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Changes In Serum Proteins And Other Blood Values Associated With Ostertagia Ostertagi Infection In Calves, Jerome L. Mahrt

Biology

Parasitism causes large economic losses to the livestock industry. Included in this economic loss are death to the host animal, but even more important are the losses due to illness, reduced growth rate, decreased meat, milk, egg, and wool production and, in working animals, loss of working energy (Levine, 1961). Even rough estimates of this economic loss are difficult to make. The United States Department of Agriculture (1954) published a 10 year report (1942-1951) on the annual losses due to parasitism in the United States. According to this report parasitism caused an estimated loss to livestock and poultry of $79,532,000 …

Changes In Serum Proteins And Other Blood Values Associated With Ostertagia Ostertagi Infection In Calves, Jerome L. Mahrt

Biology

Parasitism causes large economic losses to the livestock industry. Included in this economic loss are death to the host animal, but even more important are the losses due to illness, reduced growth rate, decreased meat, milk, egg, and wool production and, in working animals, loss of working energy (Levine, 1961). Even rough estimates of this economic loss are difficult to make. The United States Department of Agriculture (1954) published a 10 year report (1942-1951) on the annual losses due to parasitism in the United States. According to this report parasitism caused an estimated loss to livestock and poultry of $79,532,000 …

Experimental Study Of Tissue Eosinophil Transformation, Ferrell R. Campbell

Biology

An increase in the number of eosinophilic leukocytes has long been recognized as an integral part of the cellular response of the body to parenterally introduced foreign proteins. Although the function of eosinophils is poorly understood, high eosinophil counts have been associated with the antigen-antibody reactions resulting either directly or indirectly from hypersensitivity.

Experimental Study Of Tissue Eosinophil Transformation, Ferrell R. Campbell

Biology

An increase in the number of eosinophilic leukocytes has long been recognized as an integral part of the cellular response of the body to parenterally introduced foreign proteins. Although the function of eosinophils is poorly understood, high eosinophil counts have been associated with the antigen-antibody reactions resulting either directly or indirectly from hypersensitivity.

A Morphological And Cultural Study Of Trichomonads And Other Flagellates Of The Bovine Digestive Tract, Emron A. Jensen

Biology

The trichomonads of the bovine digestive tract are incompletely known and the taxonomy of the described species is not clear. Two species, Trichomonas enteris (Christl) and T. bovis (Pavlov and Dimitrov) from the lower digestive tract of cattle have been described, although the descriptions in both cases were not complete. A species of flagellates of the rumen has been known since 1913; it has been called a trichomonad by some authors and a monocercomonad by others.

Bioassay Studies With Ddt On Utah Populations Of Codling Moth, Morteza Esmaili

Biology

The codling moth is known as one of the important persts of apple, pear, quince, walnut and several other fruits. It occurs wherever these fruits are grown and it is a serious limiting factor in all apple growing areas. The injury is caused by the larva which tunnels into the fruit, lowering its commercial value and making the fruit susceptible to infections from fungi and bacteria.

In Vivo And In Vitro Excystation And Description Of The Sporulated Oocysts Of Some Bovine Coccidia, Peter A. Nyberg

Biology

Excystation, as applied to the coccidia, is the mechanism by which sporozoites are released from sporocysts and oocysts. This process has been investigated both in vivo and in vitro, in poultry, rabbits, and sheep. Some work has been done with bovine coccidia, but excystation in vitro has not been reported.

A Morphological And Cultural Study Of Trichomonads And Other Flagellates Of The Bovine Digestive Tract, Emron A. Jensen

Biology

The trichomonads of the bovine digestive tract are incompletely known and the taxonomy of the described species is not clear. Two species, Trichomonas enteris (Christl) and T. bovis (Pavlov and Dimitrov) from the lower digestive tract of cattle have been described, although the descriptions in both cases were not complete. A species of flagellates of the rumen has been known since 1913; it has been called a trichomonad by some authors and a monocercomonad by others.

The Responsible Exercise Of Creative Power, Carlton Culmsee

Faculty Honor Lectures

ONCE last summer we stood. near the snow-white cascade flowing over the world's largest concrete dam, Grand Coulee, which is twice as high as Niagara Falls. We were alone in the gallery with the shafts that link the turbines to the dynamos. The nearest shaft appeared to be a pillar strong enough to bear half the burdens of humanity. It seemed to stand still and serene. Examined more closely, it revealed itself as spinning with perfect smoothness. For all we could see, we were alone in the eleven miles of passages inside the dam and powerhouse, alone with a cosmic …

The Secret Of Viral Reproduction, George W. Cochran

Faculty Honor Lectures

Nucleic acid is the basis of life. There are 2 types, ribose nucleic acid (RNA) and deoxyribose nucleic acid (DNA). DNA, the material found in the chromosomes within the nuclei of the cells of most living organisms, bears the genetic code that determines all of the characteristics of a living organism. Information from the DNA of the chromosomes is carried to all parts of the cell by one type of RNA called messenger RNA. Additional specialized RNA molecules are found inside the ribosomes, tiny bodies within the protoplasm that make proteins for the cell. Still other, smaller RNA molecules, called …

Influence Of Some Environmental Factors On Black Hills Beetle Population Trends, Mark D. Mcgregor

Biology

The Black Hills beetle, Dendroctonus ponderosae Hopk. is the most destructive insect of ponderosa pine, Pinus ponderosa Laws., on the Dixie National Forest and in Bryce Canyon National Park in southern Utah. This beetle also attacks limber, whitebark, pinyon, lodgepole, bristlecone and Mexican white pines, and occasionally Englemann and blue spruces throughout its range in South Dakota, Wyoming, Colorado, Utah, northern Arizona and New Mexico. It seldom produces broods in spruces, because the parent and young brood are usually "pitched-out." This insect has been known to recur periodically in stands of overmature ponderosa pine.

The Site Of The Immune Reaction Against Eimeria Bovis In Calves And The Demonstration Of Antibodies By Immunofluorescence, Ferron L. Andersen

Biology

In 1959 Senger et al. reported that calves which had received a small oral inoculation of Eimeria bovis oocysts were later resistant to larger challenge inoculations. In an investigation on the mechanism of this immune reaction, Hammond et al. (1959) compared the number and size of E. bovis schizonts in immunized and nonimmunized calves, but found no significant difference in the results. They conducted 3 experiments using 28 young male Holstein-Friesian calves, and killed the majority of these calves for examination 17 to 20 days after the challenge inoculation.

In Vivo And In Vitro Excystation And Description Of The Sporulated Oocysts Of Some Bovine Coccidia, Peter A. Nyberg

Biology

Excystation, as applied to the coccidia, is the mechanism by which sporozoites are released from sporocysts and oocysts. This process has been investigated both in vivo and in vitro, in poultry, rabbits, and sheep. Some work has been done with bovine coccidia, but excystation in vitro has not been reported.

The Effect Of Monosodium Glutamate As A Possible Mutagen On The Compound Eye Of Drosophila Melanogaster, N. Roger Hawkes

Biology

Phenotypes of Drosophila can be altered by subjecting developing larvae to changes in environment. Such environmental changes may be temperature shocks, ionizing and non-ionizing radiation and chemically altered media. Most alterations in phenotype are not inherited, and may resemble the effects produced by known mutant genes. Such alterations are called phenocopies.

A Morphological And Cultural Study Of Trichomonads And Other Flagellates Of The Bovine Digestive Tract, Emron A. Jensen

Biology

The trichomonads of the bovine digestive tract are incompletely known and the taxonomy of the described species is not clear. Two species, Trichomonas enteris (Christl) and T. bovis (Pavlov and Dimitrov) from the lower digestive tract of cattle have been described, although the descriptions in both cases were not complete. A species of flagellates of the rumen has been known since 1913; it has been called a trichomonad by some authors and a monocercomonad by others.

Experimental Study Of Tissue Eosinophil Transformation, Ferrell R. Campbell

Biology

An increase in the number of eosinophilic leukocytes has long been recognized as an integral part of the cellular response of the body to parenterally introduced foreign proteins. Although the function of eosinophils is poorly understood, high eosinophil counts have been associated with the antigen-antibody reactions resulting either directly or indirectly from hypersensitivity.

Bioassay Studies With Ddt On Utah Populations Of Codling Moth, Morteza Esmaili

Biology

The codling moth is known as one of the important persts of apple, pear, quince, walnut and several other fruits. It occurs wherever these fruits are grown and it is a serious limiting factor in all apple growing areas. The injury is caused by the larva which tunnels into the fruit, lowering its commercial value and making the fruit susceptible to infections from fungi and bacteria.

The Demonstration Of Humoral Antibodies Against Eimeria Bovis In Cattle, Lyle Lowder

Biology

Cattle are rarely free of coccidia (Marsh, 1938). It is estimated that this disease is responsible for an annual loss of 10 million dollars in the cattle industry; which is second only to the loss caused by liver flukes among internal parasites. The mortality was conservatively estimated to be as high as 29.1 percent in several outbreaks of bovine coccidiosis (Agriculture Research Service, 1954).

Changes In Serum Proteins And Other Blood Values Associated With Ostertagia Ostertagi Infection In Calves, Jerome L. Mahrt

Biology

Parasitism causes large economic losses to the livestock industry. Included in this economic loss are death to the host animal, but even more important are the losses due to illness, reduced growth rate, decreased meat, milk, egg, and wool production and, in working animals, loss of working energy (Levine, 1961). Even rough estimates of this economic loss are difficult to make. The United States Department of Agriculture (1954) published a 10 year report (1942-1951) on the annual losses due to parasitism in the United States. According to this report parasitism caused an estimated loss to livestock and poultry of $79,532,000 …

Influence Of Some Environmental Factors On Black Hills Beetle Population Trends, Mark D. Mcgregor

Biology

The Black Hills beetle, Dendroctonus ponderosae Hopk. is the most destructive insect of ponderosa pine, Pinus ponderosa Laws., on the Dixie National Forest and in Bryce Canyon National Park in southern Utah. This beetle also attacks limber, whitebark, pinyon, lodgepole, bristlecone and Mexican white pines, and occasionally Englemann and blue spruces throughout its range in South Dakota, Wyoming, Colorado, Utah, northern Arizona and New Mexico. It seldom produces broods in spruces, because the parent and young brood are usually "pitched-out." This insect has been known to recur periodically in stands of overmature ponderosa pine.

The Demonstration Of Humoral Antibodies Against Eimeria Bovis In Cattle, Lyle Lowder

Biology

Cattle are rarely free of coccidia (Marsh, 1938). It is estimated that this disease is responsible for an annual loss of 10 million dollars in the cattle industry; which is second only to the loss caused by liver flukes among internal parasites. The mortality was conservatively estimated to be as high as 29.1 percent in several outbreaks of bovine coccidiosis (Agriculture Research Service, 1954).

The Site Of The Immune Reaction Against Eimeria Bovis In Calves And The Demonstration Of Antibodies By Immunofluorescence, Ferron L. Andersen

Biology

In 1959 Senger et al. reported that calves which had received a small oral inoculation of Eimeria bovis oocysts were later resistant to larger challenge inoculations. In an investigation on the mechanism of this immune reaction, Hammond et al. (1959) compared the number and size of E. bovis schizonts in immunized and nonimmunized calves, but found no significant difference in the results. They conducted 3 experiments using 28 young male Holstein-Friesian calves, and killed the majority of these calves for examination 17 to 20 days after the challenge inoculation.

Influence Of Some Environmental Factors On Black Hills Beetle Population Trends, Mark D. Mcgregor

Biology

The Black Hills beetle, Dendroctonus ponderosae Hopk. is the most destructive insect of ponderosa pine, Pinus ponderosa Laws., on the Dixie National Forest and in Bryce Canyon National Park in southern Utah. This beetle also attacks limber, whitebark, pinyon, lodgepole, bristlecone and Mexican white pines, and occasionally Englemann and blue spruces throughout its range in South Dakota, Wyoming, Colorado, Utah, northern Arizona and New Mexico. It seldom produces broods in spruces, because the parent and young brood are usually "pitched-out." This insect has been known to recur periodically in stands of overmature ponderosa pine.

The Demonstration Of Humoral Antibodies Against Eimeria Bovis In Cattle, Lyle Lowder

Biology

Cattle are rarely free of coccidia (Marsh, 1938). It is estimated that this disease is responsible for an annual loss of 10 million dollars in the cattle industry; which is second only to the loss caused by liver flukes among internal parasites. The mortality was conservatively estimated to be as high as 29.1 percent in several outbreaks of bovine coccidiosis (Agriculture Research Service, 1954).

Leaf Ribonuclease Activity As Related To Virus Infection, And Ribonucleic Acid Concentration, Andrew Chien-Yau Hsu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ribonucleic acid (RNA) appears to be the entity responsible for infectivity and genetic continuity in certain plant, animal and bacterial viruses. RNA also plays an important role in protein synthesis. The enzymes which are involved in RNA synthesis and degradation have received much attention. Among these enzymes ribonuclease (RNase) has been most thoroughly studied Rnase is widely distributed and has been isolated from many sources such as snake venom, bacteria, the pancreas, and many plant and animal tissues. Most studies with RNase have been concerned with its role in the hydrolysis of RNA in vitro. Therefore, it has generally been …

Factors Influencing Elk Distribution On Willow Creek Summer Range, Utah, Duane Eldro Jeffery

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study is aimed at gaining a better understanding of the factors responsible for the distribution of elk on summer range, and an analysis of characteristics of preferred habitat. Such knowledge should prove of value in elk management, both in better managing elk herds themselves, and in coordinating their needs with those of other land uses.

Effect Of Forage Height Upon The Microtemperature Of A Grass-Legume Pasture And A Comparison Of Forage Composition, Robert E. Warnick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The use of pasture to provide low cost feed for dairy and other farm animals is an important factor in the success of livestock operations.

Some of the factors which influence the income from pasture land are: management, pasture mix, and climate. The management of a pasture can determine to a great extent the value of pasture in a farming enterprise. Irrigating the pasture at the right time, using the right fertilizer, and proper methods of harvesting are examples of some of the management problems facing the grassland farmer.

The Respiratory Chain Involved In Oxidative Phosphorylation On Higher Plants In Relation To Carbon Dioxide-Bicarbonate Inhibition, Wan-Jean Young

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Increased concentrations of CO₂ with the accompanying high bicarbonate level in the culture medium have been reported to have a depressing effect in certain plant species on growth (34), respiration (23, 33), oxidative phosphorylation (9), mineral nutrient absorption (17), certain enzymatic reactions (4, 22, 27), accumulation of organic and amino acids (11), and protein synthesis (16). Since accumulation of organic acids occurs in lime-induced chlorotic tissue together with a depression in the respiration of plant tissue, an effect on the energy transfer mechanism of such plants is suspected. Inhibition of electron transfer from the substrate level could result in …

Biosynthesis Of Infectious Cucumber Mosaic Virus Ribonucleic Acid In A Cell-Free Medium, Men Hui Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mechanism of biosynthesis of the nucleic acids, RNA, remained obscure until 1955 when the announcement was made (14) that an enzyme isolated from bacterial sources catalyzes the synthesis of ribopolynucleotides from nucleoside-5'-diphosphates. It has been shown that the biosynthesis of polynucleotides occurs through the stepwise polymerization of nucleoside-5'-diphosphates or triphosphates. A great deal of research over the past few years has indicated that isolated nuclei from both animal (1) and plant (19) sources are able to synthesize ribonucleic acids in vitro (18).

Infrared Spectroscopy As Applied To The Study Of Biochemical Changes Induced By Tobacco Mosaic Virus In Leaf Cells, Banavara Krishnappa Chandrasekhar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The biochemical reactions occurring during the early stages in the infection cycle of a plant virus are still unknown. Many studies involving bacteriophage and animal viruses that have been made in recent years have provided evidence of the nature of virus infection, but these have not been of much value in understanding the nature of plant viruses. Infrared spectroscopy applied to the study of viral infection processes by Chochran and his co-workers (1960, 1962) have given some clues about the nature of biochemical changes taking place in the leaf tissues as a result of infection with cucumber mosaic virus and …