For lean gilts, if they choose to stay, they should be transferred from the finishing pigs to the gilts before 60 kg. It is not possible to keep raising pigs until they are ready for breeding. If you purchase gilts from the outside, you also need to buy before 60 kg. If you purchase too late and the sow is overweight, it is likely that the sow has been reared in the form of fattening pigs, which is detrimental to breeding. On the other hand, the gilts purchased were too late and did not have enough time to adapt to their own farms, which may cause reproductive failure.
From 60 kg into the gilt rearing period, rearing management is different from finishing pigs. The daily growth rate can be maintained at about 500-600 grams. This requires proper control of the amount of feed for the gilt. It is recommended to change to 2 meals per day, preferably wet feed. The feed for gilts is best prepared separately. The level of feed protein, amino acids, cellulose, vitamins, and minerals is slightly higher than that for finishing pigs. This is conducive to breeding gilts with high fertility and robustness.
When the gilts reached 7 months of age and the body weight reached 110 kg, observe the sow's puberty. Requires breeding in the second estrus. Before the breeding, the amount of feed can be increased to promote multiple ovulation and prolific breeding.
To purchase gilts from the outside, you must buy them from farms with good disease prevention and high health standards. Newly purchased gilts should be kept in isolation for a period of time (usually 4 to 6 weeks), and they cannot be immediately mixed with the pigs in the pig farm, and are prone to outbreaks of infectious diseases. During isolation observation, do a good job of various vaccination and observe the health status of the gilt. If everything is normal, we must begin to contact the pigs in this field to allow gilts to adapt to the microbiological environment and increase resistance. This contact should be gradual. Allows gilts to contact the health sow. Increased exposure to old sows in this field allows gilts to have strong immunity and ensure successful reproduction.
Management should increase the area of ​​activity of the gilts, maintain the hygiene of the sheds, train the gilts' good hygiene habits, and do the necessary immunization and deworming.
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