The quality of boars directly affects the efficiency of pig breeding, and the quality of feed directly affects the role of boars. Some farmers use boar sow feed to feed boars, causing boars to grow faster, sexual maturity is late, sexual desire is not strong, testicular function is abnormal, and sperm cannot be produced normally. So why is it not good to feed boars with lactating sows?
1 The management goal of boars is different from that of suckling sows. The management goal of boar feeding is: good growth rate, feed utilization rate, daily weight gain 100-500 g / day, prevent growth too fast, too heavy; maintain normal sexual desire and mating agility; produce a large number of normal and energetic Sperm.
2 Boar energy levels are lower than those of lactating sows. The boar feed energy level should be 11.3-12.1 MJ/kg to maintain the boar's own growth needs, semen production, and breeding activities. High dietary energy levels can cause boars to grow too fast, increase fat and burnout, loss of libido, and poor semen quality.
3 Boars require more vitamin E, zinc, and selenium than lactating sows. The right amount of vitamin E and trace elements zinc and selenium can promote the formation and activity of sperm and improve the quality of semen. The vitamin E content of the boar diet should be increased to 40-80 mg/kg, the zinc content is 80-150 mg/kg, and the selenium content is 0.3 mg/kg, so that the fecundity will be significantly enhanced.
Therefore, farmers should not use boar sow feed to replace boar feed. Breeding boars should be equipped with full-price, high-quality, low-cost special feed, or purchase reputable brand-name special feed, and feed regularly, quantitatively, twice a day, feed 2-3 kg per day. At the same time, it is necessary to maintain a reasonable level of crude fiber, preferably 0.5-1 kg of green feed or silage per day.
A weather station is a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather and climate. The measurements taken include temperature, atmospheric pressure, humidity, wind speed, wind direction, and precipitation amounts. Wind measurements are taken with as few other obstructions as possible, while temperature and humidity measurements are kept free from direct solar radiation, or insolation. Manual observations are taken at least once daily, while automated measurements are taken at least once an hour. Weather conditions out at sea are taken by ships and buoys, which measure slightly different meteorological quantities such as sea surface temperature, wave height, and wave period. Drifting weather buoys outnumber their moored versions by a significant amount.
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