In order to increase the sexual desire of male boars, ensure the quality of semen quality and breeding efficiency, and breed more and better piglets, it is necessary to conduct scientific feeding and management of male boars. The main measures are as follows:
1. A reasonable mix of diets to feed high-nutrition rations for boars. Appropriate rations can be used to keep boars in good condition, with strong physique, energy, strong libido, good semen quality, and high mating performance. Excessively high levels of nutrients may cause boar fat to accumulate too much and become too obese. Low levels of nutrients will cause loss of body fat and protein in boars, negative balance of carbon and nitrogen, and excessive weight loss. Therefore, the boar mating period feed should not be lower than 12.97 MJ per kilogram of digestion, and crude protein should be 14%-15%. The boar weighing about 200 kg will supply 2.4 kg of air-dried feed on the breeding day, containing digestive energy of 30.03 MJ, and digestible crude protein of 265 g. The ratio of calcium and phosphorus in boar diet should be 1.25:1. In selenium-deficient areas, attention should be paid to the supplementation of selenium and the supply of vitamins. During the preparation and breeding period of boar breeding, vitamin A, vitamin D, and vitamin E should be supplied to the feed. Niacin and pantothenic acid are also indispensable vitamins for boars.
The reference formula for the boar's diet is as follows: 1 breeding season: fish meal 1% to 2%, soybean meal 16% to 20%, corn 50% to 55%, bran 15% to 20%, grass powder 8% to 10% 1% to 1.5% of bone meal, 0.5% of salt, 0.02% of multi-dimensional elements, and 0.5% of trace elements.
2 Leisure period: 15% to 16% of soybean meal, 50% to 55% of corn, 15% to 20% of bran, 10% to 15% of grass powder, 10% to 1.5% of bone meal, 0.5% of salt, and 0.01% of multidimensional Trace elements 0.5%.
2. Choose the right breeding method According to the mating task of the breeding boar within one year, it is divided into two feeding methods. 1 Keeping feeding methods consistently: sows are allowed to carry out the year-round delivery, and boars need to bear the task of mating all year long. Therefore, the required level of nutrition for boars must be maintained in a balanced manner within one year. 2 Breeding methods for breeding seasons: The sows should perform seasonal delivery. One month before the start of the mating season, the boar should gradually increase its nutritional level, maintain a high level of nutrition during the mating season, and gradually reduce the nutritional level after the mating season.
3. Feed and Feeding Technology Feeding boars should be regularly quantified, each time do not feed too full, the volume should not be too large, should be based on concentrates, should use raw dry or wet material, plus the amount of green and more Juice feed, provide enough clean drinking water.
4. Appropriate exercise moderate exercise can promote metabolism, enhance boar physique, improve sperm motility, conditional field home, can drive away, once every morning and afternoon, once 1.5 hours to 2 hours, travel about 2 kilometers, You can also exercise freely. When you build a pig house, you can set up a sports field so that boars can exercise and bathe outdoors.
5. The most suitable age for first-in-class mating is 7 months to 8 months and weight is about 75 kg for small early maturing varieties, and suitable for large and medium-sized varieties is 9 months to 10 months and 100 kg. If the breeding is too early, it will affect the growth and development of the boar itself, shorten the useful life, and reduce breeding performance of the mating sow.
6. Appropriate breeding times Adult boars over 2 years of age are suitable once a day and twice a day if necessary, but not every day. Every day of the week, young boars are bred every 2 days to 3 days. Under the present circumstances, a boar can bear the task of breeding 20 to 30 sows.
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