- Cary Fowler on the need to breed.
- MRIs of fruits and vegetables. Well, why not?
- The genetic consequences of bovine inter-specific sex explained. SFW.
- How Mrs Joséphine Enoce Bouanga makes milk from squash seeds in Pointe-Noire.
- Gates Foundation orange sweet potato project in Mozambique. Still waiting to hear what they’re going to do with all those useless landraces they’ll be replacing.
- Nourishing the Future does Lost Crops of Africa 101. Beginners, start there, but don’t expect to be taken anywhere interesting.
- Blog carnival Scientia Pro Publica #35 is up, but what’s with the verse alphabetical order? Harummph.
The horse in Mongolian culture
They may be trying to develop and diversify their agriculture now (well, since the 1950s), but Mongolians are traditionally very much a nomadic herding culture, with the horse at its centre. ((Though that doesn’t stop them growing small patches of wheat around their temporary encampments, out west in the Altai Mountains.)) One expression of that is how early kids learn to ride.
Most young Mongolians — boys in particular — learn to ride from a very young age. They will then help their fathers with the herding of goats, sheep and horses. Some children have a chance to ride at festivals called Naadam — the biggest of which is held on 11th-13th July in Ulaanbaatar — though there are naadams held throughout the year all over the countryside. Young jockeys between the age of 5 and 12 (girls and boys) race horses over distances ranging from 15km to 30km. There are 6 categories for the races depending on the horses’ age, including a category for 1 year old horses (daag) and one for stallions (azarag).
Alas, this museum display is as close as I got to seeing the famous Mongolian Wild Horse or Przewalski’s Horse (Equus ferus przewalskii), locally known as takhi.
It’s possibly the “closest living wild relative of the domesticated horse, Equus caballus.” Certainly it is genetically very close to the local domesticated breed based on molecular markers, though that could be because of interbreeding. Last seen in the wild in 1969, its restoration in China and Mongolia from captive stock, for example to the Hustain Nuruu National Conservation Park, is one of the great conservation success stories.
Livestock reverse desertification
There’s something delicious about received wisdom being overturned. For example, you’ll hear it said, categorically, that livestock turn fragile landscapes into desert; they eat the plants binding the soil, and their hooves cut up the surface and promote erosion. But it ain’t necessarily so.
Operation Hope, a Zimbabwean NGO and winners of $100,000 Grand Prize in the Buckminster Fuller Challenge, has
[T]ransformed 6,500 acres of of parched and degraded grasslands in Zimbabwe into lush pastures replete with ponds and flowing streams – even during periods of drought.
The quote is from a write-up in Seed magazine, which gives lots of details of the story. In essence, the key to livestock and grasslands is time, not numbers. If animals are on the land too long, their hooves do indeed powder the soil and they do overgraze. But if they are free to move on, or are moved by herders, moderate trampling allows rain to percolate into the soil, rather than run off and cause erosion. It also improves contact between seeds and soil, promoting germination. And dung and urine return plant matter to the soil to increase fertility and sequester more carbon, without becoming pollutants.
Operation Hope grazes animals in one spot for a maximum of three days, and they do not return for at least nine months, mimicking the natural movements of large herbivores on the savannah. At night they are protected from predators in portable kraals, which are also mobile to prevent a build-up of dung and urine. The effects are impressive. (“Animal-treated” field on the right, conventionally managed field on the left. Image courtesy Buckminster Fuller Institute”)
What’s interesting, and this is explored in much more detail in the Seed article, is that this kind of ecosystem thinking, which requires human knowledge and ingenuity to tackle complex problems, could have applications well beyond range management. Allan Savory, the scientist behind Operation Hope and the Africa Centre for Holistic Management, is hard on the Green Revolution.
“We posit the necessity of a new ‘Brown Revolution’, based on the regeneration of covered, organically rich, biologically thriving soil, and brought to fruition via millions of human beings returning to the land and the production of food.”
Of course, that’s hard work. But it is also surely much more interesting and fulfilling.
Nibbles: FAOSTAT, Drought, Seeds, Helianthus, Coffee trade, CePaCT, Figs, Old rice and new pigeonpea, Navajo tea, Cattle diversity, Diabetes, Art, Aurochs, Cocks
- FAO sets data free. About time.
- Presentation on drought risk and preparedness around the world. Nice maps.
- A Facebook for seeds?
- The diversity of Jerusalem artichoke. In France.
- Coffee certification 101.
- Nice plug for SPC’s Centre for Pacific Crops and Trees.
- The fig of choice in San Francisco.
- Back to traditional rice varieties in India. But forward to new pigeonpea varieties in Malawi. Go figure.
- Navajo tea. Would love to try it.
- “The mixed (east-west) affiliation of Mongolian cattle parallels the mixed affiliation of Mongolians themselves.”
- Lancet article mentions Lois Englberger and her Go Local work in the Pacific in context of diabetes epidemic in Asia-Pacific.
- Edible art.
- More on bringing back the aurochs. Does anyone really want one, though?
- Great variety of rare and exotic poultry breeds. Temptation to pun smuttily averted, mostly.
Livestock genomes not enough
You may remember we nibbled a Science paper entitled Time to Tap Africa’s Livestock Genomes which got a lot of traction in the press a few weeks ago. It has also generated an interesting discussion at the DAD-Net forum, set off by the following contribution by Dr Ilse Köhler-Rollefson of the League for Pastoral Peoples and Endogenous Livestock Development, which she has kindly allowed us to reproduce here.
Congratulations on this article – it is certainly great to have these issues raised in a high profile scientific journal! However, after reading the summary about it presented in the BBC interview, I am a bit worried about the notion of the need to “tap Africa’s animal genetic resources” before they have become extinct. For one, they are already being “tapped” by African pastoralists — and have been tapped for hundreds or thousands of years — to enable survival in inhospitable areas. One crucial aspect of pastoralist livestock is the ability to walk for ever and thereby access and then ingest and metabolize vegetation that would otherwise be of no use to humans. Their contribution to food security is thus enormous. Unfortunately, to my knowledge, no scientific research has ever focused on “walkability.”
But what we urgently need to realise is that many of the wonderful characteristics of African and other pastoralist livestock are not a question of genetics, but of learned behaviour, as Saverio Kraetli has shown in his seminal studies of WoDaaBe cattle breeders in Niger. It is therefore a fallacy to believe that we can “fix” certain weaknesses of Western or high-performance breeds by introducing the genes of African livestock into them.
This does not make it less urgent to conserve pastoralist livestock, as food security for people in marginal areas remains a major concern. In their Biocultural Community Protocol, the Samburu have testified how replacement of the Red Massai sheep with Dorper has undermined their drought resistance.
African livestock breeds and their unique traits can only be conserved in living systems, using agroecosystem approaches as spelled out in one of the Strategic Priorities for Action of the Global Plan of Action for Animal Genetic Resources. Consequently we need enabling policies for livestock keepers, much more than additional research at the genome level — which would be unable to address complex traits such as walkability.