Chicken breed conservation and breeding group family coding tracing method and application

Abstract

The invention relates to a chicken breed conservation and breeding group family coding tracing method and an application. Individual codes are given to a breed conservation group family. Individual family trees are coded and established. A coding rule comprises the following steps that the rule is formed by A, B and C; one represents a male parent, one represents a female parent and one representsa progeny; two progeny codes are compared; if numbers of the male parent and the female parent are the same, the two progenies are contemporary full sibs; if one number of the male parent and the female parent is the same, the progenies are contemporary half sibs; and if the two numbers of the male parent and the female parent are different, there is no contemporary genetic relationship. In the invention, chicken breed conservation (breeding) group individual coding and family-tree continuous tracing can be realized, a fixed family is not needed, and according to a tracing result, a matchingcombination can be optimized, and an inbreeding level can be reduced. Operation is simple, the method is suitable for coding and family-tree tracing of other livestock and poultry resource breed conservation groups and breeding group individuals, and a high practical value is possessed.

Description

technical field [0001] The invention relates to a family code tracing method of a chicken conservation breeding group and an application thereof, belonging to the technical field of conservation genetics. Background technique [0002] Long-term continuous inbreeding will lead to the decline of individual reproductive performance, physiological activity and adaptability of poultry, which is called inbreeding depression. In the process of protection and breeding of chicken breed resources, the establishment of individual families ( figure 1 ) and trace the individual pedigree, which is the most effective means to avoid the mating of closely related individuals, thereby reducing the level of inbreeding. [0003] At present, the family conservation method adopted by chicken breeding farms (gene banks) and the family selection method adopted by chicken breeding enterprises are to assign a certain range of wing numbers to individuals of each generation. Family number comparison ...

AI Technical Summary

Problems solved by technology

The above-mentioned family individual coding method is relatively easy to implement in the contemporary era to avoid the mating of closely related individuals (full siblings or half siblings). Coefficients and inter-individual kinship coefficients are difficult to implement, especially when the number of families is large (generally, the number of families in the chicken conservation population / breeding group is not less than 30, and the number of hens is more than 300). The workload is heavy, the operation is complicated, and the error rate is high. High, it is difficult to determine the mating combination, so chicken conservation farms (gene banks) and chicken breeding companies generally only avoid closely related individuals (full siblings or half siblings) in the current generation of the conservation (breeding) group, and do not do continuous tracing of multiple generations. This makes it difficult to effectively control the excessive increase in the inbreeding level of the conservation (breeding) group

There is currently no effective solution

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