نتایج جستجو برای: progeny test
تعداد نتایج: 824475 فیلتر نتایج به سال:
Genetic parameters from a second generation (F 2) disconnected diallel progeny test of the New Zealand radiata pine improvement progamme are presented. Heritability estimates of growth and yield traits of 0.2 are similar to progeny test results of the previous generation (F 1). Coefficients of variation for additive genetic and phenotypic variances are also similar between generations. Quality ...
Method of pre-selection using genetic evaluations and reliability for progeny test of Holstein bulls
The objective of this study was to examine the health and meat production of cloned sows and their progenies in order to demonstrate the application of somatic cell cloning to the pig industry. This study compared the growth, reproductive performance, carcass characteristics and meat quality of Landrace cloned sows, F1 progenies and F2 progenies. We measured their body weight, growth rate and f...
We present results of two large scale comparative studies of the genomic basis of resistance of Interior spruce to the white pine weevil. Both volume growth, the main objective of the spruce breeding program in British Columbia, and white pine weevil resistance, are examined. “Interior spruce” is a species complex involving mainly Picea glauca (White spruce) but introgressed with P. engelmannii...
Large progeny test networks are typical for conventional forest tree breeding programmes. The individual progeny tests differ with respect to age, composition and ability to screen the breeding values of the parent trees. Several approaches have been introduced to manage the unbalanced and diverse nature of the data generated by progeny tests. This report presents a procedure for ranking breedi...
Based on the previous observation that a single major autosomal gene controls susceptibility to Friend leukemia virus in mice, an attempt was made to place the gene for susceptibility, FvS, from susceptible DDD mice into the genetic complement of resistant C57BL/6 mice. The backcross system was adopted for this purpose, the heterozygotes being selected by progeny test at each generation. During...
Female spawner infection level and temperature variation through rearing are sufficient to explain in-hatchery mortality rates and infection levels and smolt to adult return ratios (SARs) of progeny of Renibacterium salmoninarum infected spring chinook salmon. Data from published reports and manuscripts regarding a 1988 brood stock segregation experiment that held progeny of highly infected fem...
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