In early spring, green grass sprouts, and horses, cattle, and sheep are extremely fond of eating, but it is not possible to grazing prematurely. Premature grazing will have many adverse effects on livestock and pasture. First, prone to magnesium deficiency in early spring is still warm, cold grass, young, incomplete nutrition. One to two weeks after the livestock has been grazing, grass weakness is common. The main reason is that the young grass contains very few trace elements of magnesium and relatively more potassium and nitrogen, which restricts the normal absorption of magnesium and reduces the magnesium content of the livestock, resulting in the occurrence of magnesium in livestock, also called grass. Cowardly. Livestock are often affected by cold and other stress factors. Suffering from sudden onset of disease, livestock animals exhibit neurotic tremors, abnormal allergies, panic attacks, unstable walking, severe loss of appetite, convulsions, and prone to crawling. The limbs are often not self-conscious. Move and swim. Due to the deficiency of magnesium, abnormal bone calcium may occur in young animals, leading to poor growth and development. Incidence can be affected by the gender at the time of onset. Generally, the symptoms of communal animals are lighter and the female animals are heavier. Dairy cows and dairy cows suffer from severe symptoms during lactation, and their milk production is greatly reduced, resulting in large economic losses. Second, easy to run green through the winter, rarely seen green cattle and sheep once eat grass, even if a small amount of grass, it will increase appetite, and quickly adapt and form a new law and taste, always want to eat grass, not Would like to eat withered hard straw, anti-feeding straw, anomalies. Grassland has just sprouted or just appeared outcropped. The grass grows short, and the cattle and sheep are unable to eat. They always want to go far and find good grass. The cattle and sheep always look around, but they can't always eat on the grass. They have great physical exertion. When running green, they will run the cattle and sheep thin and run away. Third, the easy-to-injury-disease early spring frost dew grass contains large water content, especially in the morning and evening, a large number of cattle and sheep to eat easily fermented belly, and the incidence of acute, such as cattle and sheep can not be treated promptly, died quickly, economic losses. The prevention and control method is not to grazing early, especially in the early morning without animal husbandry too early, can be used to make up forage feed, until the sun comes out and then grazing, put the sun through the hot grass, you can effectively prevent cattle and sheep's bloating disease. The affected animals were to be given an anti-fermentation agent and a laxative to remove food and gas. Severe cases of emergency can be deflated in the urethral position by trocar, if necessary, do not pull out the cannula, inject the enzyme preparation, mirabilite, etc., the effect is better. Rongcheng Jingyi Oceanic Technology Company Limited , https://www.jingyifoods.cn