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Estimates of combining abilities, heterotic effects and phenotypic correlations among in-bred lines of beef cattle and their line-crosses

Creator:: Humes, Paul Edwin
Abstract:: The investigations were based on a complete diallel cross among three inbred lines of Hereford cattle. Records of Angus calves born during the same period were used to obtain more accurate estimates of environmental effects and to determine breed differences among the various traits included in the study. Estimates of...
Resource Type:: Dissertation
Full Text:: requirements for the degree of Doctor of Philosophy June 1969 APPROVED: Redacted for Privacy Pr ofe s

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:: merit (+ S. E.) for control lines. 4 Population size and the average deviation from the population mean

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:: . Frakes, Donald L. MacDonald, and Morris W. Montgomery are gratefully acknowledged. These men and Drs

An analysis of the response to selection for high and low rate of gain in the mouse, Mus musculus

Creator:: Burrill, Melinda Jane
Abstract:: An experiment was conducted to examine the responses to selection for high and low rate of gain in the mouse under a system whereby inbreeding was maximized. Rate of gain was measured by an index designed to include gains in both the pre- and postweaning periods with the gains in...
Resource Type:: Dissertation
Full Text:: rather than indirectly through a reduction in maternal size, The cause(s) of the reduction were not

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:: appreciation go to Dean W. T. Cooney for his very special interest in the writer's education at O. S. U

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:: scapular lead S-II (pre- scapular position positive and right forelimb negative) were analyzed, The data

Morphology of epididymal spermatozoa from inbred and linecross bulls

Creator:: Turner, H. A.
Abstract:: Data were presented on epididymal spermatozoa from 29 inbred and linecross bulls raised at Oregon State University in connection with the Western Regional Beef Cattle Breeding Project, W-1. The inbred bulls came from four inbred lines. Three of these inbred lines were Herfords and the other line was Angus. The...
Resource Type:: Masters Thesis
Full Text:: . , R. S. Hoyt and R. W. Bratton. Libido, sperm characteristics, sperm output, and fertility of mature

Genetic, environmental and residual maternal influences on cow productivity and growth of calves

Creator:: De Baca, Roberto Luciano C., 1930-
Resource Type:: Dissertation
Full Text:: thesis resulted from discussions with S. W. Sabin, . D. C. Erg]1 aì1 Dr. G. I. Alexander. The ideas

Some genetic and environmental factors influencing the weaning weights of southwestern range cattle

Creator:: Pahnish, O. F. (Otto Floyd), 1920-
Resource Type:: Dissertation
Full Text:: that i s of current interest at weaning time to breeders of beef cattle. The growth curves reported

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:: lower in the Ram- bouillet, Targhee, and Columbia breeds of the U. S. Sheep Experi- ment Station at

ScholarsArchive@OSU

Estimates of combining abilities, heterotic effects and phenotypic correlations among in-bred lines of beef cattle and their line-crosses

Effectiveness of index and elite selection methods

Genetic and physiological relationships of growth hormone and growth in goats

An analysis of the response to selection for high and low rate of gain in the mouse, Mus musculus

Performance of three inbred lines of Herford cattle and their linecrosses

Electrocardiograms and related variables of dwarf beef cattle

Morphology of epididymal spermatozoa from inbred and linecross bulls

Genetic, environmental and residual maternal influences on cow productivity and growth of calves

Some genetic and environmental factors influencing the weaning weights of southwestern range cattle

Genetics of sheep transferrins as determined by disc electrophoresis

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