One week after breeding
One week after mating is the critical period for egg fertilization and fertilized egg splitting. If the sow is over-saturated at this time, part of the fertilized egg will die, which will reduce the rate of conception. Therefore, sows should not feed too much within one week after mating, and the daily feeding amount should be 1.5 kg to 1.8 kg.
Week after childbirth
For first-born piglets, feeding and management one week after delivery is very important, because many casualty accidents during the pig-raising process occur at this stage, such as frozen death, frostbite, crushed death, and death, while preventing the sows from lactation Insufficiency leads to a low survival rate of piglets.
In order to reduce the piglet's death and injury rate during the week, the following tasks should be done: proper production and keeping warm and cold. Let the newborn pigs eat colostrum in time to enhance disease resistance. Fixing the teat is an important measure to reduce the death of newborn piglets and increase the uniformity of the piglet population.
One week after weaning
This is the most severe period of stress in weaned piglets, especially when the food is changed from liquid milk to solid feed. The maternal antibody supply ceases to have a very adverse effect on the piglets and is a cause of its disease. The provision of comfortable environmental conditions and quality feed for weaned piglets is a guarantee of successful weaning.
One week after illness
Animals, like humans, cannot completely prevent illness, but they must strengthen health care after illness. Nutritional conditioning is most important one week after the illness, such as providing quality protein (amino acids), adequate vitamins and minerals. Through nutrition conditioning to promote the recovery and normal growth of sick pigs.
Plastic additives, also known as plastic additives, are compounds that must be added to polymers (synthetic resins) to improve their processing properties or to improve the properties of the resin itself. For example, in order to reduce the molding temperature of PVC resin, to make the product soft and added plasticizer; Another example is to add foaming agent in order to prepare light weight, anti - vibration, heat insulation, sound insulation foam plastics; The thermal decomposition temperature of some plastics is very close to the molding temperature, and the molding cannot be done without adding heat stabilizer. Therefore, the plastic assistant agent occupies a particularly important position in the plastic forming process. A class of auxiliary agents for plastic molding products, including plasticizer, heat stabilizer, antioxidant, light stabilizer, flame retardant, foaming agent, antistatic agent, mildew agent, colorant and whitening agent (see pigment), filler, coupling agent, lubricant, mold release agent and so on. Colorants, brighteners and fillers are not special plastics chemicals, but the general use of materials.
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