First, weight gain is fast. For example, from the weight of Shaoxing ducks and the growth law of feathers, the absolute growth of body weight increases rapidly after 28 days of age, peaks at 42-44 days, decreases gradually from 56 days, and then It tends to grow steadily, and the body weight up to 16 weeks is close to adult weight. Second, the rapid growth of feathers is still Shaohu duck, for example, at the end of the brooding period, the ducklings still covered with fluff, brown-red sparrow feathers will grow out, and to 42 to 44 days when the chest and abdomen feathers have been long Qi, formation Smooth, reaching the "slide bottom", 48 to 52 days of young ducks have reached "three sides of the light", 52 to 56 days have grown the main wing feathers, 81 to 91 days old duck has been replaced with a new second feather, The 102-day-old ducks have long plumage, and the wings of the main wing have been "fed." Third, adaptable young ducks increase with age, body temperature regulation ability, the ability to adapt to changes in outside air temperature is also strengthened. At the same time, due to the feathers, the ability to keep out the cold has also gradually increased. Therefore, young ducks can be reared at room temperature, and the rearing equipment is relatively simple and can even be raised in the open air. With the increase of body weight, the young ducks also increase their digestive organs, increase the volume of stored feed, and increase their digestive capacity. The young ducks in this period showed strong omnivores and could make full use of natural animal and plant feed. During the breeding period, fully utilize the characteristics of the young ducks, carry out scientific feeding and management, strengthen exercise, and increase the viability; make the growth and development neat; the opening period is the same, and lay a good foundation for high production and stable production during the laying period. IV. Rapid development of sexual organs After 10 weeks of age, during the second moult, the follicles on the ovary grow up quickly. After 12 weeks of age, the development of sexual organs is particularly rapid. Some young ducks reach 90 weeks. It only starts to lay eggs. In order to ensure the full growth of the young duck's bones and muscles, it is necessary to strictly control the sexual maturity of the young ducks, which is very necessary to improve the performance of future egg production.
Adult diapers are disposable urinary incontinence products, one of the adult care products, and a disposable diaper mainly suitable for incontinent adults.
Most products are flaky and shorts type. Use adhesive sheets to connect into a pair of shorts. The adhesive sheet also has the function of adjusting the waist size so as to fit different fat and thin body shapes.
Generally, the structure of diapers is divided into three layers from the inside to the outside. The inner layer is close to the skin and made of non-woven fabric; the middle layer is water-absorbent fluff pulp, added with polymer water-absorbing agent; the outer layer is an impermeable breathable film.
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