype variability characteristic of animals brought to slaughterhouses.

Way forward and prospects
Looking ahead, the collaborating scientists anticipate bringing ovum pick-up (OPU) and cryopreservation into the picture as well as capacity building.

Clearly, such programs can help match breeds to appropriate production systems to ensure sound breeding programs. Where and when necessary, new breeds can be introduced within a relatively short period of time. Above all, embryos are far easier to transport across continents than live animals.

Through IVEP technology and well-planned crossbreeding programs such as SIFET that integrate the use of indigenous cows as donors and surrogates while using semen from appropriate (more productive and reasonably adapted) dairy breeds such as Jerseys, F1 heifers suited to the smallholder farmers’ conditions can be produced.

Niche markets for the technology and its F1 products should be further explored and exploited, notably with regard to the potential of forestalling the threat to key wildlife species.

Acknowledgements
Funding for the project was made available by Heifer Project International. UON provided the technical team and recipient animals. Administration and laboratory facilities were provided by ILRI. The cooperation of the abattoirs (the source of ovaries) and the animal owners are gratefully acknowledged. The capacity building program through a joint CNPq grant for the Embrapa-UON-ILRI partnership, as well as support from Dr Luiz Carmago and Dr Joao Viana of Embrapa, are highly appreciated.

The collaborating scientists are Mwai Okeyo, Henry Mutembei and Bridgit Syombua from ILRI; and  Erastus Mutiga, Victor Tsuma and Henry Mutembei from Clinical Studies, UON.

For more information, contact Dr Okeyo Mwai, Animal Geneticist/Breeder, Biotechnology Theme, ILRI, at o.mwai@cgiar.org.