J A Pfister

Summary

Affiliation: Utah State University
Country: USA

Publications

  1. ncbi request reprint Effect of previous locoweed (Astragalus and Oxytropis species) intoxication on conditioned taste aversions in horses and sheep
    J A Pfister
    ARS USDA, Logan, UT 84341, USA
    J Anim Sci 85:1836-41. 2007
  2. ncbi request reprint Grazing of spotted locoweed (Astragalus lentiginosus) by cattle and horses in Arizona
    J A Pfister
    ARS, USDA Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 81:2285-93. 2003
  3. ncbi request reprint Conditioning taste aversions to locoweed (Oxytropis sericea) in horses
    J A Pfister
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 80:79-83. 2002
  4. ncbi request reprint Larkspur (Delphinium spp.) poisoning in livestock
    J A Pfister
    Poisonous Plant Research Laboratory, ARS, USDA, Logan, UT 84341, USA
    J Nat Toxins 8:81-94. 1999
  5. doi request reprint The effect of 7, 8-methylenedioxylycoctonine-type diterpenoid alkaloids on the toxicity of tall larkspur (Delphinium spp.) in cattle
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341
    J Anim Sci 90:2394-401. 2012
  6. doi request reprint The acute toxicity of the death camas (Zigadenus species) alkaloid zygacine in mice, including the effect of methyllycaconitine coadministration on zygacine toxicity
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 89:1650-7. 2011
  7. ncbi request reprint Three new toxic norditerpenoid alkaloids from the low larkspur Delphinium nuttallianum
    D R Gardner
    Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, 1150 E 1400 N, Logan, Utah 84341, USA
    J Nat Prod 63:1127-30. 2000
  8. doi request reprint A comparison of the metabolism of the abortifacient compounds from Ponderosa pine needles in conditioned versus naive cattle
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 90:4611-7. 2012
  9. doi request reprint Investigation of the susceptibility of various strains of mice to methyllycaconitine toxicosis
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 87:1558-64. 2009
  10. doi request reprint The effect of 7,8-methylenedioxylycoctonine-type diterpenoid alkaloids on the toxicity of methyllycaconitine in mice
    K D Welch
    USDA ARS, Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 86:2761-70. 2008

Collaborators

Detail Information

Publications29

  1. ncbi request reprint Effect of previous locoweed (Astragalus and Oxytropis species) intoxication on conditioned taste aversions in horses and sheep
    J A Pfister
    ARS USDA, Logan, UT 84341, USA
    J Anim Sci 85:1836-41. 2007
    ....
  2. ncbi request reprint Grazing of spotted locoweed (Astragalus lentiginosus) by cattle and horses in Arizona
    J A Pfister
    ARS, USDA Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 81:2285-93. 2003
    ..Although limited in scope, this study indicates that horses should not be exposed to spotted locoweed...
  3. ncbi request reprint Conditioning taste aversions to locoweed (Oxytropis sericea) in horses
    J A Pfister
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 80:79-83. 2002
    ....
  4. ncbi request reprint Larkspur (Delphinium spp.) poisoning in livestock
    J A Pfister
    Poisonous Plant Research Laboratory, ARS, USDA, Logan, UT 84341, USA
    J Nat Toxins 8:81-94. 1999
    ....
  5. doi request reprint The effect of 7, 8-methylenedioxylycoctonine-type diterpenoid alkaloids on the toxicity of tall larkspur (Delphinium spp.) in cattle
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341
    J Anim Sci 90:2394-401. 2012
    ..Consequently, both the amount of MSAL-type alkaloids and the amount of total alkaloids should be fully characterized to determine more accurately the relative toxicity of tall larkspur plant material...
  6. doi request reprint The acute toxicity of the death camas (Zigadenus species) alkaloid zygacine in mice, including the effect of methyllycaconitine coadministration on zygacine toxicity
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 89:1650-7. 2011
    ..As combined intoxications are most likely common, this information will be useful in further developing management recommendations for ranchers and in designing additional experiments to study the toxicity of death camas to livestock...
  7. ncbi request reprint Three new toxic norditerpenoid alkaloids from the low larkspur Delphinium nuttallianum
    D R Gardner
    Poisonous Plant Research Laboratory, Agricultural Research Service, United States Department of Agriculture, 1150 E 1400 N, Logan, Utah 84341, USA
    J Nat Prod 63:1127-30. 2000
    ..geyeri in sufficient quantities for toxicity testing. The toxicities of 1, 2, and 7 were found to be comparable to that of 4, with calculated LD(50) values in mice of 5.7, 3.3, and 6.2 mg/kg, respectively...
  8. doi request reprint A comparison of the metabolism of the abortifacient compounds from Ponderosa pine needles in conditioned versus naive cattle
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 90:4611-7. 2012
    ..Thus, an adaptation occurs to cattle conditioned to pine needles such that the metabolism AGA by the rumen microflora is altered...
  9. doi request reprint Investigation of the susceptibility of various strains of mice to methyllycaconitine toxicosis
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 87:1558-64. 2009
    ..This information would be useful for livestock producers in their breeding, culling, and grazing management programs to reduce or prevent larkspur poisoning on rangelands...
  10. doi request reprint The effect of 7,8-methylenedioxylycoctonine-type diterpenoid alkaloids on the toxicity of methyllycaconitine in mice
    K D Welch
    USDA ARS, Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 86:2761-70. 2008
    ..These results demonstrate that MDL-type alkaloids have an additive effect on MLA toxicity in mice and may also play a role in the overall toxicity of tall larkspur plants in cattle...
  11. ncbi request reprint Ponderosa pine and broom snakeweed: poisonous plants that affect livestock
    D R Gardner
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Nat Toxins 8:27-34. 1999
    ..This review includes the history of the problem, a brief description of the signs of poisoning, the research, to identify the chemical toxins, and current management practices on prevention of poisonings...
  12. ncbi request reprint Dose response of sheep poisoned with locoweed (Oxytropis sericea)
    B L Stegelmeier
    USDA ARS Poisonous Plant Research Laboratory, 1 150 East 1400 North, Logan, Utah 84341, USA
    J Vet Diagn Invest 11:448-56. 1999
    ..2 mg/kg, suggesting that prolonged locoweed exposure, even at low doses, results in significant production losses as well as histologic and functional damage...
  13. ncbi request reprint Evaluation of vaccination against methyllycaconitine toxicity in mice
    S T Lee
    USDA, ARS, Poisonous Plant Research Laboratory, Logan, Utah 84341, USA
    J Anim Sci 81:232-8. 2003
    ..Additional studies are warranted to continue development of potential larkspur vaccines for livestock...
  14. ncbi request reprint Locoweed (Oxytropis sericea)-induced lesions in mule deer (Odocoileius hemionus)
    B L Stegelmeier
    US Department of Agriculture, Agriculture Research Service, Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, UT 84341, USA
    Vet Pathol 42:566-78. 2005
    ..Histologic and immunohistochemical studies are required for a definitive diagnosis...
  15. doi request reprint Effect of body condition on consumption of pine needles (Pinus ponderosa) by beef cows
    J A Pfister
    USDA, ARS, Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 86:3608-16. 2008
    ..This study indicates that both body condition and protein intake are important factors in pine needle consumption...
  16. doi request reprint Effect of selenium concentration on feed preferences by cattle and sheep
    J A Pfister
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341
    J Anim Sci 91:5970-80. 2013
    ..When given Se pellets, initial responses were variable, but the results indicate that cattle and sheep adjusted their intake over time to avoid excessive intake of Se. ..
  17. doi request reprint The effect of body condition on serum concentrations of two teratogenic alkaloids (anagyrine and ammodendrine) from lupines (Lupinus species) that cause crooked calf disease
    S T Lee
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Anim Sci 86:2771-8. 2008
    ..The kinetic profiles suggest that body condition influenced the disposition of these alkaloids. This study also suggests that body condition may impact the risk of toxicity, teratogenicity, or both of these alkaloids...
  18. doi request reprint The role of the α7 subunit of the nicotinic acetylcholine receptor on motor coordination in mice treated with methyllycaconitine and anabasine
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, Utah 84341, USA
    J Appl Toxicol 33:1017-26. 2013
    ..Consequently other subunits of nAChRs found in the neuromuscular junction are likely the primary target for MLA and anabasine resulting in motor coordination deficiencies and acute toxicosis...
  19. doi request reprint The role of the α7 subunit of the nicotinic acetylcholine receptor in the acute toxicosis of methyllycaconitine in mice
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, USA
    J Appl Toxicol 33:1011-6. 2013
    ..Consequently other nAChR subunits of nAChRs found in the neuromuscular junction are probably the primary target for MLA and anabasine resulting in acute toxicosis...
  20. ncbi request reprint Locoweeds: effects on reproduction in livestock
    K E Panter
    Poisonous Plant Research Laboratory, USDA Agricultural Research Service, Logan, UT 84341, USA
    J Nat Toxins 8:53-62. 1999
    ..Neurological dysfunction also inhibited normal reproductive behavior, and some of these effects were permanent and progressive. In this article we briefly review the pathophysiological effects of locoweeds on reproduction...
  21. ncbi request reprint Analysis of toxic norditerpenoid alkaloids in Delphinium species by electrospray, atmospheric pressure chemical ionization, and sequential tandem mass spectrometry
    D R Gardner
    USDA, ARS, Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, Utah 84341, USA
    J Agric Food Chem 47:5049-58. 1999
    ..The tentative structure of the new alkaloids was predicted from the tandem mass spectra fragmentation patterns and assigning the substitution pattern for methoxy and acetyl groups at the C-14 and C-16 carbons...
  22. ncbi request reprint Predicting toxicity of tall larkspur (Delphinium barbeyi): measurement of the variation in alkaloid concentration among plants and among years
    M H Ralphs
    USDA ARS Poisonous Plant Lab, 1150 E 1400 North, Logan, Utah 84341, USA
    J Chem Ecol 28:2327-41. 2002
    ..76 to 0.99. This predictive equation can provide a tool for ranchers and land managers to make management decisions of when to graze cattle in larkspur areas...
  23. doi request reprint Comparison of the serum toxicokinetics of larkspur toxins in cattle, sheep and goats
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, Logan, UT 84341, United States Electronic address
    Toxicon 119:270-3. 2016
    ..The results from this study indicate that kinetic differences could partially explain species differences in susceptibility to larkspur toxicosis. ..
  24. doi request reprint Studies on the teratogenicity of anabasine in a rat model
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, 1150 E 1400 N, Logan, UT 84341, USA Electronic address
    Toxicon 87:32-7. 2014
    ..It is possible that in the rat model, anabasine administered orally via the chow may not result in sufficient reduction in fetal movement to cause the significant malformations observed in livestock species. ..
  25. doi request reprint The effect of low larkspur (Delphinium spp.) co-administration on the acute toxicity of death camas (Zigadenus spp.) in sheep
    K D Welch
    USDA ARS Poisonous Plant Research Laboratory, 1150 E 1400 N, Logan, UT 84341, USA Electronic address
    Toxicon 76:50-8. 2013
    ....
  26. doi request reprint White snakeroot poisoning in goats: Variations in toxicity with different plant chemotypes
    T Z Davis
    United States Department of Agriculture, Agricultural Research Service, Poisonous Plant Research Laboratory, 1150 E 1400 N, Logan, UT, USA Electronic address
    Res Vet Sci 106:29-36. 2016
    ..The results also demonstrate that white snakeroot populations vary chemically and toxicologically. ..
  27. doi request reprint Comparative oral dose toxicokinetics of selenium compounds commonly found in selenium accumulator plants
    T Z Davis
    USDA ARS, Poisonous Plant Research Laboratory, Logan, Utah 84341, USA
    J Anim Sci 91:4501-9. 2013
    ....
  28. ncbi request reprint Comparative effects of prolonged administration of cyanide, thiocyanate and chokecherry (Prunus virginiana) to goats
    B Soto-Blanco
    Departamento de Ciências Animais, Universidade Federal Rural do Semi Arido, Mossoró, RN, Brazil
    J Appl Toxicol 28:356-63. 2008
    ..These findings suggest the thyroid lesions can be attributed to thiocyanate, whereas the effects on the nervous system were most likely caused by cyanide...
  29. ncbi request reprint The effect of body condition on disposition of alkaloids from silvery lupine (Lupinus argenteus pursh) in sheep
    S Lopez-Ortiz
    Rangeland Ecology and Management Department, University of Idaho, Moscow 83844 1135, USA
    J Anim Sci 82:2798-805. 2004
    ....