Weaning
Weaning is the key to raising good nursery pigs. In the stage of nursing piglets, comprehensive measures should be taken to prepare for good weaning. At the time of weaning, do as much as possible to feed, feeding system and living environment of “two maintenance, three transitions”, that is, to maintain the management in the original pens and maintain the original feed feeding, and gradually do a good job in the transition of feed, feeding system and living environment; and to maintain the original feed and feeding system and living environment of the transition.
Grouping and coaching
When weaning piglets, it is best to raise them in groups according to their size, generally 10-20 heads per pen is appropriate to ensure that each pig has a suitable pen area, the density should not be too high. Too high density will lead to a poor environment for pigs to live in groups, increase fighting, and also more prone to diseases.
The sick pig weak pig, raised in the sick pig pen, strengthen the care. Sick pigsties should be set up if available to facilitate care and control the horizontal spread of disease.
After the transfer of the group, the staff should immediately start the “three-point positioning” of the pigs, so that the pigs from entering the new environment to develop a fixed place to defecate, feeding and resting habits.
Feeding management
It is best to implement an all-in-all-out system in the nursery barn. There are always slow-growing pigs or even sick pigs in the barn, and these pigs often carry pathogens, which can easily spread the disease to the new piglets. All-in-all-out can effectively cut off the vertical transmission of diseases.
Most of the disease occurs in the process of mixing after weaning, the sick pigs should be isolated to the sick pen or sick barn in time to strengthen the care, which can effectively control the horizontal spread of the disease, and is also conducive to the recovery of the sick pigs.
Reduce the stress of healthy pigs through feed or drinking water to enhance the resistance to the disease. Sick pigs with severe infections will be culled firmly. In addition to nutritional factors, the most serious stress in nursery pigs is the change of temperature. For piglets weaned at 4 weeks of age, the optimal temperature is 23℃, and the temperature of the barn is 12℃～20℃, and the temperature difference between day and night should not be more than 2℃.
Do a good job of pig farm insulation
Infrared lamps, electric heat insulation board and hot air furnace are common heating facilities. Traditional pig farms can also use insulation boxes and thick bedding, or padded sacks and boards for insulation. It can be reduced by 2℃ per week.
Under normal circumstances, piglets scattered lying down to sleep, around the activities of the temperature is appropriate, if the piglets crowded lying down together, very little activity means that the temperature is too low. Cold not only makes the growth of piglets slow, but also leads to the decline of their resistance to disease.
While keeping warm, attention must be paid to the ventilation of the nursery. Otherwise, the special environment of the nursery can easily cause problems such as dirty air, serious excess of harmful gases, and elevated concentration of pathogenic microorganisms in the air, leading to piglets' illnesses. Ensuring air quality is the key to controlling respiratory diseases.
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