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The purposes of this study were a) to evaluate the effect of random factors such as litter (L) and fixed effects such as season (S), calf sex (CS), and parity (P) on birth weight (BW) and weaning weight (WW); and b) to estimate the phenotypic correlation between BW and WW. The study was conducted in the Cieneguilla guinea pig farm of the Universidad Nacional Agraria La Molina. The data comprised 5460 and 3514 records for BW and WW respectively of improved guinea pigs. The data was collected from January 2009 to July 2010. Weaning was at 14 days of age. The feeding system was based on broccoli crop residues (Brassica oleracea italica) and concentrate. SAS MIXED procedure (v 9.1) was used to analyze the mixed models. Total born (TB) was used as covariate for BW and born alive (BA) and age of weaning (AW) were used as covariate for WW. BW was influenced (p<0.01) by TB, S, CS and P, and W...

The study was carried out at the Cieneguilla guinea pig farm of La Molina National Agrarian University, Lima. The objective of the study were to evaluate the association of fixed factors such as season (E), parity (NP), and covariates such as maternal weight at parity (PMP), total born (TN), number of live births (LB) and age at weaning (EDC) with total born (TN), number born alive (NV), number weaned (ND), litter weight at birth (PCN), and litter weight at weaning (PCD), and to estimate phenotypic correlations between the maternal traits. Data was collected from 1302 litters collected from January 2009 to July 2010. Analysis of variance and F tests were performed using the GLM procedure of SAS (v. 9.1). The statistical analysis for TN and NV adjusted for the covariate PMP differences were obtained for E and NP (p<0.01); for ND adjusted for the covariate PMP differences were obtained ...

The aim of this study was to evaluate the effect of a natural anticoccidial based on saponins from Yucca schidigera and Trigonella foenum-graecumen in the control of coccidiosis in broilers. It was used 75 1-day-old chicks from the Cobb 500 line, randomly distributed in three treatments: DBSA (base diet without addition of anticoccidial), DBAN (base diet with addition of natural anticoccidial), DBQI (base diet with addition of chemical anticoccidial - ionophore) with five repetitions and five chicks per experimental unit. The birds were inoculated on day 14 with 15 times the recommended dose of the live vaccine (Coccivac-D) which contains Eimeria acervulina, E. maxima, E. mivati, E. tenella, E. necatrix, E. brunetti, E. hagani and E. praecox to induce the disease. The variables oocyst count per gram of faeces (ROpgh), intestinal lesions and various productive parameters were evaluated. T...

Los objetivos del estudio fueron a) evaluar el efecto de factores al azar, como efecto de camada (C) y efectos fijos, como estación (E), sexo de la cría (SC), y número de parto de la madre (NP) sobre el peso al nacimiento (PNC) y peso al destete de las crías (PDC), y b) estimar la correlación fenotípica entre PNC y PDC. El estudio se desarrolló en la Granja de Cuyes de Cieneguilla de la Universidad Nacional Agraria La Molina. Se analizaron 5460 datos de PNC y 3514 datos de PDC recolectados de cuyes mejorados entre enero de 2009 a julio de 2010. El destete se realizó a los 14 días de edad en promedio. La alimentación fue en base a residuos de cosecha de brócoli (Brassica oleracea italica) y alimentos balanceados elaborados en la granja. Se utilizó el procedimiento MIXED de SAS (v 9.1) para el análisis de modelos mixtos. El total de nacidos (TN) se utilizó como covariable par...

The study was carried out at the Cieneguilla guinea pig farm of La Molina National Agrarian University, Lima. The objective of the study were to evaluate the association of fixed factors such as season (E), parity (NP), and covariates such as maternal weight at parity (PMP), total born (TN), number of live births (LB) and age at weaning (EDC) with total born (TN), number born alive (NV), number weaned (ND), litter weight at birth (PCN), and litter weight at weaning (PCD), and to estimate phenotypic correlations between the maternal traits. Data was collected from 1302 litters collected from January 2009 to July 2010. Analysis of variance and F tests were performed using the GLM procedure of SAS (v. 9.1). The statistical analysis for TN and NV adjusted for the covariate PMP differences were obtained for E and NP (p<0.01); for ND adjusted for the covariate PMP differences were obtained ...

The aim of this study was to evaluate the effect of a natural anticoccidial based on saponins from Yucca schidigera and Trigonella foenum-graecumen in the control of coccidiosis in broilers. It was used 75 1-day-old chicks from the Cobb 500 line, randomly distributed in three treatments: DBSA (base diet without addition of anticoccidial), DBAN (base diet with addition of natural anticoccidial), DBQI (base diet with addition of chemical anticoccidial - ionophore) with five repetitions and five chicks per experimental unit. The birds were inoculated on day 14 with 15 times the recommended dose of the live vaccine (Coccivac-D) which contains Eimeria acervulina, E. maxima, E. mivati, E. tenella, E. necatrix, E. brunetti, E. hagani and E. praecox to induce the disease. The variables oocyst count per gram of faeces (ROpgh), intestinal lesions and various productive parameters were evaluated. T...

Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Ciencia Animal

We determine the effect of modified culture medium using different growth regulators concentrations (auxins / cytokinins) for regeneration and propagation of in vitro garlic plants (Allium sativumL.) var. ‘Morado Barrran-quino’. In the introduction stage meristem tips were cultured in test tubes up to regeneration. It was determined that medium MSM + IBA 0.6 mg/L was most suitable for the meristem tip differentiation and development. 13 weeks old microplants obtained on introduction stage were used for multiplication, obtaining the formation of a cluster after each subcultive. The best multiplication ratio was obtained in MMA medium + IAA 2.5 mg/L + KIN 5.0 mg/L and MSM medium + 2iP 1.5 mg/L with 4.71 and 4.79 respectively.

En este trabajo determinamos el efecto de medios de cultivo modificados usando diferentes concentraciones de reguladores de crecimiento (auxinas/citoquininas) para la regeneración y multiplicación in vitro del ajo (Allium sativum L.) variedad Morado Barranquino. En la fase de introducción se cultivó meristemos apicales en tubos de prueba hasta su regeneración y se determinó que el medio MSM + AIB 0,6 mg/L es el más adecuado para la diferenciación y desarrollo del meristemo. Para la multiplicación se utilizaron las microplantas (13 semanas) de la fase de introducción, obteniéndose formación de macollos en cada subcultivo; se logró mejor tasa de multiplicación en el medio MMA + AIA 2,5 mg/L + KIN 5 mg/L y el medio MSM + 2ip 1,5 mg/L con 4,71 y 4.79 respectivamente.

En este trabajo determinamos el efecto de medios de cultivo modificados usando diferentes concentraciones de reguladores de crecimiento (auxinas/citoquininas) para la regeneración y multiplicación in vitro del ajo (Allium sativum L.) variedad Morado Barranquino. En la fase de introducción se cultivó meristemos apicales en tubos de prueba hasta su regeneración y se determinó que el medio MSM + AIB 0,6 mg/L es el más adecuado para la diferenciación y desarrollo del meristemo. Para la multiplicación se utilizaron las microplantas (13 semanas) de la fase de introducción, obteniéndose formación de macollos en cada subcultivo; se logró mejor tasa de multiplicación en el medio MMA + AIA 2,5 mg/L + KIN 5 mg/L y el medio MSM + 2ip 1,5 mg/L con 4,71 y 4.79 respectivamente.

This research was funded by FONDECYT-CONCYTEC , grant number 063-2018-FONDECYT-BM .

Growing number of young men from different regions of Peru, postulate their income annually to various units of the police institution. The routine medical examination to undergo these candidates in the Department of Cardiology, Hospital Police Lima, offers opportunity to do research on some aspects of national pathology. 3 years screening for Chagas disease is performed in subjects born or derived from chagasic regions, having had occasion to use our "index of suspicion" for the diagnosis of this disease in subjects come Tacna, Moquegua, Arequipa, Madre de Dios, Amazonas and San Martin (1).

Una primera etapa del estudio fue destinada al conocimiento de la situación actual del abastecimiento de agua potable en los balnearios del sector comprendido entre los valles de Lurín y Chilca, y de los medios de distribución existentes.

El presente informe es una actualización del Reporte emitido en diciembre del 2020 y se analizan las condiciones climáticas de las lluvias a nivel nacional para el periodo setiembre 2020 - marzo 2021, así como, las perspectivas de lluvias para el otoño 2021 (trimestre abril - junio).

From June 1960 to June 1961, using our "index of suspicion" 1 in the Department of Cardiology, Hospital Police Lima, we diagnosed 5 cases over Chagas disease originating in tacan, the first of Sagollo two (Locumba) and the last three of Tala (Tarata).

The aim of this study was to determine the seroprevalence of T. gondii in Gallus domesticus in Havana, Cuba. Three hundred serum samples were collected from White Leghorn pullets L33 in growing stage in 2015. Samples represented 100 birds per batch incorporated into the poultry unit from different origins. Samples were evaluated by an ELISA inhibition test and data was analyzed by the Chi-square and Duncan tests to compare proportions of positive birds among batches. A relatively low seroprevalence of T. gondii was found (9.6%), similar to other findings reported internationally. Significant differences (p=0.0001) in the prevalence of T. gondii among the three bird batches were found. It is concluded that the seroprevalence of T. gondii in Gallus domesticus in Havana is low, though this constitutes a risk of infection for susceptible human and animal populations.

El estudio tuvo como objetivo determinar la seroprevalencia de T. gondii en Gallus domesticus en La Habana, Cuba. Se colectaron 300 muestras de sueros de pollitas White Leghorn L33 en fase de desarrollo en 2015, distribuidas a razón de 100 aves por cada lote incorporado a la unidad avícola desde procedencias diferentes. Las muestras fueron analizadas mediante un ELISA de inhibición y se utilizaron las pruebas Chi-cuadrado y Dócima de Duncan para comparar las proporciones de aves positivas entre los lotes estudiados. Se encontró una relativa baja seroprevalencia de T. gondii (9.6%), similar a otros hallazgos reportados a nivel internacional. Se evidenciaron diferencias significativas (p=0.0001) en la prevalencia de T. gondii entre los tres lotes de aves. Se concluye que la seroprevalencia de T. gondii en Gallus domesticus en La Habana es baja, aunque esta constituye un riesgo de infe...