The purpose of selecting sheep is to select and breed a healthy sheep, so that the production performance of the sheep will increase from generation to generation. The selection of rams is more important than the selection of ewes. As the saying goes: "Ewe is good, a good nest; ram is good, good slope", it shows the importance of ram selection.
The shape choice ram should pay attention to selecting the individual with strong physical and genital development; the ewes should pay attention to selecting the individual with large hindquarters and good breast development. Individuals with cryptorchidism, multiple papillae, and orbital varus should not be selected for retention.
Selection methods Different retention methods are used for different traits. Regarding the properties such as the amount of cut, the quality of wool, and the body weight, regardless of whether the male or female is an individual or not, it is effective to select and retain according to its own performance. However, for the traits of lambing rate, it is not good to select only the effect of leaving a pair of lambs or more lambs. It is better to choose to keep the ewes based on the average number of litters of half-brothers. When multiple traits are selected at the same time, the most important traits should be selected first to determine the individuals selected.
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