Hello, the main cause of allergic rhinitis is personal allergic constitution and repeated contact with common allergic factors in the environment, such as insects, mites, pollen, dust, paint, milk, peanuts, seafood and so on. In the treatment, we should first determine the specific allergens through the determination of allergens and avoid contact in a targeted manner, and then actively carry out anti-allergic drug treatment in the event of acute attack. Daning, the third is to actively control and prevent recurrence and avoid catching a cold. Long-term nasal washing with normal saline is helpful to improve microenvironment and reduce recurrence. I wish you the best of health!

To raise otters, it is necessary to build a feeding room with an area of 2.8×3.5m and a 3× 1m pool. There is a wooden box (1×0.6×0.8m) in the room, with a small hole in it and hay in it. The outside of the small room is a concrete floor with a barbed wire fence (3 meters high).

Feeding and management

Generally, fences are used and open-air cement is used. The ground sports ground, with an area of 4.5× 10.5m, is surrounded by barbed wire, with a height of 3 m. There is a 3×6×0.8m swimming pool on the ground of the sports ground, and clean water should be prepared in the pool. The playground is connected with a small feeding room, covering an area of 2.8×3.5m, with a pool with a height of 2×1m.. There is also a wooden production box with the specification of 1×0.6×0.8m, which is covered with 1 observation holes and filled with hay.

Young otters can be weaned 40-0 days after birth, but after weaning, they should be caught in another pool with a density of 8-9. Young otters grow fast and can reach their annual weight after 1 year. Under the condition of artificial feeding, otters are mainly fresh water miscellaneous fish, and each otter is fed 0.8- 1.2kg every day, with a small amount of animal meat residue, internal organs, grains, vegetables and so on. In cold weather, the feed standard needs to be raised by 25%. When the temperature is high in summer, you can feed some small fish, loach, frog and green feed. Adult otters are fed three times a day and twice a day in winter. Young otters can feed freshwater fish four times a day, or they can use rice, minced meat and fish powder instead of fresh fish. Male and female otters should be raised separately in the non-breeding period, and male otters should be caught in the female otter pond to mate in the breeding period. Otters are easy to tame. After domestication, otters can listen to people's calls and feed from their hands. It is known that the Moscow Zoo in the former Soviet Union once did an experiment of raising otters in dry land. When I was young, I raised small otters in dry land and refused to enter the water when I grew up.