Standard Operating Procedures for Nursery Pig Rearing and Management in a 30,000-Head Pig Farm

Standard Operating Procedures for Nursery Pig Rearing and Management in a 30,000-Head Pig Farm (Trial)

I. Preparation before pig entry: 1. Pen preparation: (1) Pen cleaning: The stockperson shall complete thorough cleaning on the same day the pigs are moved out. If specific disinfectants need to be added during cleaning, the technician shall report to the branch farm manager for a decision. (2) Pen maintenance: After completing pen cleaning, the stockperson shall carefully inspect the facilities inside the barn (including water, electricity, cast iron slats, etc.). If any damage is found, report it promptly to the branch farm manager and assist the maintenance personnel. Only after the branch farm manager has inspected and accepted the work may disinfection proceed. (3) Pen disinfection: After the cleaned pens have dried and been inspected, disinfect immediately once with a 2%-3% caustic soda solution. 1-2 hours after caustic soda disinfection, rinse the alkaline solution off with clean water, allow to dry, and leave the barn empty for 3-4 days. 24 hours before pig entry, carry out a second disinfection as required by the technician, and leave to dry until needed. Disinfection must be comprehensive, thorough, and leave no dead corners. It shall be performed by the technician, with management personnel and stockpersons assisting. Only after the branch farm manager has inspected and approved may pigs be moved in; otherwise, repeat the operation once. 2. Production tool preparation: Prepare all necessary tools such as brooms and manure shovels, clean them thoroughly, soak them in the designated disinfectant, and leave them to dry until needed. 3. Disinfection pool preparation: The disinfection pool at the barn entrance shall have its disinfectant replaced as required 0.5-1 hour after pig-entry disinfection is completed, and the disinfectant shall be replaced twice daily (once in the morning and once in the afternoon). 4. Feed preparation: Report the 311A and 311 plans. During the transition period, use 311A well to gradually change the feed for a smooth transition.

II. Requirements during pig entry: (1) During group transfer, be as careful and cautious as possible, and strictly avoid violent hitting to prevent human-caused injury to pigs. After entering the barn, reasonably control the rearing density; generally each piglet should occupy 0.3-0.5 sq m of pen floor area. Reasonably group the pigs according to individual size, temperament, breed, and sex to ensure uniform growth of pigs in the same pen. (2) During group transfer, strictly observe hygiene and epidemic prevention regulations. In particular, after the pigs enter the barn, disinfection with pigs present shall be carried out. Within 1 hour after group transfer is completed, vehicles, tools, roads, etc. shall be disinfected.

III. After pigs enter the barn, environmental requirements and control inside the barn: 1. Hygiene: After pig entry, promptly train the pigs in the three-point positioning of defecation, eating, and sleeping. Keep the pig pens dry and clean, and carry out frequent inspection and frequent cleaning. 2. Temperature control: The temperature inside the barn shall be controlled according to the weaning time of the pigs entering. Generally, during the first week after weaning, the temperature of the piglet barn should be controlled at around 25°C, and afterward, as the piglets' age increases, it can be lowered to 20-22°C. The minimum temperature shall not be lower than 19°C. If piglets are found huddling together, this indicates the temperature is too low; check the thermometer and promptly adjust the height of the colored strip cloth. 3. Humidity: The relative humidity inside the barn should be maintained at 65-75%. When the pens are dry, minimize pen flushing, and at least ensure that 60% of the area in the pens is dry. If the temperature is too high, promptly adjust it through measures such as changing ventilation conditions.

IV. Herd rearing and management after pigs enter the barn: 1. Feeding method: (1) Feed transition: For piglets entering the nursery barn, the diet shall transition from creep feed to piglet feed, and the feeding frequency shall transition from 6 times per day to 4 times per day. For 1—3 days after weaning, feed only creep feed; on the 4th day, feed 5 parts creep feed plus 1 part piglet feed; on the 5th day, feed 4 parts creep feed plus 2 parts piglet feed; on the 6th day, feed 3 parts creep feed plus 3 parts piglet feed, until the transition to piglet feed is complete. For piglets with poor growth and development, the feed transition time shall be delayed. (2) Daily feed amount and feeding frequency: On days 1-3, appropriately restrict feed, feeding 6 times per day, to a degree of 70-80% satiety, generally based on just finishing eating within 30 minutes of feeding. Starting on the 4th day, reduce the daily feeding frequency to 4 times, and provide free access to feed until the pigs are moved out. 2. Prevent piglets from developing post-weaning stress syndrome caused by factors such as weaning. (1) During the first week after pig entry, feed anti-stress agents: such as Baigushu, vitamin C, mineral salt solution, and medications for preventing respiratory diseases, etc. (2) Keep the pig barn environment relatively stable (including temperature, humidity, etc.). (3) Add anti-diarrhea medications to feed or drinking water. The technician shall designate the medication and concentration and supervise the operation. (4) Routinely observe the herd carefully (especially newly penned piglets). Promptly pick out sick and weak pigs, feed them in separate pens, and provide special care, treatment, and medication so the pigs can recover. 3. Disinfection: In principle, the nursery barn shall be disinfected with pigs present once per week, roads shall be disinfected every other day, and the footbath disinfection pool and disinfection buckets shall have their disinfectant replaced daily. The disinfectant shall be determined by the technician according to specific circumstances. The operation process shall be supervised by the branch farm manager. 4. Immunization: Strictly follow the immunization program formulated by the joint-stock company. Do not arbitrarily change immunization dates or refuse to implement the immunization program.