Five methods for prevention and treatment of metamorphosis in sows
The phenomenon of low litter birth rate of sows is often encountered in the production of 227 pregnant pigs. in addition to the low fertilization rate, the early death of embryos caused by fertilized eggs in the process of development and absorption by sows (commonly known as metamorphosis) is also an important reason. This problem can be solved by the following methods.
The main results are as follows: 1. Strengthen the feeding and management of empty sows, increase protein feed and energy feed, and add minerals and vitamins at the same time to make them enter the best state of mating 3-14 days before breeding; for the poor fat sows, nutrition can be strengthened for a long period of time before mating, so that it can restore fat and physical strength as much as possible, so as to facilitate mating, conception, preservation and improve the litter rate.
2. The mating time of timely mating sows is the best at 22 ~ 24 hours after the beginning of oestrus. In terms of estrus symptoms, sows change from extreme excitement to quieter, white filamentous mucus flows out of vagina, hand pressure sows back and waist sows stand still, the mating time is the best, so the mortality rate of embryos is low and the birth rate is high.
3. Regulation of endocrine in 7 days after mating, each sow was injected with progesterone 30 mg, which could effectively reduce embryo death and prevent sows from turning fetus.
4. To improve the feed quality of sows during pregnancy, the feed quality should be good, and the sows should be strictly prevented from being fed with mildew, pollution or frozen feed, otherwise food or pesticide poisoning will occur easily, the mild ones will cause embryo poisoning and death, and the serious ones will affect the life safety of the sows.
5. Control the ambient temperature of sows in the first week of pregnancy, when the ambient temperature is as high as 32-35 ℃ in a short time (24 hours), embryo death increases; similarly, embryo death can also be caused by breeding with heated boars, so it is best to control the ambient temperature between 15-25 ℃.
In addition, it is necessary to prevent and cure a series of reproductive system diseases in time.
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Treatment of joint sprain and rheumatism in pigs
Due to the action of external force, the joint is twisted, resulting in incomplete or complete rupture of the joint capsule and the corresponding joint lateral ligament. Symptoms: sudden claudication or walking with three limbs, the affected part is warm, swollen and painful, and the pain is more obvious during exercise. Treatment: 2 parts of ① vinegar, 1 part of quicklime, mix well, once or twice a day. ② leek 50-100g plus soju 100-50g, mash external application. 75 grams of ③ frankincense, 75 grams of myrrh, 100 grams of gardenia, 25 grams of safflower, mix well with vinegar, wrap the affected part
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Rearing adult fish species
To raise fish in the rice field is to put the winter fillet or large size fish into the rice field to cultivate the big fish. Adult fish, also known as edible fish or commercial fish, can be eaten or sold as a commodity. The species of adult fish raised in rice fields are mainly herbivorous and omnivorous fish supplemented by filter-feeding fish and mixed culture of many kinds of fish. Herbivorous fish include grass carp and carp, omnivorous fish include carp and Pengze crucian carp, and filter-feeding fish include silver carp and bighead carp. In addition, fish suitable for raising in rice fields include Loach, Monopterus Albus, Tilapia, mullet and catfish. These fish
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