Early spring grass, young water, good palatability, is the food of livestock. However, it is not advisable to grazing prematurely. Otherwise, livestock is not good for grassland.
1. Hazards to Livestock: Early grazing in the early spring can cause the following two diseases:
(1) Hypomagnesima: Also known as grasshopper, it mainly occurs in cattle. In the early spring, grazing grasses begin to develop after 1 to 2 weeks. The pathogenesis is: young grass contains less magnesium, contains more potassium and nitrogen, and potassium and nitrogen can affect the absorption of magnesium, thus causing magnesium deficiency in the body.
Symptoms: The incidence of bulls is lighter, and the incidence of heifers is heavier. Suffering from sudden or catching cold as the cause of sudden onset, mild, nervous, panicked, unsteady walking gait. In severe cases, the appetite decreased greatly, convulsions occurred, and the limbs involuntarily stroked after lying down. Cows produce much less milk.
Prevention: 1 In addition to lack of magnesium at the same time lack of calcium, it should make up magnesium and calcium. Bone meal: Add by 1% concentrate. Magnesium Oxide: 50 grams of adult cattle, 10 grams of yaks, added to the concentrate. The above amount is 1 day and it should last for one month. 2 Early spring can't be grazing prematurely.
(2) Siqing disease: This disease mainly occurs in cattle. Causes of morbidity: Lack of grass in winter and spring, spring livestock urgently demand green feed, and premature grazing animals eat a small amount of young grass, which induces a strong appetite, that is, aversion to yellow fodder. Too little grass can not meet the demand, that is, in a long-awaited state. Symptoms: Standing uneasy in the house, often want to go out. In the wild, looking around, I can't see the grass. Feeding feed in winter, attitude is indifferent, food intake is reduced, long-term sensation falls, body is weak, and labor is not tolerated. Prevention: 1 at the bottom of the tongue to know sweet, light bleeding, with a small amount of salt to rub the tongue. 2 Regardless of wild grassland or artificial pasture grassland, do not grazing prematurely in early spring.
2. Hazards to the grassland: In the early spring, the germination of the grass takes place first. It must first rely on the nutrients it has stored. After 12 to 18 days of growth, self-prepared nutrients are depleted and nutrients are absorbed from the soil. If the grazing occurs within 18 days after germination, the delicate seedlings are eaten and cannot be supplemented with nutrients in a timely manner. They cannot grow, resulting in the death or weakening of the grass. The amount of grass produced during the year is greatly reduced or the crop is never produced, seriously affecting the annual grazing. With quick success and instant benefits, you must not take it lightly because you lose a lot of money. It is particularly important to emphasize that goats must absolutely ban grazing, as goats have a habit of "rooting up" and are extremely destructive to grasslands.
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