Track 4-1-3: Breeding Range Grasses and Legumes for Biomass and Stress Tolerance

Description

The basal feed resources for ruminants available in most developing countries in the tropics are crop residues, pasture from infertile land, for example communal land, or agro-industrial by-products. These are low in protein and of low digestibility. A major problem facing livestock producers in tropical areas is proper nutrition for their animals during the dry season when pastures, cereal residues and maize stover are limiting in nutritional quality. The researchers in Myanmar have tried to improve the nutritive value of fibrous agricultural residues. Aung Aung et al. (2006) supplemented the sesame and chickpea husk to bulls fed on urea-treated rice straw. One way of improving the utilisation of such crop residues is by proper supplementation with leguminous forages (Poppi and McLennan 1995).

In most regions of Myanmar, the green forage is available during the rainfall and become shortage during dry season. Therefore, feedstuff for ruminant animals mainly has to depend upon the availability of agricultural by-products. Almost more than half of the livestock population of Myanmar is inhabited in dry zone and thus, to overcome the scarcity of the feedstuff during summer, the irrigation system was introduced in these areas for the development of agriculture.

A simple and effective way to increase livestock production is to grow improved pastures. Throughout Myanmar, extensive areas of idle land could grow excellent pasture. At present, most of the “pastures” consist of low rank, poor quality grasses and a limited range of edible shrubs. During prolonged dry periods, grazing animals subsist on dry mature roughage of poor quality (Myo Kywe and Tin Mg Aye, 2007). Grass species, which can rapidly grow after the rain also having drought tolerance, would be very useful in the production system. There is still little information on the use of forage in Myanmar. It is needed to select the grass species which have drought resistance in Myanmar and thus this experiment was conducted to evaluate a range of introduced tropical grasses in the central dry zone of Myanmar.

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Selection of Suitable Varieties of Grasses for Myanmar

The basal feed resources for ruminants available in most developing countries in the tropics are crop residues, pasture from infertile land, for example communal land, or agro-industrial by-products. These are low in protein and of low digestibility. A major problem facing livestock producers in tropical areas is proper nutrition for their animals during the dry season when pastures, cereal residues and maize stover are limiting in nutritional quality. The researchers in Myanmar have tried to improve the nutritive value of fibrous agricultural residues. Aung Aung et al. (2006) supplemented the sesame and chickpea husk to bulls fed on urea-treated rice straw. One way of improving the utilisation of such crop residues is by proper supplementation with leguminous forages (Poppi and McLennan 1995).

In most regions of Myanmar, the green forage is available during the rainfall and become shortage during dry season. Therefore, feedstuff for ruminant animals mainly has to depend upon the availability of agricultural by-products. Almost more than half of the livestock population of Myanmar is inhabited in dry zone and thus, to overcome the scarcity of the feedstuff during summer, the irrigation system was introduced in these areas for the development of agriculture.

A simple and effective way to increase livestock production is to grow improved pastures. Throughout Myanmar, extensive areas of idle land could grow excellent pasture. At present, most of the “pastures” consist of low rank, poor quality grasses and a limited range of edible shrubs. During prolonged dry periods, grazing animals subsist on dry mature roughage of poor quality (Myo Kywe and Tin Mg Aye, 2007). Grass species, which can rapidly grow after the rain also having drought tolerance, would be very useful in the production system. There is still little information on the use of forage in Myanmar. It is needed to select the grass species which have drought resistance in Myanmar and thus this experiment was conducted to evaluate a range of introduced tropical grasses in the central dry zone of Myanmar.