In the winter, when the climate in the north is cold, the amount of drinking water in the water tanks is reduced, and the water in the water tanks is icing, so some of the market will withdraw the water tank, dilute the feed, and no longer feed the water. This practice is extremely harmful to mink farming. Because the concentration of modulated feed is not easy to grasp, the prepared feed is too thin to meet the nutritional needs of blisters. If the prepared feed is too thick, it can easily cause water shortage in the blisters, affect the metabolism, and it is not conducive to the excretion of toxins in blisters.
Winter is the breeding preparation period of leeches. The core of feeding and management is to promote the normal development of genital organs and adjust the body condition. It is necessary to fully meet the physiological needs of leeches for protein, fat, carbohydrates, and various vitamins. In this period, the intake of leeches is 275 grams per day, requiring 20-28 grams of protein per day, 5-7 grams of fat, and carbon. Compounds 11 to 16 grams. If the feed is diluted, the dry matter in the feed will be relatively reduced, and the intake of nutrients by the mink will be insufficient. The result is that the mink body is thin and the reproductive organs are developing slowly. Touch the public testicle test, found that it was a small, soft texture, resulting in reduced leeches libido, causing serious male infertility. The performance of the mother-in-law is not normal during the estrus period, such as the occurrence of hidden estrus, non-estrus, or estrus time, which reduces the mating rate in the market and increases the empty rate, which seriously affects the economic benefits of the market. If the prepared feed is too thick, the mink will not be able to drink water in a timely manner after eating. This will cause water shortage in the blisters. According to data, about 2/3 of the water in the animal body, of which 40% in the cell, 20% in the tissue, 5% in the blood. The animal's body loses all its fat and glycogen, loses even half of its protein, and can barely survive, but it will die if the body loses 10% of its water content. The digestion, absorption, and metabolism of various nutrients (proteins, fats, carbohydrates, vitamins, etc.) contained in leeches diets are performed in a moist environment. For example, saliva, gastric juice, and intestinal juice required for digesting feed contain 98% of water, and blood that transports nutrients and metabolites contains more than 90% of water, and urine excreting metabolites contains about 95% of moisture. It can be seen that if there is insufficient or lack of water in the body, metabolism cannot be performed normally.
Adequate drinking water in winter is beneficial to the health of leeches. When infectious disease or feed poisoning occurs in mink, anorexia or food refusal occurs. It is beneficial to increase the number of water supply, excrete toxic products to the body, and promote healthy recovery. For example, excessive salt or poisoning, and increased drinking water can quickly restore health. According to reports, adult mink added 1.2 to 1.5 grams of salt per kilogram of body weight, and water was supplied three times a day. The water intake of leeches increased, no other abnormalities occurred; 3 grams of salt was added per kilogram of body weight and water was supplied once a day. , there is obvious poisoning phenomenon; adding 1.2 to 2.0 grams of salt per kilogram of body weight, lack of drinking water in the cage, the death toll of 20% on the first day; add 2.7 grams of salt per kilogram of body weight, lack of drinking water in the cage 80% of the deaths were in the water; in the cages with adequate water supply, even 4.5 grams of salt was added per kilogram of body weight, and the leeches were not harmed by excessive salt. Therefore, providing sufficient drinking water is beneficial to the health care of leeches and is of great significance to the health of leeches.
From this point of view, the market must ensure that there are sufficient drinking water for the otters throughout the year, and it is not possible to replace drinking water with dilute feeds during the cold winter season. Although otters drink less water in winter, they should be fed clean, warm water at least once a day. To ensure the physiological needs of water phlegm to water
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