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(2) Pig Hogs The pigs in the original litter are social animals. When the pigs from different sources come together, they often have violent bites, attack each other, compete for food, and lie in groups. According to each party, this behavior seriously affects the pigs. The difference in weight gain between individuals can reach 13% when the group's production performance is exerted. The swarm of pigs that had already formed during the lactation period had remained unchanged, and the hog period remained unchanged, which was extremely beneficial to hog production. However, under conditions of poor uniformity in the litter of pigs, it is unavoidable that some weak pigs or light weight pigs can be bred, and pigs with similar sources, body weight, constitution, character and eating habits can be bred in groups. The difference shouldn't be too large. The difference in weight between pigs (early period) groups should not exceed 2~3 kg. After grouping, the group's relative stability should be maintained.
(3) Modulation and Feeding Scientifically modulating feeds and feeding scientifically is of great importance in improving the growth rate, feed utilization, and production cost of pigs. 1 Feed modulation: The principle of feed modulation is to enhance palatability and increase feed. Conversion efficiency. 2 feeding methods: free feeding and limited feeding two feeding methods, the former high daily weight gain, thicker backfat; the latter high feed conversion efficiency, thin backfat. In order to pursue a high daily weight gain, it is best to use a free-feeding method in order to obtain a carcass with a high lean percentage. If the pigs are three-way hybrid pigs or hybrid pigs, the free-feeding method can be adopted, and if the diet is slightly adjusted, a high daily gain and superior grade carcass can be obtained. In the early period of hog adopting free food intake, and limiting the amount of energy feed in the later period, the daily total weight gain is high and carcass fat will not be deposited too much. The number of feedings for a limited feeding method should be based on the type of feed, the concentration of nutrients in the diet, and the age and weight of the pigs. In the piglet stage, the number of daily feedings can be appropriately increased and gradually decreased thereafter. Generally, 4 times in the early days, 3 times in the middle period, and 2 times in the later period.
(4) Supply of clean drinking water The drinking water of pigs varies with body weight, ambient temperature, dietary properties, and feed intake. Generally, in winter, the amount of water consumed by pigs is about 2 to 3 times the amount of air-dried feed. About 10% of body weight; about 4 times or about 16% in spring and autumn; about 5 times or 23% in summer. Drinking water equipment is best for automatic drinkers.
(5) Tune 1 Limiting feeding to prevent strong and weak food: When transferring pigs, it should be noted that all pigs can feed evenly. In addition to having a sufficient length of food trough In time, the pigs that did not dare to feed can get food, help establish the order of colony, and arrange them separately. 2 Feeding, sleeping, defecation Triangulation, keeping pigsheds dry and clean: Usually, single or multiple simultaneous use of training, waiting time, dung, grazing and other methods are used for tuning. For example, when a young piglet is transferred to a new pigsty, a small amount of grass is placed on the sterilized pig bed, the feed is put in the trough, and a small amount of excrement is piled in the designated defecation station, and then the young pig is rushed to the new pigsty. Some pigs were found not to have defecation at the designated place. They should scoop the excrement on the dung pile and combine it with the waiting and driving. This will soon lead to the habit of triangulation.
The key to good tune-up work lies in grasping early and grasping diligence.
(6) Castration, epidemic prevention and anthelmintic castration: China's pig breeds are sexually mature, and are usually castrated about 35 days after birth and weigh 5 to 7 kg. In recent years, early postnatal piglets (about 7 days of age) have been recommended to castrate to facilitate postoperative recovery. Pigs Most current sows in intensive pig production in China do not castrate, and boars use early castration, which is a measure favorable to hog production. While foreign lean-type pigs are sexually mature late, young sows do not generally castrated to produce pigs, but boars, due to the presence of androgens, have an unpleasant odor and affect the quality of the meat. Usually bovine castration is used as a hog. produce.
2 Epidemic prevention: To prevent infectious diseases such as swine fever, swine erysipelas, swine lung disease, piglet paratyphoid fever, and viral dysentery, a scientific immunization program must be established to prevent vaccination.
3 Insecticides: The parasites of pigs are mainly parasites such as aphids, ginger schistosomiasis, cockroaches, and scorpions. They are usually first dewormed at 90 days of age. If necessary, they must be re-examined at about 135 days of age. Deworming twice. After taking anthelmintic drugs, observe them and save them in case of side effects. Defecation excreted feces, should be promptly cleared and compost fermentation to kill the eggs to prevent re-infection.
Feeding and Management of Growing Finishing Pigs
(1) The consistent fattening method divides the entire pig rearing period into two stages, ie, 20-60 kg in the early stage and 60-100 kg in the latter stage; or it can be divided into three stages, that is, 20-35 kg in the early stage and 35-60 kg in the middle stage. 60 to 100 kg. Different nutrition levels and feeding techniques were used in each period, but higher nutrition levels were always used throughout the rearing period. In the later period, limited-feeding or reduced energy concentration of diets was used to achieve fast weight gain and short feeding periods. High pig rank, high slaughter rate and good economic benefit.