GENOTYPE X ENVIRONMENT INTERACTIONS IN PIG BREEDING PROGRAMS .1. CENTRAL TEST
GENOTYPE X ENVIRONMENT INTERACTIONS IN PIG BREEDING PROGRAMS .1. CENTRAL TEST
复制标题
DOI：
10.1016/0301-6226(86)90015-1
复制
发表时间：
1986-06-01
期刊：
影响因子：
--
通讯作者：
MERKS, JWM
中科院分区：
文献类型：
--
作者：
MERKS, JWM
在系列的第一篇论文中，对荷兰中央测试结果进行了检查。环境相互作用（G。Times。E）和数据进一步用于估计在繁殖计划的不同环境中使用的各种生长和car体质量评估之间的遗传相关性。 g。时间。猪育种程序中的E概述为在育种程序的不同水平，甚至在一个水平的不同环境中（例如牛群）中表达不同表型的基因型。在大多数关于g的研究中。 e，在不同环境中测得的相似性状之间对遗传相关的期望已被认为是一个。在这项研究中，在中央测试的猪上测得的相似性状之间的估计相关性表明，期望应该较小，尤其是对于car体特征。通常用于农场测试的car体背脂质厚度（CB）与超声反向脂肪厚度（UB）的遗传相关性分别为0.61和0.57。在商业肥大中使用的UB与反脂肪类别的相关性为0.25和0.42。 HAM + Liin％与类型类别的遗传相关性为0.60和0.94。在未来的g。时间分析中。 e应考虑特征的遗传背景的这些差异。基因型。时间。批处理和基因型。研究性相互作用的日常增益和饲料转化率。找不到明显的相互作用。 但是，对于每天到达车站和测试结束之间的每日增益，以及测试结束时年龄的重量，基因型。时间。批处理相互作用是显着的（p <0.05）。讨论了这些相互作用的可能原因。对于屠宰特征基因型。月相互作用并不重要。
In this first paper of a series, Dutch central test results are examined for genotype .times. environment interaction (G .times. E) and the data are further used to estimate genetic correlations between the various evaluations of growth and carcass quality, as used in the distinct environments of the breeding programme. G .times. E in pig breeding programmes is outlined as genotypes expressing different phenotypes in the distinct levels of the breeding programme or even in different environments within a level (e.g. herds). In most studies on G .times. E, the expectation of genetic correlation between similar traits measured in different environments has been taken to be one. Estimated correlations between similar traits measured on central tested pigs in this study indicate however, that expectations should be smaller, especially for carcass characteristics. Genetic correlations of carcass backfat thickness (CB) with ultrasonic backfat thickness (UB), normally used in on-farm tests, were 0.61 and 0.57 for Dutch Landrace (NL) and Dutch Yorkshire (GY), respectively. Correlations of UB with backfat class, as used in commercial fattening, were 0.25 and 0.42. Genetic correlations of ham + loin % with type class were 0.60 and 0.94. In future analyses of G .times. E these differences in genetic background of the traits should be taken into account. Genotype .times. batch and genotype .times. sex interactions were investigated for daily gain and feed conversion ratio. No significant interactions were found. However, for daily gain between arriving at the station and the end of the test, as well as for weight for age at the end of the test, genotype .times. batch interaction was significant (P < 0.05). The possible causes of these interactions are discussed. For slaughter characteristics genotype .times. month interactions were not of significance.