Animal Breeding and Genomics Centre, Wageningen University, Wageningen, the Netherlands.
J Anim Sci. 2012 Jun;90(6):1766-76. doi: 10.2527/jas.2011-4267. Epub 2011 Dec 16.
Distributing animals from a single breeding program to a global market may not satisfy all producers, as they may differ in market objectives and farming environments. Analytic hierarchy process (AHP) is used to estimate preferences, which can be aggregated to consensus preference values using weighted goal programming (WGP). The aim of this study was to use an AHP-WGP based approach to derive desired genetic gains for rainbow trout breeding and to study whether breeding trait preferences vary depending on commercial products and farming environments. Two questionnaires were sent out. Questionnaire-A (Q-A) was distributed to 178 farmers from 5 continents and used to collect information on commercial products and farming environments. In this questionnaire, farmers were asked to rank the 6 most important traits for genetic improvement from a list of 13 traits. Questionnaire B (Q-B) was sent to all farmers who responded to Q-A (53 in total). For Q-B, preferences of the 6 traits were obtained using pairwise comparison. Preference intensity was given to quantify (in % of a trait mean; G%) the degree to which 1 trait is preferred over the other. Individual preferences, social preferences, and consensus preferences (Con-P) were estimated using AHP and WGP. Desired gains were constructed by multiplying Con-P by G%. The analysis revealed that the 6 most important traits were thermal growth coefficient (TGC), survival (Surv), feed conversion ratio (FCR), condition factor (CF), fillet percentage (FIL%), and late maturation (LMat). Ranking of traits based on average Con-P values were Surv (0.271), FCR (0.246), TGC (0.246), LMat (0.090), FIL% (0.081), and CF (0.067). Corresponding desired genetic gains (in % of trait mean) were 1.63, 1.87, 1.67, 1.29, 0.06, and 0.33%, respectively. The results from Con-P values show that trait preferences may vary for different types of commercial production or farming environments. This study demonstrated that combination of AHP and WGP can be used to derive desired gains for a breeding program and to quantify differences due to variations market demand or production environment.
将单一繁殖计划中的动物分配到全球市场可能无法满足所有生产者的需求,因为他们在市场目标和养殖环境方面可能存在差异。层次分析法(AHP)用于评估偏好,然后使用加权目标规划(WGP)将这些偏好汇总为共识偏好值。本研究旨在使用基于 AHP-WGP 的方法来确定虹鳟鱼繁殖的理想遗传增益,并研究繁殖性状偏好是否因商业产品和养殖环境而异。我们发送了两份问卷。问卷 A(Q-A)分发给来自 5 个大陆的 178 位农民,用于收集商业产品和养殖环境信息。在这份问卷中,农民被要求从 13 个性状中选出 6 个最重要的遗传改良性状进行排序。问卷 B(Q-B)分发给所有回答 Q-A 的农民(共 53 位)。对于 Q-B,使用成对比较获得了 6 个性状的偏好。偏好强度用于量化(性状平均值的百分比;G%)一个性状相对于另一个性状的偏好程度。使用 AHP 和 WGP 估算个体偏好、社会偏好和共识偏好(Con-P)。通过将 Con-P 乘以 G%来构建理想增益。分析结果表明,6 个最重要的性状是热生长系数(TGC)、存活率(Surv)、饲料转化率(FCR)、条件因子(CF)、鱼片百分比(FIL%)和晚期成熟(LMat)。基于平均 Con-P 值对性状进行排序,结果为 surv(0.271)、FCR(0.246)、TGC(0.246)、LMat(0.090)、FIL%(0.081)和 CF(0.067)。相应的理想遗传增益(性状平均值的百分比)分别为 1.63%、1.87%、1.67%、1.29%、0.06%和 0.33%。Con-P 值的结果表明,不同类型的商业生产或养殖环境可能会导致性状偏好的差异。本研究表明,AHP 和 WGP 的结合可用于为繁殖计划获得理想增益,并量化由于市场需求或生产环境的变化而导致的差异。