Improve feed standards. The ruminal fermentation of dairy cows and the energy generated by them are diverted to maintain body temperature, and raising standards, especially energy standards, must be raised. Adding 3% to 5% of animal fats and supplementing calcium in dairy diets can effectively increase milk production and milk quality. The amount of mixed concentrates can be increased by 15% to 20%, and the concentrate is best made into porridge-like feeds. Feed and feed hot porridge at about 38°C, which not only provides good palatability but is also easy to digest, but also increases the cold resistance of the cattle body.
It is advisable to feed silage corn at a certain rate and to feed crop stalks such as corn stalks and wheat stalks. Special attention should be paid to the phenomenon of acidosis that is easily caused by cows fed with rancid silage. If this phenomenon is found, the rancid silage should be stopped immediately, and the hay should be fed with good quality and be treated symptomatically.
In winter, the cows eat more hay, and the secretion of digestive juices increases. Only about 50 liters of saliva are secreted each day. If you do not drink enough water, appetite will decrease, resulting in decreased milk production and even disease. Cows need about 5 kilograms of water for every 1 kilogram of dried feed. Therefore, the total amount of drinking water can not be less than summer. According to research, winter cows drink about 8% more water at 8.5°C than at 1.5°C. However, drinking milk at 20°C for a long time will weaken the body and reduce the digestive capacity of the stomach. The appropriate drinking temperature for dairy cows in winter is 12~14°C for mature cows, 15–16°C for pregnant cows, 35~38°C for calves.
Make up for salt. Salt is one of the main components of gastric juice, and it supplies chlorine and sodium essential to dairy cows. As the secretion of gastric juice from cows increases in winter, the demand for salt also increases. If the salt intake is insufficient, the appetite of dairy cows will decrease and the milk production will decline. Therefore, to ensure that the supply of a certain amount of salt, the amount of salt supply cows, depending on the cow's weight and milk production may be determined, the cow to feed salt every day 30 to 50 grams, the amount should be accurate to prevent poisoning. In addition to mixing 1% of dietary concentrate, a salt tank can also be set up to allow cattle to feed freely.
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