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Qingfeng, Shandong | Feeding and Breeding Methods for Dairy Cows to Maintain High Yield at High Summer Temperature
Release time:
2021-06-09
Rocky Lick Brick 1: Solve the problem of maternal reproduction (for example, long interbirth time, repeated mating infertility, frequent abortion) 2: extend the peak period of lactation; improve milk production. 3: Extend the life of the mother (a cow with an annual output of 8,000 liters loses 60kg of minerals in its milk) 4: Improve the comprehensive health index of dairy cows and reduce the incidence of dairy cows (e. g. mastitis, hoof disease). 5: Cow pica disappears. 6: to promote food digestion, improve feed utilization, saving concentrate.
The suitable temperature range for dairy farming is 5 ℃ ~ 25 ℃, and if the temperature exceeds 27 ℃, the feed intake of dairy cows will decrease. When the temperature reaches or exceeds 32 ℃, dairy cows show obvious heat stress, with mouth opening, tongue spitting and accelerated breathing. The feed intake generally decreases by 10% ~ 40%, and the milk production also decreases significantly, with a daily decrease of 3~9kg. At the same time, due to insufficient intake of coarse feed, the acetic acid in the rumen decreased, resulting in a decrease in the milk fat rate of fresh milk. Due to the high metabolic rate, high-yielding dairy cows produce 3 to 4 times more heat than ordinary dairy cows, so the adverse reactions caused by high temperature in summer are more prominent.
In order to ensure the health of dairy cows, maintain the stability of milk production, and safely spend the hot summer season, the following tasks should be paid attention to in the feeding and management of high-yield dairy cows.
To adjust the nutritional level of the diet of high-yielding dairy cows, so that they can absorb the necessary nutrients as much as possible under the condition of heat stress affecting the loss of appetite.
1, the appropriate increase in the nutritional ratio of concentrate and coarse feed in the diet, can help to maintain milk production. The ratio of concentrate and coarse feed of high-yielding dairy cows is generally 55 ∶ 45, and when there is obvious heat stress and feed intake decreases, the ratio of concentrate and coarse feed can be increased to 6 ∶ 4 to meet their milk production needs. At the same time, in the supply of roughage should be appropriate to reduce the high content of crude fiber feed, to provide easy to digest high quality alfalfa, Leymus chinensis and so on.
1: Solve the problem of maternal reproduction (for example, long interbirth time, repeated mating infertility, frequent abortion)
2: extend the peak period of lactation; improve milk production.
3: Extend the life of the mother (a cow with an annual output of 8,000 liters loses 60kg of minerals in its milk)
4: Improve the comprehensive health index of dairy cows and reduce the incidence of dairy cows (e. g. mastitis, hoof disease).
5: Cow pica disappears.
6: to promote food digestion, improve feed utilization, saving concentrate.
2, according to the milk yield to feed the high-energy high-protein nutrient containing rumen bypass fat (fatty acid calcium) and rumen bypass protein, can be appropriate to reduce the post-feeding body heating of dairy cows, to improve milk yield, maintain the body condition of high-yield dairy cows have a greater help. The reference formula of nutrition materials is as follows: corn flour 41%, soybean meal, puffed soybean, corn protein, yeast and other protein feeds 40%, fatty acid calcium 15%, calcium hydrogen phosphate 2%, salt 1%, vitamin and trace element additives 1%. Nutrients are generally only fed to high-yielding cows and one-child cows. According to body condition and milk yield, the daily feeding amount per cow is 0.5-2.5kg.
Baiwei Tongbao™rumen-protected soybean mealEfficacy
Dry matter intake:The unique flavor of the product can increase the appetite of dairy cows and increase feed intake.
Milk production of cows:The advanced process can take into account the content of rumen bypass protein and the digestibility of small intestine.
milk milk ingredients:High quality rumen bypass protein and amino acid composition can improve the supply of milk protein precursor.
Lactation Sustained Force:The high content of rumen bypass protein and essential amino acids can meet the demand of high quality protein in mammary gland.
In summer, due to the increase in the amount of concentrate feeding, the acidity of the rumen of cattle will increase, which is easy to cause acidosis, ketonemia and other diseases. Adding 1.5% sodium bicarbonate to the total dry matter of the diet can neutralize gastric acid, increase the yield of dairy cows by about 5%, increase the milk fat rate by 4.4%, and effectively prevent the occurrence of the above diseases.
1. Under high temperature and heat stress, appropriate supplementation of vitamin A, C, E and niacin in the diet can effectively prevent or reduce the harm of high temperature to dairy cows. The specific supplementary feeding amount can be referred to as follows: vitamin A is increased by 10-150000 international units per day, vitamin C is added 200 mg per ton of feed, and nicotinic acid is added 6g per head per day.
2. Feeding 1% ectopic acid dairy cow additive in concentrate can also relieve heat stress, make breathing uniform, increase appetite, and the decrease in milk production caused by high temperature can obviously rise.
3, in the drinking water and feed to feed the diet dry matter 1.2%~ 1.5% of potassium chloride, while supplementing the buffer, to improve the drinking water of dairy cows to prevent excessive water loss and milk fat rate decline has a greater benefit.
It can increase the feed intake of dairy cows, which is extremely beneficial to the growth of milk production in the peak period of lactation of high-yielding dairy cows. The feeding can reach 4 to 6 times a day in the hot season.
In summer, the temperature is relatively high during the day and the appetite of dairy cows is poor. We can try our best to avoid feeding dairy cows at noon. We can change the previous three balanced feeding times a day to more daily ration at night and early morning, increase the frequency of supplementary feeding at night and feed once at about 0 o'clock in the middle of the night. In this way, dairy cows can eat more food and the body heat generated after eating can disappear before the temperature rises in the morning.
A variety of combinations of concentrate, coarse and green feeds are strictly prohibited from feeding moldy and dewy forage.
The amount of drinking water of dairy cows in summer is greatly increased. Lactating cows need 130-170 liters of drinking water every day, and high-yield cows can reach more than 200 liters, so as to increase excretion, take away excess heat from the body, and maintain normal body temperature. Therefore, it is necessary to ensure sufficient water for cattle to drink.
In addition, we should also do a good job of preventing heatstroke and cooling in dairy sheds, such as evacuating dairy cows and reducing the feeding density of each barn. Use mechanical devices to increase ventilation and ventilation; Water is sprinkled on the ground in the barn to reduce the temperature in the barn. At the same time, water can be often put in the trough, which not only makes the cow drink water at any time, but also takes away part of the heat in the form of evaporation to achieve the purpose of cooling.
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