又硬又粗进去好爽A片春色视频,大量国内自拍AV手机观看,99re这里只有国产中文精品国产精品,人妻无码AV一区二区三区

We all know that the purpose of using duck raising equipment in many farms is to facilitate management. The farms that breed ducks also hope that their ducks can grow rapidly and shorten the time of going out of the market. However, some owners of farms have recently reported that their ducks grow slowly. Actually, this is not caused by duck raising equipment, but by a mixture of many factors So today, Pratt & Whitney will take you to analyze the reasons why the growth rate of duck is slow.
1. Purchased inferior duck seedlings: it is believed that all farm owners have their own channels for purchasing duck seedlings, but some small and medium-sized farm owners choose duck dealers to introduce duck seedlings. If the duck seedlings purchased from duck dealers are hatched in advance or delayed shell or with eggs that do not meet the standards, such duck seedlings belong to inferior duck seedlings, inferior duck seedlings The mortality rate is high, and the growth rate is slow compared with the normal duck.
2. The variety of duck seedlings is not good: when selecting and introducing duck seedlings, many farm owners choose cheaper or even informal hatcheries to buy duck seedlings in order to reduce the breeding cost, but the quality of duck seedlings in hatcheries is not guaranteed, and the immunity and health of duck seedlings are unknown, so Pratt & Whitney reminds the owners of major farms to choose formal hatcheries with complete certificates When entering duck seedlings, do not choose informal hatcheries to avoid economic losses caused by inferior duck seedlings.

3. Dehydration of duck seedlings: when we purchase duck seedlings, it must take a long time for transportation. Once the duck seedlings are not fully replenished with water during transportation, it will cause dehydration of duck seedlings, which will lead to poor growth in the later period of the duck seedlings, and the growth of duck seedlings cannot be guaranteed in the later management.
4. The nutrition of feed is not balanced: the speed of meat duck coming out of the market is relatively fast, so the requirement of feed used for breeding meat duck is also relatively high. Because the growth cycle of meat duck is different from that of egg duck, special attention should be paid to the preparation or purchase of feed by oneself. The feed should be configured or purchased according to the nutrition demand of meat duck in different periods.
5. In order to do a good job in epidemic prevention of duck equipment: disinfection and epidemic prevention is a basic work that must be paid attention to for duck equipment. It is not only necessary to regularly disinfect and eliminate pathogens in time, but also to choose several different disinfectants alternately to avoid drug resistance of bacteria and other microorganisms. Only doing a good job in disinfection and epidemic prevention can ensure the healthy growth of duck seedlings.
6. Using duck equipment for scientific management: not only the disinfection and epidemic prevention work of duck house needs to be paid attention to, but also the environment, temperature and humidity of duck house need to be done well by the owner of the farm. Too high or too low temperature and humidity will affect the feeding of the duck seedlings, thus affecting the growth speed of the duck seedlings, delaying the time when the duck seedlings come out of the market, and bringing economic losses to the farm.
The above are six reasons why the growth rate of duck seedlings is slow, compiled by Pratt & Whitney. If you want more questions, you can pay attention to http://www.njxunda.cn/