尽量取得目标群体的随机抽样。
同时，在江苏省扬州市郊区简单随机抽样49只长江三角洲白山羊作为对照群体。结果表明。
At the same time, 49 Yangtse River Delta White Goats were sampled as contrast population from the suburb of Yangzhou city Jiangsu province by the simple random sampling method.
同时研究表明，系统随机整群抽样是进行黄牛群体遗传变异分析的最适抽样方法。
Also the results showed that the Stratified Random ClusterSampling is an adequate sampling method for the genetic variation analysis of yellow cattle population.
对陕西境内3个山羊群体——陕南白山羊、子午岭东侧山羊及辽宁绒山羊分别进行了遗传资源抽样检测。
Genetic estimation was carried out to three goat populations in shaanxi-liaoning Cashmere goat, East Ziwu mountain goat and Southern Shaanxi White goat.
对陕西境内3个山羊群体——陕南白山羊、子午岭东侧山羊及辽宁绒山羊分别进行了遗传资源抽样检测。
Genetic estimation was carried out to three goat populations in shaanxi-liaoning Cashmere goat, East Ziwu mountain goat and Southern Shaanxi White goat.
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