Collection of goose down and matters needing attention

1. Carcass feathering

That is, after slaughtering, the goose down will be collected all at once, and can be divided into three collection methods: hot water, steaming and dry drawing. Water scalding method is also called immersion scalding method and scalding method. After the goose is slaughtered, the goose blood is collected and released as much as possible to ensure the quality of the goose carcass and internal organs, no blood left in the carcass, white and beautiful body surface and good meat quality. It is best to remove the Daling (sharp Ling, Dao Ling, Wo Ling) from both wings before perm and store them separately and sell them. Otherwise, mixing with feathers will not only affect the quality of down, but also will be treated as waste. After slaughtering, perm the hair with hot water about 68 ℃, pull out all the hair and collect all the down. The steaming method, which is about to slaughter the blood-drained goose and put it on the steamer, is a method adopted by people in recent years to improve the utilization value of down. According to the classification and use of down structure to collect down, you can first pull out the wing feathers, then pull out the whole body feathers, and finally pull out the down feathers. Then use water scalding method to remove stubble and residual feathers from the whole body. When steaming, the goose body is laid flat in the steamer and cannot be affixed to the edge of the pot. It is also necessary to master the steam heat and time. When steaming for about 1 minute, open the lid of the drawer, turn the goose body over and try to pull out the wings on the big feather. If it is pulled out smoothly, it can be taken out, otherwise steam for a while. Dry drawing is a method to improve the value of down. When the goose is still warm after slaughtering, the operation method of plucking feathers is adopted, and the feather is selected and stored according to the structure and purpose of down. Then use the water scalding method to remove the remaining feathers.

Second, living depilation

It is a new plucking method that has sprung up in recent years. Its advantage is to obtain high quality down and increase the output of down. Because the first laying age of geese is late, or it is customary to postpone the laying age of geese to 7 months old, and some even postpone to 9-10 months old. If the hair is plucked alive at 75 days old, each animal can be plucked at least 3 times (75 days old, 117 days old, 160 days old) at least 40 days before the birth. The goose can mature at the age of 6 weeks. If the goose begins to pluck alive after maturity, each goose can be plucked 4 times before giving birth (about 45 days old, 87 days old, 120 days old, 162 days old). For example, 360g down can be obtained with an average of 120g per plucking for 3 times.

Third, goose body plucking will appear different degrees of skin bleeding and other stimulation, so that the goose body is damaged to a certain extent, at least a slight pore bleeding phenomenon. Therefore, attention should be paid to the following aspects when plucking:

1. Weak, malnourished or morbid geese cannot be plucked alive, so they should be singled out and not plucked. This kind of goose feather is not easy to pull out and will affect the goose's health.

2. After plucking, the goose is not allowed to take a bath in the water to prevent wound infection, slow healing and affect the health of the goose. You can decide when to go into the water according to the condition of the skin wound. Generally speaking, the goose after plucking is not allowed to take a bath after plucking within 7 days. In addition, it is necessary to keep the inner bedding (grass) clean, and the outdoor sports ground should have an Arbor in summer to prevent the goose from getting heatstroke caused by rain and direct sunlight.

3. If the goose has a poor appetite within 3-4 days after plucking, it is a normal phenomenon and there is no need to worry. It is mainly because the live plucking stimulates the goose skin to make the goose nervous and causes the body temperature to rise, as long as the feeding management is strengthened.

4. If the prolapse of anus is caused by improper Baoding or tension of geese in the process of plucking, wash the prolapse site with 2% potassium permanganate solution and send it back for a few days.

5. Goose plucking temperature requirements: as long as the outside temperature is not lower than-15 ℃, goose plucking can be carried out. But after plucking, geese should be kept in the shed for 2-3 days. The use of goose growth stage and stop-feathering period for live plucking does not affect the growth and development and egg laying performance of geese, but also can prevent feather flying caused by natural molting and affect environmental hygiene. The down production was increased, the feeding cost of breeding geese was reduced, and the economic benefit was increased.