Cold weather in winter is an unfavorable time for the breeding industry. It can adversely affect the production of meat, eggs, milk, growth and development, and reproductive performance of livestock and poultry. In order to protect the balanced development of livestock and poultry productivity, the Production capacity, This special issue introduces several wintering high-yielding husbandry and management techniques and disease prevention and control technologies for farmers' reference. First of all, we must group the ducks. Resolutely eliminate old, weak, sick, disabled and low-yielding ducks to reduce death and feed consumption. Second, strictly control the room temperature. Overwintering ducks are critical for keeping warm and cold, and the temperature inside the shed must be kept above 5°C to ensure high yields. This requires that after feeding the ducks every night, the duck sheds must be enclosed and fenced, and straw or wheat straw woven around the shed must be used to enclose the sheds. The surrounding area should be covered with a layer of plastic film, especially the roof covering. Can't be less than 5 cm thick. The third is to thicken the grass. In the egg production area around the duck house, 30 cm thick clean, soft straw, wheat straw and other forage are used. After the eggs are shed in the morning, the old grass in the nest can be spread in the duck house. Before each night, the duck group enters the house. Add new grass for the production of egg nests, so that the gradual accumulation of mat grass, a number of sunrise once, both warm and save manpower. The fourth is to maintain nutrition. The wintering period of laying ducks must not only protect the cold but also produce eggs. The energy consumption is very large. The proportion of corn and other energy feeds must be appropriately increased, and the amount of feeding should be increased by 10% to 15% compared with summer and autumn, and sufficient green feed or timing supplements must be provided. Vitamins A, D, E. Add 3% to 5% of fat to the duck and duck feed, and feed the chopped cabbage or radish pods at noon every day. The effect is better. Fifth to add night food. The winter nights are long and short, and the nighttime temperatures are low. Adding a warm feed at night can not only increase the nutrition of ducks and ducks, but also help the ducks to keep warm and increase the egg production rate by more than 10%. However, at night feeding should pay attention to two points: First, must provide warm drinking water, and second, night food in corn and other high-energy feed, protein can not be too much. The sixth is to drink hot beverages. In winter, the climate is cold and the ducks consume more calories. Not only must provide adequate feed, but also need to pay attention to the fact that it is necessary to do hot-feeding of warm drinks, fine ingredients must be reconciled with warm and hot water, drinking water must also be fed to warm and hot water, the temperature to maintain the best around 38 °C, Avoid drinking ice water. The seventh is to fill the light. In winter, when there is less natural light, the activity of secretory glands in the duck's pituitary gland is reduced and the egg production rate is greatly reduced. This requires artificial supplemental lighting. The general requirement is that the daily lighting time can not be less than 16 hours. A 60 watt light bulb can be installed in the duck shed for every 30 square meters. The light bulb is 2 meters high from the back of the duck, and the top cover is installed. Turn on the light at regular intervals. Practice has proved that filling light ratio can not increase light production can increase 20%. The eighth is to increase the stocking density. It is better to feed 8-9 ducks per square meter for the density of overwintering ducks, which is beneficial to the self-heating of ducks. Finally, we must strengthen the prevention and control of the disease. Once diseased ducks are found, they must be promptly isolated, diagnosed and treated, and the ducks must be sterilized.

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