Captive ducks are raised at a density of 6-8 birds per square meter (from 100 days to the elimination) in the duck or duck shed. This method has a large scale, high egg production rate and good economic benefits. Captive breeding with local fine breed ducks is appropriate, such as Zhejiang Shaoxing duck, Fujian mountain duck, Jiangxi Yichun duck, Sichuan ma duck and the world-famous egg duck duck, Kaki, Kangbei duck and so on. First, the preparation of the shed. A workforce can house 500-1000 ducks. The construction of the shed should be adapted to the amount of feeding. The duck house should be selected on a high ground, with a flat ground and close to the riverside or larger pond. Sitting south to the south, with a height of 6 meters and a height of 2 meters, the size of the shed is determined by the density of 6-8 per square meter. A 120-square-meter-150 square-meter sports ground was built in front of the duck house, and the terrain was tilted toward the water side to connect the duck house, sports ground and water area. Second, feeding and management. 1, timely production. Premature premature egg production is premature, and too late will affect economic income. The opening time should be around 150 days. The practice is to control the feed quality of 100-day-old ducks and let them eat half of the compound feed and half of the crude feed to support the large stomach. After 12O days of age, the number of feedings was gradually increased to improve the quality. 2, pay attention to ingredients. Duck and duck feeds are mainly grain (50%-60%), appropriate and cake (10%-20%), fishmeal or bean flour (10%-15%), shell powder (1%), salt, and more. A variety of vitamins and additives mixed feed, the amount of fish meal increase or decrease according to the level of egg production. If fishmeal is reduced, cocoons, cockroaches, small fish, shrimp, etc. can be used instead. Feeding 4 times -5 times a day, each duck fed a daily dose of about 125 grams - 150 grams, can be fed twice a day on the peripartum. 3, incentives. The stronger the libido of the duck, the more eggs are laid. There must be a sufficient number of ducks in the duck group. A small herd was reared with 1 male duck for every 100 female ducks; a large herd was raised and 1 male duck was raised for every 200 female ducks. The proportion of males and females in breeding ducks is 20-30:1. During the maternity period and the moulting period, the male ducks are isolated to avoid harassment. 4, light. During the laying of eggs. Turn on the lights for 3 hours to 4 hours at night and turn on the lights for 1 hour before dawn. The effect of day and night total light will be 14 hours to 16 hours (using natural light during the day) to promote duck gonad vigor. 5, litter. The duck house is covered with rice hull, straw or wood litter on the ground. The duck dung is covered once a day with padding, and the pad is thicker at the laying site. The ventilation of the duck house is combined with the ventilation of the duck house to prevent the heat from cooling and keep the duck house clean and dry. . 6, to prevent falling eggs. When ducks have smaller eggs, smaller shells, thinner shells, delayed egg production, fear of water, wet feathers on the shore, that is to say, “falling eggs†in duck houses, they must be prevented in time: First, improve feed quality, especially Increase protein feed; Second, often drive the ducks, increase the amount of exercise; Third, increase the light; Fourth, duck house insulation. It is best to add liquid cod liver oil. Each duck is fed with 1 ml of spices every day and fed for 3 days.
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