1. The spring feeding and management in the spring is at the time of preparation and breeding of the breeding seedlings. The southern region will enter the breeding season approximately in February and the breeding season in March; the northern region will enter the breeding season in March and the breeding season in April. The management points of each issue are now described as follows: (1) Preparation of breeding period A comprehensive inventory of the herd is conducted to check the body condition of the breeding rodents, to provide water supply to the pool in advance, and to increase the temperature in the nest. (10-12 degrees Celsius), promoting its estrus. Check whether there is a pair of males and females in the nest cage. For the male and female rats at the end of last year's estrus, the bulbs are placed at 50-60 cm away from the pool cover for several hours at 6-9 pm to promote estrus. At the same time, sufficient amount of concentrate feed, roughage (based on fresh poplar, willow branches, supplement of cabbage, carrots, and other vegetable feeds) for the breeding season and adequate prevention of epidemics. At this time, olaquindox should be added to the concentrate before and after the water supply to mix and feed 2 times. In addition, add 1 kilogram of powder or malt supplement to each 100 kg of fine material and continue until the breeding period. (2) Breeding period In addition to the same management as the previous period, this period is mainly to place branches or green grass on the sports ground to provide a hidden environment and to use it as a supplement for roughage and self-priming at any time. (3) Farrowing and lactating period In addition to the fine material for feeding and feeding during the breeding period, it is also necessary to use soybean milk or beef and goat milk to mix ingredients according to local conditions, so as to guarantee the normal feeding and mothering of the pups born. The nutrients needed for mating by mating mice. Feeding the roughage depends on the season's supply of fresh herbivores and branches. In addition to ensuring that it has enough fresh roughage to eat, it can also return to the inside of the nest and prevent the pups from accidentally crawling into the pool. (4) When the pups of the rearing period are 28-30 days after childbirth, the nest should be split in time to facilitate the production of the second child and mating of the third child. The littermates should be reared with their litter and provided with sufficient amount of concentrate and palatable roughage. The bath water in the pool should be filled at all times so as not to drown the pups into drowning. The pups can be bred in 3 months after they are divided into nests. 2. Summer management of feeding and management in the summer is almost the same as in the spring, but attention should be paid to hygiene and epidemic prevention, disinfection of the field area and tools, and timely detection of disease conditions. During the rainy season, 2 mg olaquindox tablets were fed every 10 days and fed once every 10 days. Since the musk rat is a herbivorous animal, the use of antibiotics should be forbidden to prevent digestive diseases due to disorders of the intestinal flora. In summer, mating, littering and tending of muskrats can be carried out at the same time. Because it is a multiple-parodied animal, it can be re-breeded within a few days after giving birth. At the same time, good pups should be breast-fed and young pups of more than one child can be nurtured. Bred. Therefore, it is necessary to keep the site quiet and provide adequate and clean bath water. 3. Fall management and management in the fall. The overwintering feed should be provided and winter hay should be stored. In addition, breeding muskrats are selected for breeding, and brooding rats of different nests are paired together to enter winter feeding. Insufficient nests can be raised in winter with the nest clusters, and the selection and matching of the seeds will be carried out after the breeding season. Before entering late autumn and winter, fresh water must be changed every other day or several days until ice is frozen. 4, the management of the season The management of the winter is mainly sufficient to heat the straw, the feeding of feed vegetables should be timely, observation should be adhered to. The main approach is: fill the pool with hay, so that the muskrats themselves can be ordered into a grass-hole orderly life. The feeding of feed vegetables should be adhered to once a day, and observe the activities and records.