Summer heat, resulting in reduced appetite, lack of energy, milk production decreased. Strengthening feeding and management can reduce the degree of heat stress and keep cows producing stable and high yields in summer. So what should we pay attention to when raising dairy cows in summer? Temperature, humidity and temperature and humidity index Dairy cows are cold-resistant and high-temperature animals. The suitable temperature for dairy cows is 10°C~20°C. Under this temperature condition, the heat exchange of dairy cows is in equilibrium. In summer, high temperature and high humidity lead to imbalance in body balance and systemic reactions. This phenomenon is called heat stress. When the average temperature is above 25°C, the feed intake, milk production, and daily gain of the cow are all significantly reduced; the feed intake at 40°C is 60% lower than that at 10°C~20°C; the relative humidity of 50% to 60% is suitable. With the production performance of dairy cows, high humidity is not conducive to thermal regulation. Using the temperature and humidity in the meteorological elements to comprehensively characterize the index of animal comfort in the meteorological environment is the temperature and humidity index. When the temperature and humidity index (THI) was 22 to 26, mild heat stress, 27 to 31 moderate heat stress, 32 to 37 severe heat stress, and THI ≥ 38 cows faced death threats. Use of cooling facilities to increase air circulation in cattle houses For semi-enclosed cowsheds, windows, doors, and curtains should be opened to increase ventilation. For open cowsheds, ventilation facilities or electric fans can be installed if conditions permit, which can reduce the indoor temperature by 2°C~3°C and accelerate the heat dissipation of the cattle body. Install mist spray facilities. Spray the cow's head and bosom with cold water mist to reduce the temperature of the bovine body, but it should be noted that the water spray should generally be carried out in the mid-day when it is hot. The time should not be too long and the frequency should not be too frequent, otherwise it will lead to humidity inside the house. Large, causing cows to heat difficult. Normally, the cowshed should be kept dry and free of water. The relative humidity should be kept below 80%. Improve feeding methods Adjust the feeding time and feed early or late (before 7 o'clock in the morning or after 9 o'clock in the evening). Appropriately increase feeding times and increase night feeding. It is recommended that the amount of feed should account for more than 60% of the ration in the evening in the summer. This can compensate for the lack of feed intake due to high temperature anorexia. Improve dietary nutrient concentration Adjust feed ingredient composition. In order to reduce the dry matter intake of dairy cows, it is important to increase nutrient intake as much as possible so as not to reduce nutrient intake. This includes two aspects. The first is to adjust the rough ratio in the diet, that is, to increase the ratio of concentrates and to reduce the amount of coarse feed. This is not only because of the poor palatability of roughage relative to concentrate feed, and its low nutrient concentration, but also the fact that roughage produces more heat and consumes more during the digestion and metabolism process, leading to more heat dissipation. However, it should be noted that the maximum proportion of concentrate should generally not exceed 60%. The second is to adjust the feed ingredients for the diet, reduce the amount of general feed, increase the quality of feed such as whole-grain cotton, soybeans, high-quality herbage, whole plant silage, etc., pre-lactating and high-yielding dairy cattle diets should also add fatty acids, calcium, amino acids, etc. Rumen feed varieties. Rumen buffer is used. Due to the increase in the proportion of concentrates in the summer diet, the diet should be supplemented with 0.75% to 1.5% sodium bicarbonate (baking soda) or 0.35% to 0.40% magnesium oxide, which is beneficial to the rumen and nutrients. Digestion and absorption. Add heat stress relief substances. Although the content of potassium, sodium, and magnesium in feeds is relatively abundant, due to increased sweating of dairy cows, diets generally cannot meet the needs of dairy cows at this time, and additional potassium, sodium, and magnesium are needed in the diet. In order to balance the balance of cation and anion produced in dairy cows' diets, 30 grams to 50 grams of potassium carbonate, 60 grams to 100 grams of magnesium sulfate, and 120 grams to 160 grams of salt can be added to each cow diet. Since heat stress increases the consumption of vitamin A in dairy cows, the amount of vitamin A in the diet should be doubled in summer. Guarantee clean drinking water More than 87% of the water in milk, cows need about 4 kg of water per kilogram of milk produced, so water is extremely important for dairy cows. The amount of drinking water of dairy cows is related to the amount of milk and temperature, and insufficient drinking water will directly affect milk production. In the summer, the amount of water consumed by lactating cows can be 3 to 5 times the amount of lactation. Always clean the sink, regularly sterilize, replace drinking water, keep it fresh and cool, and let the cows drink freely. This will not only ensure the milk yield, but also increase the amount of milk steak to be drained, taking away excess calories from the body and maintaining normal body temperature. Strengthening health management and disinfection In the summer, more mosquitoes and flies will not only interfere with the rest of the cows, affect the milk production of dairy cows, but also cause diseases easily. Aerosol insecticides can be used to periodically spray the cattle body and its surroundings to eliminate mosquitoes and flies. To remove excrement in time, keep the barn and playground clean and dry. Disinfect once a week with 5% of suzhou children or 2% caustic soda solution, you can also often disinfect the cowshed with lime powder to deodorize and dehumidify and reduce the occurrence of summer diseases. These are the precautions for the dairy cows in summer. When the dairy cows are being bred, they must follow scientific methods, pay close attention to the changes in temperature, and do a good job in order to be able to breed good cows and generate greater economic benefits. We have not only conventional Honey but also organic honey, which have certified by BCS German. The main type is organic polyflora honey, organic acacia honey and organic vitex honey, which come from the northeast of China and Northwest of China. We supply transaction issued by BCS GERMAN for each lot when export. Organic Polyflora Honey,Organic Acacia Honey,Organic Vitex Honey,Bee Honey,Vitex Honey Easy Food (Jiaxing) Co., Ltd. , https://www.jxeasyfood.com