A comparison of commercially available feeds for rabbits, guinea pigs, chinchillas and degus with evidence of their diet and feeding behaviour in natural habitats

INTRODUCTION

A large variety of pet feeds is commercially available for pet herbivores; these feeds may differ in nutrient composition from the natural diet, and may trigger different feeding behaviours than observed in natural habitats. Here, we surveyed literature on the natural diet and activity budget of rabbits (Oryctolagus cuniculus), guinea pigs (Cavia porcellus), chinchilla (Chinchilla lanigera) and degus (Octodon degus), as well as 260 compound feeds commercially available for these species between 1982 and 2020. The species are classified as herbivores, with available data on natural diets suggesting a crude fibre (CF) level of approximately 250 g/kg dry matter (DM), natural feeding activity at a magnitude of 4-7 h per day, with distinctively shorter feeding when fed on compound pet feeds. Only for a minority of feeds did the first 5 listed ingredients not include a starchy ingredient, or only ingredients not considered suitable for human consumption. The percentage of feeds whose CF level was less than 150 g/kg DM was 22 % for production rabbits, 18 % for pet rabbits, 26 % for guinea pigs, 18 % for chinchillas and 14 % for degus; in other words, a majority of currently marketed products have CF levels in accord with published recommendations, even if that means a discrepancy to natural diets. Screening the producers' feeding instructions suggests they should generally not be followed uncritically. No temporal trends in the CF levels of these diets was evident. There is no consensus whether only products resembling natural diet items should be included in pet feeds, or whether vegetable byproducts not edible by humans should also be included. The observed practice of pet feed composition largely did not follow either concept, questioning the general rationale of pet feed composition. Whole forage like hay is recommended as the main diet component for these species, and 76 % of pet feed products noted that hay should be fed in the feeding instructions.

Mapping the Roles of Nutrition and Dietetics Professionals in Sustainable Food Systems and Exploring Opportunities for Strategic Collaboration

Current food systems drive environmental damage, social injustices, and undermine health, and these challenges are complex and seemingly intractable. Collaboration is required to transition to more sustainable food systems (SFS). Registered Dietitians and Nutritionists (RDs) are an under-leveraged and well-positioned group to contribute to addressing food systems challenges because of their locations in the system and their existing skillsets. Drawing on research with dietitians, this perspective paper presents both a theoretical proposal as well as collective expertise in supporting sustainable development of the global food system. It highlights where RDs work in food systems with the aim to reveal multiple points of entry where RDs can and do contribute to SFS across food systems, approaches to apply, as well as opportunities for collaboration within and beyond the profession. Educational and societal barriers exist that prevent systematic RD engagement; however, examples of established work provide models to follow.

[For more eco-friendly care]

The word given to the teams, caregivers and patients who, in the field, carry out reflections and initiatives in favor of sustainable development reflects their commitment. It is an educational and institutional challenge and a strong individual and collective awareness that is expressed.

Sustained quality improvement in outcomes of preterm neonates with a gestational age less than 29 weeks: results from the Evidence-based Practice for Improving Quality Phase 3 1

Quality improvement initiatives in neonatology have yielded positive results; however, few programs have demonstrated sustainability. We evaluated an ongoing, national quality improvement initiative (Evidence-based Practice for Improving Quality Phase 3 (EPIQ-3)) on outcomes of preterm neonates with a gestational age (GA) of 22⁰-28⁶ weeks (i.e., from 22 weeks and 0 days of gestation to 28 weeks and 6 days of gestation). Data from 7459 neonates admitted to 25 Canadian centers between 2013 and 2017 were studied. Trends in mortality and major morbidities were evaluated. The number of neonates with a GA of 22⁰-23⁶ weeks increased from 90 in 2013 to 139 in 2017 without a significant change in any other GA categories. In the entire cohort, the odds of composite outcome of mortality or any major morbidity (adjusted odds ratio (AOR) 0.72, 95% confidence interval (CI) 0.61-0.84) and of necrotizing enterocolitis (AOR 0.66, 95% CI 0.49-0.89) were lower in 2017 than in 2013. When calculated per year, the odds of composite outcome (AOR 0.93, 95% CI 0.89-0.97) and odds of necrotizing enterocolitis (AOR 0.89, 95% CI 0.82-0.96) decreased significantly. Among the subgroup of neonates with a GA of 26⁰-28⁶ weeks, the odds of composite outcome (AOR 0.63, 95% CI 0.51-0.79), necrotizing enterocolitis (AOR 0.44, 95% CI 0.26-0.73), and nosocomial infection (AOR 0.64, 95% CI 0.49-0.84) were reduced. The collaborative, multidisciplinary, nationwide EPIQ-3 program improved outcomes of preterm neonates, and the improvement was sustainable over 5 years.

Production of Bacillus amyloliquefaciens OG and its metabolites in renewable media: valorisation for biodiesel production and p-xylene decontamination

Biosurfactants are important in many areas; however, costs impede large-scale production. This work aimed to develop a global sustainable strategy for the production of biosurfactants by a novel strain of Bacillus amyloliquefaciens. Initially, Bacillus sp. strain 0G was renamed B. amyloliquefaciens subsp. plantarum (syn. Bacillus velezensis) after analysis of the gyrA and gyrB DNA sequences. Growth in modified Landy's medium produced 3 main recoverable metabolites: surfactin, fengycin, and acetoin, which promote plant growth. Cultivation was studied in the presence of renewable carbon (as glycerol) and nitrogen (as arginine) sources. While diverse kinetics of acetoin production were observed in different media, similar yields (6-8 g·L^-1) were obtained after 72 h of growth. Glycerol increased surfactin-specific production, while arginine increased the yields of surfactin and fengycin and increased biomass significantly. The specific production of fengycin increased ∼10 times, possibly due to a connecting pathway involving arginine and ornithine. Adding value to crude extracts and biomass, both were shown to be useful, respectively, for the removal of p-xylene from contaminated water and for biodiesel production, yielding ∼70 mg·g^-1 cells and glycerol, which could be recycled in novel media. This is the first study considering circular bioeconomy to lower the production costs of biosurfactants by valorisation of both microbial cells and their primary and secondary metabolites.

Supporting southern-led research: implications for North-South research partnerships

BACKGROUND

Global health research partnerships are commonly led by Northern investigators who come from resource-rich research environments, while Southern partners participate with a paucity of research skills and resources. This power asymmetry within North-South research partnerships may further exacerbate the unequal distribution of benefits from the research process.

METHODS

This study is designed to present the benefits and challenges of engaging in the research process from the perspective of The AIDS Support Organization (TASO), an HIV/AIDS care and treatment organization that has been involved in global health research partnerships. It uses a validated research tool entitled "Is Research Working for You?" to facilitate qualitative interviews surrounding the experienced benefits and challenges in engaging in the research partnerships as described by TASO staff.

RESULTS

Three key themes emerged from the content and thematic analysis: 1) the reported benefits of research (e.g., evidence-based management, advocacy, etc.), 2) the challenges the research committee members face in becoming more involved in the research process (e.g., lack of data analysis skill, lack of inclusion in the research process, etc.), and 3) the institutional ambition at TASO to develop a Southern-led research agenda.

CONCLUSIONS

This is one of the few studies to document the development of a Southern-led research agenda in addition to the challenges of engaging in the research process. Mechanisms for moderating power dynamics within North-South partnerships can provide opportunities for improved research capacity and quality.