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Articles 1 - 8 of 8
Full-Text Articles in Medicine and Health Sciences
Variation In Avian Pathogenic Escherichia Coli Colonization Levels In Chickens, Melissa Monson, Michael Kaiser, Susan Lamont
Variation In Avian Pathogenic Escherichia Coli Colonization Levels In Chickens, Melissa Monson, Michael Kaiser, Susan Lamont
Melissa Monson
Colonization levels in five tissues after avian pathogenic Escherichia coli (APEC) inoculation were investigated in chickens to generate phenotypic data for a genome wide association study (GWAS). Bacterial loads were measured in 370 birds and varied among individuals and tissues. Mean bacterial levels were significantly different between tissues (right lung > spleen > left lung and liver > blood). There were also significant correlations in bacterial load between tissues. These data suggest that colonization levels could be used as phenotypes in GWAS and could help identify markers associated with poultry resistance to APEC infections. After verification, these markers could be used for genetic …
Association Of Different Iowa Livestock Truck Wash Stations Service Levels With Enterobacteriaceae Counts, Amber Danielson, Samaneh Azarpajouh, Anna Johnson, James Dickson, Locke Karriker, Rodney Baker, Christopher Rademacher, Troy Bigelow, Kenneth Stalder
Association Of Different Iowa Livestock Truck Wash Stations Service Levels With Enterobacteriaceae Counts, Amber Danielson, Samaneh Azarpajouh, Anna Johnson, James Dickson, Locke Karriker, Rodney Baker, Christopher Rademacher, Troy Bigelow, Kenneth Stalder
Samaneh Azarpajouh
Data from eighteen different truck washes were used to compare the association of different service levels with Enterobacteriaceae counts. Service levels were classified into three different categories; prewash (n=78), post wash with disinfectant (n=78), and post wash without disinfectant (n=12). A total of 168 drag swabs were used for collection for the purpose of this study. Prewash services were defined as trailers before they were scraped out and washed. Post wash with or without disinfectant services were defined as after the trailers were washed and disinfectant was or was not applied. Prewash trailers tended to have higher Enterobacteriaceae counts of …
Teaching Stress Physiology Using Zebrafish (Danio Rerio), Michael Cooper, Shree Dhawale, Ahmed Mustafa
Teaching Stress Physiology Using Zebrafish (Danio Rerio), Michael Cooper, Shree Dhawale, Ahmed Mustafa
Ahmed Mustafa Dr.
A straightforward and inexpensive laboratory experiment is presented that investigates the physiological stress response of zebrafish after a 5 °C increase in water temperature. This experiment is designed for an undergraduate physiology lab and allows students to learn the scientific method and relevant laboratory techniques without causing significant stress to animals. An additional experimental design and a set of additional questions for lab report are also included.
Assessment Of The Hemorheological Profile Of Koala And Echidna, Oguz Baskurt, Sonya Marshall-Gradisnik, Michael Pyne, Michael Simmonds, Ekua Brenu, Rhys Christy, Herbert Meiselman
Assessment Of The Hemorheological Profile Of Koala And Echidna, Oguz Baskurt, Sonya Marshall-Gradisnik, Michael Pyne, Michael Simmonds, Ekua Brenu, Rhys Christy, Herbert Meiselman
Sonya Marshall-Gradisnik
Koala, a marsupial, and echidna, a monotreme, are mammals native to Australia. Blood viscosity (62.5-1250 s-1), red blood cell (RBC) deformability, RBC aggregation, aggregability and surface charge, and hematological parameters were measured in blood samples from six koalas and six echidnas and compared to adult human blood. Koala had the largest RBC mean cell volume (107.7±2.6 fl) compared to echidna (81.3±2.6 fl) and humans (88.4±1.2 fl). Echidna blood exhibited the highest viscosity over the entire range of shear rates. Echidna RBC were significantly less deformable than koala RBC but more deformable than human RBC. Echidna RBC had significantly lower aggregability …
Haemorheology Of The Eastern Grey Kangaroo And The Tasmanian Devil, Michael Simmonds, Oguz Baskurt, Herbert Meiselman, Michael Pyne, Michael Kakanis, Ekua Brenu, James Keane, Rhys Christy, Sonya Marshall-Gradisnik
Haemorheology Of The Eastern Grey Kangaroo And The Tasmanian Devil, Michael Simmonds, Oguz Baskurt, Herbert Meiselman, Michael Pyne, Michael Kakanis, Ekua Brenu, James Keane, Rhys Christy, Sonya Marshall-Gradisnik
Sonya Marshall-Gradisnik
The blood of two Australian marsupials, the eastern grey kangaroo (Macropus giganteus) and the Tasmanian devil (Sarcophilus harrisii), has been reported to have greater oxygen-carrying capacity (i.e. haemoglobin content) when compared with that of placental mammals. We investigated whether alterations of blood rheological properties are associated with the increased oxygen-carrying capacity of these marsupials. Eastern grey kangaroos (n = 6) and Tasmanian devils (n = 4) were anaesthetised for blood sampling; human blood (n = 6) was also sampled for comparison. Laboratory measurements included blood and plasma viscosity, red blood cell (RBC) deformability, RBC aggregation and the intrinsic tendency of …
Phenotypic Divergence Despite High Levels Of Gene Flow In Galapagos Lava Lizards (Microlophus Albemarlensis), Mark Jordan, H. Snell, H. Snell, W. Jordan
Phenotypic Divergence Despite High Levels Of Gene Flow In Galapagos Lava Lizards (Microlophus Albemarlensis), Mark Jordan, H. Snell, H. Snell, W. Jordan
Mark A. Jordan
The extent of evolutionary divergence of phenotypes between habitats is predominantly the result of the balance of differential natural selection and gene flow. Lava lizards (Microlophus albemarlensis) on the small island of Plaza Sur in the Galápagos archipelago inhabit contrasting habitats: dense vegetation on the western end of the island thins rapidly in a transitional area, before becoming absent on the eastern half. Associated with these habitats are phenotypic differences in traits linked to predator avoidance (increased wariness, sprint speed, and endurance in lizards from the sparsely vegetated habitat). This population provides an opportunity to test the hypothesis that reduced …
Historical Fragmentation And Genetic Drift In Populations Of Galápagos Lava Lizards (Microlophus Albemarlensis Complex), Mark Jordan, H. Snell
Historical Fragmentation And Genetic Drift In Populations Of Galápagos Lava Lizards (Microlophus Albemarlensis Complex), Mark Jordan, H. Snell
Mark A. Jordan
No abstract provided.
Laboratory Routines Cause Animal Stress, Jonathan P. Balcombe, Neal Barnard, Chad Sandusky
Laboratory Routines Cause Animal Stress, Jonathan P. Balcombe, Neal Barnard, Chad Sandusky
Jonathan Balcombe, PhD
No abstract provided.