When summer arrives, when the temperature exceeds 30°C~33°C, it is easy for livestock to not get enough nutrients due to the decrease in feed intake. The ratio of feed to meat is increased, and the production performance is degraded. At the same time, the suitable temperature and humidity in summer provide bacteria. Breeding environment, causing the spread of disease. So how do you keep the pigs productive at high temperatures during the summer?
First, adjust the feed formula
In the hot season, not only the quality of the feed should be paid attention to, but also the mildew and excessive water should be prevented. The main thing is to adjust the feed formula, ensure the appropriate nutrient level, ensure the pigs to consume enough nutrients, and strengthen the feeding management and improve the livestock. The environment within the house reduces the stress on the herd. Its specific practice:
1. Choose fresh, high-quality, palatable feed, moderately reduce the proportion of crude fiber in the diet to reduce the body heat. 2% to 3% of fat can be added to the diet because of the small volume of fat, high heat energy and less heat gain.
2. Improve the protein level of the diet, the fattening pig CP≥13%, the breeding pig CP≥16%, the high protein diet can improve the appetite of the pig and increase the feed intake of the pig.
3. The metabolism of vitamins in the body is strengthened under high temperature environment, and the demand for vitamins in pigs is also increased. At this time, moderately increasing the content of vitamins and minerals in the diet can alleviate the effect of heat stress on pigs. It is recommended to add 300 mg of vitamin C, 200 mg of vitamin E and 250 mg of sodium bicarbonate per kg of the diet.
4. Add Chinese herbal medicine additives to the diet. Chinese herbal medicine can comprehensively regulate the physiological metabolism of pigs at high temperatures, promote the growth and development of pigs, and improve the body's immune function. In the high temperature environment, a certain proportion of pig auxin (Chinese herbal preparation) is added to the diet of weaned piglets, which has a good growth promoting effect and can reduce the ratio of meat to meat and cost of materials. Chinese herbal medicines such as hawthorn, atractylodes, tangerine peel, betel nut, astragalus, and Daqu can be used as feed additives to alleviate the effects of hot environment on commercial pigs and increase weight gain and feed utilization. The Chinese herbal medicine, vitamins, minerals, electrolytes, etc. are formulated into additives according to a certain ratio, which can coordinate the regulating function of the pig body, enhance the adaptability of the pig and the ability to resist high temperature, thereby alleviating the heat stress of the pig.
5. Conditional pig farms can add extra green and juicy feed to the pigs.
Second, improve feeding management
1. Scientifically arrange feeding time and increase the number of feedings. In the summer, due to the high temperature during the day, the weather is cool in the morning and evening, so that some adjustments should be made in the feeding time and feeding times. Specifically, the piglets are fed more than 6 times a day, and the fattening pigs and breeding pigs are fed 3 times a day. The feeding time is selected from 5 am to 6 pm and from 7 to 8 pm, and the lunch is avoided at noon.
2. Strengthen the ventilation of the pig house and do a good job in heatstroke prevention and cooling. Frequently remove the weeds around the pig house, open all doors and windows, keep the air circulating, conditionally install the ventilation fan, increase the ventilation of the pig house, speed up the air circulation speed of the pig house, and prevent the pig house from forming a high temperature and high humidity environment. However, when the outside temperature exceeds 30 °C, increase the wind speed and increase the ventilation. When encountering extremely high temperatures (above 38 °C), emergency measures should be taken, such as spraying the pig body with water or spraying the roof, walls, floors, etc. of the pig house with water. Conditional pig farms can purchase power sprayers, spraying water and cooling the pigs and their living environment 3 times to 4 times a day.
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