1. The principle of similarity of ecological conditions: Each species has its own ecological characteristics. Therefore, when introducing, it should consider whether the ecological environment, natural geography and natural climatic conditions of each species origin and the place of introduction are similar, and there are plans and purposes. Select good livestock and poultry that can adapt to the local ecological environment.
2. Adaptability evaluation principle of varieties: When introducing a large number of varieties, adaptability observations of the varieties should be carried out to prove that their economic value and breeding value are good, and they can adapt to local natural conditions and feeding and management conditions before introducing a large number of species.
3. The principle of social and economic development needs: Careful introduction should be based on changes in social development and market demand. The feasibility and development prospects of the proposed species should be comprehensively examined in terms of overall benefits, animal husbandry development planning, market size, and ecological conditions. The introduction from abroad must conform to the provisions of GB16549, and the introduction of varieties from outside the province should meet the requirements of the “Overall Plan for the Regional Distribution of Livestock and Poultry Varieties in Qinghai Province†and the “Administrative Measures for the Breeding of Livestock and Poultry in Qinghai Province (Provisional)â€.
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