Selection, feeding and management of excellent sows

Selection and Feeding Management Techniques of Sows

Breed selection: Gilts generally take Landrace and Yorkshire as main female parents, and have excellent breed characteristics, requiring good body shape, sound physique, symmetry, straight back line, healthy and tidy limbs, good development of external reproductive organs, neat and uniform nipple arrangement, and more than 6 pairs of effective nipples.

Density appropriate: in rural areas, generally implement sow, birth and lactation single pen with the house feeding, each sow should maintain a pen area of 12 square meters-15 square meters. If the sows are housed by stages, the gilts are generally 4 - 6 heads for a column, and each head occupies an area of about 2 square meters. High density will affect the growth and development of gilts, resulting in tail biting.

Limited feeding: gilts start from 60 kg body weight, use gilt feed and implement limited feeding to ensure balanced supply of protein, va, vd and ve, and generally feed 1.5 kg-1.8 kg per day. At 80 kg body weight, the daily feeding amount is 1.6 kg-2 kg. Conditional farm households can also increase high-quality green feed.

Adequate drinking water: The amount of drinking water is generally 3 - 5 times the amount of dry powder feed intake. Insufficient drinking water will limit the feed intake and reduce the production performance of gilts. Generally, in addition to the pigsty (house) installed from the ground height of 0.6 cm-0.75 cm, downward angle of 45° automatic drinking water, but also in the trough to add clean drinking water to ensure supply.

Training and management: After the gilts are housed, the training and management shall be strengthened. In addition to training them to feed and defecate, they shall also touch the gilts frequently when sweeping the pens and feeding, so as to achieve the friendly relationship between pigs and people and facilitate future management.

Deworming: At 7 months of age, gilts were injected subcutaneously with avermectin at 0.3 mg/kg to drive off internal parasites and sprayed with 2% trichlorfon to drive off external parasites once. swine fever, foot-and-mouth disease, parvovirus, pseudorabies gene deletion vaccine and highly pathogenic swine blue ear disease vaccine were injected once every 7 - 10 days.

Timely breeding: when gilts reach 8 months of age and weigh about 100 kg, and after 2 - 3 estrus, they can breed. Estrus observation was conducted before feeding in the morning and after feeding in the afternoon every day. When crevice of vulva appeared, mucous membrane color changed from bright red to lacquer red, mucus pulled continuously or pressed sow waist, ears stood upright and motionless, it was the best breeding time. It should be bred twice continuously with an interval of 8 hours to 12 hours.

Establishment of archives: ear number, epidemic prevention, medication, estrus and breeding of each gilt were registered in detail to guide production.

The above contents and suggestions are for reference only.