The objective of the present study was to evaluate the immunoprotection given by two vaccination programs in broilers, using comercial vaccines against the infectious bursal disease virus (IBDV). In group A, the strain 2512 (intermediate plus) was inoculated at 19 days of age; in group B was used two intermediate-intermediate vaccines: the strain 2512 at day 10 and the strain 228TC at day 19; and group C was used as the nonvaccinated control group. The three groups were challenged at day 32 with the standard strain F52/70 of IBDV. The protection was measured after the challenge through clinical signs (diarrhea), size of the bursa, bursal index, productive parameters and antibody titers. The size and the bursal index at 7 days post challenge in the three groups showed bursal atrophy but this, did not significantly affect productive parameters. Groups A and B had similar body weights and a...

El objetivo del presente estudio fue evaluar la inmunoprotección conferida por dos programas de vacunación en pollos de carne, con diferentes vacunas comerciales del virus de la Enfermedad Infecciosa de la Bursa (EIB). El grupo A fue vacunado con la cepa 2512 (intermedia-fuerte) a los 19 días de edad; el grupo B fue vacunado a los 10 días con la cepa 2512 (intermedia-intermedia) y a los 19 días con la cepa 228TC (intermedia-intermedia); y el grupo C fue el control no vacunado. Los tres grupos fueron desafiados a los 32 días de edad con la cepa estándar F52/70 de la EIB. La protección fue medida a través de signos clínicos (diarrea), tamaño de la bursa, índice bursal, lesiones histopatológicas en bursa, parámetros productivos y títulos de anticuerpos. El tamaño e índice bursal al 7o día del desafío en los 3 grupos fueron compatibles con atrofia bursal, aunque no afectar...

En concentración de minerales por flotación es la separación Cu-Pb una etapa comúnmente aplicada a los concentrados llamados "Bulk Cu-Pb" de cuyo éxito depende la factibilidad de comercializar los productos, así como la utilidad adicional a ser obtenida. En este trabajo se presenta un procedimiento apropiado para la selección de los procesos a ser utilizados y para la optimación económica de tan importante fase de la concentración de sulfuros. Se incluyen los análisis mineralógicos previos necesarios para la definición del procedimiento incluyendo la determinación de la preparación requerida para el eficiente tratamiento subsecuente para lo cual se considera recomendable utilizar un separador magnético de alta intensidad en seco: Frantz lsodynamic. Luego se presenta un análisis de los procedimientos existentes y sus campos de aplicación y finalmente se realiza la optimi...

It is provided in this paper an alternative technique that complements the routine methods of classical saphenectomy in the dependent territories of superficial varicose veins. We call this change "FLEVOEXTRACCION SIDE WITH SIMULTANEOUS LIGATION". The goal achieved by this technique has been reducing immediate bleeding to venous avulsion of the hematoma and bruising after surgery tegumentaria. We believe that previous ties prevent possible complications of the conventional processes: organization of hematoma, venous thrombosis, embolism and infection. This procedure allows preserving the aesthetics of the limbs treated to reduce the number of surgical incisions. Presented for consideration a series of 24 case histories, equivalent to 29 lower limbs of patients with varicose veins, operated by the Department of General Surgical Hospital of Toquepala, dependence on Southern Peru Copper Cor...

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Using data from 1361 students we validate the Meta Evaluador Web where: a) the bank of Study and Self-Regulation Strategies used 50 items calibrated for confirmatory factor analysis. The results of their banks (Cognitive Strategies; Person and Self-Regulation Task and Materials) showed higher rates to 0.90 and RMSEA less than 0.07, with Cronbach alpha’s > 0.83. The fit between the theoretical and empirical models validated their constructs; b) the Personal Epistemology bank, used 12 item calibrated and its adjustment index confirms construct validity (0.90, RMSEA = 0.07) and c) Reading Comprehension bank used 18 calibrated items with convergent validity (CFI = 0.96; RMSEA = 0.03), all of them, with an acceptable homogeneity.

Using data from 1361 students we validate the Meta Evaluador Web where: a) the bank of Study and Self-Regulation Strategies used 50 items calibrated for confirmatory factor analysis. The results of their banks (Cognitive Strategies; Person and Self-Regulation Task and Materials) showed higher rates to 0.90 and RMSEA less than 0.07, with Cronbach alpha’s > 0.83. The fit between the theoretical and empirical models validated their constructs; b) the Personal Epistemology bank, used 12 item calibrated and its adjustment index confirms construct validity (0.90, RMSEA = 0.07) and c) Reading Comprehension bank used 18 calibrated items with convergent validity (CFI = 0.96; RMSEA = 0.03), all of them, with an acceptable homogeneity.

Objetivo: Determinar los factores familiares y biológicos relacionados con el trastorno por déficit de atención conhiperactividad (TDAH) en escolares del distrito de Trujillo. Material y métodos:Se realizó un estudio transversal,con una población de escolares entre 6 y 12 años. El muestreo se realizó por medio de la estimación de proporciones;el diseño fue combinado entre el estratificado, el conglomerado y el aleatorio simple, con una muestra de 390niños. Se aplicó un test diagnóstico a padres y maestros, además de investigarse los factores familiares y biológicos.Se utilizó la prueba no paramétrica Chi cuadrado con nivel de significancia de 0,05 para determinar la relaciónentre los factores y el trastorno. Resultados: La frecuencia del TDAH fue del 9,74%, con predominio en el sexomasculino (63,2%) y en el grupo etario entre 8 y 10 años (39,5%). El TDAH tipo mixto fue...

Precancerous cervical lesions precede the development of invasive cervical cancer by 10–20 years, making cervical cancer preventable if these lesions are detected and effectively treated. Treatment has evolved in the last few decades and now includes ablative options that can be performed in lower-resource settings where surgical excision is not feasible or routinely available. Gas-based cryotherapy, which freezes cervical tissue to induce localized necrosis, is the most commonly used ablative treatment. However, its implementation in low-resource settings is difficult because the refrigerant gas can be difficult to procure and transport, and is expensive. New cryotherapy devices that do not require an external supply of gas appear promising. Thermal coagulation, which burns cervical tissue to induce necrosis, has become more widely available in the last few years owing to its portabil...

The aim of this study was to determine the antibiotic susceptibility of subgingivalbacteria in dogs with moderate to severe periodontal disease. Thirty dogs from fourshelters were sampled using sterile paper sheet tips at the bottom of the periodontalpocket in the fourth premolar and canine teeth of the upper right quadrant. The most frequent bacteria isolated were Porphyromonas gingivalis (50%), Bifidobacterium spp(20%), Prevotella intermedia (16.7%), Staphylococcus spp (30%) and enterobacteria(60%). The highest antibiotic susceptibility from isolated bacteria species was againstimipenem. The susceptibility against other antibiotics depended of the bacterial species.

The aim of this study was to determine the seroprevalence of Toxoplasma gondii and its association with risk factors in Peruvian goats. A total of 1119 goat sera collected between 2017-2018 from 23 of the 24 departments of the country by the National Animal Health Service (SENASA) to monitor Brucella melitensis were evaluated. The number of samples was proportional to the goat population of each department. The variables age (<1, 1-3, >3 years), sex, origin (North Coast Zone, Central-South Coast Zone, Sierra-East Zone, altitude (0-500, >500-2500, >2500 m) and type of rearing (intensive, extensive) were considered. The sera were analysed with a commercial multi-species indirect ELISA kit and the risk factors were determined by logistic regression. The overall prevalence of T. gondii was 28.15% (95% CI: 25.5-30.9). The highest prevalences were found in the Sierra-East and Centr...

Se determinó la susceptibilidad antibiótica de bacterias subgingivales en caninos con enfermedad periodontal moderada a severa. Se trabajó con 30 canes provenientes de cuatro albergues de la ciudad de Lima. Las muestras se tomaron con puntas de papel estéril colocadas en el fondo de la bolsa periodontal del cuarto premolar y canino del cuadrante superior derecho. El agente bacteriano aislado con mayor frecuencia fue Porphyromonas gingivalis (50%). Además, se hallaron Bifidobacterium spp (20%), Prevotella intermedia (16.7%), Staphylococcus spp (30%) y enterobacterias (60%). La mayor susceptibilidad antibiótica de las especies halladas fue frente al imipenem (100%),habiendo una susceptibilidad variable para los demás antibióticos dependiendo del agente bacteriano.

The aim of this study was to determine the effect of five levels of tara gum on productive performance, bone mineralization, glucose and cholesterol levels, and intestinal morphometry in broilers from 1 to 21 days of age. A total of 200 male BB cobs of the Cobb500 line were used, distributed in five treatments with four repetitions and 10 animals per repetition: T1, basal diet without tara gum (control); T2, T3, T4 and T5, basal diet with tara gum (0.05, 0.10, 0.15 and 0.20% respectively). All diets contained 3072 kcal ME/kg and 20.5% crude protein. The feed meal and water were offered ad libitum. The data were analyzed under a completely randomized design using the ANOVA procedure and the Duncan test for comparison of means. The results showed that body weight and body-weight gain were better in T3 than in T4 and T5 (p<0.05), both in the second and in the third week of age. Also, tar...

The aim of this study was to determine the effect of five levels of tara gum on productive performance, bone mineralization, glucose and cholesterol levels, and intestinal morphometry in broilers from 1 to 21 days of age. A total of 200 male BB cobs of the Cobb500 line were used, distributed in five treatments with four repetitions and 10 animals per repetition: T1, basal diet without tara gum (control); T2, T3, T4 and T5, basal diet with tara gum (0.05, 0.10, 0.15 and 0.20% respectively). All diets contained 3072 kcal ME/kg and 20.5% crude protein. The feed meal and water were offered ad libitum. The data were analyzed under a completely randomized design using the ANOVA procedure and the Duncan test for comparison of means. The results showed that body weight and body-weight gain were better in T3 than in T4 and T5 (p<0.05), both in the second and in the third week of age. Also, tar...