The differences between white duck down and white goose down:

1. Source

• White duck down: It comes from ducks and is the down obtained from the abdomen and other parts of ducks. There are various duck breeds, such as Peking ducks and Cherry Valley ducks, which are all sources of duck down. The production of duck down is relatively large because the scale of duck farming is extensive and the growth cycle is relatively short, so the supply of duck down on the market is relatively sufficient.
• White goose down: It is taken from geese, mainly the down from the abdomen of geese. Common breeds such as Huoyan geese and Wanxi white geese can provide high-quality goose down. The growth cycle of geese is longer than that of ducks. Generally speaking, it takes 3 to 4 months for geese to grow up for down collection, while it may only take 2 to 3 months for ducks. Therefore, the production of goose down is relatively less than that of duck down.

2. Thermal insulation performance

• Loftiness:
• White goose down: It has a higher loftiness. Loftiness refers to the volume occupied by a certain amount of down in a specified pressure and container. The filaments of goose down are relatively long, usually reaching about 2.5 to 3 centimeters, and the filaments of down are intertwined with each other to form a stable spatial structure. For example, the loftiness of high-quality white goose down can reach 700 to 900 cubic inches per 30 grams, which enables goose down to store a large amount of air. Since air is a poor conductor of heat, more stored air means better thermal insulation effect.
• White duck down: It has a relatively lower loftiness. The length of the filaments of duck down is usually about 2 to 2.5 centimeters, and the air layer formed is relatively less than that of goose down. Generally, its loftiness is between 500 and 700 cubic inches per 30 grams. Therefore, under the same filling amount, the thermal insulation performance of white goose down is better than that of white duck down.
• Thermal conductivity:
• The thermal conductivity of white goose down is lower than that of white duck down. The lower the thermal conductivity, the worse the ability of the material to conduct heat, which means it can better prevent the loss of heat. The microscopic structure of goose down makes it perform better in preventing heat transfer, which is also an important factor for its good thermal insulation performance.

3. Odor

• White duck down: Ducks are omnivorous animals with a complex food source, and their down is prone to having a fishy smell. This fishy smell can be alleviated through cleaning, disinfection and other treatments during the processing process, but some low-quality white duck down products may still retain a slight odor.
• White goose down: Geese are herbivorous animals, and their food is mainly grass and other plants. The odor of their down is relatively light. After appropriate processing, white goose down products usually do not have obvious odors and smell relatively fresh.

4. Price

• White goose down: Due to its better thermal insulation performance, lighter odor and relatively less production, the price is usually higher than that of white duck down. Generally, the price of white goose down may be about 1.5 to 2 times that of white duck down. However, the price will also be affected by various factors such as brand, down quality grade and market supply and demand.

5. Durability

• White goose down: The filaments of goose down are relatively tough. During the long-term use process, such as repeated washing and wearing, the filaments of goose down are not easily broken and knotted. This makes white goose down products still able to maintain good loftiness and thermal insulation performance after being used for a long time.
• White duck down: The filaments of duck down are relatively fragile. After multiple washings, the filaments of duck down may be broken, leading to the knotting of down, which will affect its loftiness and thermal insulation effect. However, if attention is paid to the washing method and maintenance during the use process, the service life of white duck down products can also be extended.

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