Nutritive value of unconventional fibrous ingredients fed to Guinea pigs in the Democratic Republic of Congo

peer reviewedThe energy and protein value for Guinea pigs (GP) of 9 forages (7 dicots and 2 grasses) and 5 hay-based diets was determined. The apparent faecal digestibility of dry matter, organic matter, crude protein and energy was measured on GP housed in metabolic cages. The forages and the diets were digested in vitro using pepsin and pancreatin hydrolysis and gas fermentation test to simulate stomach, small intestine and large intestine, respectively. Most of the dicots had high digestible crude protein content (152–201 g/kg DM) and the 2 grasses showed lower values (80–85 g/kg DM). Digestible energy content of the forages ranged between 5.79 to 13.08 MJ/kg DM. None of the forage species or hay-based diets provided sufficient energy to supply the 11.7 MJ/kg metabolic energy requirements. The influence of intestinal fermentation on energy and protein values was highlighted by correlations (P<0.05) between in vivo and in vitro data, including gas fermentation. It is the first time that such relationships are reported in single-stomach animals

Student specialty plans, clinical decision making, and health care reform.

BACKGROUND AND OBJECTIVES: Health care reform aims to increase evidence-based, cost-conscious, and patient-centered care. Family medicine is seen as central to these aims in part due to evidence of lower cost and comparable quality care compared with other specialties. We sought evidence that senior medical students planning family medicine residency differ from peers entering other fields in decision-making patterns relevant to these health care reform aims. METHODS: We conducted a national, anonymous, internet-based survey of senior medical students. Students chose one of two equivalent management options for a set of patient vignettes based on preventive care, medication selection, or initial chronic disease management scenarios, representing in turn evidence-based care, cost-conscious care, and patient-centered care. We examined differences in student recommendations, comparing those planning to enter family medicine with all others using bivariate and weighted, multilevel, multivariable analyses. RESULTS: Among 4,656 surveys received from seniors at 84 participating medical schools, students entering family medicine were significantly more likely to recommend patient management options that were more cost conscious and more patient centered. We did not find a significant difference between the student groups in recommendations for evidence-based care vignettes. CONCLUSIONS: This study provides preliminary evidence suggesting that students planning to enter family medicine may already have clinical decision-making patterns that support health care reform goals to a greater extent than their peers. If confirmed by additional studies, this could have implications for medical school admission and training processes

Functional analysis of the foot and ankle myology of gibbons and bonobos

This study investigates the foot and ankle myology of gibbons and bonobos, and compares it with the human foot. Gibbons and bonobos are both highly arboreal species, yet they have a different locomotor behaviour. Gibbon locomotion is almost exclusively arboreal and is characterized by speed and mobility, whereas bonobo locomotion entails some terrestrial knuckle-walking and both mobility and stability are important. We examine if these differences in locomotion are reflected in their foot myology. Therefore, we have executed detailed dissections of the lower hind limb of two bonobo and three gibbon cadavers. We took several measurements on the isolated muscles (mass, length, physiological cross sectional area, etc.) and calculated the relative muscle masses and belly lengths of the major muscle groups to make interspecific comparisons. An extensive description of all foot and ankle muscles is given and differences between gibbons, bonobos and humans are discussed. No major differences were found between the foot and ankle musculature of both apes; however, marked differences were found between the ape and human foot. The human foot is specialized for solely one type of locomotion, whereas ape feet are extremely adaptable to a wide variety of locomotor modes. Apart from providing interesting anatomical data, this study can also be helpful for the interpretation of fossil (pre)hominids.status: publishe