First, adjust the diet of summer dairy cows to achieve the principle of less and refined, increase high-energy high-protein feed, reduce the volume of diet, choose a good quality, easy to digest, good palatability feed, mainly high-quality roughage (high quality 3 kilograms of hay, 20 kilograms of high-quality Corn silage, and 10 kilograms of fresh lees. Do not feed poor quality roughage because digesting these feeds will generate more calories. Appropriately increase the proportion of concentrates, and mix some water properly (as a group, not as water) to facilitate the intake of cows. Increase the amount of buffer substances in the diet, baking soda from the daily 0.4% to 0.7%, potassium increased to 1.3% to 1.6%, sodium accounted for 0.4% to 0.6%, magnesium oxide accounted for 0.7% to 1.1%. If possible, feed some beets, beets, carrots, potatoes, vegetables, melons and other juicy feeds to promote digestion and increase milk production.
2. Feed more dry matter when it is cool, feed it earlier, and increase the feeding rate between the early and late slots, and place 2/3 of the diet before 7:00 in the morning. After 21 o'clock in the evening, feed the silage and dregs feed in the feeding trough of the playground at night to extend the feeding time.
Third, drinking enough water in summer cows need to increase, adult cows 5 to 6 times a day, the general amount of drinking water to 50 to 70 liters, individual lactating dairy cows up to 100 liters, must ensure that the cows have enough water. It has been determined that lactating cattle need 4 litres of drinking water for every kilogram of milk produced. If the diet is too dry, you can mix the ingredients with water to achieve a moisture content of 45% to 50% to increase feed intake. Put 0.5% salt in drinking water, supplement salt consumption, ensure normal metabolism of cattle, and promote cow digestion. In addition to drinking water during feeding, a sink should be set up at the playground for the cows to drink freely. To prevent the corruption of drinking water, wash the sink once a day and replace drinking water. Increase drinking water appliances, ensure sufficient drinking water, increase drinking times and drinking time. Conditional drinking water can be installed, with thirsty with the drink.
Fourth, feed additives Summer should be added to the cow's diet potassium, calcium, sodium, magnesium, phosphorus and other minerals. Potassium can increase to account for 0.8%~1.3% of dietary dry matter, sodium 0.5%, and magnesium 0.3%. Tests have shown that each cow is fed with 5 mg of potassium iodide each day in summer, which can greatly reduce the impact of heat stress on dairy cows and increase milk production by 24%. In addition, adding 0.1% to 0.2% methionine to the diet can increase the milk yield by 15% to 24%, and the feed conversion rate can be increased by more than 100%. That is, 1000 kg of feed can add 1 to 2 kg of methionine, which can save 100 kg. Formulated feed.
Fifth, to feed mung Bean soup mung bean soup with Qingrejiedu, the role of sunstroke cooling. Conditional farms should drink Green bean soup for dairy cows in summer. Use 1~1.5 kg of fresh green beans, add 4~5 kg of water, boil for 1~2 hours, add 40 kg of clean drinking water, and give the cow a Beverage Service once a day.
Six, feeding congee material will be part of the condiment to congee material. 1.5 kg of concentrate feed, 1.25 to 2.5 kg of carrots, 58 kg of water, boiled porridge, let cool and pour on silage, can increase the urine output of the milk steak and take away more calories.
Seven, low-density breeding dairy cows should not be overcrowding, local cattle breeding more narrow, cattle and calves licking, crowded with heat, it is easier to increase the temperature, the danger to dairy cows, should increase the possession of each cow Area, cattle cool. A pergola should be set up on the sports ground to prevent cows from being exposed to the sun and rain, and wipe their foreheads and temples on both sides with “wind essence†to refresh the heat.
VIII. Heat stress In order to prevent dairy cows from heat stress, cows can be given cold water, or some heat-stress resistant drugs such as baking soda and vitamin C can be added to drinking water. Vitamin E prevents the oxidation and destruction of fat in dairy cows, prevents the formation of oxides in the body, prevents the oxidation of other vitamins, and promotes the absorption of vitamin A and vitamin D in the intestine. In the summer, 3 to 5 times more vitamin E can be added to feed to reduce the risk of heat stress.
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