GENETICAL RESEARCHES ON THE NUMBER OF VERTEBRAE IN THE PIG
GENETICAL RESEARCHES ON THE NUMBER OF VERTEBRAE IN THE PIG
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DOI：
10.2527/jas1948.72233x
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发表时间：
1948-01-01
影响因子：
3.3
通讯作者：
BERGE, S
中科院分区：
文献类型：
--
作者：
BERGE, S
1933 ~ 1941年，在挪威农业大学养猪场对猪椎骨数变异的遗传力进行了研究。为了获得更长的猪，选择椎骨数量较多的育种动物。共检测生猪4,928头。从头到骶骨的椎骨数为27 ~ 30个。这种变异在很大程度上是可遗传的（74%）。回归是严格线性的。因素的数量未知。随着肋骨数量的增加，腰椎的数量减少。后代对公畜的回归系数为0.492，后代对母畜的回归系数为0.479。这个高回归值结合了一个亲本的影响和另一个亲本的部分影响，因为亲本之间的相关性为0.301。子代平均体重的回归。父母消除了大部分这种重复。
The heritability of variations in the number of vertebrae in the pig was investigated at the pig-breeding station of the Agric. College of Norway from 1933 to 1941 All young pigs were X-rayed. The breeding animals were selected for a high number of vertebrae in order to get longer pigs. A total of 4,928 pigs were examined. The number of vertebrae from head to Os sacrum varied from 27 to 30. The variation was to a high degree heritable (74%). The regression was strictly linear. The number of factors is not known. With increasing number of ribs the number of lumbar vertebrae decreased. The regression of offspring on sires was 0.492 and of offspring on dams 0.479. This high regression value combines the effect of one of the parents and part of that of the other, as the correlation between the parents was 0.301. The regression of offspring on the avg. of parents elimin ated most of this duplication.