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Comparison Of Methods For The Rapid Detection Of Streptococcus Bovis From Water, Edwin D. Oliver Jan 1974

Comparison Of Methods For The Rapid Detection Of Streptococcus Bovis From Water, Edwin D. Oliver

Electronic Theses and Dissertations

The pollution of water by fecal material presents a health hazard to cities obtaining water from streams and rivers since many pathogenic microorganisms, including the fecal streptococci, are associated with this material. Recent studies have furnished data indicating that the fecal streptococci are more accurate than coliform tests for evaluating the sanitary quality of water. The fecal streptococci are gram-positive cocci found in the intestines of man and animals. They have been further subdivided into the enterococcus and viridans streptococci which contain the Lancefield Group D antigen. The enterococci include Streptococcus faecalis and its varieties, while streptococcus b++ovis and Streptococcus …

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Physiological Responses Of Holstein Steer Calves To Winter Climatic Conditions, Jay A. Runestad Jan 1974

Physiological Responses Of Holstein Steer Calves To Winter Climatic Conditions, Jay A. Runestad

Electronic Theses and Dissertations

When a warm-blooded animal, homeotherm, is subjected to an environment colder than body temperature, according to the physical laws of heat and mass transfer, heat dissipation from the animal will be increased. Left unchecked the body temperature will drop, homeothermia, possibly resulting in death. The animal compensates for this heat loss by increasing heat production and/or reducing heat loss by a number of chemical or physical adjustments. One such adjustment is vasoconstriction, which reduces blood flow to the surface, thereby, reducing the temperature of the skin and extremities, with peripheral temperatures of some homeotherms dropping to slightly above freezing without …

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Storage Quality Measurements Of Two Large Hay Packages, Ronald Eugene Schrempp Jan 1974

Storage Quality Measurements Of Two Large Hay Packages, Ronald Eugene Schrempp

Electronic Theses and Dissertations

Forage evaluation for utilization by ruminants can be made by several methods. The conventional in vivo digestibility trials, in vitro dry matter digestibility methods and a number of chemical component analyses have been tested quite extensively in the last 25 years. The in vivo digestibility trial has been the traditional method for feed evaluation, but performance of such a trial is costly and tedious and the resulting total digestible nutrients or digestible energy values have been criticized as being an incomplete measure-of feed value. There are many laboratory feed analyses methods available today. However, in vitro digestibility data have been …

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Characterization Of A Bovine Parvovirus, Thomas J. Langpap Jan 1974

Characterization Of A Bovine Parvovirus, Thomas J. Langpap

Electronic Theses and Dissertations

Bovine parvovirus has been shown to produce calf scours (40). Although exact figures are unavailable, a sizeable economic loss is suffered annually by South Dakotans as a result of this disease. Bovine parvovirus has been isolated in South Dakota (7). However, the extent of exposure to the virus is unknown. The object of this study is to characterize the South Dakota parvovirus isolate and determine by serological methods the extent of exposure in cattle. A preliminary study to determine the ability of parvovirus to cause abortion in cattle will also be undertaken.

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American Labor Unions: Structure, Conduct, Performance, Lyle Adrian Johnson Jan 1974

American Labor Unions: Structure, Conduct, Performance, Lyle Adrian Johnson

Electronic Theses and Dissertations

Given some specific assumptions, theories have provided specific conclusion concerning unions. This type of theoretical framework, however, provides for a ''narrow" discussion of union activities. General textbooks written about labor unions supply an opposite approach by providing much material dealing with union relationships. A more comprehensive approach, however, may be developed through an analysis of labor unions with industrial organization theories. This type of analysis allows one to see both the forest and the trees. The specific objectives of this research paper are to study: 1. union organizations and their operations 2. antitrust policy toward union structure 3. strike costs …

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Effects Of Fungus-Fermented Soybeans On Broiler Growth And Life Cycle Performance Of Coturnix Quail, Cheong Choo Chah Jan 1974

Effects Of Fungus-Fermented Soybeans On Broiler Growth And Life Cycle Performance Of Coturnix Quail, Cheong Choo Chah

Electronic Theses and Dissertations

Despite the extensive data that have accumulated on the detrimental effect of molds on the growth of farm animals, very little is known as to the beneficial role of fungi in animal feed. Recent studies at South Dakota State University research laboratories revealed, however, that only 164 of 392 strains of Aspergilli were found to be toxic. When the cultures were grown on sterile soybeans or wheat, some of the tested cultures exerted positive effects on growth of chicks and mice. Hence, the investigations reported herein were initiated to obtain further information on those cultures beneficial to chick performance and …

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Quantitative Gene Action And Interrelationships Of Protein Content With Some Metrical Traits Of Oats, Harbans Singh Sraon Jan 1974

Quantitative Gene Action And Interrelationships Of Protein Content With Some Metrical Traits Of Oats, Harbans Singh Sraon

Electronic Theses and Dissertations

The objectives of this study were (a) to determine gene action, heritability and number of effective factors controlling protein content in oats, (b) to investigate the interrelationships of protein content with other agronomic characters, and (c) to evaluate the feasibility of utilizing A. sterilis germplasm in oat breeding projects. Four genetically distinct cultivars with protein content ranging from 15.7 to 26.6 percent were crossed in all possible combinations to make a complete set of diallel crosses. The data suggested additive gene action and partial dominance for protein content. Groat percentage and number of panicles showed overall partial dominance. Yield and …

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A Study Of Oxomolybdenum Chelate Compounds Of Oxidation States (V) And (Iv) When Prepared By Photochemical Reduction Of Oxomolybdenum (Vi) Complexes In Ethanol Under Inert Atmosphere And By Chemical Reduction, Richard Donald Dendinger Jan 1974

A Study Of Oxomolybdenum Chelate Compounds Of Oxidation States (V) And (Iv) When Prepared By Photochemical Reduction Of Oxomolybdenum (Vi) Complexes In Ethanol Under Inert Atmosphere And By Chemical Reduction, Richard Donald Dendinger

Electronic Theses and Dissertations

A photolysis system was designed for meticulous exclusion of oxygen and moisture. Photolyzed ethanol solutions of dioxobis(acetylacetonato)­-molybdenum(VI), Mo02 (acac)2, were studied via preparation of derivatives with several uninegative bidentate ligands (chelH, cysteine was designated cystH2) and pyridine (py). Infrared spectroscopy was a useful tool in identifying these compounds. An oxomolybdenum(IV) compound, MoO(dtc)2 was isolated from the red photolyzed solution when dtc was the N,N-diethyldithiocarbamate ion. Tropolone, 8-hydroxyquinoline, N,N-diethyldithiocarbamate, and cysteine formed products formulated as the dioxo bridged molybdenum(V) compounds, Mo204(che1)2. Acetylacetone, tropolone, 8-Hydroxyquinoline and N,N-diethyldithiocarbamate, formed derivatives formulated …

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A Study Of Attitudes Of South Dakota Residents Toward Selected Aspects Of Hunting, Hunters, And Game Officials, Jerome R. Rosonke Jan 1974

A Study Of Attitudes Of South Dakota Residents Toward Selected Aspects Of Hunting, Hunters, And Game Officials, Jerome R. Rosonke

Electronic Theses and Dissertations

A study of the attitudes of South Dakota residents was made to determine: (1) the attitudes of selected South Dakota residents toward selected aspects of hunting, hunters, and game officials; (2) how these attitudes vary when controlled for selected socioeconomic factors; and (3) what socioeconomic factors help explain the observed variation in attitudes. The unit of analysis was the individual respondent, chosen from the state population. A total of 474 residents were interviewed in order to assess: (1) selected socioeconomic characteristics of the respondent; and (2) the respondent's attitude toward selected aspects of hunting, hunters, and game officials. A seven-point …

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In Vitro And In Vivo Evaluation Of Protecting Whey Protein Concentrate For Ruminants, David Rodriguez Maltos Jan 1974

In Vitro And In Vivo Evaluation Of Protecting Whey Protein Concentrate For Ruminants, David Rodriguez Maltos

Electronic Theses and Dissertations

In experiment I a series of in vitro buffer and rumen fermentation studies were conducted to evaluate protein solubility at pH 6.8 and pH 2.5 (with pepsin) and ammonia production from whey protein concentrates (WPC, 55% protein) treated with 0, .25, .5, 1.0, and 3% formaldehyde; 1, .5, 1.0, 2.0, 3.0, and 6% tannic acid; and 0, 1, 2, and 3 hr of heat treatment at 104 C. Protein solubility and ammonia production from casein treated with 0, .5, 1.0, and 3% formaldehyde and 0, .5, 1.0, and 3% tannic acid were also studied. All levels of formaldehyde treatment of …

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A Study Of Disadvantagement And Migration For Counties In South Dakota: 1960-1970, Marco Montoya Jan 1974

A Study Of Disadvantagement And Migration For Counties In South Dakota: 1960-1970, Marco Montoya

Electronic Theses and Dissertations

A study of the 1970 South Dakota population was conducted to determine: (1) the extent of disadvantagement by magnitude and residence; (2) the association between the extent of disadvantagement and selected socio-economic factors; and (3) the extent to which factors explaining disadvantagement also served to predict migration based on the net migration experiences of South Dakota counties during 1960 to 1970. The county was selected as the unit of analysis. Selected data from the census were aggregated and tabulated. The magnitude of family and unrelated individual disadvantagement in South Dakota during 1970 was identified for rural farm, rural non-farm, and …

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An Experimental Heat Transfer Analysis Of Summer Cooling Requirements For Tractor Cabs In South Dakota, Joseph C. Thomas Jan 1974

An Experimental Heat Transfer Analysis Of Summer Cooling Requirements For Tractor Cabs In South Dakota, Joseph C. Thomas

Electronic Theses and Dissertations

The past decade has brought many changes to the farmers of the Great Plains. Fewer people are engaged in agricultural production, and the average farm size continues to grow. Today's farmers are buying bigger tractors, many of which have cabs to minimize effects of increased noise pollution, dust, and temperature extremes. Since these cabs were designed to serve as protection from noise and the elements, they must be relatively tight. During hot summer weather the enclosure will become unbearably hot. For this reason, an adequate air conditioning system is almost a necessity. Modern tractor cab air conditioning allows the operator …

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Effects Of Crossbreeding On Growth Rate Of Steers And Heifers, Feed Efficiency Of Heifers And Carcass Characteristics Of Steers, William Lynn Smith Jan 1974

Effects Of Crossbreeding On Growth Rate Of Steers And Heifers, Feed Efficiency Of Heifers And Carcass Characteristics Of Steers, William Lynn Smith

Electronic Theses and Dissertations

The future or the beef industry will be determined by the cost or production or edible product and the efficiency by which beer is produced. If the price or beer becomes excessively high in relation to other protein sources, an alteration in consumers diets can be expected. Also, the world is ever more conscious of its limited resources and concerned about efficient use or available food sources. The role of the animal breeder in the beer industry is to identity the most efficient methods or animal breeding. Crossbreeding is a potential method or improving production when heterosis exists and is …

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Reactions Of Reduced Glutathione With Some Methylated Selenium Compounds, Nancy Wendt Thiex Jan 1974

Reactions Of Reduced Glutathione With Some Methylated Selenium Compounds, Nancy Wendt Thiex

Electronic Theses and Dissertations

Selenium biochemistry has been of general interest since the discovery of selenium as the toxic agent in certain plants, which when ingested by animals causes a definite disease syndrome and even death. Early scientists suggested that the logical place in the body for toxic selenium compounds to attack was at the various sites occupied by sulfur. In 1939 a study was published which indicated that reduced glutathione (GSH), a thiol, protected rats against death from a minimum fatal dose of selenium given as sodium selenite. Since this discovery, the reaction of GSH with various selenium containing compounds has been the …

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Effects Of Different Drills Upon The Improvement Of Agility Of Football Players, Radford F. Taylor Jan 1974

Effects Of Different Drills Upon The Improvement Of Agility Of Football Players, Radford F. Taylor

Electronic Theses and Dissertations

Subjects for this study were 55 volunteers from the SDSU football team. The subjects were divided into four groups, three experimental and one control. Each group was assigned randomly an experimental set of drills selected from those frequently used by coaches. They conditioned six weeks, four times weekly, for fifteen minutes each day. The drill sequences were designated: Group A--quick drills and 10-second drills; Group B--wave drills; Group C--speed drills and sprints; and Group D was the control group. In addition to the drills administered to the three treatment groups, all four groups took part in weightlifting three days per …

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Investigation Of The Anaerobic-Aerobic Treatment System Treating Potato Processing Wastes, Midwest Foods Corporation, Clark, South Dakota, William J. Trygstad Jan 1974

Investigation Of The Anaerobic-Aerobic Treatment System Treating Potato Processing Wastes, Midwest Foods Corporation, Clark, South Dakota, William J. Trygstad

Electronic Theses and Dissertations

The rapid increase in raw potato production has been accompanied by an even greater increase in the amount of processed potatoes. In 1946, only 4.6 percent of the annual potato production was processed into specialty items. By 1960, 32 percent of the total potato crop was being processed. Predictions for 1970 were that more than 50 percent of the raw potatoes would be processed into potato food products. Approximately 36 percent of the potatoes processed in 1964 consisted of frozen potato products. Predictions by DuPont indicate that by 1976, over 3926 million pounds of frozen potato products will be produced. …

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Soil Infiltration Tertiary Treatment Of Stabilization Pond Effluent, Charles Allan Tiltrum Jan 1974

Soil Infiltration Tertiary Treatment Of Stabilization Pond Effluent, Charles Allan Tiltrum

Electronic Theses and Dissertations

Whenever man begins to alter these naturally occurring events, problems arise which must be answered. In the case of engineered soil systems, it is the engineer who must cope with these problems. As discussed later in the review of literature, previous studies conducted on similar types of soil at different locations have revealed different infiltration rates and quality improvements. These contrasting results have indicated that data obtained from other studies cannot be used to reliably predict the infiltration rates or improvements in water quality for soils at different locations. Due to the complex nature of the different soil types and …

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News Diffusion Among South Dakota State University Students, Vadakkeveetil Alexander Thomas Jan 1974

News Diffusion Among South Dakota State University Students, Vadakkeveetil Alexander Thomas

Electronic Theses and Dissertations

This study attempted to determine the pattern of news diffusion of Vice President Spiro Agnew's resignation October 10, 1973, among the students of South Dakota State University, Brookings. The study was conducted by using a five-percent simple random sample of SDSU students. A questionnaire, which asked the 224 respondents the first source of information, the time of hearing the news, location of hearing the news, if they had told the news to anyone else after hearing it, and if they had sought further information from any source, is the basis for this study. The most important finding from this study …

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A Neoclassical Growth Model With An Environment Sector, Gregory Henry Wagner Jan 1974

A Neoclassical Growth Model With An Environment Sector, Gregory Henry Wagner

Electronic Theses and Dissertations

Current discussions often link economic growth as a causative factor in the increase of pollution. Growth in the economy has a number of causes. These include technological innovation, resource discovery and population growth along with the most widely discussed, investment. Economic growth in its advanced stages can cause severe depletion of raw materials, environmental pollution from energy use, and overtaxing of the environment's capacity to absorb and recycle waste products. A simple solution to growth related pollution would be to reduce the rate of growth and therefore reduce pollution. Herein lies a dilemma. Edwin L. Dole has written that reducing …

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Legislative Efforts Pertinent To The Subject Matter Of Selected Debate Propositions From 1920 To 1967, Michie J. Wienk Jan 1974

Legislative Efforts Pertinent To The Subject Matter Of Selected Debate Propositions From 1920 To 1967, Michie J. Wienk

Electronic Theses and Dissertations

National intercollegiate debate propositions have dealt with topics of national or international concern since 1920. In A History of Speech Education in America, L. Leroy Cowperthwaite and A. Craig Baird stated that the subjects selected for debate propositions have clearly reflected the political, 'economic, and sociological issues of the time. Since the topics selected for intercollegiate debate refer to national and international subjects that are reflective of timely issues, it may be beneficial to those concerned with topic selection, and. anyone else involved. or interested in debate, to determine to what extent the national intercollegiate debate propositions have been reflected …

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Ammonia Levels In Maternal And Fetal Tissues And Blood Of Urea-Treated Sheep, Charles C. Yelverton Jan 1974

Ammonia Levels In Maternal And Fetal Tissues And Blood Of Urea-Treated Sheep, Charles C. Yelverton

Electronic Theses and Dissertations

Ammonia toxicosis is known to be a problem of nonprotein nitrogen or urea feeding in ruminant animals. Urea is hydrolyzed in the gastrointestinal tract in the presence of bacterial urease to ammonia and carbon dioxide. Diffusion of ammonia into the circulatory system normally causes no problems since the ammonia is converted into urea by the liver. The harmful effects arise when ammonia concentrations are excessive, normal detoxication processes become impaired, or ammonia is introduced too rapidly. Investigators have concerned themselves with metabolic alterations and cellular activity resulting from ammonia intoxication. The economic advantages of feeding urea to ruminants and the …

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An Evaluation Of Parliamentary Procedure Programs In South Dakota Future Farmers Of America Chapters, Calvin E. Willemssen Jan 1974

An Evaluation Of Parliamentary Procedure Programs In South Dakota Future Farmers Of America Chapters, Calvin E. Willemssen

Electronic Theses and Dissertations

Since education at the high school level is training many students to go directly into the business and professional world as well as preparing them to attend other schools, it may be beneficial to look at one aspect of high school education to see if the students in that area are being offered adequate preparation for the challenge they face in today's world. The Future Farmers of America is a national organization of secondary school students studying vocational agriculture. As part of its course of instruction, FFA offers a section on parliamentary procedure. According to the book Modern Parliamentary Practices, …

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The Existence Of Reversed Digit Addends Modulo N, Lance Adair Wheeler Jan 1974

The Existence Of Reversed Digit Addends Modulo N, Lance Adair Wheeler

Electronic Theses and Dissertations

One of the most interesting and commonly pursued branches of mathematics is the study of number theory. Its appeal lies not in its applicability, but in a fascination for the properties of the numbers themselves. It should be noted that, on occasion, problems of number theory have contributed to more pragmatic branches of mathematics and hence to a practical application. Frequently this happens without the original author's expectation or intention since he was merely remarking on what he considered to be a singular or unusual facet of the employed number system. Such a problem is that which involves the rearrangement …

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An Experimental Investigation Of Mixing Phenomenon And Its Application, Braja Sundar Mahapatra Jan 1974

An Experimental Investigation Of Mixing Phenomenon And Its Application, Braja Sundar Mahapatra

Electronic Theses and Dissertations

No abstract provided.

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Implications For Creativity In Elementary Music Education / By Jane Eberhart Robinson, Jane Eberhart Robinson Jan 1974

Implications For Creativity In Elementary Music Education / By Jane Eberhart Robinson, Jane Eberhart Robinson

Electronic Theses and Dissertations

No abstract provided.

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Criminal Attempt : A Comparison Of Civil Law And Anglo-American Legal Systems / By Rewat Sombunyaviroj, Rewat Sombunyaviroj Jan 1974

Criminal Attempt : A Comparison Of Civil Law And Anglo-American Legal Systems / By Rewat Sombunyaviroj, Rewat Sombunyaviroj

Electronic Theses and Dissertations

No abstract provided.

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Evaluation Of Duck Production On Waterfowl Production Areas In Northeast North Dakota, Gerald L. Heismeyer Jan 1974

Evaluation Of Duck Production On Waterfowl Production Areas In Northeast North Dakota, Gerald L. Heismeyer

Electronic Theses and Dissertations

An investigation of duck production on six Waterfowl Production Areas (WPA’s) in northeastern North Dakota was conducted during 1970-73. This investigation was conducted in conjunction with habitat-manipulation study by the Northern Prairie Wildlife Research Center that entailed prescribed burning of three WPA’s. Wetland habitat conditions, breeding populations and nesting were evaluated all four years. Brood observations were made during the last three years and nesting cover was evaluated during the last two years of investigation. Wetland habitat conditions were generally favorable during the first three years of investigation but in 1973 wetland conditions were extremely poor due to low precipitation …

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Initiation Of Parturition In Dairy Cows With Dexamethasone And Dexamethasone Plus Estradiol Benzoate, Gary Lee Beardsley Jan 1974

Initiation Of Parturition In Dairy Cows With Dexamethasone And Dexamethasone Plus Estradiol Benzoate, Gary Lee Beardsley

Electronic Theses and Dissertations

Parturition was initiated in 25 of 29 (Trial 1) and 26 of 26 (Trial 2) Holstein cows given dexamethasone (Trial 1), 4.4 mg/100 kg body weight, or dexamethasone plus .25 mg estradiol benzoate (Trial 2) at day 273 of gestation. Parturition occurred at 45.l z +/-11.1 h (Trial 1) and 40.8 ± 9.6 h (Trial 2) after injection. Twenty-nine control cows (Trial 1) and 26 control cows (Trial 2) had average gestation lengths of 280 and 281 days, respectively. In Trial 1, calving difficulty was greater (P <.05) while birth weight of calves was 3.0 kg less (P<.05) for the induced cows compared to controls. In Trial 2, no differences in calving difficulty were found, while calf birth weight was 2.5 kg less (P <.10) for the induced cows compared to controls. Average birth weights of calves were 42.4 and 45.4 kg, Trial 1; and L~o.8 and 43.3 kg for Trial 2, for induced and control groups. Severity of udder edema did not differ for either trial. Average daily milk production for the first 9 wk of lactation was 2l~.8 kg and 27.8 kg (Trial 1) and 24.2 kg and 27.7 kg (Trial 2), for induced and control groups. In both trials, differences in milk fat or fat corrected milk were nil. Total milk production (305 day-2X-mature equivalent) was not significantly different for either trial. Changes in body weight were similar for control and induced cows in both trials. The incidence of retained placental membranes was 76 and 10'/4 (Trial 1) and 50 and 4% (Trial 2) for induced and control cows. Average days to first heat, days to firs+, service, days to conception, and services per conception for induced cows were: 58 .4, 79-9, 117.8, 2.0 (Trial l); 80.7, 81.4, 102.2, 1.64 (Trial 2); and for control cows were: 58.6, 82.3, 105.5, 1.8 (Trial l); 89.0, 91.4, 128~6, 1.94 (Trial 2). In Trial 1, the incidence of milk fever in cows with no previous history was 24 and 10'/4 for induced a"'1.d control cows. There were no differences in the incidence of metabolic disorders in Trial 2. Results of California Mastitis Tests were similar for control and induced cows in both trials. In both Trial 1 and Trial 2, fat, protein, total solids, and gamma globulin content of the colostrum did not differ between control an treatment groups;· Casein values were lower (P <.05) for the treatment group in both trials. Average daily gains from 0 to 10 weeks were .63 and .60 kg, for Trial 1; and .51 and .46 kg, for Trial 2, for induced and control calves. No differences were found in calf death loss or health disorders between groups. Similar levels of serum gamma globulin were found for both groups at 0 (before sucking) and 3 days of age in both trials. No meaningful differences were found in total serum protein, albumin, and alpha and beta globulin levels in both trials. No differences were found at birth, in chest depth, shoulder width, head circumference, hip width, and wither height of calves.

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Parasites Of Salmonid Fishes From Southcentral Alaska, James Carl Riis Jan 1974

Parasites Of Salmonid Fishes From Southcentral Alaska, James Carl Riis

Electronic Theses and Dissertations

The importance of fish parasites is directly related to the value of the fish they affect. Alaskan salmonids are extremely important and are constantly increasing in value to the United States. Other countries, such as Japan and Russia, are also finding Alaskan salmonids important as a foodstuff. If human populations continue growing at present rates, in only a few years there could be twice as many people eating fish. As a recreational asset in Alaska, salmonids rank at or near the top, both for sportfishing and as a natural attraction. It is thus important from an economic point of view …

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The Abundance And Seasonal Distribution Of Tabanidae (Diptera) In Spink County, South Dakota, With A Study Of Geographic Variation In Chrysops Aestuans Wulp, Philippe Earl Cobb Jan 1974

The Abundance And Seasonal Distribution Of Tabanidae (Diptera) In Spink County, South Dakota, With A Study Of Geographic Variation In Chrysops Aestuans Wulp, Philippe Earl Cobb

Electronic Theses and Dissertations

This thesis is written in two parts. In part one I report on the results of a survey I conducted in Spink County, South Dakota, to determine the abundance and seasonal distributions of horse flies and deer flies (Diptera: Tabanidae), which bother livestock and people. The proposed Oahe Unit of the Pick-Sloan Missouri River Basin Program will provide many additional acres of tabanid habitat to this area. This survey could be compared with future studies in determining the effects additional acres of tabanid habitat will have had on the populations' levels. The second part of my thesis is an attempt …

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