The management method of raising young mink in breeding period

1. Characteristics of nutritional requirements of young minks the young minks were weaned from 40 to 50 days old and fed on feed, and the breeding period was at the end of September, which was the stage of young mink, and then turned to the period of preparing for mating or changing hair. During the breeding period, due to the accumulation of nutrients and energy in the body in a dynamic balance, the number of tissue cells increased rapidly, and the young marten grew and developed rapidly, especially during the 40-80-day-old period.

At this time, the metabolism of young mink is very exuberant, the effect of assimilation is greater than that of alienation, and the protein metabolism is in positive balance, that is, the total amount of nitrogen intake is greater than the total amount of nitrogen excreted. Therefore, the need for various nutrients, especially proteins, minerals and vitamins, is extremely urgent. Second, the feeding of young minks according to the nutritional needs of young minks, the dietary energy standard is 836.8 Mel 1171.52 kilojoules, animal feed should account for about 75%, and it is composed of fish, livestock and poultry viscera and by-products, fish meal, pellet feed, etc., cereal feed can account for 20% Mel 23%, vegetables can account for 1% Mui 2% or not, and vitamins and trace element additives should be added. Each animal was fed 0.5ml 0.75g per day, or supplemented with cod liver oil 0.5ml 1g, yeast 4Mel 5g, bone meal 0.5ml 1g, vitamin E 2.5mg, and oxytetracycline 0.5 g. The breeding period is in the depths of summer, so it is necessary to strictly prevent minks from various diseases caused by eating metamorphic feed. Therefore, in addition to good feed quality from the aspects of procurement, transportation, storage and processing, there must be a reasonable feeding system. At this time, it is generally fed three times a day, and the interval between morning and evening feeding should be as long as possible. After each feeding, it is guaranteed to finish the feed within 1 hour. If you can not finish it, you should withdraw from the bowl as soon as possible. This is an effective measure to reduce the incidence of disease and mortality during the breeding period. During this period, the physical condition of the female mink generally decreased after pregnancy and lactation, and some of the female mink had reached the state of wasting and lactation. Therefore, 10 mi 20 days after weaning should still be reared according to the standard of lactation diet. For female minks suffering from lactation, 0.4% Mel 0.5% salt should be added to the feed, and liver, yeast, iron and copper preparation, vitamin B6, vitamin B12 and folic acid should be added to make it recover as soon as possible. Otherwise, the mortality rate of female mink will increase in summer, and the reproduction of the following year will also be adversely affected. 3. Management of young minks (1) Breastfeeding minks should be separated and grouped in time 45 days after birth. Early or delayed weaning is not beneficial to both female and young minks. Before weaning, you should make preparations for the construction, maintenance, cleaning, disinfection and bedding of the cage. The method of weaning is to wean the whole litter of minks at a time. Three same-sex minks are reared in the same cage every 2mur. after 10 days, the minks are reared in a single cage. The quality of feeding and management of young mink can be judged by weighing regularly. (2) during the breeding period of hygiene and epidemic prevention, every effort should be made to prevent minks from eating deteriorated feed, feed processing tools and eating utensils should be scrubbed and disinfected regularly, and hygiene in feed rooms and mink sheds should be done well. We should try our best to eliminate ants, flies and mice to prevent gastroenteritis, dysentery, adipose tissue inflammation and poisoning. Timely supply of adequate drinking water, timely wake up minks sleeping in the sun, strengthen ventilation and prevent heatstroke. (3) vaccination against susceptible infectious diseases such as canine distemper and viral enteritis must be vaccinated with a single vaccine and must not take any chances.