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Search Results: 1 - 10 of 221954 matches for " Efrén Ramírez-Bribiesca "
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Quality of life of patients with brucellosis in an endemic area of Mexico  [PDF]
Guillermina García-Juárez, Efrén Ramírez-Bribiesca, Luz M. Hernández-Calva, José D. Vázquez-Vázquez, Alfonso Pérez-Sánchez, Christine M. Budke
Health (Health) , 2012, DOI: 10.4236/health.2012.49090
Abstract: The aim of this study was to evaluate quality of life of patients infected with brucellosis compared to a control population from the same geographic region. The quality of life of brucellosis positive and brucellosis negative individuals from rural and urban areas of Mexico was evaluated using the Short-Form SF-36 Health Survey. This survey is a generic measure of physical and mental health-related quality of life. Data analysis was performed using one-way analysis of variance and the Tukey test. Brucellosis patients had lower overall quality of life compared with the controls. Brucellosis patients from rural areas had lower overall quality of life (P < 0.05) compared with brucellosis patients from urban areas. In conclusion, human brucellosis affects quality of life, with patients living in rural areas most severely impacted. This may be due to the lack of local public policies and programs for the prevention, diagnosis, and treatment of brucellosis.
Effect of breed type and ionophore supplementation on growth and carcass characteristic in feedlot hair lambs
Salinas-Chavira, Jaime;Lara-Juarez, Alfredo;Gil-González, Abraham;Jimenez-Castro, Jorge;Garcia-Castillo, Ramón;Ramírez-Bribiesca, Efrén;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000300024
Abstract: the effects of supplementing feedlot diets with ionophores and breed type were assessed on growth rate and carcass characteristics in hair lambs. twenty four intact males, 12 pelibuey × dorper (pdo) and 12 pelibuey × damara (pda) lambs, 17.9 ± 3.7 kg initial weight, were housed in individual pens for a 60-d feeding trial. the lambs were assigned randomly into four diets: control without additives (c); 25 μg/g monensin (m); 28 μg/g salinomycin (s); 28 μg/g s for 20 d, and 25 μg/g m for the next 40 d (sm). each diet was supplied to six lambs. data were analyzed as a randomized complete block design in a 4 × 2 factorial arrangement, with four diets and two breed types of hair lambs (pdo and pda). all diets were formulated to contain 14% cp and 2.6 mcal me/kg dry matter. at the end of the feeding trial carcass images were recorded in the last intercostal space (12th and 13th ribs) using ultrasound equipment to measure the longissimus dorsi muscle area and subcutaneous fat (sf). the average daily gain (adg), daily dry matter intake, feed:gain ratio, subcutaneous fat and longissimus dorsi area were not affected by ionophore supplementation.. the pelibuey × dorper group tended to show better average daily gain than pelibuey × damara (262 g/d and 235 g/d, respectively). daily dry matter intake, feed:gain ratio and subcutaneous fat were not affected by breed type. the pelibuey × dorper lambs had greater longissimus dorsi area (16.74 cm2) than the pelibuey × damara (14.29 cm2) lambs. the growth rate was not influenced by the inclusion of ionophores. pelibuey × dorper lambs showed better average daily gain and carcass characteristics than pelibuey × damara lambs.
Suplemento de selenio con bolos intrarruminales de selenito de sodio en ovinos
Revilla-Vázquez, Alma;Ramírez-Bribiesca, Efrén;López-Arellano, Raquel;Hernández-Calva, L. Marina;Tórtora-Pérez, Jorge;García-García, Elizabeth;Cruz Monterrosa, Rosy G.;
Agrociencia , 2008,
Abstract: as an alternative for giving a selenium supplement, intraruminal boluses of 3 and 10 g (total weight) were designed and tested in lambs and adult sheep. the ingredients were: sodium selenite (5.23%) as source of se; to regulate its release and maintain its mass and density, fe 68.77%; cutin 25%; magnesium stearate 1%. eight pelibuey lambs (6 months of age) were used in metabolic cages for 15 d. later, they received t type ruminal cannulas, and were fed a diet low in se (0.06 μg g -1); the treatments were as follows: a control group without se, and a group supplemented with bolus of se (3 g). in the performance trial test, 20 columbia ewes were used: 10 in the control group and 10 that received bolus (10 g). in the lambs, the bolus released se without affecting the ruminal ph (p>0.05). the model for the degradation of the bolus in time effect within the ruminal medium was: weight (g) = 3.0106 - 8-5(d) - 2-6(d)2, (r = 0.97). in the behavior test with the ewes, the bolus of se increased the concentrations of blood se by 22.6 and 72% at 60 and 90 d (p<0.05). it is concluded that the intraruminal bolus used in this assay constitutes an adequate and reliable technology for correcting the deficiency of se and maintaining adequate concentrations of se in sheep.
Effect of selenium-vitamin E injection in selenium-deficient dairy goats and kids on the Mexican plateau
Ramírez-Bribiesca, J.E.;Tórtora, J.L.;Huerta, M.;Hernández, L.M.;López, R.;Crosby, M.M.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2005, DOI: 10.1590/S0102-09352005000100011
Abstract: three experiments were carried out to determine the optimum selenium-vitamin e injection level to maintain acceptable blood selenium (se) status of does and kids, as well as to determine the relation of that status to mortality rates in kids. in experiment 1, 238 goats were assigned to one of three groups during the mating period: a1-control, a2- 0.06mgse+0.8iu vite/kgbw and a3-0.125mgse+1.7iu vite/kgbw. no differences (p>.05) for fertility and prolificacy were observed among the groups. blood se concentration did not differ among se-vit e groups and control group before injection, and both groups showed se deficient condition. there was a trend (p<.05, 32%) to increase se blood level 60 days post-treatment, but difference was not observed between a2 and control groups, while difference (p<.05; 103%) was observed between a1 and a2 groups vs high se injection (a3 group). in experiment 2, 48 goats were divided into four groups: b1- control, b2- 0.125mgse+1.7iu vite/kgbw, b3- 0.25mgse+3.4iu vite/kgbw and b4- 0.31mgse+4.2iu vite/kgbw. the b4 group reached the highest concentration at the third month after injection (0.11 ppm), then started to decline after 100 days, reaching a value slightly higher than b2 and b3 on the 135th day of pregnancy. results of b2 and b3 groups were slightly higher that those of b1 (p<0.05). in experiment 3, 194 kids (3 to 7 days postpartum) born from se-deficient goats were used to compare the effectiveness of se injection. they were divided into three groups: c1- control, c2- 0.3mgse+4.2iu vit e/kg bw and c3- 0.6mgse+8.4iu vit e/kg bw. c1 showed the highest percentage of mortality (60%) as compared to treated se groups, that scored equal percentage of deaths (22% averaged). the concentration of se in blood, on day 20th after the onset of the treatment rapidly increased, according with level of se injection. the 0.3mgse/kgbw se injection increased the blood se concentration in pregnant goats and it was effective to prevent white muscle diseas
Carotenoids digestion in african stargrass (Cynodon plectostachyus) determined with In Situ techniques in cattle
Cruz-Monterrosa, R.G.;Ramírez-Bribiesca, J.E.;Guerrero-Legarreta, M.I.;Hernández-Mendo, O.;
Tropical and subtropical agroecosystems , 2011,
Abstract: dry matter (dm) and total carotenoids disappearane in the rumen and intestinal passage of african stargrass (as) were measured in 4 holstein steers using rumen in situ and a mobile nylon bag technique in duodenum, respectively. a higher proportion of dm and total carotenoids (p<0.05) in the as disappeared in the rumen during first 12 h. correlation value between the disappearance of dm and total carotenoids in the rumen was 0.997 (p < 0.001). 53.0% of the carotenoids disappeared from the duodenal bags in the lower digestive tract when samples were not incubated in the rumen. carotenoids disappearance in small intestine was lower in the samples incubated in rumen. these results show an availability of 70.0% in carotenoids into the total digestive tract. in conclusion, the as has a high availability in the degradation of total carotenoids in the digestive tract of ruminants.
Effects of crossbreeding on carcass and meat quality of Mexican lambs
Hernández-Cruz, L.;Ramírez-Bribiesca, J.E.;Guerrero-Legarreta, M.I.;Hernández-Mendo, O.;Crosby-Galvan, M.M.;Hernández-Calva, L.M.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2009, DOI: 10.1590/S0102-09352009000200027
Abstract: twenty hair (pelibuey x katadin x blackbelly) and 20 wool (rambouillet x criollo) lambs were fattened in an intensive feeding system to reach 40kg body weight at ten months of age. the yield of lamb sides and back fat (51.9%, 2.5mm vs. 47.0%, 2.3mm) were greater in wool lambs. meat ph was not different between phenotypes but meat temperature was higher during the first hours postmortem in wool lamb sides (27, 23, and 20, vs. 24, 20, and 17oc). protein content in meat from the neck (braquicephalic and esternocephalic muscles) and loin (longissimus lumborum muscle) were higher in hair lambs (21.1 and 20.4 vs. 19.7 and 19.3 %), while moisture of the same muscles was higher in wool lambs (75.6 and 75.9 vs. 73.6 and 74.3%). ash content was similar in both phenotypes, but palmitoleic acid was greater in hair lambs (2.9 and 2.7 vs. 2.7 and 2.5%). in fresh meat, ph, meat toughness, and water activity (wa) of loin did not differ; but water holding capacity (whc) was higher in hair lambs, and the same response was observed for cooked meat toughness from the neck, and in raw and cooked meat from loin. there were differences in the colour of meat from the neck, having values for l*, b* and tonalities greater in wool lambs, and a* greater for hair lambs. sensorial parameters were similar in both phenotypes.
Brucelosis: condición socioeconómica familiar y calidad de vida en dos zonas contrastantes del estado de Tlaxcala, México
Guillermina García Juárez,Efrén Ramírez Bribiesca,Maricela Hernández-Vázquez,Hermila Orozco Bola?os
Estudios sociales (Hermosillo, Son.) , 2013,
Abstract: La brucelosis, o fiebre de Malta, es una enfermedad zoonótica ocasionada por la bacteria intracelular del género Brucella melitensis y Brucella abortus. En el estado de Tlaxcala los caprinos son los principales reservorios y los productos lácteos no pasteurizados ocasionan da os a la salud pública. En el a o 2008 se presentó una tasa de morbilidad de 4.78/100000 habitantes, con ello se ocupó el cuarto lugar a nivel nacional; al segundo bimestre del 2011 se pasó al primer lugar nacional. El objetivo del estudio fue analizar la condición socioeconómica familiar de los individuos afectados con brucelosis en las zonas rural y urbana, evaluando la calidad de vida. Los grupos de estudio fueron seleccionados por regionalización a través del programa Arc View-3.2. Se aplicaron dos cuestionarios con los siguientes propósitos: 1) analizar la condición socioeconómica de los grupos de estudio y 2)medir la calidad de vida en los individuos infectados y sanos, empleando el método de Rand Group. Los resultados mostraron que en la zona rural, de baja condición socioeconómica, había mayor incidencia de brucelosis, interrupción en tratamientos médicos, complicaciones médicas en los individuos enfermos, menor nivel educativo, menos servicios médicos y medicamentos. La calidad de vida de los individuos infectados con brucelosis fue menor, cuando se comparó con los grupos de individuos sanos.
Protein fractions and In Vitro fermentation of protein feeds for ruminants
Guevara-Mesa, A. L.;Miranda-Romero, L. A.;Ramírez-Bribiesca, J. E.;González-Mu?oz, S. S.;Crosby-Galvan, M. M.;Hernández-Calva, L. M.;Razo-Rodríguez, O. E. Del;
Tropical and subtropical agroecosystems , 2011,
Abstract: the objective of this study was to evaluate 20 protein feeds grouped in forages, vegetal by- products and animal by-products used for ruminant diets. protein fractions (pf): a, non-protein nitrogen (npn); b1, buffer-soluble protein; b2, buffer-insoluble, ndf-soluble protein; b3, ndf-insoluble, adf-soluble protein; and c, adf-insoluble protein, were determined for each ingredient. protein composition was correlated with total gas production in vitro (gp), gas production rate (s), lag time (l), dm disappearance (dmdiv) and residual protein (rpiv). the completely randomised designed was analysed using mixed proc. and tukey contrasts. forages contained 18.29, 7.86, 66.00, 2.96, 4.89% of fractions a, b1, b2, b3 and c, respectively. vegetable byproducts contained 22.55, 4.55, 59.51, 8.84, 4.55% of each fraction, in the same order. animal by-products contained 19.13, 4.52, 70.24, 3.74, 2.37% of each fraction, in the same order. vetch, wheat bran and poultry litter had the greatest vmax in each group. vmax was correlated (p≤0.01) with total protein (r = -0.45), adf (r = 0.27) and dmdiv (r = 0.61). in conclusion, there were differences in protein composition and kinetics of in vitro gas production among ingredients.
METODOLOGIA PARA LA VALORACION SANITARIA DE SISTEMAS DE ACUEDUCTO Y ALCANTARILLADOS
OSCAR EFRéN OSPINA Zú?IGA,HILDEBRANDO RAMíREZ ARCILA
DYNA , 2011,
Abstract: El sector de Agua Potable y Saneamiento Básico en Colombia no dispone de metodología que permita medir cualitativa y cuantitativamente la situación actual y futura de la infraestructura física existente y en uso de los sistemas de acueducto y alcantarillado, lo cual difi culta al Estado realizar controles, seguimientos y ejecuciones efi cientes y seguras, respecto a las acciones, priorizaciones, inversiones técnicas, fi nancieras y de gestión. La mayoría de las localidades cuentan con infraestructura física sanitaria, pero es evidente la menguada efi ciencia con que se mantiene, mejora, opera y/o rehabilita, traducido en bajas coberturas y en agua no apta para consumo humano y por ende en serios problemas de morbimortalidad. Surge entonces la necesidad de realizar una metodología para la evaluación de la infraestructura física sanitaria existente y en uso que evalúe y califi que la calidad, la cantidad, la cobertura, la continuidad, la vida útil y el comportamiento hidráulico y estructural de cada sistema. El desacierto de las inversiones se refl eja con el estado de abandono de muchos componentes de los sistemas que nunca entraron en funcionamiento u otros que no se requerían. El peor ejemplo lo refl eja la situación en la cual el 80% de las plantas de tratamiento de agua para consumo que existen en las 47 localidades urbanas del Departamento del Tolima (Colombia) en las cuales se aplicó la metodología, una vez construidas nunca entraron en operación, además, la mayoría de las inversiones en acueductos se centran en ampliar la capacidad de captación de agua, cuando en la mayoría de los casos no se requiere.
Efecto de la suplementación con grasa protegida sobre la producción y calidad de carne de toretes mexicanos doble propósito
Juan Reyes D,Omar Hernández M,Efrén Ramírez B,Isabel Guerrero L
Revista MVZ Córdoba , 2011,
Abstract: Objetivo. Evaluar la respuesta productiva y calidad de la carne de toretes doble propósito a la adición de grasa protegida (GP) en su dieta. Materiales y métodos. Se utilizaron 45 toretes comerciales (B. taurus x B. indicus), divididos en tres bloques de 15 animales, de acuerdo con su peso vivo en peque os, medianos y grandes. Cada bloque fue dividido en tres subgrupos de 5 animales, asignados aleatoriamente a los tratamientos 0, 1.5 y 3% de GP, en un dise o de bloques completamente al azar. Resultados. No hubo diferencias (p>0.05) en comportamiento productivo. La grasa dorsal fue mayor (p<0.05) en animales alimentados con 0% GP comparado con 3% de GP (9.6 vs 8.6 mm). No hubo diferencias (p>0.05) en área del ojo de la costilla (AC) ni pH de la carne. El contenido de proteína cruda de la carne incrementó (p<0.05) con 3% GP pero disminuyó (p<0.05) con 1.5 y 0% de GP (22.8 vs 21.6, 21.6, respectivamente). El perfil de ácidos grasos no fue diferente (p>0.05) entre tratamientos. Conclusiones. Adicionar GP a dietas para bovinos doble propósito en finalización no modificó la respuesta productiva, pero mejoró algunas características de la canal y de la carne. Se sugiere realizar más investigación, utilizando el mismo tipo de animales, con niveles mayores de GP a los usados en este estudio, ya que la respuesta pudiera mejorar.
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