How to distinguish healthy cattle from sick cattle?

(1) Look at healthy eyes. Eyes are bright, bright, clean and moist. The sick cow has dull eyes, drooping eyes, slow reaction, tears and gum. (2) Looking at the ears of healthy cows, the ears tend to be erect and flexible, while the sick cows hang their heads, their ears don't shake, their ears are hot or their tips are cold. (3) The coat of healthy cattle is neat, shiny and elastic. The fur of sick cattle is unkempt and dull. (4) Cattle that do not ruminate start ruminating 30-40 minutes after each feeding, and ruminate 4-6 times a day and night. Rumination of sick cattle is reduced or stopped. (5) Cattle that are active and disease-free can move freely, and most of them lie on their sides when resting, and stand up as soon as people approach. Sick cows have decreased appetite, ruminated, grazed and often fell to the ground, showing various abnormal postures. (6) Cattle manure without disease after defecation is dry and hard, and has no peculiar smell. Urine is clear, colorless or yellowish, and regular. Too much sick steak, loose or dry stool, or even stop, yellow or bloody urine.