Sheep breeding can bring about good economic benefits both on the plateau and plains. The following is an analysis of the role of pasture tree species and shrubs in sheep management. Specific to the sheep industry, appropriate shrub cultivation can increase sheep production, improve animal health and welfare, and can also produce ecological benefits.
For ewes littering, the current outdoor production of lambs and outdoor shading are already mature methods, because it reduces labor costs, and reduce the risk of herds and improve survival of lambs. Due to unpredictable weather factors, many people now believe that outdoor lambing is a great risk and indoor lamb production is still preferred in many areas. However, in the area where practice of outdoor lambs and lambs has begun, the data show that outdoor lambing has become more common. The advantage of the outdoor lamb-producing sheep ring is that it can greatly increase the survival rate of the lamb. The cold is one of the causes of the loss of the lamb. About one third of the lambs died because of cold and hunger. Wind shelter, good drainage system, and good interaction between ewes and lambs can effectively increase the lambing rate. By creating interactions between ewes and lambs under appropriate conditions, lamb mortality can actually be reduced, and interaction of lambs with ewes can reduce disease. Studies have shown that the loss of lambs is reduced by up to 30% in cold, humid environments. The greatest benefit of outdoor sheepfolds is the reduction of the effects of moisture, and the effect of wind and cold on the effects of shrubs is also greatly reduced. A good outdoor environment allows the ewes to better feed the lambs. More colostrum intake reduces disease and increases resistance to cold and moisture.
The design of outdoor lambs and lambs should pay attention to the proper cultivation of shrubs as a cover. Use shrub-intensive areas to ensure that shrub coverage reaches a reasonable level. Between the trees and the shrubs, there should be a space for free movement of the sheep. At the same time, it should also be able to block the wind. The staggered planting of trees and shrubs to fill the gaps between various plants can provide a good warm-up effect. Case Study In the 1990s, a group of Welsh farmers decided to change their farming methods to establish a breeding enterprise, which was supported by many farmers in the surrounding area. By 2001, the sheep-breeding company had owned 10 farms and a watershed of 1,000 hectares.
Due to the relatively high cost of indoor sheep pens, the company needs more hardy sheep to reduce costs. The farms owned by the company are at high altitudes and are wind and cold. They realize that it is necessary to restore hedges and woodlands that were once overlooked, and to plant new shrubs to increase outdoor lambs. They use hedgerows and woodlands to build fencing and herding sheep on steep hillsides. Ponds are made in wet areas to improve drainage. After practice, outdoor lambs are drier than indoor sheep pens, effectively reducing the incidence of foot-hoeing and liver flukes. They also use trees as a barrier around the farm to reduce the chance of contact between the flock and other creatures in order to improve biosecurity. Since the beginning of the outdoor lamb raising project, they have now planted 120,000 new trees and various types of shrubs, restored 16.5 km of hedgerows, and nearly 5% of the land has become "forest land." This effect has not been sacrificed at the expense of herd productivity, and other benefits have become more pronounced. In addition to providing shelter for the flock, planting shrubs also reduce the loss of water and soil. At the same time, shrubs growing around the outdoor lamb-shedding pens can reduce the wind speed, thereby reducing the evaporation of pasture tussock water. The sheep penis also has the effect of increasing soil temperature and extending grass growth in early spring and late autumn.
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