Untersuchungen über den Nährstoffbedarf und -gehalt der Luzerne in verschiedenen Entwicklungsstadien     

Erich Tellhelm 《Archives of Agronomy and Soil Science》2013,59(9):821-828

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Zucht vonSarcophaga carnaria L.(Dipt., Tachinidae) aus einer Freilandpopulation von Regenwürmern des GenusAllolobophora Eisen(Oligoch. Lumbrieidae) (Zur Kenntnis der GattungSarcophaga Mg. III)     

Erich Kirchberg 《Journal of pest science》1961,34(1):6-7

Summary S. carnaria was successfully reared from natural infected earthworms of a given population. 6% of the worms were parasitized by the fly. The possible role of this fleshfly as important factor influencing the populations of earthworms is discussed.  相似文献   

Ist die Bisamratte ein Fischschädling?     

Erich Blaser 《Journal of pest science》1953,26(2):26-27

Ohne Zusammenfassung  相似文献   

Cell biology. Extinguishing a cell cycle checkpoint     

Hoyt MA 《Science (New York, N.Y.)》2006,313(5787):624-625

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Effects of owner gender and interaction style on stress coping in human–dog dyads     

Iris Schöberl  Barbara Bauer  John Dittami  Erich Möstl  Manuela Wedl  Kurt Kotrschal 《Journal of Veterinary Behavior: Clinical Applications and Research》2009,4(2):91-92

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SIMSEPT – ein neues Prognosemodell zum Auftreten von Septoria tritici und Septoria nodorum     

Dietmar Roßberg  Eberhard Kluge  Erich Jörg 《Gesunde Pflanzen》2003,55(1):8-12

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Ribosomal RNA-based analysis of the bacterial flora from the conjunctivae of cattle with bovine keratoconjunctivitis (BKC)     

Hare WR  Hoyt PG  Hohn C  Higgins JA 《Veterinary microbiology》2008,131(3-4):358-368

Bovine keratoconjunctivitis (BKC), colloquially referred to as 'pinkeye', is a disease affecting cattle worldwide; it costs cattle producers millions of dollars in economic loss annually. While Moraxella spp. are the primary etiologic agent of pinkeye, surveys of flora from the conjunctivae of livestock from around the world have indicated that a variety of bacterial commensals occupy this niche. We used molecular biology-based methods to determine the composition of bacterial flora in the conjunctivae of normal dairy and beef cattle from Maryland (n=113), and beef cattle with clinical BKC from Louisiana (n=42). Three regimens were used: 16S rRNA PCR and DGGE analysis of amplicons; 16S rRNA PCR and cloning of amplicons into Escherichia coli followed by screening and sequencing of clones harboring inserts; and culture of bacteria on chromogenic agar followed by 16S rRNA PCR and sequencing. Most taxa were comprised of saprophytes found in the environment, such as Bacillus, Pantoea, E. coli, and Exiguobacterium. Moraxella spp. were infrequently observed. Some species, such as Propionibacterium acnes, represent taxa not previously associated with the conjunctivae. Bacillus pumilus and Bacillus licheniformis isolates from the conjunctivae of Maryland cattle were genetically distinct from isolates previously implicated in septic infections in cattle at the same location. We conclude that employing 16S rRNA-based methods for bacterial identification can be useful in defining the flora present in the conjunctivae of normal cattle, and those with BKC.  相似文献   

An integrative approach for analysing landscape dynamics in diverse cultivated and natural mountain areas   总被引：3，自引：1，他引：2  

Erich Tasser  Flavio V. Ruffini  Ulrike Tappeiner 《Landscape Ecology》2009,24(5):611-628

Our landscape can be regarded as a development process that is affected and subsequently shaped by a series of different environmental and human-induced factors. However, to date, concrete data about the impact of each of these factors are still missing. One key reason for this is that methods of acquisition and evaluation of these factors inherently have differences, thereby preventing meaningful comparative analyses. This study presents an integrative methodical approach that bridges many of these gaps. Our approach also has the advantages of being generally applicable while delivering easily interpretable results that also allow comparisons between diverse geographical regions. The indicators used enable all major features of landscape change, e.g. changes in land use, landscape structuring, habitat settings, and urban sprawl, to be accurately monitored and provide high-quality realistic results that were validated in our study site, South Tyrol (North Italy). Indicators were selected for both their further subdivision, e.g. monocrops and different features of mixed crops, and their easy to ascertain hierarchically structured feature classification, e.g. land cover. Furthermore, our use of ecoregions enables better comparison of aspects of landscape development for geographical regions having diverse socio-economic and ecological conditions. Our methodical approach can be used as a basis not only for creating landscape change scenarios, but also for determining the environmental and human-induced factors involved and being able to list them in order of importance. Further the detected striking difference between the mapped land-use data and the official census data suggests a validation of the methodical approach in context of the national agriculture census.  相似文献   

Oral vaccination of sexually mature pigs with Brucella abortus vaccine strain RB51     

Edmonds MD  Samartino LE  Hoyt PG  Hagius SD  Walker JV  Enright FM  Schurig GG  Elzer P 《American journal of veterinary research》2001,62(8):1328-1331

OBJECTIVE: To develop a novel oral vaccine delivery system for swine, using the rough vaccine strain of Brucella abortus. ANIMALS: 56 crossbred pigs from a brucellosis-free facility. PROCEDURE: In 3 separate experiments, pigs were orally vaccinated with doses of 1 x 10(9) to > 1 x 10(11) CFU of strain RB51 vaccine. The vaccine was placed directly on the normal corn ration, placed inside a whole pecan, or mixed with cracked pecans and corn. RESULTS: Oral vaccination of pigs with vaccine strain RB51 resulted in a humoral immune response to strain RB51 and short-term colonization of the regional lymph nodes. CONCLUSIONS AND CLINICAL RELEVANCE: A viscous liquid such as Karo corn syrup in association with pecans that scarify the oral mucosa are necessary when placing the live vaccine directly onto corn or other food rations. Doses of > 1 x 10(11) CFU of RB51 organisms/pig in this mixture ensures 100% colonization of regional lymph nodes via the oral route. This method may allow an efficient and economical means to vaccinate feral swine for brucellosis.  相似文献   

Energetic and kinematic consequences of weighting the distal limb     

Wickler SJ  Hoyt DF  Clayton HM  Mullineaux DR  Cogger EA  Sandoval E  McGuire R  Lopez C 《Equine veterinary journal》2004,36(8):772-777

REASON FOR PERFORMING STUDY: It is well known that adding a load to a horse's back increases its energetic costs of locomotion, but the magnitude of increase obtained by loading the most distal portion of limb has not been measured. OBJECTIVES: To measure oxygen consumption in horses with mass added to the back and hooves. Because such mass distribution alters inertial parameters of the limbs, kinematic measurements were made to quantify the magnitude of change in limb movement. METHODS: Steady-state oxygen consumption was measured in 6 horses with a load of 2.4 kg. The load was either carried on the back or distributed equally between the 4 limbs. Modified bell boots kept the mass at the level of P3. Horses trotted on a treadmill at speeds ranging from 2 to 5 m/sec (in 0.5 m/sec increments). High-speed (250 Hz) digital images were recorded in a sagittal plane and the positions of retroreflective markers located on standard positions on the limbs were digitised for kinematic analysis. RESULTS: Loading of the distal limbs produced a 6.7% increase in metabolic rate, an order of magnitude higher than when the mass was added over the back. Although the stride period was 2% longer in horses with loads on the distal limbs, time of contact and duty factor were not different. Distal limb loading increased the range of motion in hind- but not forelimbs. CONCLUSIONS: The costs of swinging the limbs in the horse are considerable and the addition of weights to the distal limb can have a profound effect on not only the energetics of locomotion but also the kinematics, at least in the hindlimb. POTENTIAL RELEVANCE: The use of weighted shoes, intended to increase animation of the gait, increases the metabolic effort of performance horses a disproportionate amount. The additional mass also increases the joint range of motion and, potentially, the likelihood of injury.  相似文献