The ventilation condition of the cowshed has an important influence on the growth and development of cattle. A good ventilation environment is very beneficial to the growth and development of cattle.Therefore, higher requirements are put forward for the cowshed. In order to have better ventilation and ventilation environment for the cowshed, the cowshed fan must be used for ven...

Chicken is the world's largest meat production and consumption product, and about 70% of the world's chicken comes from white-feathered broilers. Chicken is my country's second largest meat product, and my country's chicken mainly comes from white-feathered broilers and yellow-feathered broilers. White-feathered broilers contribute about 45% to my country's...

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