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  • A morphological, physiological and gentic investigation of the African pygmy goat

    Creator:
    Blanks, George Anthony
    Abstract:
    Six groups of goats were used in the study. These were the normal group (Saanen, French Alpine, and Nubian breeds), 1/4 pygmy group (first backcross to normal), 1/2 pygmy group (F1) 3/4 pygmy group (first backcross to pygmy), 7/8 pygmy group (second backcross to pygmy), and pygmy group0 The mean...
    Resource Type:
    Dissertation

  • Chemical communication and chemoreception in the Dungeness crab, Cancer magister, and the lined shore crab, Pachygrapsus crassipes

    Creator:
    Takahashi, Francis Takao
    Abstract:
    Great importance has been attributed to the visual aspects of sexual communication in semi-terrestrial crabs and although P. crassipes may utilize visual signals, pheromones and chemotactile signals are important in the release of mating behavior. In the subtidal C. magister pheromones seem to mediate both courtship and mating behavior. Visual...
    Resource Type:
    Dissertation
    Full Text:
    , Dr. F. Hisaw, Jr. , Dr. R. Newburgh, and Dr. A. W. Pritchard, for their help and patience. In

  • A comparison of in vivo and in vitro techniques for the evaluation of varying roughage-concentrate rations

    Creator:
    Klett, Ramon Hollis
    Abstract:
    The objective of this study was to compare the total collection (in vivo), nylon bag, and in vitro digestibility techniques under standardized conditions. Twin steers were used simultaneously to measure the digestibility of five rations consisting of the following ratios of alfalfa hay to steamed roller barley: 4:0 (I), 3:1...
    Resource Type:
    Dissertation
    Full Text:
    during my stay at Oregon State University. Dr. F. L. Hisaw Jr. and Dr. P. H. Weswig who so capably

  • Electrocardiograms and related variables of dwarf beef cattle

    Creator:
    Pinjani, Moti, 1939-
    Abstract:
    Electrocardiograms from 12 compressed male (CM), 16 compressed female (CF), ten synthetic compressed female (SCF), nine brachycephalic female (BF), and 15 dolichocephalic female (DF) dwarfs from Davis, California, taken in the scapular lead S-II (prescapular position positive and right forelimb negative) were analyzed, The data on dwarf electrocardiograms were compared...
    Resource Type:
    Dissertation
    Full Text:
    suggestions throughout, contributed to the successful completion of this study. To Drs. F. L. Hisaw and K. J

  • Involvement of formaldehyde in depressed iron absorption in mink and rats fed Pacific hake (Merluccius productus)

    Creator:
    Costley, Gary Edward
    Abstract:
    Inclusion of substantial levels of raw-frozen Pacific hake (Merluccius productus) in diets of ranch-raised mink (Mustela vison) causes a large percentage of animals to develop an abnormal condition termed "cotton fur" (CF), characterized by depressed body weight, microcytic-hypochromic anemia and a failure of under-fur pigmentation. Observations by several groups of...
    Resource Type:
    Dissertation
    Full Text:
    . F. L. Hisaw, P. H. Weswig and J. E. Parker, for the time and effort spent while serving on my

  • Genetic and physiological relationships of growth hormone and growth in goats

    Creator:
    Simms, Danny Dale
    Abstract:
    An F₁ population resulting from mating pygmy and normal goats (local commercial breeds) was crossed to give an F₂ population. Analysis of wither height and body weight indicated that the F₂ population was intermediate between the parental types (pygmy and normal) with little overlap of phenotypic values for body size...
    Resource Type:
    Dissertation
    Full Text:
    the assay procedures. The time and competent advice donated by Drs, Frederick L. Hisaw, Jr. , Rod V

  • Physiological and nutritional interrelationships of mineral elements to growth and reproduction in turkeys

    Creator:
    Egwuatu, Charles Obiajulu
    Abstract:
    Experiments involving poults were conducted with the primary objective of studying the effects of sodium chloride on field rickets. A second objective was to study the effects of mineral elements on reproduction of turkey breeder males and females. Three experiments were conducted with poults. A comparison of added dietary sodium...
    Resource Type:
    Dissertation
    Full Text:
    Department of Agricultural Chemistry and Dr. Fred Hisaw Jr. of the Department of Zoology. My thanks also go

  • Nutritional aspects of artificially feeding captive and wild deer

    Creator:
    Dean, Ronald E.
    Abstract:
    Most of the nutritionally related difficulties of winter feeding deer apparently result from either poor acceptability of artificial rations or digestive disturbances that result from feeding starved animals feeds to which they are not accustomed. Reported in this thesis are studies conducted with both captive and wild deer concerning acceptability...
    Resource Type:
    Dissertation
    Full Text:
    who reviewed my thesis. These individuals were Dr. A. F. Anglemier, , Dr. F. L. Hisaw, Dr. S. E

  • 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:
    Frakes, Frederick L. Hisaw, Jr., D. L. MacDonald and Jesse F. Bone are gratefully acknowledged. These

  • 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:
    appreciated. Gratitude is expressed to committee members Dr. R. R. Becker, Dr. Paul Roberts, Dr. F. L. Hisaw