The early lactation milking method involves scrubbing the breasts with warm water and immediately milking them, with each cow being milked within 8-10 minutes. If the milking time is too long and the physiological reflex activity has passed, the milk will return to the breast and be difficult to squeeze out, reducing milk production and increasing the incidence of mastitis. So in this process, it is necessary to regularly use imported cattle for B-ultrasound examination.

Squeezing the cow immediately after delivery has the following benefits:

1. Promote the release of non esterified fatty acids from the liver into the bloodstream for milk synthesis.

2. It is conducive to the collection of high-quality colostrum, and reduces the incidence rate of milk leakage and mastitis.

3. After milking, cows can reflexively increase their appetite, promote cows to increase their dry matter intake as much as possible, and reduce the incidence rate of the fourth stomach displacement.

4. After squeezing, the mammary gland of the cow needs to be examined by imported cattle B-ultrasound to see if there are any abnormal manifestations on the imported cattle B-ultrasound images.

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