Background: Antimicrobial stewardship is currently not mandatory as part of the undergraduate training of pharmacists. Identifying gaps in knowledge and a better understanding of pharmacy students' perceptions about antimicrobial stewardship could assist in recommendations for appropriate changes to the pharmacy degree curricula that may lead to more appropriate use of antimicrobials, within the multidisciplinary team. Methods: A descriptive quantitative study with a survey design was conducted at the eight universities offering the pharmacy degree in South Africa. An electronic questionnaire with four main categories on antimicrobial stewardship was administered to final (fourth) year pharmacy students (June-August 2015). Results: An overall response rate of 26.6% (n = 260) was obtained from 978 students, despite a weekly reminder. Most of the respondents were familiar with antimicrobial stewardship programmes in South Africa (71.9%), and claimed to know what antimicrobial stewardship is (83.5%) with significant differences between the universities (p < 0.001). Only 37.7% of the respondents recalled having had formal training on antimicrobial stewardship, with responses from the eight universities differing significantly (p < 0.001). However, almost all respondents (98.5%) felt that a strong knowledge of antimicrobials was important for their future career, with 90.0% indicating that they would like more training on antimicrobial stewardship at undergraduate level. Conclusion: There were significant differences between the eight universities with regards to undergraduate education on antimicrobial stewardship. In order to help prevent antimicrobial resistance, efforts should be made to introduce concepts of antimicrobial stewardship into the undergraduate pharmacy curricula to promote better use of antimicrobials and prevent antimicrobial resistance.

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Background In-field measurement of yield and growth rate in pasture species is imprecise and costly, limiting scientific and commercial application. Our study proposed a LiDAR-based mobile platform for non-invasive vegetative biomass and growth rate estimation in perennial ryegrass ( Lolium perenne L.). This included design and build of the platform, development of an algorithm for volumetric estimation, and field validation of the system. The LiDAR-based volumetric estimates were compared against fresh weight and dry weight data across different ages of plants, seasons, stages of regrowth, sites, and row configurations. Results The project had three phases, the last one comprising four experiments. Phase 1: a LiDAR-based, field-ready prototype mobile platform for perennial ryegrassrecognition in single row plots was developed. Phase 2: real-time volumetric data capture, modelling and analysis software were developed and integrated and the resultant algorithm was validated in the field. Phase 3. LiDAR Volume data were collected via the LiDAR platform and field-validated in four experiments. Expt.1: single-row plots of cultivars and experimental diploid breeding populations were scanned in the southern hemisphere spring for biomass estimation. Significant ( P < 0.001) correlations were observed between LiDAR Volume and both fresh and dry weight data from 360 individual plots (R 2 = 0.89 and 0.86 respectively). Expt 2: recurrent scanning of single row plots over long time intervals of a few weeks was conducted, and growth was estimated over an 83 day period. Expt 3: recurrent scanning of single-row plots over nine short time intervals of 2 to 5 days was conducted, and growth rate was observed over a 26 day period. Expt 4: recurrent scanning of paired-row plots over an annual cycle of repeated growth and defoliation was conducted, showing an overall mean correlation of LiDAR Volume and fresh weight of R 2 = 0.79 for 1008 observations made across seven different harvests between March and December 2018. Conclusions Here we report development and validation of LiDAR-based volumetric estimation as an efficient and effective tool for measuring fresh weight, dry weight and growth rate in single and paired-row plots of perennial ryegrass for the first time, with a consistently high level of accuracy. This development offers precise, non-destructive and cost-effective estimation of these economic traits in the field for ryegrass and potentially other pasture grasses in the future, based on the platform and algorithm developed for ryegrass. Electronic supplementary material The online version of this article (10.1186/s13007-019-0456-2) contains supplementary material, which is available to authorized users.

Background: Antimicrobial stewardship is currently not mandatory as part of the undergraduate training of pharmacists. Identifying gaps in knowledge and a better understanding of pharmacy students’ perceptions about antimicrobial stewardship could assist in recommendations for appropriate changes to the pharmacy degree curricula that may lead to more appropriate use of antimicrobials, within the multi-disciplinary team.Methods: A descriptive quantitative study with a survey design was conducted at the eight universities offering the pharmacy degree in South Africa. An electronic questionnaire with four main categories on antimicrobial stewardship was administered to final (fourth) year pharmacy students (June–August 2015).Results: An overall response rate of 26.6% (n = 260) was obtained from 978 students, despite a weekly reminder. Most of the respondents were familiar with antimicrobial stewardship programmes in South Africa (71.9%), and claimed to know what antimicrobial stewardship is (83.5%) with significant differences between the universities (p 0.001). Only 37.7% of the respondents recalled having had formal training on antimicrobial stewardship, with responses from the eight universities differing significantly (p 0.001). However, almost all respondents (98.5%) felt that a strong knowledge of antimicrobials was important for their future career, with 90.0% indicating that they would like more training on antimicrobial stewardship at undergraduate level.Conclusion: There were significant differences between the eight universities with regards to undergraduate education on antimicrobial stewardship. In order to help prevent antimicrobial resistance, efforts should be made to introduce concepts of antimicrobial stewardship into the undergraduate pharmacy curricula to promote better use of antimicrobials and prevent antimicrobial resistance.

Bile duct ligation in the pig results in ulceration of the pars oesophagea (oesophagogastric junction) within 48 h with 100% reproducibility. This work describes novel observations made during development of such ulcers using an endoscope introduced at intervals postoperatively via a Thomas gastric cannula. Macroscopic and histological changes were recorded and compared with quantitative and qualitative changes in crude mucus scrapings and purified mucins. Crude mucus scrapings of the cardiac gland region had a higher protein content in the ulcerated states than in the normals. After bile duct ligation, the (degraded) mucin glycopeptide/total protein ratio was higher in partially purified mucus from pre-ulcerated and ulcerated stomachs as compared with normal samples. The quantity of purified mucin was less in samples from ulcerated stomachs, and the N-acetylgalactosamine and fucose contents were also decreased. It is possible that these changes resulted in the failure of the mucus barrier and the development of oesophagogastric junction ulceration.