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Tumor necrosis factor-α (TNF-α), nitric oxide (NO), and xanthine oxidase (XO) responses to endotoxin (LPS) challenge in steers: effect of progesterone (P4) and estradiol (E2) treatment. S. Kahl* and T. H. Elsasser, USDA, Agricultural Research Service, Beltsville, MD.


Prevalence of Chlamydophila spp. in randomly selected dairy farms in the western part of Germany. K. Kemmerling*1, U. Mueller1, M. Mielenz1, K. Sachse2, J. Winkelmann3, F. Jaeger4, and H. Sauerwein1, 1Insitute of Animal Science, Physiology & Hygiene Group, University of Bonn, Germany, 2Federal Research Institute for Animal Health, Jena, Germany, 3North-Rhine-Westphalian Chamber of Agricultural Matters, Roleber , Germany, 4North-Rhine-Westphalian Ministry of Enviroment, Conservation, Agriculture and Consumers Protection (MUNLV), Duesseldorf, Germany.


Growth, health, and select immunologic and metabolic functions of preruminant calves housed in warm and cold environments. B. J. Nonnecke*1, R. L. Horst1, M. R. Foote2, B. L. Miller3, T. E. Johnson3, and M. Fowler3, 1National Animal Disease Center, Ames, IA, 2Iowa State University, Ames, 3Land O'Lakes Research Farm, Webster City, IA.


Pasteurization of Colostrum Reduces the Incidence of Paratuberculosis in Neonatal Calves. J. R. Stabel*, USDA-ARS-NADC, Ames, IA.


Effects of pre- and postpartum feeding fish meal on total leukocyte and differential counts in transition and early lactating cows. A. Heravi Moussavi*1, M. Danesh Mesgaran1, T. Vafa1, and A. Soleimani2, 1Center of Excellence for Animal Science, Ferdowsi University of Mashhad, Mashhad, Khorasan Razavy, Iran, 2Azad University of Kashmar, Kashmar, Khorasan Razavy, Iran.


New intramammary infections during the dry period: The effect of short (30 days) vs. long (45 or 60 days) dry periods. A preliminary report. G. T. Church*1, L. K. Fox1, J. M. Gay1, C. T. Gaskins1, and C. S. Schneider2, 1Washington State University, Pullman, 2University of Idaho, Moscow.


Muscarinic receptors in the bovine gastrointestinal tract: mRNA expression and receptor binding in healthy cows and in cows with cecal dilatation-dislocation. E. C. Ontsouka*, R. M. Bruckmaier, A. Steiner, and J. W. Blum, University of Berne, Vetsuisse Faculty, Berne, Switzerland.


mRNA expression of motility-mediating receptors from the abomasum to the spiral colon of healthy cows and of cows suffering from left- sided abomasal displacement. E. C. Ontsouka*, M. Niederberger, A. Steiner, R. M. Bruckmaier, and M. Meylan, Vetsuisse Faculty, University of Berne, Berne, Switzerland.


The relationship between postpartum uterine bacterial infection (BI) and subclinical endometritis (SE). R. O. Gilbert*, N. R. Santos, K. N. Galvão, S. B. Brittin, and H. B. Roman, Cornell University, Ithca, NY.


The recurrence of mycoplasma mastitis investigated by bulk tank analysis. V. Punyapornwithaya*, L. K. Fox, D. D. Hancock, and J. M. Gay, Washington State University, Pullman.


Use of a calcium bolus to improve calcium homeostasis after calving. J. D. Sampson*1, J. N. Spain1, L. Carstensen2, and C. Jones3, University of Missouri, Columbia, 2Boehringer Ingelheim Denmark A/S, Copenhagen O, Denmark, 3Boehringer Ingelheim Vetmedica, Inc., St. Joseph, MO.



Dietary fish oil does not impact the response of early lactating cows to an endotoxic mastitis challenge. M. K. Yelle*, D. W. Kim, E. J. DePeters, and M. A. Ballou, University of California, Davis.


Escherichia coli lipopolysaccharide upregulates the expression of both toll like receptor 4 and 2 (TLR4 and TLR2) in cultured bovine


Joyce2, 1North Carolina Agricultural and Technical State University, Greensboro, 2Joyce Foods, Inc., Winston Salem, NC.


The effect of mushroom and pokeweed extract on Salmonella in molting hens. W. L. Willis*, O. Isikhuemhen, I. Goktepe, M. Reed, and C. Murray, North Carolina Agricultural and Technical State University, Greensboro.


Control of feral hog populations: a domestic pig model to attract and repel feral hogs using odors. N. Krebs, L. E. Hulbert*, and J. J. McGlone, Texas Tech University, Lubbock.


Adaptation of Angus steers to long-term heat stress in the field using controlled heat challenge. B. Scharf*, L. E. Wax, D. H. Keisler, and D. E. Spiers, University of Missouri, Columbia.


Dietary supplementation with omega-3 fatty acids affects sexual behavior in boars. M. J. Estienne* and A. F. Harper, Virginia Polytechnic Institute and State University, Suffolk.


Evaluation of physiological differences in heat tolerant (Romosinuano) and heat susceptible (Angus) Bos taurus cattle during controlled heat challenge. B. Scharf*1, L. E. Wax1, J. A. Carroll2, D. G. Riley3, C. C. Chase Jr.3, S. W. Coleman3, D. H. Keisler1, and D. E. Spiers1, University of Missouri, Columbia, 2USDA-ARS, Livestock Issues Research Unit, Lubbock, TX, 3USDA-ARS, SupTropical Agricultural Research Station, Brooksville, FL.


Animal Health - Livestock and Poultry Bovine II Exhibit Hall C

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