Early spring grass, young water, good palatability, is the food of livestock, but should not be grazing prematurely, otherwise unhealthy for livestock, prone to two diseases, briefly described as follows:
Hypomagnesia
Hypomagnesia, also known as grasshopper, occurs mainly after grazing 1 to 2 weeks in the early spring.
Pathogenesis: Young grass contains less magnesium, potassium and nitrogen are more, and potassium and nitrogen can affect the absorption of magnesium. As a result, the body lacks magnesium. The incidence of bulls is lighter, and the incidence of heavier cows during lactation is heavier.
Symptoms: Sudden onset with sudden or catching cold. Mild, nervous, terrified and unsteady when walking. In severe cases, the appetite decreased greatly, convulsions occurred, and the limbs involuntarily stroked after lying down; the amount of cow milk produced was greatly reduced.
Prevention: due to the lack of magnesium and calcium deficiency at the same time, it should make up magnesium and calcium. (1) Bone meal: Add by 1% concentrate. (2) Magnesium Oxide: 50 grams of adult cattle and 10 grams of calves are added to the diet.
Siqing disease
Causes of morbidity: In the spring, the animal needs urgently green feed, and after eating a small amount of young grass, it induces a strong appetite, that is, aversion to yellow grass. Grass can not meet the demand, that is, long-term expectations.
Symptoms: Standing uneasy, often wanting to go out. In the wild, looking around, I can't see the grass. Feeding forage in the winter, the attitude is indifferent, the food intake is greatly reduced, the time goes by a long period of time, the senility is reduced, and it is weak and unable to endure labor.
Prevention
(1) Do not grazing prematurely in early spring.
(2) At the bottom of the tongue, acupuncture points are used to prick the bleeding with a triangular needle, and the tongue is rubbed with a small amount of salt.
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