Ruminant animals generally have four stomachs, namely the rumen, reticulum, omasum and abomasum. Each stomach chamber has distinct functions but works closely together to form a complete "pre-processing - fermentation - filtration - digestion" production line.

Ruminating is a unique behavior specific to ruminant animals. In order to quickly evade predators and survive, ruminant animals have developed the habit of quickly feeding and then rumination during the long process of evolution. They swallow the roots, stems, and other food without thorough chewing and choose a safe and comfortable environment for rumination after feeding.

The key work of winter pasture management is to prevent or mitigate the impact of cold stress on the performance of dairy cows, including the temperature control of all aspects of the pasture, pasture management measures, dietary nutrition control, and prevention of frost damage.

Mr. Song, a Beijing Yahe ruminant nutrition expert, explained the delivery and post-natal care of calves (picture description)

Prevent cow abortion, scientific feeding, and ensure the nutritional needs of pregnant cows. Spring grass should not be released; strengthen management and care of pregnant cows and cows during pregnancy; the ground of the cowshed should be non-slip to prevent the pregnant cows from being crushed and collided Do not whip pregnant cows to prevent them from being frightened.

How to calculate the expected date of cows: minus three plus six! The pre-production month is the breeding month minus 3; the pre-production date is the breeding date plus 6.