One of the feeding methods is to regularly quantify and less frequently add. Due to long-term conditioned reflexes, the digestive glands begin to secrete before feeding, but feeding too early or too late disrupts the digestive glands of cattle and affects the digestion and absorption of feed; The constant internal environment of the cow's rumen allows the chyme to evenly pass through the digestive tract, thus improving feed utilization and digestibility. The second step is to gradually change the feed. It takes 20 to 30 days for the bacteria to form in the rumen of a cow. Once disrupted, it is very difficult to recover. Therefore, it is necessary to gradually change the feed. Cross-over transitions can be used to gradually increase the amount of new feeds added and gradually reduce the amount of feed that is replaced. The general transition time should be more than 10 days. The third is to screen the feed to prevent foreign matter from mixing in. The fine and rough feeds fed to cattle should be screened with a cleaning device with magnets to remove foreign materials such as iron wire and nails to avoid trauma to the reticulum and pericardium. Reasonably arranging feeding times and order Generally, the method of “coarse, fine, first, wet, first and then drink†is adopted in the feeding sequence of cattle; the number of feedings of dairy cows should generally be consistent with the number of milking, and Dairy cows with a milk volume of 3000-4000 kg can be fed twice a day, and cows with a higher milk yield can be fed three times a day. Providing sufficient drinking water is very important for cows. Some farmers believe that the limited water supply to cattle can increase milk fat percentage, but this practice has no scientific basis. Generally cows with a daily milk output of more than 50 kilograms need 100-150 liters of water per day, and cows will have about 150 liters of ruminal saliva per day and night. Therefore, if the lack of drinking water will inevitably affect the milk production. It is best to install an automatic drinker in the cow house so that the cow can drink at any time. In order to supply cattle warm water in winter, the water temperature is recommended to be better than 12°C.
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