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Dissertations / Theses on the topic 'Toxicosis'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Hyun, Changbaig. "Molecular genetics of canine copper toxicosis /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16314.pdf.

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2

Meachum, Cynthia L. "The regulation of instrumental behaviour by toxicosis." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256395.

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3

Піхтірьова, Аліна Володимирівна, Алина Владимировна Пихтирева, Alina Volodymyrivna Pikhtirova, and E. Pecka-Kiełb. "Reasoning for phagoprophylaxis of food toxicosis of bacterial etiology." Thesis, Aluna, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81113.

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Пряма загроза здоров’ю та добробуту людей – бактерії та продукти їх життєдіяльності. Вони є причиною величезних економічних збитків спричинених зниженням працездатності людей та псуванням харчових продуктів. У епоху широкого та практично безконтрольного використання різноманітних (не завжди безпечних для людини) засобів для боротьби з бактеріальною забрудненістю, питання використання фагів з метою контролю бактеріального обсіменіння харчових продуктів стає особливо важливим. Бактерії мають безліч пристосувальних механізмів, здатні відносно швидко пристосовуватися до впливу бактеріоцидів та бак

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4

Gould, Lowell. "Genetic variation of susceptibility to fescue toxicosis in cattle." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-12232009-020514/.

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5

Kalinovska, I. V. "New methods of early prevention of toxicosis in pregnant women." Thesis, БДМУ, 2021. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/18717.

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6

Razer, Abby. "AMELIORATING THE EFFECTS OF FESCUE TOXICOSIS IN HEIFERS WITH BLESSED THISTLE." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/545.

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Fescue Toxicosis occurs when animals are fed or grazing on Tall Fescue (Festuca arundinacea) syn. (Lolium arudinacea [Schreb]) grass that is infected with the endophytic fungus Neotyphodium coenophialum (Bacon et al., 1977). This disease affects cattle, sheep, and horses causing reduced feed consumption, average daily gain (ADG), and reproductive performance (Hoveland, 2003). The disease is caused by ergot alkaloids within the fungus, which lives in the plant (Hoveland et al., 1980). Fescue toxicosis is a major concern because at least 35 million acres in the United States contain Tall Fesc

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7

Peacock, Rachel. "Intravenous lipid emulsion for the treatment of permethrin toxicosis in cats." Thesis, Peacock, Rachel (2014) Intravenous lipid emulsion for the treatment of permethrin toxicosis in cats. Masters by Research thesis, Murdoch University, 2014. https://researchrepository.murdoch.edu.au/id/eprint/22667/.

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Over the last decade, a growing interest has emerged in the use of intravenous lipid emulsions in the treatment of lipophilic drug toxicoses. Initial interest in the therapy was prompted by its successful use in rats and dogs for reversing the life-threatening cardiovascular effects of local anaesthetic overdoses. A postulated mechanism of action of intravenous lipid emulsion in lipophilic drug toxicoses is lipid partitioning, which is creation of an intravascular lipid compartment into which lipophilic drugs may be bound and sequestered away from their sites of action. Permethrin is a highly

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8

Wittmaack, Christiana. "Behavioral Criteria for the Diagnosis of Domoic Acid Toxicosis in Zalophus californianus." NSUWorks, 2014. http://nsuworks.nova.edu/occ_stuetd/143.

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Introduction California sea lion (Zalophus californianus) health is severely compromised by domoic acid toxicosis, which occurs in high levels during harmful algal blooms of Pseudonitzschia australis along the coast of California. Current diagnostic protocols are often inconclusive due to a 2-48 hour window of detectability within the urinary, circulatory, and gastric systems (Cook, et al. 2011 and Monte, Pers Comm, 2012). Past studies suggest that Z. californianus, with domoic acid toxicosis, commonly display abnormal behaviors (Goldstein, et al. 2008). However, many of these abnormal behavio

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9

Bhusari, Sachin. "Effects of fescue toxicosis and chronic heat stress on murine hepatic gene expression." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4334.

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Thesis (Ph. D.) University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on July 31, 2007) Includes bibliographical references.

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10

Кузьоменська, Марина Леонідівна, Марина Леонидовна Куземенская, Maryna Leonidivna Kuzomenska та Л. В. Мазило. "Применение препарата хофитол, при лечении рвоты беременности". Thesis, Издательство СумГУ, 2003. http://essuir.sumdu.edu.ua/handle/123456789/8813.

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11

Orrick, Samuel Ryan. "Evaluation of Blessed Thistle as an Ameliorator of Stress Response in Fescue-fed cows." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/544.

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The objectives of this study were to document the negative effects of endophyte-infected fescue consumption on cow physiological responses after stress challenge and to assess the ability of blessed thistle to ameliorate these responses. Twenty -seven Angus crossbred cows approximately 5-7 years of age and a body weight of (634 ± 80 kg) were equally divided into 3 treatments. Each treatment was divided into 3 replicates, leaving pens of 3 cows per treatment replicate. Each pen was balanced for initial body weight and low age. Each experimental group was randomly assigned to one of three replic

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12

Arthur, Kimberly Ann. "Pentobarbital Sleep Time in Mouse Lines Selected for Resistance and Susceptibility to Fescue Toxicosis." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/9694.

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In previous work with mouse lines selected for resistance (R) and susceptibility (S) to fescue toxicosis, R mice had higher activities of Phase II liver enzymes glutathione S-transferase and uridine diphosphate glucuronosyl-transferase than S mice. Objectives of this study were: 1. to determine whether selection for toxicosis response had also caused divergence between lines in hepatic Phase I enzyme activity (as assessed by sleep time following sodium pentobarbital anesthesia), 2. to determine whether sleep time differences between lines were modulated by fescue toxins or enzyme inducers in t

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13

Wagner, Catherine Ann Robertson. "Reproduction and Enzyme Detoxification Activities in Mouse Lines Selected for Response to Fescue Toxicosis." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/9783.

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In previous work, mouse lines were selected for resistance (R) or for susceptibility (S) to fescue toxicosis based upon reductions in post-weaning growth rate caused by an endophyte-infected diet. The first objective of the current experiment was to determine whether long term reproduction of S mice was more severely depressed than that of R mice by the toxic diet. The second objective was to quantify glutathione-S-epoxytransferase (GST) and uridine diphosphate glucuronosyl-transferase (UDPGT) activities in R and S dams form the experiment and to determine whether reproduction during continuou

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14

Сухарєв, Анатолій Борисович, Анатолий Борисович Сухарев, Anatolii Borysovych Sukhariev та Е. В. Абухаммаш. "Діагностичне значення визначення ряду біохімічних параметрів у оцінці тяжкості перебігу гестозу". Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/14880.

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Наявність у вагітних з гестозом гіпо- і диспротеїнемії, гіпоальбумінемії, гіперхолестеринемії, зниження рівня фракцій ліпопротеїдів крові, корелюють з важкістю перебігу даного ускладнення вагітності. Отримані дані дозволяють рекомендувати визначення ряду інтеграційних біохімічних параметрів крові для уточнення тяжкості перебігу гестозу. При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/14880

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15

Settivari, Raja Sekhar. "Temporal effects of fescue toxicosis and heat stress on rat physiology and hepatic gene expression." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4751.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on February 29, 2008) Vita. Includes bibliographical references.

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16

Buttrey, Sherri A. "Influence of Acremonium coenophialum on Festuca arundinacea growth, chemical composition, digestibility and tall fescue toxicosis." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54776.

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Infection of tall fescue (<i>Festuca arundinacea</> Schreb.) with the endophyte fungus (<i>Acremonium coenophialum</i>, Morgan-Jones and Gam) has been associated with toxicity symptoms observed in cattle. The overall objective was to investigate the influence of endophyte infection on growth and chemical composition of tall fescue and the toxicity of endophyte-infected (EI) tall fescue to cattle. In a greenhouse study with pairs of genetically identical EI and non-infected (NI) ‘Kenhy’ tall fescue clones, concentration of N, Ca, Mg, Al, B, Mn and Zn was higher and K and S was lower in NI, comp

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17

Schulze, Jamie L. "Evaluation of domperidone dosages and delivery methods for the treatment of fescue toxicosis in beef heifers /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1203561881&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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18

Rice, Rebecca. "Induction of anti-ergotamine antibodies in mice and steers and protection against fescue toxicosis in mice." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06062008-155524/.

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19

Douglas, Jamie Marguerite. "INVESTIGATING THE USE OF BLESSED THISTLE FOR AMELIORATION OF SYMPTOMS OF FESCUE TOXICITY IN BEEF COWS CONSUMING ENDOPHYTE-INFECTED TALL FESCUE SEED." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1781.

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The present investigation was designed to investigate the use of blessed thistle (Cnicus benedictus) in amelioration of fescue toxicosis in beef cattle. Twenty-seven crossbred Angus cows were blocked by age and weight into groups of three. Each group (n=9) was then randomly assigned to one of three dietary treatments: endophyte-free (EF), endophyte-infected (EI), or endophyte-infected with addition of cut and stemmed blessed thistle (EIBT). Each group was also randomly assigned to one of three 29-day replicates. Parameters measured during this trial included: urinary ergot alkaloid concentrati

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20

Blevins, Sarah. "Characterizing Compensatory Effects of Silymarin on Gossypol Toxicosis in Lines of Chickens Divergently Selected for Humoral Immune Response." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/34609.

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Feed costs are approximately 70% of total production cost for poultry producers. Poultry diets in the United States generally consist of 2 grains: corn and soybean meal. In recent years, the cost of these grains has dramatically increased. Due to these price increases, producers seek alternative feeds that provide adequate nutrition, and are also more affordable than â traditionalâ grains. Cottonseed meal is one alternative that is both affordable and an excellent source of crude protein. However, cottonseed meal contains gossypol, a pigment toxic to chickens. This study had two main object

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21

McClanahan, Linda Kay. "HAIR COAT AND STEROIDAL IMPLANT EFFECTS ON STEERS GRAZING NDOPHYTE-INFECTED TALL FESCUE DURING THE SUMMER." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/456.

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Sixty steers were grazed on toxic tall fescue for 104 days to determine the effects of hair coats and steroidal ear implants on physiological measurements. Steers were stratified by body weight and hair coat color for assignment to six, 3.0-ha pastures of 'Kentucky 31' tall fescue. Main plot treatments of either ten clipped or ten unclipped steers were randomly assigned to pastures. Five steers in each pasture were implanted with Synovex-S (200 mg progesterone-20 mg estradiol) and five were implanted with Compudose (25 mg estradiol) as sub-plot treatments. Hair growth rate averaged 0.29 mm/day

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22

Boland, Holly Terry. "Grazing Behavior of Beef Steers Grazing Endophyte-Infected, Endophyte-Free, and Novel Endophyte Infected Tall Fescue, and Lakota Prairie Grass." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34557.

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Endophyte infected Tall fescue (Festuca arundinacea Schreb.) is the most dominant grass used for pasture in the Southeastern U.S. As a result, fescue toxicosis is a major concern. Producers need alternative forages for grazing cattle that do not have this negative aspect. The objective of this experiment was to determine the grazing behavior of cattle grazing Lakota (L) prairie grass (Bromus catharticus Vahl.), endophyte infected (E+), endophyte free (E-), and novel endophyte (Q) tall fescues. Angus-crossbred steers (279Â±8 kg) steers wore electronic behavior data recorders in four sampling p

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23

Al-Tamimi, Hosam J. "Effect of nitric oxide donors on thermoregulation and performance of rats and cattle experiencing fescue toxicosis during heat stress /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3060086.

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24

Egert, Amanda M. "EFFECT OF DIETARY EXPOSURE TO ERGOT ALKALOIDS ON CONTRACTILITY OF BOVINE MESENTERIC VASCULATURE AND RUMEN MOTILITY." UKnowledge, 2014. http://uknowledge.uky.edu/animalsci_etds/40.

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Endophyte-infected (E+) tall fescue grass has been associated with fescue toxicosis, a costly syndrome characterized by poor cattle performance and health resulting in significant production losses. The fungal endophyte produces ergot alkaloids, which help the grass thrive in poor conditions but are toxic to mammals. A number of symptoms of fescue toxicosis can be related to vasoconstriction of bovine core, peripheral, and foregut vasculature. The first part of this series of experiments demonstrated ergot alkaloids were also vasoactive in midgut vasculature, with the exception of lysergic aci

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25

Gražienė, Aleksandra. "Padidėjusio laisvo trijodtironino poveikio ypatumai, esant normaliai tirotropinio hormono ir laisvo tiroksino koncentracijai." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120918_151340-85920.

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Įtariant skydliaukės patologiją rekomenduojama tirti tirotropinio hormono ir laisvo tiroksino koncentracijas kraujo serume. Laisvo trijodtironino tyrimas nėra įprastinis ir atliekamas kai nustatoma sumažėjusi tirotropinio hormono ir normali laisvo tiroksino koncentracija. Šio darbo tikslas - įvertinti padidėjusio laisvo trijodtironino poveikio ypatumus, esant normaliai tirotropinio hormono ir laisvo tiroksino koncentracijai. Uždaviniai – nustatyti ir įvertinti klinikinių simptomų ypatumus, objektyvaus tyrimo duomenis (odos būklę, skydliaukės padidėjimo laipsnį, širdies ir kraujagyslių sistemos

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26

Foote, Andrew P. "EFFECT OF ERGOT ALKALOIDS ON BOVINE FOREGUT VASCULATURE, NUTRIENT ABSORPTION, AND EPITHELIAL BARRIER FUNCTION." UKnowledge, 2013. http://uknowledge.uky.edu/animalsci_etds/18.

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Ergot alkaloids present in endophyte-infected (E+) tall fescue are thought to be the causative agent of fescue toxicosis, a syndrome affecting cattle in the eastern United States. Many of the observed signs of fescue toxicosis are thought to be attributed to peripheral vasoconstriction; however, there are data indicating that ergot alkaloids can alter blood flow to the gut. An experiment was conducted using right ruminal artery and vein collected from heifers shortly after slaughter. Vessels were mounted in a multi-myograph to determine the vasoconstrictive potentials of ergot alkaloids presen

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27

Carter, Jessica Meagan. "PERFORMANCE AND PHYSIOLOGY OF YEARLING STEERS GRAZING TOXIC TALL FESCUE AS INFLUENCED BY CONCENTRATE FEEDING AND STEROIDAL IMPLANTS." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/569.

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Fescue toxicosis can produce negative effects on animal weight gain and physiology. Sixty-four steers were grazed on endophyte-infected (E+) KY-31 tall fescue for 77 days in 2007 and sixty steers grazed for 86 days in 2008 to evaluate interactions with implantation of steroidal implants and concentrate feeding on performance and physiology of yearling steers. Steers were stratified by body weight for assignment to six, 3.0-ha toxic tall fescue pastures. The main plot treatment of with or without pelleted soybean hulls (SBH) were randomly assigned to pastures. Pelleted SBH were group-fed to pro

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28

Varga, Anita. "Use of Cardiac Troponin I for Early Detection of Myocardial Damage in Dairy Cows." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1229644005.

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29

Langford, Taylor Andrew. "Effects of fescue cultivar on performance of beef cows grazed on summer stockpiled tall fescue pastures." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/98813.

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This 2-yr experiment evaluated productivity of wild-type, endophyte-infected tall fescue (E+) and novel endophyte-infected tall fescue (NE) summer stockpiled (SS) pastures and the performance of fall-calving beef cow/calf pairs stocked on each cultivar. Fescue cultivars used were KY-31 and MaxQ for E+ and NE treatments, respectively. Pregnant Simmental x Angus cows (128 total, 64 each yr) were stratified by BW, BCS, and expected calving date and then allotted to 1 of 10 pasture groups within each yr (20 groups total, 10 per treatment). Forage growth was stockpiled from April until the initiati

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Wiesen, Liesl M. "Blood lead concentrations in the cat population of Tampa, FL." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001550.

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31

Li, Qing. "RESPONSES OF BOVINE PITUITARY TRANSCRIPTOME PROFILES TO CONSUMPTION OF TOXIC TALL FESCUE AND FORMS OF SELENIUM IN VITAMIN-MINERAL MIXES." UKnowledge, 2019. https://uknowledge.uky.edu/animalsci_etds/99.

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The first goal of the current research was to determine whether gene expression profiles differed between whole pituitaries of growing beef steers grazing pastures containing high (HE) or low (LE) amounts of toxic endophyte-infected tall fescue. The global (microarray analysis) and selected targeted (RT-PCR) mRNA expression patterns of pituitaries collected from beef steers (BW = 266 ± 15.5 kg) that had been randomly assigned to undergo summer-long grazing (89 to 105 d) of either HE (0.52 ppm ergot alkaloids) or LE (< 0.03 ppm ergot alkaloids) pastures were compared. Gene expression data were

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Johnson, Jennifer Michelle. "GRAZING EVALUATION OF A NOVEL ENDOPHYTE TALL FESCUE DEVELOPED FOR THE UPPER TRANSITION ZONE." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/111.

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A wild-type endophyte (Neotyphodium coenophialum [(Morgan-Jones & Gams) Glen Bacon & Hanlin]) that infects tall fescue [Lolium arundinaceum (Schreb.) Darbysh. = Schedonorous arundinaceum (Schreb.) Dumort.] imparts tolerances to moisture, heat, and grazing stresses, but also produces ergot alkaloids that adversely affect performance and physiology of cattle. Novel endophytes, developed by AgResearch Ltd. NZ, can sustain fescue persistence and productivity, but do not produce toxic ergot alkaloids. University of Kentucky Plant Breeder, T. D. Phillips Ph.D, developed a tall fescue experimental po

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Goff, Ben M. "STEER AND TALL FESCUE PASTURE RESPONSES TO GRAZING INTENSITY AND CHEMICAL SEEDHEAD SUPPRESSION." UKnowledge, 2012. http://uknowledge.uky.edu/pss_etds/10.

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Tall fescue (Lolium arundinaceum) is the principal cool-season species within pastures of the southeastern USA and is known to have a mutualistic relationship with a fungal endophyte (Neotyphodium coenophialum) that produces the ergot alkaloids responsible for tall fescue toxicosis. Management of the reproductive growth of tall fescue is necessary, as the seedheads contain the highest concentrations of ergot alkaloids, and livestock have been documented to selectively graze these tissues. Recently, the herbicide Chaparral™ has been shown to be an effective method to prevent seedhead production

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Koontz, Anne F. "EFFECTS OF ENDOPHYTE INFECTED FESCUE ALKALOID INGESTION ON ENERGY METABOLISM, NITROGEN BALANCE, IN SITU FEED DEGRADATION, AND RUMINAL PASSAGE RATES." UKnowledge, 2013. http://uknowledge.uky.edu/animalsci_etds/15.

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The decrease in productivity caused by fescue toxicosis has been estimated to cost the United States livestock industry more than $1 billion per year due to reduced growth and diminished reproductive efficiency. This goal of the research presented in this dissertation is to enhance the knowledge base concerning the underlying physiological changes that occur during fescue toxicosis that lead to reduced intake and weight gain in cattle. As one of the factors associated with fescue toxicosis is a reduction in feed intake, achieving a consistent and adequate intake of toxins can be a complication

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Rodrigues, Frederico Augusto Mazzocca Lopes. "Avaliação do potencial da monensina em predispor o acúmulo hepático de cobre em ovinos." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/10/10136/tde-06012015-101331/.

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Objetivou-se avaliar a influência da monensina sódica sobre o acúmulo hepático de cobre em ovinos. Haja vista, que ionóforos podem alterar a absorção, disponibilidade e distribuição tecidual de minerais em muitos tecidos do organismo. Foram utilizados 24 ovinos mestiços das raças Santa Inês x Dorper com média de três meses de idade e peso medio de 30 kg ao início do experimento, que receberam dieta basal calculada em 2,75% do peso corpóreo, sendo 50% de concentrado comercial (7,13 ppm de Cu) e 50% de feno de capim coast-cross (3,72 ppm de Cu) e 10 gramas de sal mineral (5,9 ppm de Cu). Os cord

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Bussard, Jessica R. "Evaluation of vascular changes in cattle relative to time-off endophyte-infected tall fescue." UKnowledge, 2012. http://uknowledge.uky.edu/pss_etds/7.

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Twenty-four steers were grazed on endophyte (Neotyphodium coenophialum)-infected [[Lolium arundinaceum (Schreb.) Darbysh]; E+] tall fescue (TF) and exposed to ergot alkaloids for an 106-d grazing period. Cattle were removed from pasture, placed in dry lots, and fed a non-toxic diet to evaluate changes in vascular contraction relative to time-off E+ TF pasture. Lateral saphenous veins (SV) were biopsied from steers at 0-, 21-, 42-, and 63-d off TF pasture and from 6 control steers at 0- and 63-d off bermudagrass (BG) pasture. To evaluate contractile response, biopsied SV were exposed to increas

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Jia, Yang. "FORMS OF SUPPLEMENTAL SELENIUM IN VITAMIN-MINERAL MIXES DIFFERENTIALLY AFFECT SEROLOGICAL AND HEPATIC PARAMETERS OF GROWING BEEF STEERS GRAZING ENDOPHYTE-INFECTED TALL FESCUE." UKnowledge, 2019. https://uknowledge.uky.edu/animalsci_etds/97.

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Consumption of endophyte-infected tall fescue results in a syndrome of negatively altered physiological systems, collectively known as fescue toxicosis. Another challenge to endophyte-infected tall fescue -based beef cattle operations is that the soils often are selenium (Se) poor, necessitating the need to provide supplemental Se. To test the general hypothesis that different forms of supplemental Se would ameliorate the negative effects of fescue toxicosis, predominately-Angus steers (BW = 183 ± 34 kg) were randomly selected from herds of fall-calving cows grazing an endophyte-infected tall

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Williamson, Jessica A. "Animal and Pasture Responses to Grazing Management of Chemically Suppressed Tall Fescue in Mixed Pastures." UKnowledge, 2015. http://uknowledge.uky.edu/pss_etds/57.

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Treatment of endophyte-infected tall fescue [Lolium arundinaceum (Schreb.) Darbysh] with the broad leaf herbicide Chaparral® can mitigate fescue toxicosis and enhance forage quality by suppressing seedhead emergence. Applying the herbicide to fescue pastures also reduces forage mass and promotes severe spot grazing when pastures are continuously grazed. A grazing experiment was conducted with steers (2013) and heifers (2014) to evaluate animal and plant responses in fescue-bluegrass (Poa pratensis L.) mixtures treated with Chaparral to determine the effects of grazing management on pasture car

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Snider, Miriam A. "ASSESSMENT OF BOVINE VASCULAR SEROTONIN RECEPTOR POPULATIONS AND TRANSPORT OF ERGOT ALKALOIDS IN THE SMALL INTESTINE." UKnowledge, 2017. https://uknowledge.uky.edu/animalsci_etds/79.

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Prior work using a contractility bioassay determined that the serotonin (5-HT) receptor subtype 5-HT2A is present in bovine lateral saphenous veins and plays a role in ergot alkaloid-induced vascular contraction in steers grazing endophyte-infected (Epichloë coenophiala) tall fescue (Lolium arundinaceum). A study was conducted to determine what 5-HT receptors are involved in vasoconstriction of bovine gut vasculature. The findings of this study indicate that 5-HT2A is present and may play a role in ergot alkaloid induced vasoconstriction. A second study was conducted to determine if ergot alka

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Teixeira, Claudia Poli de Almeida Barea. "Destruição de compostos potencialmente toxicos utilizando fotocatalise heterogenea." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258452.

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Orientador: Wilson de Figueiredo Jardim<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil<br>Made available in DSpace on 2018-07-23T00:26:58Z (GMT). No. of bitstreams: 1 Teixeira_ClaudiaPolideAlmeidaBarea_M.pdf: 9065840 bytes, checksum: c53b8d2d7e688d687aaa3f08ed329396 (MD5) Previous issue date: 1997<br>Resumo: Neste trabalho, o processo fotocatalítico foi estudado utilizando-se reatores anelares em fluxo ascendente, empregando dióxido de titânio suportado como catalisador. Na primeira parte do trabalho, utilizando fenol como composto teste, verific

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Coufal-Majewski, Stephanie. "Characterising the impact of ergot alkaloids on digestibility and growth performance of lambs." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17226.

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The negative impacts of ergot contamination of grain on the health of humans and animals were first documented during the fifth century AD. Although ergotism is now rare in humans, cleaning contaminated grain concentrates ergot bodies in screenings which are used as livestock feed. Ergot is found worldwide, with even low concentrations of alkaloids in the diet (<100 ppb total), reducing the growth efficiency of livestock. Extended periods of increased moisture and cold during flowering promote the development of ergot in cereal crops. Furthermore, the unpredictability of climate change may hav

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Nogueira, Raquel Fernandes Pupo. "Fotodestruição de compostos potencialmente toxicos utilizando TiO2 e luz solar." [s.n.], 1995. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249843.

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Orientador: Wilson de Figueiredo Jardim<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-07-20T07:38:20Z (GMT). No. of bitstreams: 1 Nogueira_RaquelFernandesPupo_D.pdf: 3277698 bytes, checksum: 3c76138e757276365dff0850d0d46995 (MD5) Previous issue date: 1995<br>Doutorado

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Kotaka, Elia Tie. "Contribuições para a construção de diretrizes de avaliação do risco toxicologico de agrotoxicos." [s.n.], 2000. http://repositorio.unicamp.br/jspui/handle/REPOSIP/309359.

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Orientador: Flavio Ailton Duque Zambrone<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-07-27T12:51:05Z (GMT). No. of bitstreams: 1 Kotaka_EliaTie_M.pdf: 3529273 bytes, checksum: 7100f870aa1976d91a6659242ec9b5d5 (MD5) Previous issue date: 2000<br>Resumo: O potencial de periculosidade à saúde humana, em conseqüência do uso de produtos químicos na agricultura, é avaliado antes da autorização de registro dos produtos agrotóxicos. A avaliação do risco toxicológico, isto é a probabilidade da ocorrência de danos, não

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Cartágenes, Maria do Socorro de Sousa. "Investigação dos efeitos toxicos e anti-hipertensivo de Arrabidaea chica Verlot (Bignoniaceae)." Universidade Federal da Paraíba, 2010. http://tede.biblioteca.ufpb.br:8080/handle/tede/6828.

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Made available in DSpace on 2015-05-14T13:00:05Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1889259 bytes, checksum: 410debc7d7792684f5e828a806b6f238 (MD5) Previous issue date: 2010-03-02<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The species Arrabidaea chica (Bignoniaceae) is indicated to treatment of skin illnesses, renal stones, systemic arterial hypertension, as an antiinflammation and antianemia. In this paper it was avaliated the toxical effect of the extract of leaves of Arrabidaea chica Verlot (EAC), the chemical composition of EAC and the performance of EAC

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Silva, Cristiano Mano da. "Dinamica de metais potencialmente toxicos no solo apos aplicação de lodo de esgoto." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258163.

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Orientadores: Edson Aparecido Abdul Nour, Ronaldo Severiano Berton<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-06T05:03:34Z (GMT). No. of bitstreams: 1 Silva_CristianoManoda_M.pdf: 1887536 bytes, checksum: 6deb8aff55ff36310624e75aa9310bb8 (MD5) Previous issue date: 2005<br>Resumo: A presente pesquisa teve por objetivo o estudo da dinâmica de seis metais potencialmente tóxicos ¿ Cd, Cr, Cu, Ni, Pb e Zn - em solo do tipo franco argiloso, que sofreu incorporação de lodo de esgoto em

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Reck, Junior José. "Caracterização do parasitismo por Ornithodoros brasiliensis (Chelicerata: Argasidae) e da toxicose induzida em humanos e animais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/33237.

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Carrapatos são artrópodos hematófagos com ampla distribuição mundial, sendo capazes de parasitar quase todos os animais vertebrados terrestres. Estes parasitos causam grandes impactos em saúde pública e na produção animal por serem vetores de diversas doenças infecciosas e, também, pelos distúrbios diretos associados ao parasitismo. O Ornithodoros brasiliensis, conhecido popularmente como carrapato mouro, é uma espécie de carrapato somente encontrada no Brasil, e com distribuição restrita à região dos Campos de Cima da Serra no Rio Grande do Sul (RS). Desde os primeiros relatos, O. brasiliensi

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Bortoletto, Maria Élide. "Tóxicos, civilização e saude : contribuição a analise dos sistemas de informações toxicos-farmacologicas no Brasil." reponame:Repositório Institucional do FGV, 1990. http://hdl.handle.net/10438/8096.

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Submitted by Marcia Bacha (marcia.bacha@fgv.br) on 2011-05-17T18:30:57Z No. of bitstreams: 1 000055180.pdf: 5728327 bytes, checksum: 58d84f046b42a9bdef2f35373df8a65f (MD5)<br>Approved for entry into archive by Marcia Bacha(marcia.bacha@fgv.br) on 2011-05-17T18:31:24Z (GMT) No. of bitstreams: 1 000055180.pdf: 5728327 bytes, checksum: 58d84f046b42a9bdef2f35373df8a65f (MD5)<br>Approved for entry into archive by Marcia Bacha(marcia.bacha@fgv.br) on 2011-05-17T18:31:32Z (GMT) No. of bitstreams: 1 000055180.pdf: 5728327 bytes, checksum: 58d84f046b42a9bdef2f35373df8a65f (MD5)<br>Made available in

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Espinosa, Piragua Edwin Herberth. "Desarrollo y fabricacion de sensores basado en nanotubos de carbono para la deteccion de gases toxicos." Doctoral thesis, Universitat Rovira i Virgili, 2008. http://hdl.handle.net/10803/8463.

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Hoy en día la monitorización del medio ambiente es una necesidad en todo el mundo, principalmente debido a la gran cantidad de gases tóxicos que emiten diariamente las industrias, como son óxidos de nitrógeno, dióxidos de azufre, vapores de benceno, y especies causantes de malos olores como los vapores de amoniaco o que indirectamente aumentan la concentración de ozono. Entre los dispositivos con capacidad de detectar trazas de gases se encuentran los sensores de gases de estado sólido, y sus principales ventajas se hallan en su tamaño reducido, su bajo coste comparado con las técnicas convenc

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Macedo, Denise Vaz de 1959. "Efeitos toxicos de Ca2+ e oxidantes de nucleotideos de peridina sobre mitocondrias de figado e cerebro." [s.n.], 1988. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313902.

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Orientador : Anibal Eugenio Vercesi<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-07-16T14:43:06Z (GMT). No. of bitstreams: 1 Macedo_DeniseVazde_M.pdf: 7486042 bytes, checksum: 6557fab1aa2a0dd941ebd6645a9172b8 (MD5) Previous issue date: 1988<br>Resumo: Os resultados apresentados neste trabalho indicam que as alterações no fluxo de Ca2+,causadas por oxidantes de nucleotídeos de piridina na presença deste íon, secundárias ao aumento de permeabilidade da membrana mitocondrial interna, são influenciadas por vários fatores

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RIBEIRO, MARCIA A. "Estudos sobre a remocao de metais toxicos em efluentes industriais apos a irradiacao com feixe de eletrons." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11002.

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Made available in DSpace on 2014-10-09T12:46:47Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:58:03Z (GMT). No. of bitstreams: 1 08355.pdf: 5737145 bytes, checksum: 41a2be955830f51bb6b1c0b324fc6c03 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP<br>FAPESP:00/00610-3

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