Genetic variation in specific root length in Scandinavian wheat and barley accessions   总被引：1，自引：0，他引：1  

Anne-Kristin Løes  Tara S. Gahoonia 《Euphytica》2004,137(2):243-249

Specific root length (SRL, m root g^–1 root dry matter) was studied in a broad selection of old and current accessions of spring wheat and barley from Norway and Sweden, at sub-optimal phosphorus conditions in nutrient solution and soil. The results indicated that genotype did not have a significant effect on SRL. A close relationship between root length (RL) and root weight (RW) was found, and more than 70% of the variation in root length was explained by root weight of representative and homogenous root samples. In nutrient solution, the relationship between RL and RW was described by the regression equations RL = 0.32 RW—0.19 (R ²= 0.74) for wheat and RL = 0.20RW + 0.73 (R ²= 0.56) for barley. In the soil experiment, the relationships between RL and RW were described by the equations RL = 0.15RW + 0.95 (R ²= 0.67) for barley and RL = 0.16 RW + 0.50 (R ²= 0.77) for wheat. Hence, in screenings of a large number of cereal genotypes, the root length may be estimated with good accuracy by records of root weight and an appropriate regression equation.  相似文献   

Pharmacokinetic profiles of amoxicillin trihydrate in freshwater crocodiles (Crocodylus siamensis) after intramuscular administration at two doses     

Saranya Poapolathep  Mario Giorgi  Narumol Klangkaew  Napasorn Phaochoosak  Narongsak Chaiyabutr  Tara Wongwaipairoj  Amnart Poapolathep 《Journal of veterinary pharmacology and therapeutics》2020,43(4):307-312

The aim of the present study was to elucidate the pharmacokinetic profiles of amoxicillin trihydrate (AMX) in Siamese freshwater crocodiles (Crocodylus siamensis). Crocodiles were administered a single intramuscular injection of AMX, at a dose of either 5 or 10 mg/kg body weight (b.w.). Blood samples were collected at preassigned times up to 120 hr. The plasma concentrations of AMX were measured using a validated liquid chromatography tandem-mass spectrometry method. AMX plasma concentrations were quantifiable for up to 72 hr (5 mg/kg b.w.) and 96 hr (10 mg/kg b.w.). The elimination half-life (t_1/2λz) of AMX following dosing at 5 mg/kg b.w. (8.72 ± 0.61 hr) was almost identical to that following administration at 10 mg/kg b.w (8.98 ± 1.13 hr). The maximum concentration and area under the curve from zero to the last values of AMX increased in a dose-dependent fashion. The average binding percentage of AMX to plasma protein was 21.24%. Based on the pharmacokinetic data, susceptibility break point, and the surrogate PK-PD index (T > MIC, 0.25 μg/ml), intramuscular administration of AMX at dose of 5 mg/kg b.w. every 4 days might be appropriate for the treatment of susceptible bacterial infections in freshwater crocodiles.  相似文献   

Characterization of a chloroquine‐induced canine model of pruritus and skin inflammation     

Amanda Blubaugh  Tara Denley  Frane Banovic 《Veterinary dermatology》2020,31(2):128-e22

  相似文献   

Diagnosis and treatment of demodicosis in dogs and cats     

Ralf S. Mueller  Wayne Rosenkrantz  Emmanuel Bensignor  Joanna Kara‐T&#x;cza  Tara Paterson  Michael A. Shipstone 《Veterinary dermatology》2020,31(1):4-e2

  相似文献   

Veterinaria Italiana Rivista Di Sant�� Pubblica Veterinaria ��One Health �� One Medicine�� �� linking human, animal and environmental health Volume 45 (1) �� January/March 2009     

Tara da Costa 《The Canadian veterinary journal. La revue veterinaire canadienne》2011,52(4):397

  相似文献   

Skin fragility syndrome in a cat with feline infectious peritonitis and hepatic lipidosis     

Trotman TK  Mauldin E  Hoffmann V  Del Piero F  Hess RS 《Veterinary dermatology》2007,18(5):365-369

A 6-year-old spayed female domestic shorthair cat with a 3-week history of inappetence, weight loss, and hiding was examined. A palpable abdominal fluid wave, dehydration, and a small tear on the left flank were noted during initial examination. When the cat was gently restrained for blood sampling, the skin on the dorsal neck tore, leaving a 15 cm x 7 cm flap of skin. Clinicopathological abnormalities included nonregenerative anaemia, hypoalbuminaemia, increased globulin concentration, and mildly elevated aspartate aminotransferase and alkaline phosphatase activities. Abdominal fluid was viscous and had a total protein of 5.3 g dL(-1) with 316 cells microL(-1), consistent with a modified transudate. Cytology of the abdominal fluid revealed 86% nondegenerate neutrophils, 13% macrophages, and 1% small lymphocytes. Histopathological evaluation and indirect immunohistochemistry confirmed a diagnosis of feline infectious peritonitis, hepatic lipidosis and feline skin fragility syndrome. Feline skin fragility syndrome has not previously been reported in association with feline infectious peritonitis (FIP). Its inclusion as a clinical sign associated with FIP may facilitate a diagnosis.  相似文献   

The Aquatic Acidification Index: A New Regulatory Metric Linking Atmospheric and Biogeochemical Models to Assess Potential Aquatic Ecosystem Recovery     

Richard D. Scheffe  Jason A. Lynch  Adam Reff  James T. Kelly  Bryan Hubbell  Tara L. Greaver  J. Travis Smith 《Water, air, and soil pollution》2014,225(2):1-15

This study compares a traditional agricultural approach to minimise N pollution of groundwater (incorporation of crop residues) with applications of small amounts of biodiesel co-product (BCP) to arable soils. Loss of N from soil to the aqueous phase was shown to be greatly reduced in the laboratory, mainly by decreasing concentrations of dissolved nitrate-N. Increases in soil microbial biomass occurred within 4 days of BCP application—indicating rapid adaptation of the soil microbial community. Increases in biomass-N suggest that microbes were partly mechanistic in the immobilisation of N in soil. Straw, meadow-grass and BCP were subsequently incorporated into experimental soil mesocosms of depth equal to plough layer (23 cm), and placed in an exposed netted tunnel to simulate field conditions. Leachate was collected after rainfall between the autumn of 2009 and spring of 2010. Treatment with BCP resulted in less total-N transferred from soil to water over the entire period, with 32.1, 18.9, 13.2 and 4.2 mg N kg^?1 soil leached cumulatively from the control, grass, straw and BCP treatments, respectively. More than 99 % of nitrate leaching was prevented using BCP. Accordingly, soils provided with crop residues or BCP showed statistically significant increases in soil N and C compared to the control (no incorporation). Microbial biomass, indicated by soil ATP concentration, was also highest for soils given BCP (p?<?0.05). These results indicate that field-scale incorporation of BCP may be an effective method to reduce nitrogen loss from agricultural soils, prevent nitrate pollution of groundwater and augment the soil microbial biomass.  相似文献   

Statewide modeling of bobcat, Lynx rufus, habitat in Illinois, USA     

Alan Woolf  Clayton K. NielsenTheodore Weber  Tara J. Gibbs-Kieninger 《Biological conservation》2002,104(2):191-198

We used sighting location and remotely sensed habitat data, multivariate statistical techniques, and a geographic information system to model bobcat (Lynx rufus) habitat in Illinois, thereby providing state wildlife managers with information to review the listing of bobcats as a state-threatened species and contribute to the development of a statewide management plan. We used canonical discriminant function analysis to model presence/absence and relative abundance of bobcats statewide. These models suggested that bobcats occurred in moderate to high abundance in 23 of 98 counties statewide (23%). We used stepwise logistic regression (SLR) analysis to model statewide habitat suitability. Spatial modeling of the SLR equation predicted that 29% of Illinois contained suitable habitat classified as P>0.50. Models were accurate when validated with an independent data set and indicated the importance of woods-related habitat variables to bobcats. In conclusion, these models provided tools to rapidly assess status that contributed to delisting bobcats as a threatened species in Illinois and provided further information to guide conservation efforts.  相似文献   

Bacterial flora on Cascades frogs in the Klamath mountains of California     

Tara Roth  Janet Foley  Joy Worth  Jonah Piovia-Scott  Karen Pope  Sharon Lawler 《Comparative immunology, microbiology and infectious diseases》2013

Amphibians are experiencing global declines due in part to the infectious disease chytridiomycosis. Some symbiotic bacteria residents on frog skin have been shown to inhibit the growth of Batrachochytrium dendrobatitis (Bd) but few studies have attempted to fully describe the resident bacterial flora of frog skin. We cultured and sequenced 130 bacterial isolates from frogs collected from the California Klamath Range, recovering predominantly Gram-negative bacteria from 20 higher order taxa and 31 genera. There were also a large number of unclassifiable isolates. Forty-three isolates were assessed for their ability to inhibit the growth of Bd in vitro; of these, two had strong and three had slight anti-Bd activity. We suggest that many bacterial species may play a secondary role in Bd resistance, acting synergistically with inhibitory species. Future research is required in order to characterize these interactions. Understanding the relationships between bacterial strains may be important in predicting and managing the effects of future anti-Bd treatments such as antimicrobial compounds or probiotic bacteria.  相似文献   

Retrospective evaluation of hyperosmolar hyperglycemia in 66 dogs (1993–2008)     

Tara K. Trotman VMD  DACVIM  Kenneth J. Drobatz DVM  MSCE  DACVIM  DACVECC  Rebecka S. Hess DVM  DACVIM 《Journal of Veterinary Emergency and Critical Care》2013,23(5):557-564

  相似文献