Digital Commons Network^™

Efficacy Of Denning In Alleviating Coyote Depredations Upon Domestic Sheep, James A. Till

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bands of domestic sheep lambing on the open range in south central Wyoming were monitored for predator losses prior to and following coyote (Canis latrans) removals. Experimental treatments, including 1) no removal (control), 2) removal of 2 adults and their pups, and 3) removal of pups only, were replicated 15 times each. Number of predation incidents (events) was reduced 98.2% by removing adults and pups. The number of sheep killed was reduced by 98.8%. Removing only litters of pups resulted in a decrease of 87.7% total kills decreased 91.6%. in predation incidents, while Overall, 23 of 30 predation …

An Evaluation Of Deschampsia Caespitosa (L.) Beauv Populations For Metal Tolerances And Ecotypic Variation At Climax, Colorado, Paul Ellsworth Pratt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Four populations of Deschampsia caespitosa (L.) Beauv (a Poaceae species), growing on disturbed and undisturbed sites at Climax, Colorado, were examined for metal tolerances (Zn, Cu, Pb, Al). Root growth assessments on parent plant and offspring material for each population were conducted using nutrient solutions containing elevated levels of Zn, Cu, Pb, or Al. Seed germination and seedling survival tests for each population were conducted on both alpine topsoil and mine spoil material.

Evidence is presented that supports the hypothesis that ecotypic variation exists within Deschampsia caespitosa and that this variation has allowed certain Deschampsia populations to become successfully established …

Autonomic Self-Control Of Clinical Relaxation As A Function Of Imagery, Dean G. Allen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this dissertation was to test the significance of objectively measured imagery ability on the learning of self-controlled relaxation of autonomic nervous system activity. Imagery is discussed in terms of its interaction with Autogenic vs. Jacobsonian methods of training clinical relaxation.

Thirty-six female subjects from a college population, representing extreme highs and lows on "spatial ability" tests were given a series of three six-session sequences of Baseline, Treatment 1, and Treatment 2, which contained silent relaxation as a control, plus Jacobsonian and Autogenic relaxation. High and low spatial ability subjects were divided into split groups (A & B) …

Word Associations And The Bilateral Electrodermal Responses Of High And Low Repressive Females As Measured By The Mmpi R Factor Scale, Peggy J. Poe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

On the basis of the MMPI R Factor Scale, 16 subjects were classified as high repressed and 14 as low repressed. Subjects were compared on patterns of bilateral differences in skin conductance as a function of three cognitive tasks intended to produce specific manipulations in the relative activation of the two cerebral hemispheres. Tasks 1 and 2 examined the effects of Verbal (left hemisphere) and Spatial (right hemisphere) tasks on amplitudes of electrodermal responses. Task 3 examined the effects of the presentation of double-entendre and asexual stimulus words (designed to produce an emotional stimulus) on the high and low repressed …

Muskrat Population Levels And Vegetation Utilization: A Basis For An Index, Thomas R. Mccabe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Muskrats (Ondatra zibethicus) are associated with marshlands throughout North America. Their impact on marsh vegetation is well documented. In recent years, research pertaining to marsh ecosystems has emphasized the role of interspersion of marsh vegetation to higher faunal diversity and productivity. Muskrats can provide a natural control of aquatic emergents if managed properly. Experimentation at Fish Springs National Wildlife Refuge, Utah, has attempted to ascertain whether vegetation-utilization index could be used for determining muskrat population levels and to evaluate the impact of muskrats on their primary food resource, Olney's bulrush (Scirpus americanus).

Three known populations of …

Estimating Esterase And Monooxygenase Detoxication By Bioassay, Electrophoresis And Metabolic Studies In Pea Aphid, Acrythosiphon Pisum (Harris) Populations (Homoptera: Aphididae), Deifalla H. Al-Rajhi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The role of esterases and monooxygenase in the detoxication vii processes of field populations of pea aphids was studied in relation to seasonal changes, developmental stage, and treatment with DEF and piperonyl butoxide. LCSO values for 12 hour exposure periods in glass vials ra nged from 0.04-2.3 micrograms / vial and 820-4871 J.Jg/vial for paraoxon and carbaryl, respectively. Topical bioassays showed the adults to be more tolerant to paraoxon (LDSO of 1. 4-12.3 ng/aphid) toxicity than nymphs (LDSO of 0.13-4. 7 ng/aphid).

Treatment with DEF® (S,S.S-tributylphosphorotrithioate) enhanced paraoxon toxicity against the pea aphid whereas piperonyl butoxide had little …

Evaluation Of Allergic Hypersensitivity To 2,4-D, Malathion, And Captafol In Mice, Janette R. Cushman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

2,4-D-specific IgE antibodies were detected in serum of BALB/c mice using the rat passive cutaneous anaphylaxis (PCA) test following the second intraperitoneal immunization with 1, 10, or 100 ug of 2,4-D0keyhole limpet hemocyanin (KLH) conjugate administered with aluminum hydroxide adjuvant. The groups that received 1 ug of 2,4-D conjugate had the highest antibody titers (geometric mean of 60). A paper radioallergosorbent test (PRAST) was developed for determination of 2,4-D-specific IgE. The PRAST was equally as sensitive as and showed a positive correlation with the PCA assay.

The anhydride of the diacid metabolite of malathion (MMA) coupled to KLH elicited MMA-specific …

Endocrine And Physiological Responses Of The Female Goat During Three Reproductive Phases, Dana Dean Clark

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Female Spanish x Dairy cross goats were divided into three reproductive phases--breeding season or cyclic (20), seasonal anestrus (20), and early postpartum (20). Each group of animals was further divided into three treatments--control (10), Gonadotropin Releasing Hormone (GnRH) treated (5), and pituitary Luteinizing Hormone (LH) (5). During each of the above mentioned reproductive phases, the following were measured: progesterone and LH profiles, serum LH levels following GnRH injection, pituitary LH concentration and ovarian responses following GnRH treatment.

Progesterone levels indicative of luteal development were present only in the breeding season. Progesterone levels during the seasonal anestrous and postpartum periods were …

The Effect Of Rain Leaching On Field Dried Alfalfa Hay Yield And Lamb Production From The Hay, John M. Kaykay

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A 2 x 3 x 2 factorial arranged split plot experiment was used to determine the decrease of dry matter yield from field-dried alfalfa hay caused by the application of a measured quantity of artificial rain (sprinkling irrigation). The three hay treatment factors were (1) alfalfa hay was cut at late vegetative and early bloom stage of maturity and (2) leached by 0, 5 mm or 20 mm of artificial rain applied by sprinkling and (3) sprinkled in the swath, 24 or 48 hours after cutting.

Changes in dry matter yield were not significantly (P < .05) related to stage of maturity of forage, level of artificial rain applied or the time of application of artificial rain. There were no significant interactions for dry matter yield. The non-significant results were probably due to the variability of the alfalfa stand among the specific areas harvested for each treatment and insufficient replications to control the variability.

Forty-eight lambs were fed for …

Effect Of Three Methods Of Processing Barley On Intake And Production Of Lactating Cows, Carlos Garcia Jauregui

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twenty-four lactating cows were randomly assigned to three treatments within eight each 3 x 3 latin squares with three periods of 21 days duration. Three processing treatments of barley were 1) steam-rolled, 2) ground (fine), and 3) soak-rolled (soaked in water for appr. 24 hours, rolled, and fed within 48 hours). All rations were fed ad libitum and were comprised of 24% alfalfa hay, 16% corn silage, 35.5% barley, 12% whole cottonseed, 12% wheat bran, 0.3% salt, and 0.3% dicalcium phosphate on a dry matter (DM) basis. Electronic doors were used to collect individual feed intake data. Rations and feces …

Nutrient Requirements Of Ruminants In Developing Countries, Leonard C. Kearl

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This book was assembled using the latest information for compiling the nutrient requirements of sheep, goats, cattle and water buffalo. Because of the complexity of the interactions between an animal, its diet, its physiological state, and the environment; the values depicting the nutrient requirements are estimates and not absolutes. These values, however, are considered to be adequate to meet the minimum requirements of healthy animals maintained in a thermoneutral environment.

The mean energy and protein values used in the nutrient tables were arrived at from combining values found in the literature and those provided in personal communication with animal nutritionists …

Genesis Of A Vertisol And An Associated Palexeroll In Northern Utah, Robert C. Graham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The genetic relationship between a Vertisol and an associated Mollisol with an argillic horizon was studied. These soils are taxadjuncts of the Hawkins and Ostler series, respectively. They occur in the Wasatch Mountains of northern Utah and have similar parent materials, altitudes, and slope percentages. Ostler soils have a dense cover of Gambel oak (Quercus gambelii) and occur preferentially on north aspects. Mule's ear (Wyethia amplexicaulis) is the dominant vegetation on Hawkins soils, which are most frequent on south aspects. Erosion is prevalent on Hawkins soils because the mule's ear does not adequately cover the soil …

Scanning Electron Microscopic (Sem) Studies On Range Grasses And Their Resistance To Black Grass Bugs, Yun-Hwa Ling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Large populations of black grass bugs, Labops hesperius Uhler, have been observed on extensive acreages of range lands. These bugs cause severe damage to the range grasses, lowering their palatability and productivity. This study was to determine whether morphological differences among breeding lines of grass species or interspecific hybrids could be correlated with the feeding behavior of black grass bugs. If so, plant breeders should be able to develop resistant cultivars. To explore this possibility, cultivars and synthetics of range grasses, representing the genera, Agropyron, Dactylis, Phalaris and Poa, were exposed to different instar stages (II and …

The Characterization Of Carbamate Resistance In The Colorado Potato Beetle, Leptinotarsa Decemlineata (Say), In Comparison With The House Fly, Musca Domestica (L), Randy L. Rose

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Resistant and susceptible populations of the Colorado potato beetle, Leptinotarsa decemlineata (Say), and the house fly, Musca domestica (L), were compared with respect to carbofuran and carbaryl toxicity in the presence and absence of the synergist, piperonyl butoxide. Resistance levels of the New Jersey population when compared with the susceptible Logan population by topical application of carbaryl and carbofuran were > 833 and 820, respectively. A resistance level of 583 was determined from carbofuran bioassays of Rutgers and NAIDM house flies. Similar levels of resistance development between these species suggests the possibility that similar resistance mechanisms may be involved.

Utilization of …

Linear Regression Of The Poisson Mean, Duane Steven Brown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis was to compare two estimation procedures, the method of least squares and the method of maximum likelihood, on sample data obtained from a Poisson distribution. Point estimates of the slope and intercept of the regression line and point estimates of the mean squared error for both the slope and intercept were obtained. It is shown that least squares, the preferred method due to its simplicity, does yield results as good as maximum likelihood.

Also, confidence intervals were computed by Monte Carlo techniques and then were tested for accuracy. For the method of least squares, confidence …

Reproductive Behavioral And Physiological Traits In Domestic, Wild, And Hybrid Ovis, Kara-Lynn Crocker-Bedford

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was part of a program to develop new genotypes of sheep (Ovis spp.) and goats (Capra spp.) which are more useful for food and fiber production. The study examined the influence of domestication on behavioral and physiological traits of ewes and lambs, the influence of a single or twin offspring on ewe and lamb behaviors, and general relationships between ewes and lambs during the lambs' first month of life.

Domestication has caused the intensities of observed traits to diverge greatly from the tendencies shown by wild populations. Domestication has produced increases in measurements associated with maternal …

Cougar Predation And Ecological Energetics In Southern Utah, Bruce Bennet Ackerman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Diet of cougars (Felis concolor) was studied from December 1978 to August 1981, on a 4500 km2 study area near Escalante, Utah. Prey eaten was determined from analysis of 112 animals consumed as prey, and from 239 cougar scats. Mule deer (Odocoileus hemionus) were the major prey item, comprising 81% of biomass consumed. Lagomorphs, large rodents, and smaller predators were also important components. Cattle comprised <1% of the diet, although commonly grazed on the cougar's summer range. Adult male and juvenile (<1yr) mule deer were killed more often than expected, in fall (P<0.10) and in winter (P<0.005). Cougars were a major cause of mortality of adult deer (41% of all adult female deaths, 35% of male), but only 6% of mortality of juveniles. Selection of prey seemed to be a function of prey vulnerability, rather than one of active choice by the predator.

Motion-sensitive radio-transmitters were placed on 15 cougars, from 3 months to 7-9 years of age. Three parameters of the radio signal were used to determine activity levels during 6843 …

Population Characteristics And Movement Patterns Of Cougars In Southern Utah, Thomas P. Hemker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Movements of 22 cougars (Felis concolor) were monitored by radio-telemetry between January 1979 and July 1981 in southern Utah. The population, composed of resident, transient, and juvenile cougars, remained relatively constant in size for 3 years. Densities (0.4-0.5 cougars/100 km²) were considerably lower than has been reported elsewhere. Average annual home area size of resident females (685 km²) and a single resident male (826 km²) were substantially larger than other home area sizes reported. Home areas of resident females overlapped and resident male home areas may have overlapped as well. Despite the …

Toxicologic Effects Of Extracts Of Cestrum Parqui L'Héritier In Mice, Tomás A. López

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Cestrum parqui L'Héritier is a Solanaceous weed of wide distribution throughout the world. It causes poisoning of animals, particularly cattle and sheep, and constitutes a serious problem for animal production in some countries.

The present study was undertaken to develop a biological test for the detection of toxicity of extracts obtained from the plant. This test will be utilized to assess the toxicity of extracts obtained from the plant in future studies.

The plant is known to induce poisoning in laboratory animals, but there are no precise references on doses to be utilized and of appropriate routes of dosing. Oral …

The Influence Of Winter Social Behavior On The Habitat Selection And Reproductive Success Of The Black-Billed Magpie, Kerry P. Reese

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined the influence of winter social behavior, particularly dominance relationships, on the subsequent nesting habitat selection and reproductive success of Black-billed Magpies (Pica pica hudsonia) on 2 areas in northern Utah. Hierarchical cluster analysis ordinated the habitats available to breeding birds and Chi-square and Bonferoni-z statistics were used to determine those habitat types the magpies seemed to prefer. Social status was determined by observing color-banded birds engaged in agonistic encounters at winter bait stations. Social dominance was evaluated by % dyads won, not by total % victories. Relationships between winter social status of magpies and their …

Utah Science Vol. 43 No. 1, Spring 1982

Utah Science

1 GRAZING FEES FOR PUBLIC LANDS: WHAT'S FAIR? D. B. Nielsen Formulas and fees help set the price of beef. They also are factors in rancher survival rates. Learn how the process works in this article.

7 BUR BUTTERCUP: A WEEDY IMMIGRANT M. E. Barkworth Whys and hows of plant transfers between regions and countries are solved by special detective work. A USU scientist wants to help in keeping track of Bur Buttercup migrations.

10 BUR BUTTERCUP: IT WILL GET YOUR SHEEP IF YOU DON'T WATCH OUT J. D. Olsen, T. E. Anderson, and G. Madsen Although not a true …

Fifth Biennial Cheese Industry Conference, Various Authors

Cheese Industry Conference

No abstract provided.

Proceedings From The 19th Annual Marschall Invitational Italian Cheese Seminar 1982, Various Authors

Cheese Industry Conference

No abstract provided.

Ultrastructural Studies Of Milk Digestion In The Suckling Rat, P. B. Berendsen

Food Structure

The structure of milk in the stomach and proximal small intestine of suckling rats at 12 and 24 hours, 5, 10 and 15 days of age was examined by scanning and by transmission electron microscopy. The milk curd in the gastric lumen consisted of chains of casein micelles which entrapped milk fat globules. The appearance was similar to that reported for bovine milk curd and cottage cheese. The gastric milk curd at 12 and 24 hours also contained large masses of granules 4-8 nm in diameter. The relationship of these particles to casein micelles is unknown.

Casein micelles in the …

Aspects Of Sample Preparation For Freeze-Fracture/Freeze-Etch Studies Of Proteins And Lipids In Food Systems. A Review, Wolfgang Buchheim

Food Structure

To select optimum specimen preparation methods and to correctly interpret freeze-fracture/freezeetch micrographs of food systems a detailed knowledge of the individual steps of preparation -- i.e. chemical fixation of samples, their cryoprotective pretreatment, cryofixation, freeze-fracturing and -etching, and replication -- and of their influence on the appearance of different constituents, especially proteins and lipids, is necessary. Food systems show great variation in composition, structure and especially in their content of water -- e.g. molecular and colloidal solutions, oil-in-water and water-in-oil emulsions, gels suspensions, semi-solid systems such as cheese, dried systems such as milk powders -- thus requiring a careful variation …

The Hornfaced Bee For Efficient Pollination Of Small Farm Orchards, Suzanne W. T. Batra

Ba

Osmia cornifrons is a highly efficient pollinator of rosaceous tree fruits (Pyrus and Prunus spp.). It is managed commercially in Japanese orchards, and it has been introduced into the eastern United States. Due to its effectiveness, docility, ease of handling and short flight range, it is well adapted for use on small farms.

General Catalog 1982-1984, Utah State University

University Catalogs

General Catalog of 1982-1984

Contains course descriptions, University college calendar, and college administration.

Lake Powell Water Quality Programs And Associated Files, A Users' Guide To Programs Powell And Powplot, United States Department Of The Interior, Bureau Of Reclamation

Water

During the summer of 1980, work began at the Engineering and Research Center, Bureau of Reclamation, to develop a computerized method for analyzing Lake Powell water quality data. Lake Powell, in southeastern Utah is formed by Glen Canyon Dam on the Colorado River at Page, Arizona. This work was carried out by Mr. Greg A. Keller under the supervision of Mr. David H. Merritt in the Colorado River Water Quality Office. By July of 1981, two computer programs, named POWELL and POWPLOT, had been produced. This document is intended to provide guidance for the user of these programs.

Bruneau-Kuna Grazing Environmental Impact Statement Final, United States Department Of The Interior Bureau Of Land Management

Final Environmental Impact Statements (ID)

The Bruneau-Kuna Grazing Environmental Impact Statement analyzes the effects of livestock grazing on 2,379,014 acres of public land in southwest Idaho. Four grazing management alternatives to the Proposed Action are presented and analyzed in terms of their projected economic, social and environmental effects. Each alternative analyzes a different level of allocating the vegetative resource among competing users. This document will be used to determine the proper level of forage allocation to livestock and wildlife use on the public lands, using the multiple use sustained-yield concept. The rangeland management program selected for the subject public land will be based upon the …

A Survey Of Potential Ecological Natural Landmarks Of The Middle Rocky Mountains, Janet L. Johnson, Robert D. Pfister

Elusive Documents

No abstract provided.