1. Evaluate the pig's diet. When formulating a boar's diet, it is important to consider its special needs for the protein. Because the species of boar can reach 200-400 ml in one ejaculation, the excellent individuals can reach 800-900 ml. More than any other family rich. Protein is the main component of dry matter in semen. Providing a certain amount of full-price quality protein in the diet can greatly increase the amount of boar ejaculation, improve semen quality, and prolong sperm life. Therefore, the need for protein for boars must be ensured. The crude protein content of the boar diet is about 15%. At the same time, each breeding time of the boar is about 10-15 minutes, which is longer than other livestock and also requires more physical energy. During busy season or when used frequently, increase the fishmeal by 1%-2% in boar rations, or feed 2-5 shelled eggs per head per day, or add 5% cooked minced meat. The piglet's fetal clothing is very effective in improving ejaculation and semen quality. Energy feed for breeding boars should not be too high, generally around 12%. Otherwise, it is easy to cause boar fat, loss of libido, reluctance to breed, or even cause testicular steatosis, the sperm injection is not sound, can not be fetus. Of course, due to a single feed, over-breeding, thin boar, not only a small amount of ejaculation, poor quality, but also affect the sow by shares. Calcium and phosphorus also have a great influence on the semen quality of boars. In the absence of sperm, the development of sperm in the semen and the lack of vitality of the sperm increase. The diet of boars should contain about 0.75% calcium, and the normal ratio of calcium and phosphorus should be 1:1 or 2:1. Vitamins are an indispensable nutrient for boars. In the absence of Va, the testicles will swell and shrink, and sperm will not be produced; when the levels of Vc and Ve are insufficient, the quality of semen will decline. In short, to maintain a healthy and healthy boar and a strong sex drive, it is necessary to obtain necessary and comprehensive nutrients from the diet. 2. Feeding: Practice has shown that with good quality diets, good feeding methods must be used to achieve the desired results. The feed volume of the feed boar should be as small as possible. The proportion of concentrate is slightly more than that of other pigs. The coarse material must be crushed and finely ground. The green feed is preferably fed after being beaten. In this way, the nutrition of the diet is comprehensive, the breeding ability can be improved, and the boar of the breeding boar can be prevented from expanding. Feeding the boar should be limited to feeding and controlling the growth. In particular, adult boars should generally be controlled at a weight of about 150-200 kg. The feed volume of boars in the mouth is slightly different due to factors such as adult boars, young boars and different seasons. An adult boar 150-200 kg in weight should supply 2.5-3 kg of compound feed and 2.5 kg of green feed per day; a young boar with a weight of about 90 kg should supply 2-2.5 kg of compound feed per day. About kilograms. Feed 1 time in the morning, midnight and evening, with regular ration. In cold and hot summer seasons, when the feed intake of boars is reduced, while keeping cold and keeping warm and cooling off during the summer, the nutrition level of the feed is appropriately increased to increase appetite. For the feed type of boar species, slightly fermented with wet mix (feedstock, water ratio of 1:1, or beating green feed) is appropriate, better than dry powder, good palatability, not pigs, no bottom left , and easy to digest and absorb. Boars should be provided with plenty of fresh, clean drinking water, and duck-billed drinking fountains should be used for drinking freely. The movement of boars should not be neglected. Moderate exercise can indeed promote appetite, enhance physical fitness, and improve semen quality. The method of exercise can be combined with sweeping excrement to drive the movement in the column every day, and it can also be set in the sports field outside the column to let it move freely.
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