Bull breeding and management

According to the nutritional needs of the species of bulls, in the feed arrangement, it should be a full price of nutrition, a variety of coordination, palatable, easy to digest, fine, coarse, green feed to be properly matched. Concentrates should focus on proteins with high biological value, and the proportion of concentrates should be approximately 40% of the total nutritional value, and focus on the following two aspects.
1, feed mix: juicy feed and roughage can not be excessive, long-term feeding too much, will increase the volume of the digestive organs of bulls, forming a "grass-bellied" and affect the efficiency of species. Feeds with high carbohydrate content (such as corn) should be fed less, otherwise it is easy to cause the calf of the breeder to lose weight and reduce the adverse consequences of breeding ability. Bean cakes and other protein-rich concentrates are a good feed for the breeding bulls, but they are physiologically acidic feeds, and they feed a lot of organic acids in the body, which is detrimental to the formation of sperm. Silage is a physiological alkaline feed, but the silage itself contains a lot of organic acids, too much feeding, the same harmful. Bone meal, salt, and other minerals have a direct bearing on the health of bulls and semen quality, especially bone meal (or other feed containing calcium and phosphorus) must be guaranteed. Salt is also important for stimulating digestive function, increasing appetite and normal metabolism, but the amount of feed should not be too much, otherwise there is some degree of inhibition on the sexual function of the bull.
When the concentrate or multi-meal feed is overdose, resulting in decreased semen quality, an appropriate amount of high-quality hay should be fed on the basis of reducing the amount of concentrate or multi-feed, and after adjustment, the quality of semen can be significantly improved. When the concentrate is too simple and affects the quality of semen, it must be added. The best feed for animal protein additives is eggs, fish meal and milk. This kind of animal feed is indispensable for frequent picking. Bulls fed a large amount of hay and other fine feeds for a long time, resulting in "grass-bellied", it is difficult to correct the feed by adjusting the feed, but the early discovery of improper feeding, as well as the possibility of adjustment and correction, this problem, often It happened during the nurturing of the young bull.
2, the amount of each type of feed given: Concentrated feed weight per 100 kg given 0.4-0.6 kg. It is best not to exceed 8 kilograms for the amount of a continuation of a bull bull, and it is generally 5-6 kilograms, but the quality requirement of the concentrate should be excellent. The amount of green roughage fed can range from 1 to 1.5 kg of hay per 100 kg of body weight, 0.6 to 0.8 kg of silage, and 0.8 to 1.0 kg of carrots. The total amount of green roughage is about 10-12 kg. In the summer, he will feed mowing grass (medium quality, mainly grasses) and he can feed 2-3 kilograms per 100 kilograms of body weight. In addition, each bull can feed 0.4-0.5 kilograms of eggs each day, or 2-3 kilograms of milk, or 100-150 grams of fishmeal, 100-150 grams of bone meal per day, and 70-80 grams of salt.
Bulls should ensure adequate drinking water, before and after mating or sperm extraction, do not drink water within half an hour before and after exercise, so as not to affect the health of the bull, but do not drink dirty sewage, hail water.

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