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A Polyperiod Analysis Of Profit Maximizing Strategies With Beef Cow Herds Under Variable Weather Conditions In North Central South Dakota, David H. Jibben
A Polyperiod Analysis Of Profit Maximizing Strategies With Beef Cow Herds Under Variable Weather Conditions In North Central South Dakota, David H. Jibben
Electronic Theses and Dissertations
This study used three polyperiod linear programming models to analyze the effects of several management strategies on the organization of a hypothetical 2,560 acre ranch in North Central South Dakota. Two models including three-year drought periods and one model with no drought were constructed. In building the two drought models, several assumptions concerning drought assistance to cattle producers were made and incorporated into the models. The major findings of the study were as follows: 1. A land use program using 620 acres of cropland and 1,800 acres of pasture land resulted in greater total profit than a land use program …
The Columnar Junipers Of Western North Dakota (An Investigation Into The Cause Of Their Columnarity), James M. Murphy
The Columnar Junipers Of Western North Dakota (An Investigation Into The Cause Of Their Columnarity), James M. Murphy
Electronic Theses and Dissertations
The objective of this report is to focus on the evaluation of the presence and amount of ethylene in the burning lignite fumes and to search for morphogenetic factors in the lignite at the Slope County site. The former was considered to be more important and was investigated more thoroughly.
Methods Of Analysis Of Yield From Antecedent Winter Water, Charles Gregg Carlson
Methods Of Analysis Of Yield From Antecedent Winter Water, Charles Gregg Carlson
Electronic Theses and Dissertations
This investigation is an evaluation of methods of analysis of water conserved during off-season periods and evaluation of the effect on the subsequent crop. Energy and water shortages during the midsummer peak irrigation season have forced farmers to consider the possibility of irrigation at times other than peak growth stages as an alternative practice. Dryland farmers are interested in the benefit of water conserving cultural practices such as summer fallow and snow trapping. To evaluate the benefit of these off-season practices, a yield function based upon water availability is necessary. In order to better understand the effects of off-season irrigation …
First Year Corn Damage - Northern Corn Rootworm Ovipositional Studies, Thomas W. Hedrick
First Year Corn Damage - Northern Corn Rootworm Ovipositional Studies, Thomas W. Hedrick
Electronic Theses and Dissertations
The purpose of this study was to determine the factors involved in first year corn damage by corn rootworm beetles and to sample small grain stubble for adult dispersion and oviposition.
Treatment Capabilities Of A Rapid Infiltration Pilot Unit Treating Stabilization Pond Effluent, Richard G. Seas
Treatment Capabilities Of A Rapid Infiltration Pilot Unit Treating Stabilization Pond Effluent, Richard G. Seas
Electronic Theses and Dissertations
In October, 1972, Congress passed PL 92-500, "Federal Water Pollution Control Act Amendments of 1972 1; which is designed to upgrade the quality of the nation's water. The act requires the formulation of effluent standards that would require use of “best practicable treatment”. The effluent standards are to require use of the "best available" technology by July 1, 1983 (1). PL 92-500 requires the Environmental Protection Agency Administrator to publish information explaining which treatment techniques may be used to meet the requirement of "best practicable treatment". Land application of wastewater has been designated as a viable alternative to traditional treatment …
Feeding Value Of Brown-Midrib Corn Silage For Lactating Dairy Cows, Joel Leigh Sommerfeldt
Feeding Value Of Brown-Midrib Corn Silage For Lactating Dairy Cows, Joel Leigh Sommerfeldt
Electronic Theses and Dissertations
A 14 wk lactation trial was conducted to evaluate the feeding value of brown-midrib (bm3) corn silage and its normal (N) genetic counterpart using ten Holstein cows per group averaging 6 wk post-partum at the start of the experiment. The cow were fed corn silage (bm3 or N) ad libitum, 2.25 kg alfalfa hay/hd and grain (1 kg/3 kg milk produced) dairy. The bm3 and N, respectively. Milk production for cows fed bm3 and N was 25.0 and 25.5 kg/day. Fat corrected milk and solids corrected milk were similar for both groups. A total collection …
Dietary Intake And Influence Of Nutrition Education For Selected Elderly In The Congregate Meals Program, Grace E. Anderson
Dietary Intake And Influence Of Nutrition Education For Selected Elderly In The Congregate Meals Program, Grace E. Anderson
Electronic Theses and Dissertations
Nationally, the elderly know fewer facts about nutrition as compared to younger people (41). Senior citizens have relatively poor diets and many are at nutritional risk. The Congregate Meals Program (CMP) provides one low-cost meal a day, five days a week for participants over 60 years of age and their spouses. The meal is to provide one-third of the RDA for the elderly. Based on these generalities, the questions investigated in three eastern South Dakota nutrition sites, with this research are: 1) What is the contribution of the CMP in the total dietary pattern of participants as recorded on a …
Fatty Liver-Hemorrhagic Syndrome (Flhs) In Caged Laying Hens, Richard A. Nelson
Fatty Liver-Hemorrhagic Syndrome (Flhs) In Caged Laying Hens, Richard A. Nelson
Electronic Theses and Dissertations
A series of eleven experiments was conducted with caged laying hens to study the effects of diet and strain on production and fat accumulation in the liver. In Experiments 1 to 4, a normal ad libitum feeding regime was used, while in Experiments 5 to 11, a force-feeding technique was used as a procedure to increase the incidence of FLHS. Four commercial hybrid strains and a straightbred SCWL (Regional Control) strain were utilized in this study. Choline supplementation at 1500 mg/kg of diet increased egg production from 1 to 11% while decreasing total liver lipid as much as 50%. Supplementation …
Wildlife Habitat In The James River Valley, South Dakota, L. Paul Schneider
Wildlife Habitat In The James River Valley, South Dakota, L. Paul Schneider
Electronic Theses and Dissertations
A wildlife habitat inventory was conducted on the 12 485 ha study area of the James River floodplain in north-eastern South Dakota. Included were vegetation mapping, small mammal trapping, waterfowl breeding pair counts, waterfowl brood counts, bird census routes, and general observations. Natural vegetation consisted of 3181 ha of grassland, 2002 ha of woodland, 1115 ha of savannah, and 392 ha of marshland. Small mammal trapping revealed low densities of mostly white-footed mice (Peromyscus spp.). No vegetation type was more valuable to small mammals than any other. Waterfowl breeding pairs, mostly mallard, blue-winged teal, and wood duck, numbered 244 in …
The Practicality Of The Caldwell-Lawrence Diagrams For Predicting Lime-Softened Water Quality, James A. Arndt
The Practicality Of The Caldwell-Lawrence Diagrams For Predicting Lime-Softened Water Quality, James A. Arndt
Electronic Theses and Dissertations
The objectives of the investigation were: 1.) to determine the validity of the Caldwell-Lawrence diagrams in predicting alkalinity, calcium, and pH values at various levels of lime addition of the softening process. 2.) to determine the practical application of the diagram for plant operators in daily operations and design engineers for design calculations. Throughout the investigation, primary consideration was given to the practical aspects of water treatment in terms of water sampled, methodology, and.statistical analysis of test results. Construction of the Caldwell-Lawrence diagrams is based on chemical equilibrium between the carbonic species and calcium and magnesium in water. The theory …
Nutritional Adequacy Of The Diets Of Pregnant Cheyenne River Sioux, Kathy M. Dirks
Nutritional Adequacy Of The Diets Of Pregnant Cheyenne River Sioux, Kathy M. Dirks
Electronic Theses and Dissertations
A nutrition survey was conducted in which the diets of 79 pregnant Sioux Indian women living on the Cheyenne River Reservation in South Dakota were evaluated. A 24-hour recall was used and background information was collected by the researcher at Public Health Service prenatal clinics. The dietary intakes were evaluated according to Recommended Dietary Allowances (RDA). Diets were considered to be good if they provided all nutrients (protein, calcium, iron, vitamin A, thiamin, riboflavin, niacin, and ascorbic acid) and energy at or above recommended levels, and poor if they provided one or more nutrients below two-thirds the RDA. In accordance …
A Study Of The Macrobenthic Community In Lake Cochrane, South Dakota, David R. German
A Study Of The Macrobenthic Community In Lake Cochrane, South Dakota, David R. German
Electronic Theses and Dissertations
As part of a continuing study of the biological community of Lake Cochrane, South Dakota, a quantitative survey of the macroscopic bottom fauna was made between the early part of April, 1976 and December, 1976. It was hoped that such a study could provide baseline data for an understanding of the interactions that occur between benthic organisms and other biological components of the lake system. The lake's primary productivity and phytoplankton and zooplankton standing crops have previously been studied by Haertel (1972, 1976) and Steinberg (1972). When this study was being conducted, sediment control dams were being built on three …
Bird Utilization Of Woodland Habitat In The Eastern Quarter Of South Dakota, John M. Emmerich
Bird Utilization Of Woodland Habitat In The Eastern Quarter Of South Dakota, John M. Emmerich
Electronic Theses and Dissertations
Bird utilization of narrow, riparian woodland; riparian; block-like, tree claim; and linear, single-row windbreak habitats in the eastern quarter of South Dakota were studied during the spring migration, reproductive, and winter seasons. The relative importance of these three habitats and multi-row shelterbelt habitat was evaluated using bird species diversity (BSD), bird population density, and habitat preferences of individual bird species. Cluster analysis delineated distinctive vegetation cover types in each of the three habitats studied. Bird communities associated with each cover type were tabulated for comparison purposes and predication capabilities. Multiple regression analysis predicted physical and vegetation features of each habitat …
Diversity And Density Of Shelterbelt Bird Communities, Thomas E. Martin
Diversity And Density Of Shelterbelt Bird Communities, Thomas E. Martin
Electronic Theses and Dissertations
The number of bird species and the density of each species were monitored in 69 shelterbelts in eastern South Dakota during spring migration and breeding seasons in 1976 and 1977. A total of 44 different species of birds were found during breeding and 68 species during spring migration. Approximately 60 to 80% of the species in a shelterbelt eat insects as part of all of their diet. Most of these bird species are territorial. Usually only 1-2 pairs of a territorial species will reside in any one shelterbelt. This low density is caused by the limited habitat area that shelterbelts …
Reasons Why Cows Were Removed From The Sdsu Fairy Herd 1. Discriminant Analysis To Classify Cows With Or Without Reproductive Problems, Fred Tidemann
Reasons Why Cows Were Removed From The Sdsu Fairy Herd 1. Discriminant Analysis To Classify Cows With Or Without Reproductive Problems, Fred Tidemann
Electronic Theses and Dissertations
One of the keys to financial success in the dairy business is the ability of management to detect herd problems and correct them instead of culling cows. It is well known that the average productive life of the dairy cow is less than 4 yr, which is short compared with her potential life. Involuntary removal of cows causes economic loss directly as a result of its effect on yearly milk production, increased replacement cost, and indirectly because the potential selection differential is reduced with premature loss of high producing cows. The degree of culling is related to important economic considerations …
Water And Nitrogen Husbandry For Irrigated Corn In Central South Dakota, Stanley Eugene Papendick
Water And Nitrogen Husbandry For Irrigated Corn In Central South Dakota, Stanley Eugene Papendick
Electronic Theses and Dissertations
The purpose of this study was to evaluate the effects of supplemental water and nitrogen on corn yields. Central South Dakota was chosen as the location for this study because of its existing irrigation and the limited research data available from that part of the state. The objectives were: (1) to determine corn yield response to various water regimes, (2) to determine corn yield response to nitrogen applications, and (3) to determine corn yield response to nitrogen application methods.
An Assessment Of The Understanding Of Human Sexuality Concepts Among Undergraduates At South Dakota State University, Les C. Odegaard
An Assessment Of The Understanding Of Human Sexuality Concepts Among Undergraduates At South Dakota State University, Les C. Odegaard
Electronic Theses and Dissertations
The purpose of the study was to determine the level of understanding in the area of human sexuality among undergraduates at south Dakota State University.
Listeria Monocytogenes In The Environment Of Livestock In South Dakota, James W. Neiles
Listeria Monocytogenes In The Environment Of Livestock In South Dakota, James W. Neiles
Electronic Theses and Dissertations
The purpose of this investigation is to study the incidence of Listeria monocytogenes in the environment of livestock in South Dakota. The data accumulated from these studies will provide information as to its natural habitat, mode of transmission and factors responsible for its incidence.
Clothing Of Pioneer Women Of Dakota Territory, 1861-1889, Joyce Marie Larson
Clothing Of Pioneer Women Of Dakota Territory, 1861-1889, Joyce Marie Larson
Electronic Theses and Dissertations
Hard-times of the Dakota Territory demanding strenuous physical labor compelled the investigator to study the clothing and dressmaking needs of pioneer women 1861-1889. This historical study of costume provides an insight into the life styles [sic] and the role of pioneer women as they interpreted clothing into their physical and utilitarian needs in adapting to the new frontier. The purpose of this research was to study the costume of the American women who resided in the Dakota Territory prior to the statehood of South Dakota, November 2, 1889. During the period 1861-1889, the Missouri River served as a geographical barrier …
Western Corn Rootworm Sex Pheromone; Field Trapping Studies, Michael J. Lockwood
Western Corn Rootworm Sex Pheromone; Field Trapping Studies, Michael J. Lockwood
Electronic Theses and Dissertations
The purpose of this study was to explore the potential of monitoring field populations of the NCR and WCR beetles with pheromone baited sticky traps. Predictions of CRW infestations in corn fields on a single field basis have yet to be achieved. The objectives of this study were: 1. To determine the effects of trapping procedures on CRW beetle trap catch variability: trap design, trap height, pheromone age, pheromone concentration and beetle density. 2. To determine the impact of environmental factors on daily trap catch variability: temperature (OC), wind speed (m/sec), and relative humidity (%) taken at hourly intervals. 3. …
The Cost Of Transporting Grain By Truck In South Dakota With Special Reference To Proposed Rail Line Abandonment, Kenneth W. Keehn
The Cost Of Transporting Grain By Truck In South Dakota With Special Reference To Proposed Rail Line Abandonment, Kenneth W. Keehn
Electronic Theses and Dissertations
The objectives of this thesis are: 1. Estimate the cost equations of transporting grain by farm truck and semi-trailer truck in South Dakota, 2. Estimate the cost of transporting grain by farm truck in the Watertown to Doland and Watertown to Stratford branch line market areas, and 3. Use the results of objectives 1 and 2 to evaluate various alternatives if branch line abandonment occurs in the above market areas. The alternatives to be studied are: a. Trucking grain to the nearest elevator without rail service and receiving less for grain, b. Trucking grain to the nearest elevator with rail …
Deterioration Of Eggshell Quality And Calcium Metabolism In Laying Hens, Chang Won Kang
Deterioration Of Eggshell Quality And Calcium Metabolism In Laying Hens, Chang Won Kang
Electronic Theses and Dissertations
The present study was undertaken to: (1) develop a reliable method of measuring eggshell quality, (2) determine whether diet alterations that cause a somewhat reduced rate of egg production could influence shell quality, and (3) determine whether certain biochemical parameters involved in calcium metabolism are related to shell quality.
Methodology Development For The Study Of The Anaerobic Bacterial Flora Of Bovine Feces, Donald G. Kirsch
Methodology Development For The Study Of The Anaerobic Bacterial Flora Of Bovine Feces, Donald G. Kirsch
Electronic Theses and Dissertations
The intestinal bacterial flora of an animal has a considerable influence on the physiology of that animal. Some bacteria of the intestine are pathogenic and can initiate infections if they gain access to a susceptible individual. Some of the intestinal bacteria can produce potent carcinogens in vitro and can presumably do this also in vivo. Food passing through the alimentary tract of an animal is also chemically modified through the enzymatic action of the bacterial flora. The animal is also protected from some enteric infections through the antagonistic and competitive actions of the established organisms of the normal bacterial flora. …
Rotaviral Enteritis In Gnotobiotic Pigs: A Scanning Electron Microscopic Study, Marcus W. Johnshoy
Rotaviral Enteritis In Gnotobiotic Pigs: A Scanning Electron Microscopic Study, Marcus W. Johnshoy
Electronic Theses and Dissertations
The objectives of this study were: 1. To experimentally reproduce rotaviral diarrhea in gnotobiotic pigs. 2. To determine the appearance of the normal intestine by scanning electron and light microscopy. 3. To compare by scanning electron and light microscopy the appearance of segments from different areas of intestine and to determine the development, location, and severity of rotaviral lesions in gnotobiotic pigs.
Discharge Measurement And Energy Efficiency Evaluation Of Irrigation Pumping Plants, Bruce A. Jennings
Discharge Measurement And Energy Efficiency Evaluation Of Irrigation Pumping Plants, Bruce A. Jennings
Electronic Theses and Dissertations
No information has been available regarding efficiencies of electric irrigation pumping plants in South Dakota. Pumping plant discharge, a key parameter in the calculation of pumping plant efficiency, is often difficult to measure in the field. A project was initiated at South Dakota State University in 1976 to investigate field pumping plant efficiencies. The following objectives were established for the project. 1. To investigate various methods of measuring irrigation pumping plant discharge. 2. To develop a suitable field procedure for determining electric irrigation pumping plant efficiency. 3. To measure energy efficiency of selected electric irrigation pumping plants in South Dakota.
Nonsporing Anaerobic Bacteria In Foods, Sylvia M. Huppler
Nonsporing Anaerobic Bacteria In Foods, Sylvia M. Huppler
Electronic Theses and Dissertations
Anaerobic non spore forming bacteria are not detected in routine food examinations, and their occurrences in foods has seldom been reported in the literature. The purpose of this study is to determine the occurrence of non-spore forming anaerobes, the identification of the isolates found, and the possible growth and multiplication in foods which might contribute to spoilage or food illness.
Effects Of Strain On Response Of Laying Hens To Low Protein Diets And Amino Acid Supplements, Ali B. Kashani
Effects Of Strain On Response Of Laying Hens To Low Protein Diets And Amino Acid Supplements, Ali B. Kashani
Electronic Theses and Dissertations
Corn is by far the most widely used cereal grain in the United States for poultry feeding. In addition to its high energy content, corn provides adequate amounts of the essential fatty acids for maximum rates of growth and egg production. Palatability and ample xanthophyll and provitamin A contents of fresh corn are some o the other contributing factors for its popularity in livestock feeding. The most serious limitation in the nutritional value of corn as well as other cereal grains lies in the fact that they are low in both quantity and quality of protein. It has been a …
Cinematographic Analysis Of Ball Trajectory During Free Throw Shooting Among Members Of The South Dakota State University Varsity Basketball Team, Herbert Harold Hofer Jr.
Cinematographic Analysis Of Ball Trajectory During Free Throw Shooting Among Members Of The South Dakota State University Varsity Basketball Team, Herbert Harold Hofer Jr.
Electronic Theses and Dissertations
Two-hundred and twenty successful and 143 unsuccessful free throw attempts, performed by 20 members of the South Dakota State University men's varsity basketball team, were photographed. Components of each trial which were analyzed included: (1) angle of release, (2) angle of entry, (3) height of the arch, (4) horizontal distance of the point of release from the highest point of the arch, (5) horizontal distance of the highest point of the arch to the front of the rim, and (6) height of the release. The mean and standard deviation values for each component were determined. A correlation analysis revealed that …
Midwestern Mosaic: A Study Of The Homogeneity Of Ethnic Populations In Omaha, Nebraska, 1880, Kathleen Louise Fimple
Midwestern Mosaic: A Study Of The Homogeneity Of Ethnic Populations In Omaha, Nebraska, 1880, Kathleen Louise Fimple
Electronic Theses and Dissertations
The aim of this study is to delimit neighborhoods in an urban setting using the ethnic homogeneity of the population as the major criteria. The study will seek to compile data at a very large scale--i.e., city blocks or streets--and present cartographically an accurate delimitation of community and neighborhood. In addition, some analysis of the ethnic homogeneity of such areas will be carried out in order to assess the selective inclination of certain national groups to concentrate spatially. The specific study area is Omaha, Nebraska, in the year, 1880.
Factors Affecting South Dakota Guidance Counselors' Perceptions Of The Career Opportunities Of Native American Students, Janet A. Gullickson
Factors Affecting South Dakota Guidance Counselors' Perceptions Of The Career Opportunities Of Native American Students, Janet A. Gullickson
Electronic Theses and Dissertations
The objectives of this study are as follows: 1. The identification of guidance counselors' perceptions of occupational opportunities existent for their Native American clients. 2. The determination of the extent to which the factors of race, sex and school location are associated with guidance counselors' perceptions of Native American students' occupational opportunities. 3. The development of a model to describe and predict differences in guidance counselors' perceptions of Native American students’ occupational opportunities. The objectives of this study coincide in part with the objectives of a larger research project ongoing in the Rural Sociology Department at South Dakota State University. …