One, good breed fattening piglets should use lean-type hybrid piglets. It is better to use lean pigs such as Yorkshire, Duroc and Landrace as males to crossbred local or breeding sows to form binary or multiplex piglets because of their strong resistance to disease, rapid growth and growth, and provincial feed. , welcomed by the market and high economic benefits. Piglets are the first to look for coat color, body shape, etc., whether they have the characteristics of long-strip and other lean-type pigs. Individuals should choose chest width, body length, mouth short and uniform, legs open, hips full, hair sparse light, eyes are God, loud, powerful, struggling, short tail, coiled or Swing kept, with a big piglet in the nest. Don't be fooled to buy small pigs or piglets. Second, the site of the Leshe pighouse should be as high as possible in Gaozao, Xiangyang, avoiding phoenix and quiet place. The construction of the pen quarters should follow the principle of “cool in winter, cool in summer, convenient in feeding, adapted to local conditions, and economicalâ€. The current promotion is the winter warm plastic shed pig house. When constructing, use appropriate graded cement floors and try to sit north and south as far as possible to facilitate feeding, water supply, disinfection, excrement removal, evacuation during accidents, observation and other feeding and management. Membrane sheds were installed on the film shelf in winter, and summer and autumn measures were taken to shade the rain, and a silage pond was built next to the rim. Third, the good material (a) with the feed requirements of good materials meet the production purpose and physiological characteristics, complete nutrition, appropriate size, good palatability. Full-price compound feeds can be used in suburban areas and where transportation is convenient; most other farmers should use local corn, bran, soybeans, cake residue and other agricultural and sideline products and feed additives or concentrated feeds. The specific formula refers to the local livestock science and technology data, packaging instructions or consultation with livestock science and technology personnel. It is also possible to check the feeding standards of the weight-finishing pigs at each stage and the nutritional ingredients of the local feed ingredients on the basis of learning the knowledge of feed formulation. Heavy, comprehensive formulation of feed range, price, palatability and volume. (2) Simple processing of feed ingredients The bean seeds are crushed after roasting, bean cakes and bean dregs are cooked, sweet potatoes and potatoes are washed, and cut and steamed. Green grass feed should be picked out, cleaned, properly chopped and then fed, rapeseed cakes, cottonseed cakes and other toxic feeds should be detoxified or limited, and roughage should be crushed for processing and fermentation, such as dry leaves and clam shells. Soft soaking (dumping soaking) can be mixed with the concentrate. (3) Precautions (1) Do not feed lean-type pigs with traditional high-energy, low-protein feeds such as corn and potatoes. Otherwise, they will still be rich and fat. (2) Purchase of feed additives, concentrate feeds and premixes from licensed regular pharmacies or manufacturers. (3) When mixing various feeds and additives, be sure to measure accurately and stir evenly. (4) Pay attention to the quality of various nutrients. For example, animals and plants, grasses and legumes, and mineral and biological properties should pay special attention to the balance of essential amino acids in proteins. (5) The protein content in the feed before, during and after the fattening should be from high to low, respectively 16%, 14%, 13%. (6) If one or more raw materials are missing in the formula, similar raw materials may be used instead. (7) According to the prescription period and expected slaughter time, add drugs and additives that affect meat quality and toxic feeds should be stopped at a proper time. Fourth, good law (a) before the preparation of fattening (1) disinfection of the shed. Commonly used drugs are 3% to Su children, 10% to 20% lime water, 30% of trees and gray water, etc., liquid medicine should be used interchangeably, soil circles should be completely raised. (2) Choose piglets. (3) vaccination. (4) timely castration. 30 to 35 days of age, weight 5 to 7 kg when castration; outsourcing piglets should be in the new environment and begin to gain weight when castration. (5) deworming, gastric lavage, stomach. Every 5 kg of gross weight, on the first day of deworming with levamisole 2 to 4 tablets, the second day gastric lavage with baking soda 2 to 3 tablets, the first 3 days stomach with rhubarb soda 2 to 3 tablets. Pulverize the tablets into powder and add a small amount of feed to your meal every evening. This method should be repeated once a month. Be careful to mix well and each pig can eat. (6) Reasonable grouping. According to breed, source, weight, eating fast and slow, the best of the nest is not divided into groups. (B) fattening methods (1) "four set." Timing, quantitative, qualitative, fixed temperature. The daily feed amount is calculated as dry feed, accounting for 3% to 5% of body weight; 15 to 25 kg of pigs, 6 times/day; 25 to 40 kg of pigs, 4 times/day; pigs of 40 kg or more, 3 times/day. The interval between meals is as uniform as possible, and at least the last meal is night food. Every time it is fed, it is full and there is no leftover material in the tank. Change the feed to a gradual transition, after 4 to 5 days. The temperature of the feed should be roughly the same, and it should be cool in winter and cool in summer. (2) After feeding the compound feed, feed the green and green (storage) feed. Generally, the feed is fed 3 times per meal, and 0.25-1.0 kg/head of green feed is given after each meal. (3) Provide enough clean drinking water. Warm water should be given in the winter, early spring or when there is a sickness. (4) Create a good environment. Keep the circle clean and clean, cool in winter and cool in summer, with good air and quiet. Adjust the pig diet, defecation, sleep three positioning. Winter cold, summer heatstroke, summer sprinkle some water on the ground, winter padding some grass. (5) Timely slaughter. Generally fattening to about 6 months of age, weight 90 to 100 kg slaughter. Fifth, good medicine (A) adhere to the quarantine, segregation system In addition to buying piglets to see the varieties, but also whether there is no diarrhea, deafness, eyelids, fever, lack of energy and other symptoms, with or without ear tags, look at the certificate of origin and the market quarantine Quarantine certificates, etc., pigs, especially infectious diseases, must not be bought. Observe half a month before entering the circle, at least 3 to 5 days, after the isolation and treatment of sick pigs. Do not purchase pigs and feeds from the affected area. (II) Regular prevention and control of insecticides Spring and autumn seasons Regular preventive injections of foot-and-mouth disease, swine fever, swine erysipelas, swine plague and other vaccines. At the same time, do not allow cats and dogs to snarl in the ring to prevent cross-contagious diseases. Periodically repel internal and external parasites. Be careful not to disable the drug withdrawal period for drugs and available drugs. (3) Disinfect the pens and troughs on a regular basis for 15 to 30 days. Put some quicklime in front of the door to disinfect the feet of the people and replace them at any time. (D) usually pay attention to observation, "prevention-based" disease in time for the veterinary symptomatic treatment. (Li Duying, Kangxian Animal Husbandry Center, Gansu Province, China Postcode: 746500)
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