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Efficient Fattening Techniques for Small-Tailed Han Sheep Lambs
The success of grazing-based fattening depends on three key elements: water, grass, and salt. These are essential for the health and growth of lambs. In the early stage of grazing, it's advisable to use lower-quality pastures or slopes. As the grazing period progresses, especially in the second half, better-quality grasslands should be prioritized. In the final phase, high-quality pastures such as those in mountainous areas or autumn grazing zones are ideal for maximizing weight gain.
For dietary fattening, a balanced feed mix is crucial. The diet should consist of 60–70% roughage, 10–20% straw, and 30–40% concentrated feed, allowing lambs to eat freely. This ensures they receive enough nutrients without overfeeding.
The mixed fattening method combines grazing with supplementary feeding. Typically, lambs are allowed to graze for about 8 hours a day, with two daily feed supplements—one in the morning and one in the evening. The concentrate feed should range between 250 to 500 grams per day, depending on the lamb’s age and condition. There are no strict restrictions on the type of raw materials used.
In situ fattening involves raising lambs in their native environment, while ex situ fattening refers to moving them to more favorable conditions. Two common methods include raising lambs in mountainous regions and fattening them in the plains, or breeding in pastoral areas and then moving them to agricultural zones. This approach improves growth rates and overall performance due to better environmental conditions and access to higher-quality feed.
Several additional practices can enhance the fattening process. For instance, using hormones to synchronize estrus allows for controlled breeding, making it easier to manage large flocks and improve efficiency in commercial lamb production. Artificial insemination should also be utilized to introduce high-quality rams, ensuring better meat quality and easier management of the flock.
Crossbreeding with breeds like Dorset, Charolais, and Suffolk—known for their superior meat traits—can significantly boost fat production when used as male parents. Castrating lambs between 1 and 3 weeks of age helps improve meat tenderness, reduce odor, and make the animals calmer and easier to handle.
Early weaning at around 2 months old not only supports healthy development but also allows ewes to rebreed sooner, increasing the number of births per year and improving overall productivity. Additionally, applying insecticides before and after weaning helps protect lambs from pests.
To ensure optimal growth, careful feeding and proper feed formulation are essential. A recommended feed formula includes 40% hay, 37% corn meal, 5% soybean cake, 4% cotton cake, and 14% corn. With this mix, lambs can reach 40 kg within 5 to 6 months, making them ready for slaughter. By combining these techniques, farmers can achieve efficient, high-quality lamb production.
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Rating ruler, also known as a grating ruler displacement sensor (grating ruler sensor), is a measurement feedback device using the optical principle of grating.Grating ruler is often used in the closed-loop servo system of CNC machine tools, which can be used to detect linear displacement or angular displacement. The output signal is digital pulse, which has the characteristics of wide detection range, high detection accuracy, and fast response speed. For example, in the CNC machine tool is often used to detect the coordinates of the tool and the workpiece, to observe and track the tool error, and to play a role in compensating the tool motion error.
Rating Ruler
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