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  • 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

  • Genetics of sheep transferrins as determined by disc electrophoresis

    Creator:
    Nix, Carroll Eugene
    Abstract:
    A total of 902 plasma samples from the Rambouillet, Targhee, Columbia, Lincoln, and Suffolk breeds of sheep were analyzed for transferrin type by disc electrophoresis. Six transferrin types, Tf[superscript A], Tf[superscript B], Tf[superscript C], Tf[superscript p], Tf[superscript E], and Tf[superscript P], were found in the Rambouillet, Targhee, and Columbia breeds...
    Resource Type:
    Dissertation
    Full Text:
    are inherited as co-dominant autosomal allelic genes. No evidence was found to support a pre- vious

  • Comparative values of liver nicotinamide nucleotide coenzymes, endocrine glands, and their relationships with production traits of diallel crossed beef bulls

    Creator:
    Anwar-Afghan, Mohammad
    Abstract:
    This investigation for the first time reports information on the correlation of various forms and ratios of nicotinamide nucleotide coenzymes in the liver tissue and endocrine glands weight with various production traits. Fifty-five inbred and line cross beef bulls raised under standard management conditions and slaughtered at 1000 lbs. body...
    Resource Type:
    Dissertation
    Full Text:
    no report on these coenzymes in beef cattle. One of the reasons may be the lack of experimental

  • Certain physiological and pharmacological effects of radiation on rabbits

    Creator:
    Wagelie, Edwin Gan
    Abstract:
    Data were taken, following irradiation exposure to 100r and 300r cumulative dose, on 89 rabbits of three breeds that vary greatly in body size. Hematological, intestinal motility, and ear vascularity examinations were performed. Least square estimates have been obtained and an analysis of variance has been conducted in order estimate...
    Resource Type:
    Dissertation
    Full Text:
    author obtained evidence of renal insufficiency in each of six cases of gout, al- though no clinical

  • Serum T₄ and liver NAD and NADP as performance indicators in beef cattle

    Creator:
    Brokaw, Bryan Edward
    Abstract:
    The relationships of serum T₄ (thyroxine) levels and liver nicotinamide nucleotide coenzyme (NAD and NADP) levels with production of traits of beef cattle were investigated at both weaning (182 kg) and following performance testing (363 kg). In addition, the value of these parameters as selection criteria for improved performance was...
    Resource Type:
    Dissertation
    Full Text:
    present in excess over NADH and NADP+ respectively. No significant differences in coenzyme concentrations

  • 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:
    homozygosity as inbreeding exceeded 35%. There were no significant differences among the means of pro

  • The relationship between x-ray induced teratogeny and chromosome aberrations in golden hamster embryos

    Creator:
    Jones, William Elvin
    Abstract:
    The relationship between x-ray induced chromosome aberrations and x-ray induced embryonic abnormalities was studied. Golden hamsters were irradiated during four stages of gestation: the blastocyst stage, 4.5 days post-copulation; the primitive streak stage, 6.5 days post-copulation; the organogenesis stage, 9.5 days post-copulation; and the period of fetal growth, 11.5 days...
    Resource Type:
    Dissertation
    Full Text:
    responsible for the embryonic abnormalities but there is no correlation between the numbers of chromosome

  • 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:
    other cases no such relationship was observed. The study may provide valuable clues as to the specific

  • Response of scorbutic guinea pigs to ascorbic acid and adrenocorticotropic hormone (ACTH)

    Creator:
    Riker, Joseph Thaddeus III
    Abstract:
    Thirty-six female guinea pigs were placed on a scorbutogenic diet for 14 days and then divided into groups of four. Three groups received adrenocorticotropic hormone (ACTH) with each group given 10, 20, or 40 units. Three groups each received 50 mg of ascorbic acid and three groups received 50 mg...
    Resource Type:
    Masters Thesis
    Full Text:
    alone there is no difference between the tirne intervaLs, but there is a significant differenc. (p

  • 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:
    , histological examination of the reproductive tracts of treated and control ewe lambs were made. No differences