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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

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:: calves. The directions and potentials along P, QRS and T axes were determined from analysis of leads S

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:: male normal goats decreased significantly (P < .005) while serum GH levels in the male pygmy goats

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

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:: statistically (P <.01) by breed, sex and period, and ewe values were affected (P<.01) by breed, period and

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:: . Endocrinology 4927 55-77 3. 195 l. Stewart, C. P., D. B. Horn and J. S. Robson. The effect of cortisone and

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:: still within the limits for normal animals. Fearon (S, p,399-439) pointed out that the distribution

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:: the pituitaries between the breeds or sexes of the animals. Significant differences (P <.Ol) due to

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:: this study and it is as follows: X.. = p. + A. + L. +A. + M. + L. + S.. + E.. 13 1 j 3 j 1J 1J Where

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:: APPENDIX TABLES (continued) Appendix Table P"S= 13 Grarns of milk protein required to produce one grarrr

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:: the M. S. (Degree) in GENETICS presented on |V\>Ua iHfe, 19 fc? ~7 (Major) \(Date) ' Title

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:: in percent calves born and weaned (P < . 01). All other preweaning and weaning traits did not

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

Creator:: Sabin, Samuel Waybright
Resource Type:: Dissertation
Full Text:: Somrlatlsn qf.rtis$sJ .s? .31 .)1 .25 .18-.E! .[a .OO Brftmacr ($?* p. roIE) (trar p. Il.?El (r?, B

The inheritance of medullation in wool

Creator:: Young, Sing Sze
Resource Type:: Masters Thesis
Full Text:: Means of Ewes Non-rriedullated Medullated Medullated Ewes s* B4 .P. S B R.P. S B R.P. S B R.P

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:: among the Suffolk lambs urea and uric acid concentrations were significantly affected by age (P

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

Creator:: Hudson, Frank A., 1923-
Resource Type:: Dissertation
Full Text:: lnong neny of tben tt la the only broadlng nothod rtodo Lurb ($S, pp,-P;9.-*? ) lrltcr thit thc preo

Brain acetylcholinesterase activity at intervals after head irradiation in the rabbit

Creator:: Geel, Stanley Ernest
Resource Type:: Masters Thesis
Full Text:: . New York, Pergamon Press, 1959. 195 p. 18. Gerstner, H. B. and S. P. Kent. Early effects of head

Some factors affecting rate and economy of gains in beef cattle

Creator:: Dahmen, J. J. (Jerome John), 1919-
Resource Type:: Masters Thesis
Full Text:: ' of Anima]. Hu.sbanclry, for lus guidance which was o genorOEisly given in preparation ±S thesis

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

Creator:: Warren, Edward Perrin
Resource Type:: Dissertation
Full Text:: .$ days, the range being s troa Sl to 1.42 dqa. P':ra.edenberger (h7, p.J49) states that the lriatar

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:: ' this stxIy S refers to season of birth (p. 37). 'i, factors believed to set the limit to 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:: S ource of data . . . . . . . s s s . . . s 9 Methods of analjsis . . . . . . . . . . . . . . . li

Response of genetically different groups of sheep to hill pasture conditions

Creator:: Johnston, Elbert Felton
Resource Type:: Dissertation
Full Text:: (72, p.?8). Izperi» mente in ovartectoìized rt3 s)ow that 1131 upte s.s Increased by a wa11, shozt

The effect of antibiotics on semen production

Creator:: Bhannasiri, Tim
Resource Type:: Masters Thesis
Full Text:: ,aa*p sua rs3ln6&*s*tox ere rathor l*ml"S*d. S*rteLn ptlp'f a&ud$es have bs*n ccu"rdt.eetsd wf.tJe

Selection for body weight in synthetic monoparous populations of mice

Creator:: Mason, Robert William
Resource Type:: Dissertation
Full Text:: . . . . . . . . Forty-five Day Body Weighl;s ot tke Ofrsprin . o 2 ileritablllty . a 39 iiffectiveness of .othor

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:: extract in mg. ) (P-lH in mg. ) 36 2s 14,15 25 33 11 34 64 L2 Rl s .,9 Rs t4 16 R9 15 t7 3 11 13 10

Heart rate patterns in beef cattle

Creator:: Ratarasarn, Sucheep
Resource Type:: Dissertation
Full Text:: (continued) P ae Rectal Temperature and Ambient Temperature . 35 t, s S s s S S S S S s s 5 5 5 5 5

Genetic and environmental factors affecting certain productive characters in sheep

Creator:: McLeroy, G. B. (George B.)
Resource Type:: Dissertation
Full Text:: aclTerae eonditiona and not be too greatly attected. Cooper (s. p. 12) • •1ntaina that one ot the larg

The relationship between serum proteins and growth in beef calves

Creator:: Ampy, Franklin Roosevelt
Resource Type:: Masters Thesis
Full Text:: . s. Brinks, Animal Hu.bandry Research Division, Denver, Colorado, tor his help in performing the

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:: reduction of the a and p 14 unsaturated acyl Co-A to their saturated counterparts. Several early

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:: : Yilgk = P, -= S. 1 = L1 = Gg = SLil = SG.ig = LGlg = the fourteen-day weight of k-th individual

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:: assistance in setting up the analyses for this study, and to Dr. James S. Brinks of the ARS, Denver

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:: daily output of creati nine in the urine is con s tan t for the individual (12, p. 637). Unlike urea

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

Creator:: Ray, Earl Elmer
Resource Type:: Dissertation
Full Text:: depression ot both length and weight or rats . Kochakian (26, P• s•) found testosterone to depress tne

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:: CONCLUSION 47 BIBLIOGRAPHY 5 p LIST OF TABLES Table 1. Means of pupa weight, adult weight

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

Creator:: Nelms, George Estes, 1927-2011
Resource Type:: Masters Thesis
Full Text:: would prObably re quire several years to solve. Mor~~s, !1 !!• (50, p.53) selected two lines of rats

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

Creator:: Adams, Charles C.
Resource Type:: Masters Thesis
Full Text:: VVEM 5 LES. 4 S /2 /6 2ä CHA R T ff A VtR4 6t R41v1 WE/6/-1TS - WFt7r /P/ozS - (5 2

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:: Terrill (22, p.350), 4 E(E + kS) was the formula used to calculate (E + S)~i (k-l)kn the standard

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

Creator:: Rasheed, Ahmed Adel
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . ffect of Castraton , a . , . . . . . TheSexHormones . . . . . . . . . a . . a e a . s i 9 Chemical

Relation of rate of gain to feed efficiency in beef cattle

Creator:: Blackwell, Robert Leighton
Resource Type:: Masters Thesis
Full Text:: and Heifer Calves at 325 Days of Age ........... 29 S Summary of the Analysis of Variance of Live

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

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:: Ritzman and Daven- port (7)4, p.3), as early in the development of formal enetics as 1920, "that methods

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:: 1 20 D D 11 4 12 1 2 15 Two-way- L P 15 10 16 S 4 25 linecrosses L D 9 10 13 5 1 19 P L 7 15 13

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

Creator:: Alexander, Graham Irving
Resource Type:: Masters Thesis
Full Text:: at the U. S. Sheep Expon- mont Station, Dubois, Idaho, the author is indebted for much valuable

The relation of the serum phosphatases to growth of genetically different groups of beef cattle

Creator:: Alexander, Graham Irving
Resource Type:: Dissertation
Full Text:: compared with the David females was the difference s igrli f io ant (P < O 05). Lo significant

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:: Chemical Constituents . . . . , . 9 Central Nervon 3ytem e i s s e s e . 14 Digestive Tract

A comparison of metabolism of rapidly and slowly gaining beef cattle

Creator:: MacDonald, Malcolm Allan
Resource Type:: Dissertation
Full Text:: M. Williams and George E. Neims, Graduate Assistants, Mrs. P. Touchie and John Kaufmes

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

Creator:: Williams, Charles Melville
Resource Type:: Dissertation
Full Text:: . . . . . . . 3 2. Endocrine Glands and Growth . . . . . e s ii MATERIALS A'4D METHODS

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:: \ / \\ \ C7 \ \\ i / / \ / ! 2S I 1 I I - G a i n P e r D a y i n P o u n d s 2.0

Performance in relation to weaning response in production tested beef cattle

Creator:: Williams, Lloyd Grainger
Resource Type:: Masters Thesis
Full Text:: Page Introduc tion . . . . . e s e e e e e s s s e i Review of Literature

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

Creator:: Burris, Martin Joe
Resource Type:: Dissertation
Full Text:: testicular extracts were probably prepared by Brown-Sequard (108, s p.33L) who made extravagant claims

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