本文選題：豬 + 關(guān)聯(lián)率��； 參考：《畜牧獸醫(yī)學(xué)報》2017年09期

【摘要】：旨在分析我國杜洛克、長白、大白豬3個主流豬品種的場間遺傳聯(lián)系情況,為全國或區(qū)域性豬聯(lián)合遺傳評估和聯(lián)合育種奠定基礎(chǔ)。本研究采用關(guān)聯(lián)率(Connectedness rating,CR)方法,利用國家種豬數(shù)據(jù)庫杜洛克、長白和大白豬達100kg體重日齡性狀的514 226、924 717和2 031 688條數(shù)據(jù),計算95家國家生豬核心育種場3個品種2011-2016年場間的關(guān)聯(lián)率。通過聚類分析,將每個品種劃分為若干區(qū)域性聯(lián)合遺傳評估組。結(jié)果表明,我國杜洛克、長白和大白豬場間關(guān)聯(lián)率逐年上升,平均關(guān)聯(lián)率從2011年的0.04%、0.06%和0.06%,分別提高至2016年的0.32%、0.43%和0.44%;我國整體場間遺傳聯(lián)系偏低,大部分場間無遺傳聯(lián)系。但分別存在3、2、4個局部遺傳評估聯(lián)合體,可以進行聯(lián)合遺傳評估。其中,杜洛克豬3個局部聯(lián)合體的平均關(guān)聯(lián)率分別為1.89%、1.05%、1.58%,分別包括16、7、8個場;長白豬2個局部聯(lián)合體的平均關(guān)聯(lián)率分別為3.53%、1.56%,包括14和9個場;大白豬的局部聯(lián)合體平均關(guān)聯(lián)率為2.79%、1.01%、1.37%、1.23%,包括15、6、5、4個場;3個品種局部聯(lián)合體的場數(shù)占核心場數(shù)的比例分別為35.1%、24.5%和31.6%。目前進行大規(guī)模的跨場聯(lián)合評估還不可行,然而可以進行局部跨場聯(lián)合評估。場間遺傳交流、區(qū)域性公豬站建設(shè)、中心測定站和規(guī)范引種豬系譜登記等措施有助于增強場間聯(lián)系。
[Abstract]:The purpose of this paper is to analyze the genetic linkage among Duroc, Landrace and Big White pig breeds in China, and to lay a foundation for national or regional joint genetic assessment and breeding of pigs. In this study, the method of correlation rate Connectedness rating (CRR) was used to use 514 226924 717 and 2 031 688 data of Duroc, Landrace and White pigs to reach 100kg body weight day traits in the national breeding pig database. The correlation rates between the three breeds of 95 national pig breeding farms in 2011-2016 were calculated. By cluster analysis, each variety was divided into several regional joint genetic assessment groups. The results showed that the correlation rate among Duroc, Landrace and White pig farms increased year by year, and the average correlation rate increased from 0.04% and 0.06% in 2011 to 0.32% and 0.44% in 2016, respectively. However, there are 3 or 4 local genetic assessment consortia, which can be used for joint genetic assessment. Among them, the average correlation rate of three local consortia in Duroc pigs was 1.891.05 and 1.58, including 1678 and 8 farms, respectively, and the average correlation rates of the two local consortia in Landrace pigs were 3.53 and 1.56, including 14 and 9 farms, respectively. The average correlation rate of local association in big white pigs was 2.79 and 1.371.371.23, including 150.66 and 54, respectively, and the proportion of the number of local combinations of three breeds to the number of core fields was 35.124.5% and 31.6%, respectively. At present, it is not feasible to carry out large scale cross-field joint assessment, however, it is possible to carry out local cross-field joint assessment. Genetic exchanges between farms, construction of regional boar stations, central testing stations and standardized registration of pig pedigree are helpful to strengthen the relationship between farms.
【作者單位】： 中國農(nóng)業(yè)大學(xué)動物科技學(xué)院畜禽育種國家工程實驗室農(nóng)業(yè)部動物遺傳育種與繁殖重點實驗室;全國畜牧總站;
【基金】：基金項目:國家生豬產(chǎn)業(yè)技術(shù)體系(CARS-36)
【分類號】：S828.2
，

本文編號：1854834