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ICARDA's Research
Portfolio
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| ICARDA's Research Portfolio> Project2.1>Project2.2>Project2.3>Project2.4>Project2.5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ICARDA's Research Portfolio |
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Theme 2.
Production Systems Management
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Project 2.5. Improvement of Small-Ruminant Production in
Dry Areas
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ICARDA is helping small-scale farmers in CWANA to cope with the challenges of their traditional production systems. These include a significant decline in rangeland productivity in Central Asia, which has been exacerbated by droughts, and reduced market opportunities for traditional products. At the same time, opportunities are offered by the development of potential new markets for non-traditional products. To improve productivity, research has focused upon both plausible marketing options and the use of alternative fodder sources to cope with feed shortages in the rangelands. In 2002, studies in Uzbekistan and Turkmenistan demonstrated the potential for milk production in sheep breeds traditionally used for wool and pelts. Farmers found that cheese production was a valuable source of additional income. In addition, to address dry-season feed constraints in Turkmenistan, highly saline irrigation drainage water, otherwise dumped in the desert, was used innovatively to irrigate cultivated salt-tolerant plants. Even in a drought year, resulting forage yields were up to 60 times greater than those from natural rangelands. |
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Diversifying into sheep milk production in the steppes of Uzbekistan and Turkmenistan The dissolution of the large
Soviet market, after the breakdown of the Soviet Union, plunged Central
Asian sheep production into crisis. Previously, production was centered
on wool and pelts, meat was a by-product and milk production was not
even considered an option. Now there is little local and regional demand
for wool and pelts, prices are low, and the scale of production has
shifted; huge landholdings and flocks have been replaced by thousands
of small privatized units, each having a handful of animals. Returns
per head and per flock are low. Thus, there is a need for increased
diversification and the reorientation of production systems, to match
current production to demand and to the scale of operations. |
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| Table 22. Milk production of Karakul Mary ewes1 (20 March-29 May 2001). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Both age and genotype affected milk production. Total milk production, and its fat and solid contents, decreased with age: 3- to 4-year-old ewes produced the largest yield (65 kg) while older animals produced 20-30% less. The gray and the black Karakul sheep demonstrate many genetic differences. Gray lambs are usually heavier than black, and their pelage (fur) is usually over-developed; but, they are less healthy. Black ewes trailed gray ewes in total milk yield (50.65 vs. 57.67 kg). However, the milk of the black ewes was richer in fat and total solids. Gray ewes were depleted more rapidly during lactation than black ewes |
![]() Milking Karakul ewes, not practicd before in Central Asia, is proving to be an important source of additional income for farmers in Uzbekistan. |
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(whose milk contained high
levels of fat and solids until the end of lactation). |
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| A second study considered lactating Karakul ewes in Turkmenistan. During 2000 and 2001, the productivity of ewes raising their lambs was assessed in collaboration with the Turkmen Agricultural University. During four months of lactation, ewes raising a single lamb produced 62.4 kg of milk; ewes raising twins produced 1.9 times that amount (120 kg). Maximum production (41-44% of total yield) was observed in the first month of lactation. By the end of the second month, almost 70% of the milk had been produced. Results obtained by farmers, though from another breed (Sarajin), suggest that a progressive milking | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() Central Asian farmers and scientists visiting the Sheep Unit at ICARDA's headquarters in Aleppo, Syria. |
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strategy—as early as 60
days after lambing—in addition to some level of feeding with hay and
concentrates (250-300 g per head), could stimulate milk production to
the extent that some milk could be recovered. Under these conditions,
a total of over 20 kg of milk per ewe would be possible. This could
provide income in addition to the production of lambs. New opportunities to enhance the feed base: using waste drainage water in the deserts of Turkmenistan The breakdown of the former Soviet Union has had a major impact on both the feed production chain in Central Asia and the provision of fodder during critical periods of feed shortage. Previously large landholdings were broken up, and now the vast majority of producers farm on a small scale, with small numbers of animals, while others are landless. They have neither the resources nor sufficiently large flocks to justify seasonal grazing, nor can they produce fodder for the months of scarcity in drought and winter periods. This results in low productivity levels and serious degradation around villages. The crisis is severe in countries with harsh winters, where animals have to remain housed for several months due to extreme cold and snow. But the situation is also critical in countries (such as Turkmenistan and Uzbekistan) with less severe winters and extended periods of drought and hot weather. |
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| Ephemeral vegetation on rangelands is heavily grazed by sheep-the main livestock species. It starts growing in spring and early summer, but then declines in abundance from July until the rains start at the end of the year. Unfortunately, this decline occurs during two important periods in sheep production: mating, and the onset of the critical last 50 days of pregnancy. Rangeland feed availability can also decrease dramatically in drought years, as scientists from ICARDA and Turkmenistan's Research Institute of Desert Flora and Fauna found when measuring the biomass on two types of range on Yzgant Farm in the Central Karakoum desert (Fig. 12). Less than 25 kg/ha of standing biomass occurred in the fall of 2001, as rainfall that year (the end of a three-year drought) was only 80-90 mm. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() Fig. 12. Consumable biomass (kg/ha of dry matter), in two types of ranges (Salsola-Calligonum and Calligonum-Astragalus), over periods of drought (2000-2001) and of average rainfall (2002), on Yzgant Farm, Central Karakoum, Turkmenistan. |
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To address production constraints such as these, ICARDA, in collaboration
with Central Asian NARS, and with funding from the International Fund
for Agricultural Development, launched the Integrated Feed and Livestock
Production Project in 1999. Through this, a way to produce low-cost fodder
in the deserts of Turkmenistan was identified. Large irrigation systems
in the country are used for the production of key crops, involving three
major rivers being directed through the Karakoum Channel. Each year, an
estimated 6-7 km3 of drainage water, passing through about 35,140 km of
drainage channels, is dumped into the deserts after being used to irrigate
crops. This water could be used to produce forage biomass to overcome
feed shortages after the summer, particularly in degraded areas with high
levels of salinity. An experiment was begun in 2001, on the farm where natural range vegetation had been measured (Fig. 12). Drainage water gathered in a collector (with a capacity of about 0.5-1.0 m3) installed in a drainage water channel, was used to irrigate 2.5 ha of degraded land with salinity problems. The land was sown with salt-tolerant plants (halophytes), both annual and perennial. Salinity levels of this water were higher (3-7 g/l, depending on the season) than those of the water in the major Karakoum Channel (0.6-0.7 g/l). On these saline soils, halophytes were sown between January and February and received two irrigations, each of 1,000 m3. The first was applied at the end of April, because the spring was unusually dry; the second was applied in August. By September, plant growth satisfied expectations, with annual Atriplex species (Atriplex heterosperma, A. dimorphostegia, and A. ornata) and Suaeda altissima attaining the greatest heights: 104 and 89 cm, respectively (Table 23). Perennial Atriplex species (A. canescens and A. turcomanica) exhibited the slowest growth. |
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| Table 23. Growth characteristics of salt-tolerant plant species irrigated with saline drainage water on Yzgant Farm, Central Karakoum, Turkmenistan (spring to fall, 2001). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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By September, the most productive species (Climacoptera lanata and annual
Atriplex) were able to produce 7.8 and 8.8 tonnes of dry matter (DM)/ha,
respectively. When compared with the small amount of biomass that is
naturally available on the range at this time (less than 0.15 t/ha,
Fig. 12), it is not surprising that local farmers are very interested
in the results. |
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Spring rainfall in 2002 was above average, so early irrigation was not
necessary. Thus, drainage water was applied only once, in late June. Germination
occurred much later on the newly sown land (early April) than it did in
the 'reseeding' plot (mid-March). By mid-April, seedlings from the February
sowing were only 3-5 cm high, whereas those in the reseeding plots were
15-20 cm high (A. heterosperma) and 8-12 cm high (S. altissima). However,
despite this vigorous growth, the biomass yields in reseeding plots did
not exceed 3.5-4.0 t DM/ha. Yields of C. lanata and annual Atriplex species were as high as 13 and 12 t DM/ha, respectively: higher than in the |
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![]() Climacoptera lanata, a halophyte, is an excellent option for biomass production in periods of high fodder scarcity using drainage water in Turkmenistan |
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year of 2001. Yields of S. altissima were lower, and, as in 2001, the
lowest yields were observed for perennial Atriplex. Interestingly, after the first irrigation in 2001, the emergence of local perennial salt-tolerant species such as Karelinia caspica and Aeluropus litoralis was observed. By mid-July in the second year (2002), the average height of these species was 128.8 and 48.5 cm, respectively. By September 2002, the yields of the same species had reached 7.45 and 2.14 t DM/ha. The natural rangeland's biomass production (0.15-3.90 t/ha in exceptional years and 0.10-0.12 t/ha in average years) gives a low carrying capacity of about 6-7 ha per sheep per year. This is even lower during drought years. It is clear that the production of halophytes using drainage water has the potential to enhance the feed base in this production context, particularly in degraded soils with elevated salinity, and offers an alternative option for farmers in Turkmenistan. Trials with animals are now being used to assess the effectiveness of these species in livestock feeding; economic evaluations of these technologies will be reported in the future. |
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