Keeping the shed warm and cold When working in cold weather, keep the temperature in the shed at 5°C or higher late at night. Therefore, in addition to leaving a certain number of window doors around the shed to ventilate and ventilate, the entrance to the thief could be sealed with straw, and the double wall thick straw should be added to the north wall. Plastic film; straw roof is also covered with straw. Pay attention to keeping the shed clean and dry. Thicker bedding padding Spread 10-20 cm thick straw or 10 cm thick fine wood shavings in the surrounding egg production area. When the eggs are collected early in the morning, the straw is withdrawn. After the excrement has been removed, a clean layer of straw is placed in the house. In this way, each night before the ducks return home, the fresh eggs or fine wood shavings in the egg production area will have better insulation effect, which will save manpower. Padded mat litter avoid moisture, or egg duck easy to catch cold. Feeding nutrient-rich feeds The ducks in the cold season consume a portion of the heat to fight cold attacks. Therefore, the feed of ducks should be rich in nutrients, with a reasonable mix of feeds to properly increase the high energy feed such as corn, so that the crude protein content in the feed reached 18% to 20%, calcium 2.5% to 2.8%, phosphorus 0.45% to 0.55 %; special attention should be paid to ensure that the ratio of calcium in the diet, because too low, ducks, gonadotropin secretion will be reduced, affecting production. In addition, it is necessary to quantify the amount of added green feed; supplement with multiple vitamins, there should be 40 to 60 mg per kg of diet. To feed the ducks with a night meal To keep the ducks at a higher rate, four times a day must be fed and the fourth meal should be fed at night. Night-time meals are given to ducks at night from 10 to 11 o'clock in the night, compared with ducks that do not feed on night-bowls, which can increase egg production by 7% to 9%. When feeding, the feeding trough in the duck house should be increased by 5 to 6 so that each duck can eat the night meal, so as to ensure the uniformity of the egg production in the duck group and facilitate the management of large groups. Providing enough clean warm water When the temperature outside the shed is below 5°C, if the ducklings drink ice water or very cold water, it will easily cause stress and reduce the egg production. Because the drinking water is too cold and the palatability is poor. When the duck and duck drink water is insufficient, the body's digestion and absorption functions are affected. Therefore, the drinking water of the duck and duck should be clean and warm, and the drinking water should be replaced overnight. At the same time, prepare enough water trays to prevent water cuts from occurring. Guaranteed illumination time Cold season Due to the shortened natural illumination time, the gonadotropin secreted by the pituitary gland of ducks is reduced, resulting in decreased egg production. Therefore, artificial light must be added to maintain the daily light time of 16 to 17 hours. The light intensity can be increased in the evening and in the morning. A 40 watt light bulb is used for every 20 square meters in the duck shed. In the middle of the night, a 15 watt light bulb is used instead of lighting to give the ducks a feeling of light and to stimulate the gonads of ducks. Activities to promote ovarian development. Adding water and exercise in the morning When the temperature outside the shed is low or weather conditions are poor, ducks and ducks may not release water. However, in the warmer weather at noon, the ducks must be driven off the sports grounds outside homes. Reduce the unpleasant stimulation around the egg duck house to keep it quiet, prevent outsiders from entering the house and disturbing the car and put a car tweeter around. When the ducks are in the water, the keeper must clean the shed in time, open the window door to ventilate and breathe, and spray with 0.3% to 0.5% aqueous solution of peroxyacetic acid to both disinfect and eliminate ammonia odor in the shed. Taste, supplement oxygen, reduce the stimulation of air pollution on ducks. Timely picking out the ducks and ducklings of the sick ducks into the sheds in the evening, they must be diligent in inspections and observations, and found that the ducks and sick ducks should be singled out from the ducks in a timely manner and fed in another bar to reduce feed loss. Do not feed moldy feed. There are continuous rain and snow conditions in the cold season. Poor feed storage can easily cause mildew and aflatoxin production. Ducks are very sensitive to this, so they must not be fed moldy feed. When the bedding is moldy, it must be promptly removed and replaced. Emphasis on Disease Prevention and Control One month prior to laying and during the rest period can be administered intramuscularly with attenuated attenuated vaccine for duck quail chickens, 1.9 to 2.0 ml per duck to prevent duck plague; 10 days later for intramuscular injection of live pasteurized vaccine for birds, 1.5 to 1.5 2.0ml prevent duck cholera. The duck house can be sterilized on a regular basis with a 1:200 killing and 2% caustic soda.
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