中国畜牧杂志2017，Vol.53Issue(10)：136-140,5.DOI:10.19556/j.0258-7033.2017-10-136
杂谈猪的遗传改良——正确认识国外遗传评估体系对我国进口种猪的评估
By-talks about Pig Genetic Improvement: Appropriately Understand The Evaluation for Imported Pigs by Foreign Genetic Evaluation System
摘要
Abstract
China has been importing enormous numbers of pigs abroad.However,whether the information offered by the exporters is reliable and whether participating in foreign breeding evaluation systems (NSR,etc.) are controversial issues.Taking one national level core breeding farm as an example which had imported pig from USA and then been a member of NSR,this study made systematic correlation analysis for four traits including "Days to 115kg","Backfat thickness","LoinMuscle Area" and "Predicted Percent Lean",and the results shown that.The breeding values offered by NSR is real,but it is not useful.For the trait of "Days to 115 kg",there seems to be a significant negative correlation between the breeding values estimated by NSR and by our method for imported ones and their progenies,which means that the results of selection based on our methods are probably opposite to the results according to NSR evaluation system.But for the other three traits,the coefficients of relationship are positively significant.However,as the selection index is composed of the sum of the weights of breeding values of "days to 115kg" and other traits,the whole index will be unreliable.Therefore,this is to say that we cannot blindly participate in the international evaluation system.When it comes to the reason of the results,it may be the interaction between genotype and environment.And further analysis is still needed to validate this hypothesis.关键词
引种/杜洛克猪/生长速度/跨国评估Key words
Imported pig breeds/Duroc/Growth rate/International evaluation system分类
农业科技引用本文复制引用
张哲,马裴裴,肖倩,孙浩,张锁宇,张向喆,王起山,潘玉春..杂谈猪的遗传改良——正确认识国外遗传评估体系对我国进口种猪的评估[J].中国畜牧杂志,2017,53(10):136-140,5.基金项目
上海市生猪产业技术体系[沪农科产字(2014～2018)第6号] （2014～2018）
浙江省地方猪种配套系选育与产业化—基于金华猪的配套系选育(2016C02054-2) （2016C02054-2）
