When we started to build a dairy herd, we mostly used three methods: buying female cows, buying adult cows or buying calves. When buying cattle to raise cattle, it may be empty or pregnant. The choice of these two cows mainly depends on the time when they want to give milk. Under normal circumstances, the bought cows can stay in the herd for about 4 years on average, and most of them will be eliminated before the age of 7.
When buying breeding cattle, there must be a record of the production performance of its mother and the genetic ability of its father.
1, when buying cattle, be sure to check the trial sale of new products and read relevant information. The more detailed the better. Adult cows must have production records and pedigrees.
2. It is also a good method to select and improve the semen of bulls and breed with cows according to their genetic data.
3. The purchased cattle must also take epidemic prevention measures, especially tuberculosis, infectious abortion, leptospirosis, trichomoniasis and mastitis. Even if many diseases can be immunized and strictly quarantined, the newly introduced cattle still need to be quarantined for 30-60 days, and then quarantined again after the quarantine to ensure that they are disease-free before entering a large group.