Analysis of characteristics of bred ducks

1. For example, the weight gain of ducks increases rapidly. From the weight of the Shaoxing ducks and the growth law of feathers, it can be seen that the absolute increase of body weight rapidly increases after 28 days of age, peaks at 42-44 days, decreases gradually from 56 days, and then tends to Steady growth, weight to 16 weeks of age is close to adult weight.

2. The feathers grow rapidly. The ducks are still taken as an example. At the end of the brooding period, the ducklings are still covered with fluff. The brown-red sparrow feathers are about to grow. By the time of 42-44 days, the feathers on the chest and abdomen have become long and smooth. Achieving a "slide bottom", 48-52-day-old young ducks have reached "three-faced light," and the main wing feathers have grown from 52 to 56 days of age, and the abdomen of 81 to 91-day-old ducks has been replaced with a second new feather, 102 days. The duck body plumage is long and the main wing feathers of both wings have been “crossed the wings”.

3. After 10 weeks of sexual development in young ducks, follicles on the ovaries grow rapidly during the second moult. After 12 weeks of age, the development of sexual organs is particularly rapid. Some young ducks reach 90 weeks of age. Only began 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.

4. With the increase of age, adaptable young ducks have increased their ability to regulate body temperature, and their ability to adapt to changes in outside air temperature has also increased. 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.

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