Fire hatching duck technology
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(I) Disinfection of eggs Eggs that are easily contaminated and contaminated by bacteria are one of the causes of embryonic death. Therefore, the contaminated duck eggs must be sterilized. The hatching rate can be increased by about 20%. Disinfection methods are as follows: 1. Dipping: Use 1% chloramine solution or iodine solution (iodine 5g, potassium iodide 8g, water 1000 ml), soak the eggs for 10-15 minutes, and after the eggs are fully dried, they can be hatched. The temperature of the solution when immersed is 35-40°C, and the immersed eggs can be stored for 3-5 days. 2. Fumigation: According to the standard of 1 cubic meter with 40% formalin 23 ml and potassium permanganate 5 g. Place the egg tray full of eggs on the disinfecting rack, and then cover the disinfecting rack with plastic film, then pour the formalin into the pot placed on the floor, then pour potassium permanganate and immediately seal it. The eggs can be hatched after removing the eggs within half an hour. (b) Incubation rooms and indoor facilities General housing can be used as a hatchery. The northern or western rooms are better, so it is easier to keep warm and keep eggs. Interior doors and windows to be repaired, keep ventilation on the window wind bucket. 1. Fire pot: Fire pot is a source of heat for hatching. The burning fire is called enthusiasm, and the burning fire is called Wen Hao. The body of a carcass can be set up with a few more stoves, and firewood can be used to increase the temperature. One hundred and one hundred should be level, good burn, do not smoke. Straw wheat straw. 2. Spreading (ie egg bed): Use a 3.3 cm thick board to form an elevated stand. Each part of the spreader is tied tightly and placed in the center of the room. It is divided into upper and lower floors. The lower storey is about 1.6 meters from the ground. The distance between the upper and lower floors should be convenient for people. The above operation. Spread a layer of sorghum stalks on the stand, and stalks of straw about 1 cm thick on the sorghum stalk. 3. Stalls: diameter 6.6 cm, built-in ç³ ç§•, there are long and short, to block eggs and eggs. Keep warm with quilts and single covered eggs. According to the size of the face to determine the number of quilts. (C) The hatching process and management generally adopt the flow operation method, a batch of 6-7 days. According to the temperature requirement of the duck embryo in the incubation process, it can be divided into several steps: the first step is to warm up; the second step is to move into the warm spot; the third step is to move into the stall; the fourth step is to move into the stall and hatch. 1. Pay attention to adjusting the room temperature. The room temperature should be maintained at 27-30 °C, when the shell is kept at 30-34 °C, the egg surface temperature is 37.8-38.6 °C. Check the temperature usually 30 minutes. The first 1-7 days of incubation on the enthusiasm, on the 8th to 14th days in the Wenyu, on the 15th to 21st days in the booth, on the 22nd to 28th days in the next booth. Burning the fire in the armpit warms the buckwheat noodles; Use quilts or temperature adjustments on the booth. 2. Temperature regulation. During the hatching process of the duck eggs, egg weight is reduced due to evaporation of water in the eggs. It is better to lose about 13% of the weight of the eggs. The relative humidity can be measured with a wet and dry ball table. The relative humidity during the incubation period is 70% on day 1-8, 60%-65% on day 9-16, 50%-55% on day 17-24, day 25-28, and 65%-70%. In this way, the initial relative humidity is high, which can avoid excessive evaporation of water in the egg. In the medium term, more water needs to be removed, the relative humidity is lower, and the humidity in the later period is increased, which facilitates hatching of the ducklings. 3. management. (1) Turning eggs: From the 1st day of hatching of duck eggs, until ducklings are hatched, they can turn eggs 6-8 times a day and night. It is better to turn them over according to circumstances. Turning the egg can change the position of the embryo, promote the movement of the embryo, heat evenly, and prevent the adhesion of the embryo to the eggshell. When it is found that the temperature is high and the temperature difference between the upper and lower layers, the center and the edge is large, the egg is immediately turned, the position is changed, and the temperature is adjusted. On the 26th day, the egg is erected to facilitate the ducklings to break the shell. Fire eggs hatching turn eggs by hand, must be careful to minimize the rate of damage. (2) Egg inspection: Eggs were hatched on the 5th, 13th, and 24th days of incubation. Looking through the lights or sunlight, pick out lean and dead eggs. It is also possible to distinguish dead eggs from egg temperature and egg color. Hands feel cold or the tip of the egg is dark and dead embryos can be handed out. (3) Ventilation: The incubator room should be ventilated and ventilated to ensure that the embryos often breathe fresh air and can increase the hatching rate. (4) cool eggs. The purpose is to help the embryo radiate heat and breathe fresh air. Duck eggs contain more fat, and the calories generated with the development of the embryo increase. If the temperature is improper, it will easily lead to death. On the 7th to the 15th day, cool eggs 3-5 times/day; 15-20 days, 5-7 times/day; 20-27 days 10 times/day. Every 15 to 20 minutes, you can also cool eggs once every morning and evening to reduce the egg temperature to 32-34°C and return to normal temperature after about 1 hour. (5) Water spray: The hatchery’s practice is to spray water from duck eggs on the 7th day, spray 2–6 times per day, spray every 2 hours on 24th to 25th days, and on the 26th to 27th days. Sprayed once an hour, the spray was finely sprayed on the 7th to 22nd days, and driped on the 23rd to 27th day. The water droplets were evenly sprayed on the egg surface. When the egg temperature is high, you cannot spray water immediately. The usual spray temperature is 40°C, and it is advisable to maintain the normal temperature after spraying. After egg surface moisture evaporates, it is covered again. (6) Shelling: Normal hatching begins on the 26th day and begins shelling until the 28th day. At this time, the hairy ducklings and egg shells should be removed every 2-3 hours.