Some dairy farmers in the production, often in the 72 to 93 days after the cow's postpartum, due to the heat of identification and cattle disease can not be cured in time, causing dairy cows can not be pregnant in time, so that the calving interval of more than 12 months, and then the number of days of milk production Followed by postponed for more than 305 days. Some dairy farmers also erroneously believe that as long as the cows have milk to be productive, the next calving interval may be extended. They did not realize the hidden losses caused by the extended interval of calving, and it was precisely the low-yield time of dairy cows at the end of lactation, which ignored the peak period after calving. It is estimated that the milk production will decrease by 2.5% for every one-month extension of calving interval. The longer the interval between calving, the greater the loss. When the interval time reaches 20 months, the annual economic efficiency is less than 1,660 yuan. If the milk ratio of low-yielding dairy cows to high-yielding dairy cows is taken into consideration, the economic impact will be even greater. Therefore, to remind all dairy farms (households) to do a good job in the mating of dairy cows, and to accurately diagnose estrus cows in order to prevent leakage. For cows suffering from reproductive diseases, appropriate measures should be taken in time to cure them as soon as possible to ensure normal conditions. The interval between calving and getting better economic benefits. Nitrile Coated Glove,Nitrile Coated Work Gloves,Nitrile Coated Hand Gloves,Nitrile Foam Coated Gloves Jiangsu Hespax Security Co., Ltd , https://www.hespax.com