The objective of this study was to define desired genetic gains from economically important traits of Pacific white shrimp (Litopenaeus vannamei) using participatory approaches. Two questionnaires were sent out to 100 Pacific white shrimp farmers in all five Iranian shrimp farming provinces. Questionnaire A (Q-A) includes management factors and farming environments. Moreover, in this questionnaire, farmers were asked to rank the fourth most important traits in shrimp among 10 economic traits in the list for genetic improvement. In questionnaire B (Q-B), priorities of the four traits with the highest value were obtained using pairwise comparison. The results showed that the four most important traits were white spot syndrome virus resistance (WSSV), growth rate before 4 months (GR), acute hepatopancreatic necrosis disease resistance (AHPND), and female total weight at ablation (FTW). Medians of the best individual preference values were WSSV (0.222), GR (0.173), AHPND (0.157), and FTW (0.053). Most disagreements were found between the social group preference values in the commercial products and water salinity categories. Desired genetic gains were 1.71%, 1.57%, 0.53% and 0.31% for GR, AHPND, WSSV and FTW, respectively. This study highlighted that despite environmental and management differences, participatory approaches can achieve desired genetic results for Pacific white shrimp breeding programme.

中文翻译：

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使用参与式方法确定太平洋白虾（Litopenaeus vannamei）育种目标所需的遗传增益

本研究的目的是利用参与式方法，从太平洋白虾（Litopenaeus vannamei）经济重要性状中确定所需的遗传收益。向伊朗所有五个养虾省份的 100 名太平洋白虾养殖户发出了两份调查问卷。问卷 A (QA) 包括管理因素和农业环境。此外，在这份调查问卷中，农民被要求将虾的10个最重要的经济性状中的第四个最重要的性状排在遗传改良列表中。在问卷B（QB）中，通过成对比较获得了价值最高的四个性状的优先级。结果显示，四个最重要的性状是白斑综合征病毒抗性（WSSV）、4个月前的生长率（GR）、急性肝胰腺坏死病抗性（AHPND）和雌性消融时总重（FTW）。最佳个人偏好值的中位数为 WSSV (0.222)、GR (0.173)、AHPND (0.157) 和 FTW (0.053)。大多数分歧出现在商业产品和水盐度类别的社会群体偏好值之间。GR、AHPND、WSSV 和 FTW 的期望遗传增益分别为 1.71%、1.57%、0.53% 和 0.31%。这项研究强调，尽管环境和管理存在差异，但参与式方法可以实现太平洋白虾育种计划所需的遗传结果。