I. Known pig raising temperature: Excessively low temperatures all affect pig feed consumption and weight gain. The appropriate temperature range for pig rearing depends on a variety of factors such as pig breed, age, physiological stage, and feeding conditions. The optimum temperature for fattening pigs can be calculated according to the formula: T=26-0.06W (T means temperature, W means pig weight kilograms). For pigs weighing 100 kg, the optimum temperature for maximum weight gain is 20°C.
Second, notice Air humidity: Humidity, pig disease resistance weakened, is conducive to the growth and reproduction of pathogenic microorganisms, pigs susceptible to phlegm, eczema and respiratory diseases. When the relative humidity increased from 45% to 95%, the pig's daily gain decreased by 6% to 8%. At temperatures of 11°C to 23°C and relative humidity of 50% to 80%, the fattening effect on pigs is best.
Third, we must know the air speed: hot days, the air flow is conducive to evaporation heat, ventilation and ventilation of pigs. In cold weather, the air flow enhances the pig's heat dissipation and exacerbates the degree of coldness. When the temperature was 4°C to 19°C, the pigs not affected by the air flow had a 25% smaller feed intake and 6% faster weight gain than the pigs often affected by the air flow. The airflow rate in winter farms is 0.1 to 0.2 meters per second, with a maximum of 0.25 meters.
Fourth, note the degree of lighting: the strength of light has a significant impact on the metabolism of pigs. Appropriately weakening the light intensity of pigs can increase feed utilization by 3% and increase weight gain by 4%.
V. Concerned about the captive density: To raise the breeding density can make full use of the effective space and reduce the cost of raising pigs. To reduce the density and ensure the space needed for pig growth and development can reduce feed intake, and reduce the incidence of paralysis caused by narrow spaces, such as urine excretion, tail biting and other issues. Therefore, we must reasonably control the stocking density.
Sixth, the ground slope: pigs eat, sleep, pull the triangle position, easy to clean and disinfect the barn, and no water. Bars from the places where they eat and sleep should have a certain degree of slope toward the pee.
VII. Notice: The width of the pens should be reasonable. If the pigs are long in length and small in width, it is not conducive to the growth of pigs. The closer the shape of a pig house is to a square, the more it meets the behavioral needs of the pig.
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