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Filtering by: Alternative title ssim Progress report no. 16 Remove constraint Alternative title ssim: Progress report no. 16 Advisor Bogart, Ralph Remove constraint Advisor: Bogart, Ralph

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  • Effects of radiation on selection progress in mice

    Creator:
    Womack, James Ernest
    Abstract:
    The effects of x-irradiation on quantitative genetic traits was investigated by comparing the response of irradiated mice to selection for litter size and 28-day weight with the response to selection for the same two traits in non-irradiated lines. Irradiated lines were maintained at three levels of x-irradiation, 25 r, 50...
    Resource Type:
    Dissertation
    Full Text:
    Effects of Radiation on Selection Progress in Mice AN

  • Effects of radiation on selection progress in mice

    Creator:
    Womack, James Ernest
    Abstract:
    The effects of x-irradiation on quantitative genetic traits was investigated by comparing the response of irradiated mice to selection for litter size and 28-day weight with the response to selection for the same two traits in non-irradiated lines. Irradiated lines were maintained at three levels of x-irradiation, 25 r, 50...
    Resource Type:
    Dissertation
    Full Text:
    Effects of Radiation on Selection Progress in Mice AN

  • Hormonal stimulation of breeding activity in different genetic groups of ewe lambs

    Creator:
    West, Dennis Errol, 1942-
    Abstract:
    An investigation of the effects of exogenous gonadotropic treatments on fertility of various genetic groups of ewe lambs were run over a six-year period. Since hormonal treatments varied and the experimental animals were different from one breeding season to the next, each year comprised a separate study. Hormone treatment included...
    Resource Type:
    Dissertation
    Full Text:
    Treated No. of ewes 18 16 34 No. of ewes lambing 7 3 10 No. of lambs born 8 5 13 Percent of ewes

  • Influence of chelating agents on cytological exchanges and genetic recombination in Zea mays L.

    Creator:
    Jones, Donald Dean
    Abstract:
    The present investigation with the chromosomes of Zea mays was conducted to determine: (1) the effects of chelating agents on the process of cytological exchange, and (2) the effects of chelating agents on genetic recombination. To ascertain the influence of chelating agents on cytological exchange, four known heterozygolis paracentric inversion...
    Resource Type:
    Dissertation
    Full Text:
    DOCTOR OF PHILOSOPHY (Name) (Major) in GENETICS presented on August 16, 1971 (Major) (Date) Title: THE

  • Hematological study of genetically different lines of growing beef cattle

    Creator:
    Bhannasiri, Tim
    Resource Type:
    Dissertation
    Full Text:
    Redacted (or privacy Dean of Graduate School Date thesis is presented Decenther 16, 19S9 Typed by Ruth

  • Effectiveness of selection for productive characteristics in developing the Montana no. I hogs

    Creator:
    McEwen, Wesley Charles
    Abstract:
    One of the most important productive characteristics of hogs is reproductive efficiency. Reproductive efficiency is best measured by litter size at weaning. Litter size at birth and weight of the pigs at birth are among the most important factors affecting litter size at weaning. It has been demonstrated that less...
    Resource Type:
    Masters Thesis
    Full Text:
    in Developing the Montant No. 1 Hogs AN ASTFACT OF TI TEIS OF p es1ey Charles Mcwen For the M

  • Effectiveness of index and elite selection methods

    Creator:
    Douglass, Larry W.
    Abstract:
    Mice were used to compare the index and elite selection methods for simultaneous selection of four traits. Selection was for litter size, birth weight, weaning weight and post-weaning gain. Progress was evaluated by examining total phenotypic merit. The standard deviations from the cycle mean for the four traits were summed...
    Resource Type:
    Dissertation
    Full Text:
    , weaning weight and post-weaning gain. Progress was evaluated by examining total phenotypic merit. The

  • Effectiveness of selection for gains in body weight in beef cattle

    Creator:
    Hitchcock, Glen Henry
    Abstract:
    Research has yielded valuable information about the inheritance of body weight in many mammals. The results with one species may not be directly applicable to another species, but since the results do not contradict genetic theory, one must assume that the same general rules apply to all species. When the...
    Resource Type:
    Masters Thesis
    Full Text:
    characters. High heritabilities allow rapid progress with mass selection on individual merit, whereas, low

  • Genetic polymorphism of sheep hemoglobin

    Creator:
    Templeton, Joe Wayne, 1941-
    Abstract:
    Five breeds of sheep (Columbia, Targhee, Rambouillet, Lincoln, and Suffolk) were found to possess two hemoglobin types (Hb. A and Hb. B) when their hemoglobins were examined by disc gel electrophoresis. The hemoglobin alleles proved to be co-dominant. Three of the breeds (Columbia, Targhee, and Rambouillet) were maintained at altitudes...
    Resource Type:
    Dissertation
    Full Text:
    feet above sea level. These four breeds had a frequency of Hb. A of 16% or greater. The Suffolk flock

  • Performance of three inbred lines of Herford cattle and their linecrosses

    Creator:
    Munji, Marcus Tebid
    Abstract:
    Three inbred and relatively unrelated lines of Hereford cattle (1. Lionheart, 2. Prince, and 3. David) developed at the Corvallis branch of the Oregon Agricultural Experiment Station as part of the W-1 project of the Western States were crossed annually from 1963 through 1965 inclusive. Data on 137 inbred and...
    Resource Type:
    Masters Thesis
    Full Text:
    estimated at 0. 52. Lehmann, 16 et al. (1961) found no correlation between growth rate and type. Knapp