In recent years, with the increase in the price of pork and the increase in the efficiency of raising pigs, the enthusiasm of farmers for feeding commodity pigs has been greatly mobilized. The key to improving the breeding efficiency of commodity pigs is scientific breeding, careful management, lower feed costs, and increased economic efficiency.
1. Scientific building housing
The pens for feeding commodity pigs should be built in a place with high dryness, sheltered winds, good drainage, no pollution, and convenient traffic. The size of the pens is generally 1 m2 for each pig in summer, 0.9 m2 for spring and autumn, and 0.8 m2 for winter. It is required that the pig house can be shaded and sheltered from the summer in spring and summer, and it can be insulated and protected against cold in autumn and winter.
2. Carefully selected piglets
Feeding commodity pigs, it is best to choose to raise two or three yuan hybrid pigs, requiring piglets with strong physique, hairy luster, normal appetite, full of energy, short mouths, and thin jaws. It is forbidden to purchase piglets in affected areas.
3. Prepare before fattening
The planned commercial pigs were castrated before 40 days of age or with a body weight of about 10 kg. Feeding insecticides with anthelminth or levamisole before fast fattening; 3 days later, use baking soda, mix feeds sooner or later; 5 days later, add rhubarb soda to stomach, or use hawthorn, malt, alfalfa, and cinnamon. Grams, Shouwu, Citrus aurantium, Atractylodes each 30 grams, add appropriate amount of salt, and study according to weight divided feeding materials to facilitate the adjustment of gastrointestinal function in pigs, and promote the digestion and absorption of nutrients.
4. Scientific formula feed
According to the growth rules of "Pig Long Bone, Medium Pork Long Meat, Big Pork Long Cockroach", complete feed is prepared. The weight of 30 kg before the piglet period, the main feature is the rapid bone growth, calcium, phosphorus and trace elements need a large amount. Feed formulation: corn 50%, barley 25%, bean cake 10%, bran 7%, fish meal 6%, bone meal 2%. After 50 kg is the pre-fattening period, the live pigs have large feed intake, energy consumption, strong nutrient intake, and fast daily weight gain. Feed formulation: corn 60%, soybean cake 15%, oil residue 10%, bran 10%, bean powder 3%, bone meal 2%. After 80 kg of fattening, there is less movement of live pigs, fast fat deposition, and slow growth of lean meat. It is required to reduce the energy level of the diet to increase the lean body fat percentage of the carcasses. Feed formulation: barley 50%, corn 20%, bran 15%, oil residue 12%, flour 2%, bone meal 1%. The diet should not be changed or changed abruptly. It should be gradually transformed.
5. Reasonable use of additives
According to different physiological stages of pigs, appropriate amounts of vitamins, auxin and trace elements and salt, yeasts, probiotics, and probiotics can be added to the diet in order to improve feed utilization, promote growth, and prevent disease and disease. Practice has proved that with sesame (fried), vitex (fried), pine needle powder each 110 grams, bone meal, fleece-flower root each 600 grams, baking soda, salt, yam powder, 50 grams each malt, Divine, dried ginger, rhubarb 25 grams each, Fine grinding and mixing. 20 grams of big pigs each day, 17 grams of medium pigs and 12 grams of piglets are effective in promoting the rapid fattening of commercial pigs.
6. Straight line fattening technology
From the weaning to the slaughter of piglets, nutrient-rich diets are provided throughout the period. The advantage is that the fattening cycle can be shortened and feed efficiency and lean meat ratio can be improved. Therefore, during the early period of fattening, adequate nutrition should be provided and the daily gain of 700-800 grams should be striven. In the late period of fattening, as the body weight increases, the amount of exercise gradually decreases, and the fat deposition rate exceeds the increase of lean meat. Therefore, energy feeds should be gradually reduced and appropriate restrictions imposed on keeping.
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