In order to better understand the importance of reducing heat stress in dairy cows, we must first understand the causes of heat stress. Heat stress in dairy cows is due to the adverse effects of the continuous accumulation of heat in dairy cows on cattle, and cattle farms must take some measures. At the same time, cattle also have some measures to alleviate the accumulation of heat in the body. Cows are warm-blooded animals just like people, and their body temperature should remain unchanged all the time! If the weather is hot, its body temperature will rise, at which time the cow's brain and nerve tissue will issue some instructions to make the body temperature drop.

Heat accumulation in cattle comes from two sources:

First, the main source is the surrounding hot air temperature, humidity is also an important factor. Let's talk about heat stress, in fact, humidity also plays a very important factor. Another source is the cow's own production of heat, which is proportional to the amount of milk produced. Cows that have not entered the milk production stage, such as dry cows, will not show heat stress even if the weather is particularly hot, because they do not produce heat in their bodies and the impact of the environment on them is limited. Unlike people, cows hardly sweat! Cows have very few sweat glands. In hot weather, people's first performance is sweating, through the evaporation of sweat to take away the heat, thus cooling. But cows don't have this function, they don't sweat.

Stress can reduce milk production by 20%

Different milk production, the sensitivity of cows to ambient temperature is also different. When the cow is under heat stress, its body temperature rises, and it feels uncomfortable, the cow's brain will issue the first instruction to let more blood flow to the skin, exchange heat, and release the heat. If this method is not enough to lower the body temperature, the cow will begin to gasp heavily. If it is not enough, the cow will reduce the feed intake to reduce the heat production of the digestive system. Eat less, milk production will naturally decline.
For some pastures, if no measures are taken, the milk yield of high-yielding cattle may be reduced by 20%, and the pregnancy rate will also be reduced by 20%. If the cooling effect is good, milk production can be reduced by only 2% and reproduction by 10%. If a cow's daily output is 30kg, then cooling or not is the difference between 6kg and 0.6kg! Therefore, a cow can produce 5.4 kilograms of milk a day through the spray cooling system! Milk production reflects the most direct factor in the effect of the cooling system.

Good Cow Welfare Treatment Control Heat Stress

The effect of heat stress on dairy cows mainly leads to the decline of milk performance and fecundity in summer and autumn. In order to alleviate and reduce the harm of heat stress to dairy cows, the most important thing is to improve the welfare of dairy cows and improve the technology of dairy cows.
By improving the living environment of dairy cows to reduce the heat caused by the pressure on dairy cows. First of all, it is necessary to block the external heat source from entering the cowshed and the sports ground, and at the same time promote the heat and moisture in the cowshed to be discharged outward, and promote the heat dissipation of the cow body through air supply, water spray, water sprinkling and other measures. In places where the air is dirty and not circulating, cows may be dangerous or even killed in a short period of time. This requires that the cows should also be strengthened in the milking area and the milking area.

Lodge Lick Brick Magnesium to Prevent Heat Stress

1. The cowshed should be built in a well-ventilated place.

Promote the discharge of heat and moisture in the cowshed. Use materials with good insulation properties to construct roofs or add ceilings to reduce heat radiation. Build a pergola on the roof of the cattle house, plant melon vines, spray water or brush lime slurry to reduce reflected and radiant heat.

2. Build a simple pergola in the cow playground

The height of the arbor should be 5 meters, the ceiling material should have good heat insulation performance and low radiation coefficient, the ceiling should be built inclined to facilitate air circulation.

3. Install large ventilation fans and electric fans with large air volume in the house.

Accelerate the flow rate of the gas in the house to facilitate the heat dissipation of the cow body. The air supply effect is the best in the hot season, which is very important for the heat dissipation of the cow body. However, the difference between the body temperature and the temperature of the cow at night is relatively large, which can shorten the air supply time. Generally, the peak temperature of dairy cows occurs in the evening. Therefore, when the temperature is higher than 29 ℃ and the humidity is above 50%, the temperature needs to be cooled from 5 a.m. to 1 p.m. There are more cattle lying on the back at night, which can be changed to position ventilation and air supply.

4. Install spray device in the house

It is best to install it with a ventilation device to spray and send wind energy to significantly promote the heat dissipation of the cow body. But should pay attention to grasp the spray time, if the spray time is too long, will cause the cowshed humidity is too high, and waste water. According to the test, spray once every 5 minutes, each time for 3 minutes, while equipped with a fan, will make the temperature of the cattle house than not installed spray only installed fan 1.5 ℃ lower.

5. Moderate planting of trees and grass around the cowshed and sports field

In order to reduce solar radiation, prevent hot air from entering the cattle house and improve the microclimate of the cattle farm.

6. The cows need to be cooled in the milking area and during milking.

In summer, cows walking to the milking area will increase the heat stress, and the heat produced by cows will increase during the milking process. Therefore, it is necessary to cool down these two areas and install a large power fan to make a large amount of air blow around the cow body.

Rocky Lick Brick

(1) Lodge is the main minerals and trace elements fully mixed premixed products, after high pressure extrusion to form a block. Rocky products are used in conjunction with regular feed to provide a variety of essential minerals to supplement the required nutrients and balance the diet.

(2) The unique pressing technology, the Lodge lick brick generated under the condition of high pressure (the pressure per square inch exceeds 10000kg), has high hardness, strong cracking resistance, wear resistance and soaking resistance. All kinds of minerals are evenly distributed in the licking block, which ensures the free licking of animals and avoids mineral poisoning.

(3) In addition to high hardness and wear resistance, Lodge also has good palatability. All kinds of minerals are evenly distributed in the licking block, which ensures the free licking of animals and avoids mineral poisoning. Livestock like to lick the rocky, their tongue just adapt to the texture of the rocky, so can ensure adequate intake every day, which is of great benefit to livestock. All kinds of minerals are evenly distributed in the licking block, which ensures the free licking of animals and avoids mineral poisoning.

The Role of Rocky Lick Brick

(1) The unique elements of phosphorus, calcium, selenium, manganese, zinc, magnesium and cobalt can effectively help solve the breeding problem.

(2) Magnesium is an effective activator in the rumen of dairy cows, which can maintain normal rumen flora, protect rumen health, participate in nerve regulation and calcium and phosphorus together, promote rumen peristalsis, regulate yin and yang ions, prevent heat stress, balance rumen PH value, and improve feed conversion rate.

(3) zinc, magnesium, copper, selenium elements effectively assist limb hoof health.

(4) effectively solve pica, fur bright moist.

(5) truly solve the problem of individual mineral deficiency in the group and achieve group health.