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Lamb fattening involves various methods, including grazing, confined feeding, and a combination of both. When conditions allow, raising lambs in groups can make management more efficient and enhance the overall fattening results. The choice of fattening method depends on local resources such as pasture availability, feed supply, labor, and economic factors. It is essential to select the most suitable and cost-effective approach based on the specific circumstances of each farm.
Selecting appropriate lambs for fattening is crucial. Healthy lambs with normal growth and development are ideal candidates. Lambs that have completed their lactation period are often suitable for fattening. Purchased lambs should be weaned or about to be weaned, which helps them adapt better to the new environment and reduces stress during the fattening process. To raise high-quality lambs, farmers should start by ensuring proper nutrition for ewes during late pregnancy. This ensures that lambs reach a weight of 20–30 kg by four months of age at weaning, providing a strong foundation for post-weaning growth.
The timing of lamb fattening plays a key role in maximizing economic returns. It is best to begin fattening in late spring or early summer, so the entire process takes place during the warmer seasons. This allows lambs to take full advantage of the abundant and nutritious forage available in summer and autumn, reducing feeding costs and promoting faster weight gain. Slaughtering around the Mid-Autumn Festival and National Day offers a strong market demand and higher selling prices, leading to better profits.
Before starting the fattening process, several preparations must be made. These include securing adequate feed, water, housing, equipment, and trained staff. Lambs should be weaned and acclimated to solid feed before the fattening period begins. Other important steps include dipping in medicinal baths, vaccinations, castration, and encouraging social behavior through grazing and feeding practices.
Fattening is typically divided into three stages: initial, mid-term, and late. During the early stage, the focus is on monitoring lambs’ adaptation to the new environment, checking for any signs of illness, and ensuring normal feed intake. Adjustments to feeding plans may be necessary based on individual performance. In the mid-term, the amount of supplementary feed increases, with a greater emphasis on protein-rich diets to support growth. In the late stage, energy-dense feeds are introduced while reducing the proportion of protein to improve meat quality. Feed quantities should be adjusted according to the weight of each lamb, following established feeding guidelines to achieve optimal weight gain. Throughout the process, it's important to regularly monitor the health and growth of the flock, making timely adjustments to the fattening strategy as needed.