The appearance is tan, and the cork is red-brown at the flaking; there are intermittent stripes on the branches, nodules are enlarged, and the shape is like a bead. Most of the hard and delicate roots and fibrous roots are born, and some surfaces are smooth and smooth, such as stalks. It is commonly known as "crossing the river branches" or "crossing bridges"; there are brown scales on the upper part, and there are residual stems or petioles that have not been cleaned at the top. The quality is firm and hard, the section is irregular, the skin is dark brown, the wood is golden, the rays are cracked, the central pith is red and yellow, and occasionally hollow. Odorless, very bitter taste, chewing saliva can be dyed red and yellow. It is better to use fat, beaded, solid, red-yellow, no residual stems and fibrous roots.
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The temperature of the newborn piglet lying in the lying area is required to be 35-37°C. After that, it is reduced by 2-3°C every week and the temperature in the activity area is 20-24°C.
On the second day of the piglet's birth, 100 to 150 mg of iron was injected into each muscle of the head using high-quality iron. According to the actual situation of the field, the long-acting oxytetracycline (0.5 ml/head) can be injected 2 to 3 days before the beginning of the diarrhea of ​​the pigs, and injected once at intervals of 5 to 7 days. 1 ml/head is injected 1 day before weaning to prevent diarrhea.
The nutritional requirement for breast milk at 3 weeks of age is 97% for piglets and 37% for 4 weeks of age. Early training of piglets to start eating can alleviate the effects of weaning stress. Piglets should start to be tempted at 3 to 5 days of age. Sprinkle a small amount of high quality chute material in the chute. The chute must be cleaned and disinfected twice a day.
2. In the first 2 weeks after weaning, the first 2 weeks after weaning must use high-energy, high-quality protein, easy digestion, good palatability, and comprehensive nutrition.
Because weaned piglets suddenly change their drinking milk to feed on solid feeds, they will cause great stress. At this time, attention should be paid to the feed form, and wet mixes (2 parts of water, 1 part of feed) can be used. High-quality can be added to the feed. Piglets with milk powder, glucose, multivitamins, etc., and small meals, fed 5 to 6 times a day, can relieve weaning stress, increase feed intake of the piglets, to obtain greater weight gain.
3, nursery homes just weaned piglets generally require a local temperature of 30 °C, then down every week after 3 ~ 4 °C until it fell to 22 ~ 24 °C. Insulation of weaned piglets can reduce cold stress, thereby reducing diarrhea after weaning and other diseases caused by cold. In the heat preservation, heat sources that do not affect the environment of the nursery are to be used as far as possible, such as infrared heat preservation lamps, electric heating plates, and plumbing and other heat preservation equipment. Try not to use coal or other heat sources that have a large impact on air quality.
Ensure that each nursery has 0.3 to 0.4 square meters of lying space.
Strengthen ventilation, reduce the concentration of harmful gases such as ammonia, carbon dioxide, etc. to reduce the stimulation of the respiratory tract of piglets, thereby reducing the occurrence of respiratory diseases.
Diligently excrement, minimize flushing frequency, indoor air humidity control in 60% to 70%; excessive humidity caused by piglets diarrhea, skin disease; humidity is too small will cause the increase in house dust induced respiratory disease.
4. Timely elimination of residual pigs Pigs have a slow growth. Even if they survive, it will take longer and more feed to feed them, which is not worth the candle.
Defective pigs grow slowly, most of them are diseased pigs. The more detained pigs, the more pathogenic microorganisms in the nursery are. The more susceptible the healthy pigs are to infection, the more time the breeder needs to occupy the breeding and treatment process. It was found that the remaining pigs were eliminated in time.
5. In the first week of drug care and deworming piglet care, add 60 grams of Zhiyuan in each ton of water, 500 grams of high-quality multivitamins, 1 kg of glucose, or 300 grams of “French†(main component of florfenicol). 500 grams of multivitamins and 1 kilogram of glucose can effectively prevent the occurrence of respiratory diseases.
During the course of vaccination, adding high-quality multivitamins to the diet can relieve stress to a certain extent.
About 3 weeks after weaning, the parasites in the body and extermination should be disinfected, and the highly effective anthelmintic drugs such as “Kenwei Extermination†(main component is ivermectin) and “Penticide†(main component is doramectin) can be selected.
6. Regulatory immunization procedures Vaccination stress is not only manifested in the injection, but also can significantly reduce the feed intake of piglets, affect the development of the immune system, excessive vaccine injection may even cause immunosuppression, so in the nursery should try to Reduce vaccine injections.
7. After the pigs in the strict disinfection column are turned out, spray all the utensils, columns, and equipment surfaces and ensure that they are fully infiltrated and soaked for a certain period of time; use a high-pressure cleaner to thoroughly rinse the ground, high beds, drinking fountains, food troughs, etc.; After all appliances are dried, use high-efficiency, broad-spectrum, low irritant disinfectant to fully spray the empty bar. After 2 to 3 days, disinfect all places with a flame once. Leave it empty for 1 week and then transfer to weaned piglets.
8. Divide the area According to the principle of “full-in, full-outâ€, a nursery home can be divided into several regions. Each region is a separate space. Within one region, piglets that are weaned in the same week are transferred to piglets in this region. After the complete transfer, it will be completely sterilized and vacated for another week before entering another group of piglets.
Nursery Pig Management
1. Feeding pigletlets After they are born, make sure that each head can eat enough colostrum to improve immunity, increase resistance, and reduce disease.