What adverse effects will a single breed of livestock have on grassland environment?

First, the variety of livestock is single, and the palatable plants are over-eaten, which causes a chain reaction and destroys the ecological balance of grassland.

Different breeds of livestock have different food preferences. A single breed of livestock is only interested in certain delicious grasses and their specific parts, such as stems, young leaves and roots. They are not interested in other kinds of grass or parts, so it will lead to the decrease of palatable grass year by year, while other non-palatable grass will grow rapidly, which will lead to a chain reaction, because palatable grass is at a competitive disadvantage, not only palatable grass will be gradually eliminated, but also the carrying capacity of grassland itself for such livestock will gradually decrease.

Second, the diversification of animal husbandry varieties can reduce the destruction of grassland by animal husbandry.

As mentioned above, because different kinds of animals have different food preferences, it can prevent a certain plant from being eaten excessively. In addition, the diversity of livestock breeds can reduce the incidence and harm of livestock diseases to some extent. At the same time, the feces of various animals can balance the nutrients in the grassland and make various plants in the grassland grow better.

Three, according to the principle of "balance between grass and livestock", the grassland ecosystem should be rationally utilized and protected.

Strictly control the carrying capacity of grassland, maintain the diversity of livestock varieties, follow the principle of "balance between grass and livestock", engage in ecological animal husbandry and efficient animal husbandry, and resolutely resist the practice of sacrificing ecology for temporary efficiency. Grassland animal husbandry should adopt advanced grazing system, select various excellent livestock breeds, improve reproductive survival rate, develop seasonal animal husbandry, speed up herd turnover, and achieve a high degree of unity of environmental protection and economic benefits.

The practice of rotational grazing is to divide the grassland into several communities according to the grass yield and the size of the herd, graze in each community for a certain number of days, and graze in these communities in turn. Rotation grazing in different areas can make livestock eat pasture evenly and get enough growth time, which is beneficial to the recovery of pasture. In addition, the implementation of rotational grazing can also narrow the range of livestock activities, reduce the trampling of pasture, reduce the spread of parasites, reduce the energy consumption of livestock, and be conducive to livestock fattening.