4 research outputs found
Plant secondary compounds: Their impact on forage nutritive value and upon animal production
No full textBoth the anti-nutritional and beneficial effects of secondary compounds in a range of temperate and tropical forages have been reviewed. Major secondary compounds in temperate and tropical forage plants occur in the phenolic fraction and include condensed and hydrolysable tannins, phenolic monomers and lignin. Condensed tannins (CT) bind to plant protein by pH-reversible hydrogen bonding. In temperate legume forages this reduces rumen protein degradation and can increase the absorption of essential amino acids (EAA) from the small intestine, with reactivity depending on CT concentration, molecular weight and chemical structure. Low concentrations of CT in Lotus corniculatus (20-40g/kg DM) increased EAA absorption by 62% and increased wool growth (15%) and ovulation rate (25%) in grazing sheep and increased milk production in ewes and dairy cows, all without changing voluntary feed intake (VFI). High concentrations of CT in Lotus pedunculatus (80-100 g/kg DM) depressed VFI and depressed rates of body and wool growth in grazing sheep. Sulla, containing 80-120 g CT/kg DM, was particularly effective for counteracting the effects of parasitism and for promoting high rates of body growth in parasitised lambs. CT is present in tropical species such as Leucaena and Acacia at higher concentrations (60-200 g/kg DM) than in temperate species. Action of CT reduced rumen protein degradation in sheep fed tropical forages, but as yet there is no convincing evidence that this leads to increases in EAA absorption from the small intestine or that CT increases animal production. Further research is needed in these areas with tropical forages, particularly on the relationship between CT structure and its reactivity with proteins. Increasing CT concentration did not depress rumen microbial protein synthesis in sheep fed either temperate or tropical forages, until CT concentration exceeded 130 g/kg DM. Effect of CT upon undegraded, dietary protein release in the small intestine and upon endogenous protein secretion is defined as a future research area
Método y desarrollo de modelo de negocio para el ente gremial de microempresas del sector económico maderero de Santa Marta.
No full textEl presente trabajo tuvo como propósito identificar las herramientas necesarias para la elaboración de un modelo de negocio destinado a la asociación gremial de microempresas del sector maderero en la ciudad de Santa Marta. Para dar cumplimiento a este objetivo, se planteó una investigación basada en búsqueda de literatura, trabajo de campo, entrevistas y material de identificación de modelos de negocios, logrando una recolección de datos para su respectivo análisis, generando un resultado y conclusiones.The purpose of this study was to identify the tools needed to develop a business model for the trade association of micro-enterprises in the timber sector in the city of Santa Marta. To achieve this objective, research was conducted based on literature reviews, fieldwork, interviews, and material identifying business models, resulting in the collection of data for analysis, generating results and conclusions
Chronic pain and quality of life in schizophrenic patients
No full textOBJECTIVE: To identify the prevalence and characteristics of chronic pain in schizophrenic patients and to compare the quality of life in patients with and without chronic pain. METHODS: Crossover design with a probablistic sample of 205 adult schizophrenic outpatients (80% paranoid schizophrenia). Socio-demographic, psychiatric disorder, pain and quality of life (WHOQOL- brief) data were collected between June and September 2008. RESULTS: Mean age was 37 years, 65% were men, and the mean time spent in school was 9 years; 87% were single, 65% lived with parents and 25% had a job. Among patients with chronic pain, 70% did not receive treatment for pain. Regarding quality of life, patients with pain had more physical disabilities compared to those without pain (p < .001). There were no differences in other domains. Comparisons between patients with and without pain did not show any differences in how much they felt their mental health problems disabled them. Conclusion: Chronic pain was common in schizophrenic patients (similar to the general population of a similar age) and decreased their quality of life. It is necessary to pay more attention to this co-morbidity
