First, according to the egg The purpose of the egg is to check the development of goose embryos during hatching and to check the suitability of the hatching conditions. At the same time, it is also possible to eliminate eggless and embryonic eggs, which will help improve hatching conditions and improve hatchery performance. 1, the first time the eggs in the 6 to 7 days, should be promptly removed no eggs, dead embryonic eggs, and check the breeding rate of geese and breeding eggs and preservation conditions are appropriate. 2. The second time the egg was placed on the 15th to 16th day, the normal embryonic egg allantoic was removed at the same time as the embryonic ammonia. 3. For the third time, the eggs can be sampled and checked as a reference for adjusting hatching conditions and hatching on time. This time, according to the egg, according to the degree of embryonic development at different times, as the basis for adjusting the hatching conditions. Second, egg weight changes With the increase of embryonic age, embryo eggs due to the evaporation of water, the consumption of protein and egg yolk nutrients, the weight of embryonated eggs is reduced according to a certain percentage, generally embryonic eggs lose weight 1.5 to 2% on the fifth day of hatching, weight loss on the 10th day 11～12.5%, the weight of the gosling when hatched is 62-65% of the egg weight. During the hatching process, the sample can be weighed and measured. According to the change of the size of the air chamber and the shape of the late embryo, it is appropriate to know and judge the relative humidity. . Third, the observation and necropsy of dead embryos Anatomical hatching of dead embryos detected at different ages and analysis of the cause of death can improve hatchery management. The first observation is whether the fetal position is normal, the appearance and development of various tissues and organs, and whether the skin, internal organs are congested, bleeding, edema, etc. , comprehensively determine the cause of death, if necessary, embryonic eggs for microbial testing, check the quality of eggs, whether infected with infectious diseases. IV. Observation and inspection of hatching Under normal hatching conditions, hatching can be seen on the 29th day of hatching, and hatching can be seen 12 hours after the clam shell. The general half-day from 30 days to the first half-day of the 31st day is the peak of the hatching, with 31 days of hatching. Basic finish. If the hatching conditions are not normal, the hatching time is earlier or delayed, the peak of hatching is not obvious, the hatching time is longer, and some of them fail to hatch even after 31 days. The cause should be immediately identified and effective measures should be taken. Check from the appearance of the goslings: start from the hatching of the goslings, healing of the umbilicus, villi, demeanor and figure. The umbilicus of healthy youngsters absorbs well, the villi are clean and shiny, the abdominal villi dry and cover the umbilicus, and the body is well-balanced, powerful and powerful, indicating that the hatching conditions are suitable. Poor young fluff contamination, poor healing of the umbilicus, poor absorption of yolk, large abdomen, unstable standing. Neat and tidy, indicating that the hatching conditions are not normal. Combine the observation of the hatching situation with the inspection of the health status of the goslings, analyze them together with hatching records and hatching results, summarize the experience, and continuously improve the hatching effect.
Chunmee 4011 is one of the treasures of Green Tea.The shape is tightly tied, well-balanced, grey-green frost, oily and fragrant. The picking standard of fresh leaves is the initial development of one bud, one leaf and one bud and two leaves. For those with thick white hair and strong buds, six processes are selected, such as spreading, killing, rolling, baking, frying and re-drying. Chunmee 4011 Green Tea has special quality and health function, its effect is like rhinoceros horn, has cool and refreshing detoxification, bright eye decrease internal heat's wonderful effect, can treat "fire disease".
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Generally 3 times during the hatching process: 