1. Selection time
The selection of wolfberry should be carried out in a planned and focused manner all year round. It can generally be divided into three stages.
(l) The primary phase is conducted in May-June. After the breeding of adult male ferrets is completed, a primary election is conducted according to the breeding ability, semen quality, and the recovery of body condition. After the weaning of the adult female, a primary election is conducted according to its reproduction, lactation and maternal status. When weaning during weaning, we perform a primary election based on the number of nymphs and their growth and development.
(2) The selection stage was conducted from September to October. According to the depilation, hair replacement, the growth and development of the pups and the recovery of the condition of the adult pupae, a check was conducted on the basis of the primary election. At this time, the number of retained elections will be 20%-25% more than the number of planned species, so that the excess will be eliminated at the time of selection.
(3) The selection phase is conducted in November-December. Eliminating those unsatisfactory individuals on the basis of the election and finally implementing the number of reservations as planned.
When selecting a species for breeding, when the ratio of males to females is 1 to 3 or 1:4, but the population is relatively small, it is appropriate to leave more public funds to prevent the reproductive work from being affected by certain public breeding services. The composition of the species of fleas should be dominated by pupa, and the lack of pupa should be supplemented by cubs. The ratio of adult juveniles to 7 to 3 to 1 to 1 is appropriate, which is conducive to stable production and high yield in the market.
2. Selection method
The selection of alfalfa should be based on the comprehensive indicators of individual quality identification, genealogical identification and post-commercial identification.
(1) Identification of individual quality Grading grading was carried out by focusing on the plush quality of coat color, luster, and density. The plush quality grading standards are shown in Table 17.
The kind of plush quality of the male breed is best grade one, and the grade three should not be left. The quality of the plush of the mother lice should also be secondary.
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