1. Best offspring is produced by (using) purebreeding and crossbreeding. 2. The (fattening) of cattle is a common practice on farms where beef cattle are bred and corn is raised. 3. The crossbreds obtained by (crossing) many breeds have better gualities. 4. The length of the (fattening) peroiod may vary from two to twelve months.
2. The (fattening) of cattle is a common practice on farms where beef cattle are bred and corn is raised.
3. The crossbreds obtained by (crossing) many breeds have better gualities.
4. The length of the (fattening) peroiod may vary from two to twelve months.