I. 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 the pig's breed, age, physiological stage, and feeding conditions. The optimum temperature for finishing pigs can be calculated according to the formula: T=0.06W+26 (T means temperature, W means pig weight kilograms). For pigs weighing 100 kg, the optimum temperature for maximum weight gain is 20°C. Second, the air humidity Humidity is high, and the disease resistance of pigs is weakened, which is conducive to the growth and reproduction of pathogenic microorganisms. Pigs are prone to develop phlegm, eczema, and respiratory diseases. When the relative humidity increased from 45% to 95%, the pig's daily gain decreased by 6 to 8%. When the temperature is 11~23°C and the relative humidity is 50~80%, the fattening effect on the pig is best. Third, the air speed On hot days, the air flow is conducive to evaporation and heat dissipation, and the piggery needs more ventilation. In cold weather, the air flow enhances the pig's heat dissipation and exacerbates the degree of coldness. When the temperature was 4~19°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 0.1-0.2 meters per second, and the maximum is not more than 0.25 meters. Fourth, the degree of lighting The intensity of light has a significant effect on the metabolism of pigs. Appropriately weakening the light intensity of pigs can increase feed utilization by 3% and increase weight gain by 4%. Fifth, captive density Raising breeding density can make full use of available space and reduce pig raising costs. To reduce the density and ensure the space needed for pig growth and development can reduce the amount of feed intake, and can reduce the incidence of spasms caused by narrow spaces, such as urine excretion, tail biting and other issues. Therefore, we must reasonably control the stocking density. Six, ground slope Pigs eat, sleep, and pull the triangle to facilitate cleaning and disinfection of the pens, but no water. Bars from the places where they eat and sleep should have a certain slope to pee urine. Seven column width The ratio of length to width of pigs 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. Dehydrated Purple Sweet Potato Powder
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