Develop breeding indicators for the herd. To prepare a breeding plan, first determine the breeding index. The ideal reproduction rate should be 100%, and the calving interval is 12 months, but this is not easy to do. Therefore, in the actual production, the reproduction rate is not less than 85%, and the calving interval does not exceed 13 months. Develop breeding and breeding programs. The herd breeding plan is a measure to enable the cows to be mated and delivered at the desired time, and it is also an important basis for preparing the herd turnover plan. The preparation of mating and delivery plans cannot be based solely on the laws of natural production, but on the basis of a comprehensive study of the law of production and economic requirements of cattle and the selection of suitable varieties, based on the age at start of breeding, the period of pregnancy, the interval between calving, and the direction of production. Conditions such as production tasks, feed supply, livestock facilities, and feeding management levels, and determining the time and number of large-scale mating and delivery of cattle can be used to prepare mating and delivery programs. The reproductive characteristics of cows are sporadic mating and childbirth throughout the year, with no obvious seasonal features. The so-called control of calving by plan is to arrange the cow's delivery time to the most suitable season for milk production, which will help improve production performance. Electronic Door Lock,Tower Base Station Electronic Locks,Electronic Locking System,Electronic Door Locking System Ningbo Hengchieh Locking Technology Co., Ltd. , https://www.hengchieh.com