Direct and Correlated Responses to Multitrait, Divergent Selection for Immunocompetence
نویسندگان
چکیده
منابع مشابه
Differences in major histocompatibility complex frequencies after multitrait, divergent selection for immunocompetence.
White Leghorn chickens from lines selected for four immune-response traits (IR lines) were serotyped for B system alloantigens characterizing the haplotypes and genotypes to examine the effect of divergent selection for multitrait immunocompetence on MHC haplotype and genotype frequencies. The selected lines were derived from the Ottawa Strain 7. The selection index included four immunocompeten...
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The objective of this study was to evaluate the genetic response for a divergent selection experiment on intramuscular fat (IMF) content and to estimate the correlated response in carcass and meat quality traits. Data from two generation of selection were used in this study. The base population was composed of 13 males and 83 females. High (H) and Low (L) lines had 8 males and approximately 40 ...
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Divergent selection for serum cholesterol concentration on d 56 was practiced in a four-breed, composite population for three generations. High and Low lines, representing high and low levels of serum cholesterol, respectively, were each maintained with approximately 10 males and 25 females per generation. Pigs from a contemporary Control line were evaluated only in the last generation. In the ...
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Hemolymph juvenile hormone esterase (JHE) activity on the third day of the last stadium in the cricket, Gryllus assirnilis, exhibited a significant response to selection in each of six replicate lines. Mean realized heritability was 0.26 t 0.04. The response was due to changes in whole-organism enzyme activity as well as to changes in the proportion of enzyme allocated to the hemolymph compartm...
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Data from a selection experiment for growth carried out in Brazil were analyzed in order to evaluate the direct responses on yearling weight (YW) and the correlated responses on the size and reproduction traits of cows. The experiment was started in 1976, and in 1980 three lines of Nelore cattle were established: selection (NeS), traditional (NeT), both selected for higher YW, and control (NeC)...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1994
ISSN: 0032-5791
DOI: 10.3382/ps.0730018