Index Catalog // ScholarsArchive@OSU

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:: char e of major Redacted for Privacy J f Department o t) Animal Science Redacted for Privacy Dean

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:: gaining ability whi le the older cows were not. !!!! Influence 2.f.. ~~ Weaning Weights The weaning

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:: privacyAbstract approved: D14'. :Ralph Bogart An F 1 population resulting from mating pygmy and normal goats

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

Actual and predicted response to selection on maternally influenced traits in the mouse

Creator:: Lind, Ronald Egnard
Abstract:: An experiment was conducted to determine if selection from standardized litters would be effective in separating lines of mice selected for increased and decreased litter weight at 14 days of age, and if response to selection on this maternally influenced trait could be accurately predicted. Data were collected on litter...
Resource Type:: Dissertation
Full Text:: committee members, Dr. Ralph Bogart, Dr. Rodney V. Frakes, Dr. F. L. Hisaw, Dr. Roger G. Petersen, Dr

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

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:: members Dr, Rod V. Frakes, Fredrick L. Hisaw, Jr. and W. R. Furtick for the time and competent advice

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:: Beef Cattle Breeding Project, W -1. The inbred bulls came from four inbred lines. Three of these

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:: W-1 project of the Western States were crossed annually from 1963 through 1965 inclusive. Data on

Hematological study of genetically different lines of growing beef cattle

Creator:: Bhannasiri, Tim
Resource Type:: Dissertation
Full Text:: . Arscott, Dr. Graham I. Alexander, Dr. Robert W. Mason, arid Dr. Samuel W. Sabin for their advice

Heart rate patterns in beef cattle

Creator:: Ratarasarn, Sucheep
Resource Type:: Dissertation
Full Text:: from Test Condition . . . . . . . . . . . . . . 72 TABLE OF COET TF2TS ( continued) F ao The

Chemical and cellular constituents in the blood of genetically different lines of growing beef cattle

Creator:: Price, Donald Austin
Resource Type:: Dissertation
Full Text:: PHILOSOPHY June 1958 rF?f,OYEDT Redacted for Privacy of fnbrl In Shargo of trjor Redacted for

The effect of levels of inbreeding of dam and offspring upon performance of purebred suffolk lambs

Creator:: England, Noah Clinton
Resource Type:: Masters Thesis
Full Text:: Chairman of School Guate Committee Redacted f& privacy Dean of Graduate School Date thesis is

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:: : Redacted for privacy Pr'ofessortrneritus of ima,1 etics in charge of major Redacted for privacy Head ((f

The comparison of two methods of evaluating inheritance of milk production of dairy sires

Creator:: Srinives, Supote
Abstract:: The production records used were all converted to a comparable based, 305 day lactation period, two times a day milking, and mature equivalent (305 days-2-x-ME) of 71 cows from four Holstein bulls and 59 cows from four Jersey bulls were used for the study. The Equal Parent Index, Regression Index...
Resource Type:: Masters Thesis
Full Text:: Professor F. B. Wolberg, Asso- ciate Professor of Animal Science, for his advice, assistance and

Environmental temperature and the thyroid gland involvement in fertility of male rabbits

Creator:: Oloufa, Mohamed Mohamed
Resource Type:: Dissertation
Full Text:: helpful sugestion on the histology and the ztatistical analy$es, Thanks aro due to Dr, Fred. F

Analyses of physical sources of variation in estimated genetic growth parameters in beef cattle

Creator:: Sabin, Samuel Waybright
Resource Type:: Dissertation
Full Text:: tstabliah.a W f;repp cad 4laeh (tO) m about 168 eagrsl or f{vt to al,x 3E*drt pcrLr&l (h9). for progeny

Anesthesia time as a measure of body fat in genetically different groups of lambs

Creator:: Hudson, Frank A., 1923-
Resource Type:: Dissertation
Full Text:: thc rrguLrmcntl f,or thr dcgPtr of DOtrrOA Or PUXLo8or[r &nr 19SB IPIROYtsDr brndry OhrLmm Dru

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:: -iernatocrit. F{enatocrit estimations were made by placing four ml of whole oxalated blood into a 25 ml

Genetic analysis of maternal ability and evaluation of some environmental factors affecting preweaning performance of beef cattle

Creator:: Eftekhari-Shahroudi, Feridoun, 1939-
Resource Type:: Dissertation
Full Text:: for average weaning weight o f calves was 51 lbs. The influence of month of birth was highly

Selection applied, response of traits and combining abilities of inbred lines of beef cattle

Creator:: Hoornbeek, Frank K. (Frank Kent), 1928-
Abstract:: The investigations reported are based on two studies; the first is concerned with the selection practiced for performance in one inbred Angus and three inbred Hereford lines of cattle, the realized responses, levels of inbreeding and associated performance, and heritabilities of the performance traits. Selection differentials for all performance traits...
Resource Type:: Dissertation
Full Text:: . 8 wp V w it 13. 0- - . 12. 0- f 11.0- R i ' - -6 a - i i i o 10. 0- 6 a 0 z

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:: Station which were provided by Nr. W. A. Sawyer, Superintendent, Dr. F. E. Hubbert Jr., Animal

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:: ml DMSO in 92 ml H2O F DMSO 2%/ 2 ml DMSO in 98 ml EDTA EDTA 0.001 0.001M solution G DMSO 8 %/ 8 ml

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:: Clinical Endocrinology and Metabolisrn l4: 1006-L}zz. t954. 5. Booker, W. M. , R. L. Hayes and F. M. Dent

Sex hormone influence on rate and efficiency gains, endocrines and carcass characteristics of rabbits

Creator:: Rasheed, Ahmed Adel
Resource Type:: Dissertation
Full Text:: appreciation is extnnded to Dr. Hugo Krueger, Professor of Physiology; Professor A. W. Oliver, Associate

Genetic and physiological factors associated with gonadotropic and thyrotropic hormone content of sheep pituitaries

Creator:: Plotka, Edward Dennis
Abstract:: Data were taken from 47 animals consisting of five breeds: Border Cheviot, Columbia, Dorset Horn, Suffolk, and Willamette. Both sexes were represented in each breed, although in unequal numbers. The pituitaries were assayed for gonadotropic and thyrotropic hormone content by injecting a suspension of the macerated gland in saline into...
Resource Type:: Masters Thesis
Full Text:: correlation coefficient >974,,, /G, /3' :w. or of 0.5769 was found between pituitary weight and live

The effects of thiouracil and thyroprotein on growth, wool production and fertility of rams

Creator:: Adams, Charles C.
Resource Type:: Masters Thesis
Full Text:: _ Wr. _TC74'TROL ( \ \ ,) 7c' 7 i) (f 1- R2rO/,ca.ß AøY4Ac/L 7-' w, - _______L_L__

Effect of certain blood enzymes and cellular constituents on growth in different genetic groups of sheep

Creator:: Hutto, Daniel C.
Abstract:: In the present study, five breeds of ewes and their lambs were utilized. The breeds used were: Border Cheviot, Dorset Horn, Columbia, Suffolk and Willamette. In all, 31 ewes and 42 lambs were involved. The blood constituents which were determined for the ewes and lambs were: acid and alkaline phosphatase,...
Resource Type:: Dissertation
Full Text:: phases of this study. Special credit is given to Dr. A. F. Anglemier, Food and Dairy Technology, and

Gonadotropins in pituitaries of inbred and linecross beef bulls and effects of irradiation of mammalian pituitary glands on their ability to induce in vitro ovulation of frog ovaries

Creator:: North, Warren Arthur
Abstract:: There were two studies involved in the thesis research. In the first study, variation in the amount of adenohypophysis gonadotropins among 22 individual beef bulls were investigated. These bulls represented four inbred lines, and six linecrosses. The bulls were raised in the Oregon State University purebred herd. The bulls were...
Resource Type:: Dissertation

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:: on age. The correction equation was CW W - bA f bK; where CW was the corrected weight, W was the

The effect of antibiotics on semen production

Creator:: Bhannasiri, Tim
Resource Type:: Masters Thesis
Full Text:: . Lambert, w. v. and F. F. McKenzie . Artificial insemination in livestock breeding. Washington, u.s

Changes in certain blood constituents associated with growth and development of young beef cattle

Creator:: Williams, Charles Melville
Resource Type:: Dissertation
Full Text:: wishes to thank Dr. F. F. McKenzie, Chairman of the Department of Animal Husbandry, Oregon State

Nonprotein nitrogenous constituents of the blood in relation to rumen development and growth in suckling lambs

Creator:: Jessup, Gordon Lee
Resource Type:: Dissertation
Full Text:: feed intake significantly affected the uric acid content of the blood. MacDonald, et al ' W

Urinary 17-ketosteroids, rate of gain, feed efficiency, and certain blood constituents of beef cattle

Creator:: Nelms, George Estes, 1927-2011
Resource Type:: Dissertation
Full Text:: advice made this stu~y possible, and to Fred F. McKenzie, Head of the Department of Animal Husbandry

Response of genetically different groups of sheep to hill pasture conditions

Creator:: Johnston, Elbert Felton
Resource Type:: Dissertation
Full Text:: gland. Other external f actors such as light, nutrition, etc., influence reproduction but they do ao

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:: . and Mrs. Richard W. Burrill, I owe a special love and gratitude for everything I am and have

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

Relationship of certain blood nitrogen constituents with growth in different genetic groups of sheep

Creator:: Yodseranee, Somchit
Abstract:: Market lamb production usually requires a short period of time. The success of production is therefore dependent upon the growth rate of the lambs which is influenced by milk yields of the ewes. Different growth potentials of animals result from a difference in their utilisation of food. Since metabolism affects...
Resource Type:: Masters Thesis
Full Text:: . Charkey, L. W., Adeline K. Kano and Duane F. Maugham. Effects of fasting on blood non -protein amino

Some genetic and environmental factors affecting "net efficiency" of beef cattle

Creator:: Nelms, George Estes, 1927-2011
Resource Type:: Masters Thesis
Full Text:: between body surface and metabolism. Since the smaller animals have a larger f surtace in proportion

The inheritance of medullation in wool

Creator:: Young, Sing Sze
Resource Type:: Masters Thesis
Full Text:: . Dry, E. W. A possible gene duplication in New Zealand Romney sheep. Nature 154:552. 1944. 5. Dry, F

The response of different strains of mice to administered testosterone and stilbestrol

Creator:: Ray, Earl Elmer
Resource Type:: Dissertation
Full Text:: the requirements for the degree of DOCTOR OF PHILOSOPHY J'une 1959 i {r {r$ E: tt ta}E ll, F

A comparison of metabolism of rapidly and slowly gaining beef cattle

Creator:: MacDonald, Malcolm Allan
Resource Type:: Dissertation
Full Text:: of this thesis, and to Dr. F. F. McKenzie, Chair- man of the Departtient of Animal Husbandry, for

The response of genetically related groups of young beef cattle to administered male hormones

Creator:: Burris, Martin Joe
Resource Type:: Dissertation
Full Text:: trials; and to Dr. Fred F. McKenzie, Chairman of the Department of Animal Husbandry, for his interest

Reproductive performance in the rat in relation to selection for time of puberty

Creator:: Warren, Edward Perrin
Resource Type:: Dissertation
Full Text:: and tor ·his 'encouragement which was frnly given. Aokn01rledgement ia due Dt-. Fred F. JlcKena~e

Genetic parameters of the house fly (Musca domestica Linn.)

Creator:: Konanta, Sugsanguan
Abstract:: Eight strains of housefly, Musca domestica Linn., from two laboratories were intercrossed to form a stock population. Virgin males and females from the stock were collected, and nine sets, each consisting of twelve males mated to five females, were successively done. Pupae weight, adult weight, emergence time and egg production...
Resource Type:: Masters Thesis
Full Text:: design of the experi- ment. Special thanks are also extended to Dr. Frederick W. Plapp, Jr. and the

Relation of rate of gain to feed efficiency in beef cattle

Creator:: Blackwell, Robert Leighton
Resource Type:: Masters Thesis
Full Text:: and for encouragement and inspiration. Ac1owledgement is made to Joe F. Johnson, Assistant

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:: approved: Redacted for Privacy F Ralph BoOrt Five breeds of sheep (Columbia, Targhee, Rambouillet, Lin

Certain genetic and maternal environmental influences on growth rate and body composition of lambs

Creator:: Addleman, Albert Duane
Abstract:: The present study was designed to investigate the relationship of milk production and milk quality to growth rate and certain organ-oleptic measurements of lambs of mutton breeds, Nine mature ewes in their fourth lactation of the Border Cheviot, Dorset Horn, Columbia, Suffolk, and Willamette breeds were acquired making a total...
Resource Type:: Dissertation
Full Text:: , Agricultural Experiment Station Statistician, for his advice relative to the analysis of the data; Drs. f'. L

Estimation of general and specific combining abilities from a diallel cross of three inbred lines of Suffolk sheep

Creator:: Schilling, Prentiss E. (Prentiss Edwin), 1941-
Abstract:: The investigations were based on a complete diallel cross among three inbred lines of Suffolk sheep. Line of sire effects were assumed to be an estimate of general combining ability effects while sire x dam interaction was assumed to be an estimate of specific combining ability. The line of dam...
Resource Type:: Dissertation

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:: - 500 IU PMS, no HCG. f / Treatment - 700 IU PMS, d/ Treatment - 700 IU PMS, no HCG. 800 IU HCG. 32

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

The effect of dietary factors upon the hormone content of the anterior pituitary

Creator:: Nicholson, Hugh Hampson
Resource Type:: Dissertation
Full Text:: in autopsy of the chicks. To Robert W. Mason I wish to express my most sincere appreciation for

Selection for body weight in synthetic monoparous populations of mice

Creator:: Mason, Robert William
Resource Type:: Dissertation
Full Text:: Sex of Offspring Strain of O V A C Ave. Male Parent M F M F M F M F 1? o 24.5 21.0 18.5 18.1 22.0

Some factors affecting rate and economy of gains in beef cattle

Creator:: Dahmen, J. J. (Jerome John), 1919-
Resource Type:: Masters Thesis
Full Text:: and chemicals which influence hormone secretion are available in sufficient quantities f or large

Ova tranfers in sheep and rabbits : studies on material influences and irradiation damage

Creator:: Hunt, William Lynn
Abstract:: The first study utilized ova transfer in sheep and involved hormonal treatments for synchronization of estrus and superovulation in an investigation of crossbred maternal influences on inbred and linecross lambs. Synchronization of estrus in ewes was achieved effectively with either oral progestogen, 6 α-methyl-17α-hydroxy-progesterone acetate (60 mg./ewe/day), or intramuscular injections...
Resource Type:: Dissertation
Full Text:: the Ph. D, in Anirnal Science j-o-" g-'E"T - - f\i-"j-"il- - - - Date Title thesis is presented

Genetic and environmental factors affecting certain productive characters in sheep

Creator:: McLeroy, G. B. (George B.)
Resource Type:: Dissertation
Full Text:: # bhfle rf L* Redacted for Privacy nfrm rd:f l**f grtril* Redacted for Privacy +irr++ * hllf, fllmir

The relationship between serum proteins and growth in beef calves

Creator:: Ampy, Franklin Roosevelt
Resource Type:: Masters Thesis
Full Text:: . w. B. Hardy in 1899 discovered that proteins migrate in an electrical field except at the pH ot

Performance in relation to weaning response in production tested beef cattle

Creator:: Williams, Lloyd Grainger
Resource Type:: Masters Thesis
Full Text:: Columbia, Canada. 1952. 28. Winchester, C. F. and W. A. Hendricks. ergy re- quirements of beef cattle

Genetic and environmental differences in important economic traits of crossbred sheep in spring lamb production

Creator:: De Baca, Roberto Luciano C., 1930-
Resource Type:: Masters Thesis
Full Text:: . Representative rams of the Suffolk and outhdown breeds 30 l4. 14n example o f the more outstanding lambs from

Brain acetylcholinesterase activity at intervals after head irradiation in the rabbit

Creator:: Geel, Stanley Ernest
Resource Type:: Masters Thesis
Full Text:: extended to Dr. L. F. Remmert for his assistance and guidance in perfecting the assay technique

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:: . Nachtwey, D. E. Mattson, and W. E. Kronstad is gratefully acknowledged. The assis- tance of Ron Davis in

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Creator:: Kray, Roger LeRoy
Abstract:: Crossmatings were accomplished among three semi-closed lines within a population of pigs, for the purpose of investigating effects of crossbreeding on reproductive traits. Two of the lines were purebred (Berkshire and Yorkshire); the third line ("Composite") consisted of descendants from inter se matings among offspring of crosses of the Berkshire...
Resource Type:: Dissertation
Full Text:: thesis. Dr. England aided also by organizing adequate assistance at collection of blood samples. Dr. W

Nitrogenous constituents in the blood of four lines of calves

Creator:: Ampy, Franklin Roosevelt
Resource Type:: Dissertation
Full Text:: !f 1 ACKNOWLEDGEMENTS Sincere appreciation is extended to the faculty of Oregon State

The inheritance of growth and carcass characteristics in sheep

Creator:: Busch, Robert Edward
Resource Type:: Dissertation
Full Text:: sheep ABSTRACT THESIS, OF f or the .)"11.0.D (Degree) rate thesis is presented t 22 1062 Data

Genetic and environmental factors influencing appetite in beef cattle and the relation of appetite to rate and efficiency of gain

Creator:: England, Noah Clinton
Resource Type:: Dissertation
Full Text:: to Trimberger (37), preliminary calculatictis indicate a dif- f e ren c e of 10 po r c e :t in

Some genetic and environmental factors affecting weaning weights of lambs

Creator:: Dahmen, J. J. (Jerome John), 1919-
Abstract:: Eight purebred rams (four Suffolk and four Panama) previously selected as high and low on the basis of post-weaning performance feed test of 84 days were used each of three years. Each of the rams was mated to approximately 25 grade Panama ewes each year. One ram and 25 ewes...
Resource Type:: Dissertation
Full Text:: Dean of Graduate School Date thesis is presented October 28, 1965 Typed by Marion F. Palmateer lJ

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:: presented in this thesis. Appreciation is expressed to Dr. Fred F. McKenzie, Chairman, Depart- ment of

Some genetic and environmental factors associated with performance and carcass traits of beef cattle

Creator:: Hoornbeek, Frank K. (Frank Kent), 1928-
Resource Type:: Masters Thesis
Full Text:: cattle, two f which were purebred Angus and one, purebred Hereford. In the two Angus herds there was a

The inheritance of DDT resistance in house flies

Creator:: Johnston, Elbert Felton
Resource Type:: Masters Thesis
Full Text:: females (resistant males X susceptible females) X resistant males 82 167 17 23 F females (susceptible

A clinical and genetic study of tuberous sclerosis

Creator:: Edwards, Thomas Allen
Abstract:: Tuberous sclerosis is a serious heritable human disorder that involves many organ systems. It was first recognized as a disease entity over a century ago. Its mode of transmission in familial cases has been fairly well established to be that of a single gene locus autosomal dominant trait. However, the...
Resource Type:: Masters Thesis
Full Text:: June 1972 APPROVED: Redacted for Privacy Professor d Directo f Genetics Institute in charge of

The serum phosphatases of beef cattle as indices for rate and economy of gains

Creator:: Alexander, Graham Irving
Resource Type:: Masters Thesis
Full Text:: ) Standard Error of the Mean f or all animals 0.26 0.031 -J C,, 16 TABLE 2 (b) Average blood and

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