Because of the thick subcutaneous fat, fattening pigs prevent the body from emitting a large amount of heat, coupled with the degradation of sweat glands, and can not distribute the body heat in a large amount of sweat, so the finishing pigs are very afraid of heat, more sensitive to heat stress, fattening pig growth is most suitable The temperature is 15°C-23°C. When the temperature is higher than 25°C, appetite decreases, intake decreases, body temperature increases, Respiratory rate increases, growth slows down, etc. If the temperature continues to be hot, even heat stroke may occur. Therefore, it is very important to do a good job of finishing pigs in summer.
Strengthen the ventilation to open the doors and windows of the pig house to ensure air circulation in the pig house. Install a ceiling fan in the pig house to generate horizontal air flow to promote the reduction of body temperature. If necessary, a roof-mounted exhaust fan can be used to discharge the rising hot air. Ventilation fans are installed to allow air to cross the pig house and increase the ventilation of the pig house.
Reduce Sherwin's temperature by flushing the floor with cool water, cooling the walls, and taking water from tap water. Rinse the water several times a day in the afternoon or in the afternoon. Use no water to reduce the temperature by using pots to reduce the temperature. Use water to cool the pigs. , Spraying or showering the pigs 2-4 times a day can help the pig to dissipate heat. The temperature of the water from the first well is low. It is necessary to dry in the sun for a while before it can be used to flush the pig body. It can not only cool the heat but also make the pig clean. Hygienic, but the pigs should be flushed with water. They should be arranged before feeding, and should not be washed within 30 minutes of feeding. Do not use water to suddenly flush the pig's head to prevent the head blood vessels from contracting and shocking.
Feeding enough water in summer with high temperatures, the body temperature of the pig will also be affected. If the drinking water is sufficient, the body temperature will rise under the regulation of the water, and the pig can expel respiratory air of the lungs from the body through rapid breathing and take water vapor to take away the body. Part of the waste heat. In the summer of pigs, the amount of drinking water is 23%-25% of their own body weight. Drink 0.5% salt water to adjust the body temperature, and keep sufficient clean water in the water tank.
Adjustment of nutrition In summer, when the ambient temperature exceeds 25C, in order to reduce their own heat production, the feed intake of pigs to the energy feed is reduced, so that the intake of other nutrients is also reduced accordingly, which requires a higher nutrient level of dietary compensation. Therefore, in finishing summer finishing pig diets, their energy feeds can be appropriately reduced to increase their protein, mineral and multidimensional levels. During the midsummer period, the energy feed for pig diets accounted for 50%-70%, and the green feed increased from 0.5kg to 1.5kg. The feed should be fresh and the feed should be free from mildew.
Appropriate to make green succulent feed good palatability, rich in a variety of vitamins, can increase the fattening pig feed intake, good health and heatstroke. In summer, heat may be given to some pigs, rind, carrots or fresh vegetables.
Feed heatstroke (1) mung bean soup, take the amount of green beans, add water 20 times until the skin is rotten, cool, drink soup to eat beans. (2) The plants of plantain and light bamboo leaves are decocted or decocted and mixed with the feed to feed the pigs. (3) Add 2000 grams of fresh watermelon rind and add 100 grams of sugar and mix it once every other day. (4) In order to prevent the occurrence of heat stress, cool blood can be added to drinking water.
Do a good job of hygiene to open all ventilation holes in the pig house so that the pig body is cool and comfortable. A 3-5 cm thick sanitary grit is laid in the house and heat is removed through contact between the pig body and the sand. Every day, 20% lime is used to paint the walls and floors for disinfection. The 3% stone carbonate solution is used to sterilize the utensils used. The pig house is sterilized with 10,000 animals.
Mosquito extinguishes flies and mosquitoes can choose dry and dry, chopped ramie uses 25 grams of smoke per cubic meter of space, fly control can use 1 piece of trichlorfon plus 1000 sprays of water, also can choose to stimulate small, harmless to pigs The spray was sprayed on the pig house.
Prevention of diseases in summer with high temperatures, the growth and reproduction of pathogenic microorganisms are becoming increasingly active. Therefore, we must strengthen the prevention and treatment of the diseases of finishing pigs. The food tanks should be washed at least once a day. The pig manure should be regularly removed. The pig house and the surrounding environment must be regularly disinfected with Wankangkang, and must not be fed with moldy feeds. Procedures to prevent infectious diseases such as swine fever, swine erysipelas, and porcine pulmonary epidemic, to ensure the safety of finishing pigs in summer.
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