2, timely breeding: weaning pigs 35 days of age can promote early estrous sows, early mating, shorten the empty period, the relative savings of feed.
3. Castrated in time: 30-day-old boars and 40-day-old gilts were visibly cast and weighed about 15% more than the customary 60-day-old grazing, which shortened the finishing period by about 20 days and saved feed.
4, timely deworming: pigs after the insects have strong appetite, eat much, grow faster, daily gain can increase 20-30%, save more than 10% of feed.
5, the implementation of captive: change to free-range breeding, captive pig movement is small, consume less energy, easy to grow meat, can save feed 8-10%.
6, the implementation of protection and feeding: summer in the pighouse take shade, summer cooling, each weight increase of 1 kg can save 0.6 kg of refined material. Winter and spring seasons use the greenhouse to feed, provide suitable environmental conditions for the pig's growth and development, can avoid feed waste. According to the test, the temperature in the spring greenhouse is 6.36°C at 6 o'clock in the spring and 12°C at 14 o'clock in the spring, and 3.11°C and 9.37°C in the control group, and 6.08 kilograms of grain per head in the test group. According to another data, padding hay in the winter barn can reduce the energy consumption of the pigs. When the temperature is 3°C, the matgrass gains 90g per day compared to the non-padding, and every kilogram of additional gross weight saves 0.6kg of feed.
7. Change the cooked feed to raw feed: Using raw feed to feed pigs not only facilitates feeding, saves time and effort, but also has good palatability, which is conducive to preservation of nutrients and improved feed utilization.
8. Feeding compound feed: Fine, coarse and green feeds should be applied in a reasonable and proportionate manner in phases. Before the pigs weigh 50-60 kg, they should mainly use high-energy, high-protein concentrates; in the range of 50-60 kg to the slaughter, they should be lowered appropriately. The energy and protein levels in concentrates reduce the input of concentrates and increase the crude forage.
9, the use of feed additives: In the pig feed, appropriate to add some minerals, trace elements and a variety of vitamins, can promote growth, save feed.
10. Timely slaughter: When the weight of the hog is 20-90 kg, the daily weight gain rises linearly. After 100 kg, the growth rate is slow, and the daily weight gain gradually decreases. Therefore, it is better to raise the slaughter to about 100 kg.
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