Advanced Search
Now showing items 1-10 of 73
Evaluación plan de negocio que permita el crecimiento de la explotación de una nueva raza de gallinas destinada a la postura de huevo en crianza libre de jaula
(Universidad de Chile, 2022)
En el presente trabajo se elaborará un plan de negocio que permita el crecimiento de la
explotación de una nueva raza de gallinas destinada a la postura de huevo en crianza
libre de jaula, la cual se caracteriza por generar huevos verdes/azul, con...
Efecto de los tratamientos con florfenicol, tilosina enrofloxacino y oxitetraciclina en gallinas ponedoras sobre los perfiles de sensibilidad de cepas Escherichia coli aisladas de la microbiota intestinal
(Universidad de Chile, 2014)
poblaciones bacterianas y actúan como reservorios de genes de resistencia. El objetivo de este trabajo fue evaluar el efecto de los tratamientos con enrofloxacino, oxitetraciclina, florfenicol y tilosina en gallinas ponedoras sobre los perfiles de sensibilidad...
Evaluación serológica del plan de vacunación contra bronquitis infecciosa en gallinas ponedoras de diferentes edades de un plantel comercial
(Universidad de Chile, 2016)
Se realizó la prueba de ELISA para evaluar la respuesta serológica de gallinas ponedoras comerciales según el plan de vacunación contra la Bronquitis Infecciosa (BI) aplicado en un plantel comercial, consistente en 8 vacunas vivas aplicadas al día...
ELISA test was performed to evaluate serological response of commercial laying hens according to a vaccination plan against Infectious Bronchitis (IB) applied in a commercial farm. Five hundred laying hens were sampled from 25 flocks of different ages and number of vaccines given (20 sera from each flock). Flocks were located in different sectors of the farm. Flocks of hens with 6, 7 and 8 vaccines given, showed antibody titers against IB with a Geometric Mean (GM) from 1137 to 6612. The statistical analysis according to the number of applied vaccines, showed that there was a significant increase in antibody titers after 6 vaccines with an Arithmetic Mean (AM) of 2341; and again there was a significant increase of the AM to 4711 with 7 vaccines. However, with 8 vaccines, the AM of 4434 was statistically similar to the previous group. Statistical analysis of the hen sectors with 7 vaccines showed antibody titers against IB with an AM of 2887 to 6193, which statistically can be differentiated into two main groups. Sectors of hens with 8 vaccines, exhibited antibody titres with an AM in a range of 3799 to 5622, which also differ in two statistical different groups. It was concluded that antibody titers obtained from different flocks of hens are consistent with literature and technical guidelines for ELISA test. In addition, the diversity of antibody titers obtained among flocks or sectors of birds, with or without number of similar vaccines, may be influenced by temporary differences in the application of vaccines, structural differences of the facilities and building sectors, differences associated to vaccines, differences of management and vaccination staff, among others....
ELISA test was performed to evaluate serological response of commercial laying hens according to a vaccination plan against Infectious Bronchitis (IB) applied in a commercial farm. Five hundred laying hens were sampled from 25 flocks of different ages and number of vaccines given (20 sera from each flock). Flocks were located in different sectors of the farm. Flocks of hens with 6, 7 and 8 vaccines given, showed antibody titers against IB with a Geometric Mean (GM) from 1137 to 6612. The statistical analysis according to the number of applied vaccines, showed that there was a significant increase in antibody titers after 6 vaccines with an Arithmetic Mean (AM) of 2341; and again there was a significant increase of the AM to 4711 with 7 vaccines. However, with 8 vaccines, the AM of 4434 was statistically similar to the previous group. Statistical analysis of the hen sectors with 7 vaccines showed antibody titers against IB with an AM of 2887 to 6193, which statistically can be differentiated into two main groups. Sectors of hens with 8 vaccines, exhibited antibody titres with an AM in a range of 3799 to 5622, which also differ in two statistical different groups. It was concluded that antibody titers obtained from different flocks of hens are consistent with literature and technical guidelines for ELISA test. In addition, the diversity of antibody titers obtained among flocks or sectors of birds, with or without number of similar vaccines, may be influenced by temporary differences in the application of vaccines, structural differences of the facilities and building sectors, differences associated to vaccines, differences of management and vaccination staff, among others....
Efecto del almacenamiento y edad de la ponedora sobre la calidad del huevo de codorniz (Coturnix conturnix japonica)
(Universidad de Chile, 2004)
Se realizó un estudio en huevos de codorniz japonesa (Coturnix coturnix japonica) de ponedoras de 17 y 51 semanas de edad, con el objeto de establecer si la edad de la ponedora y el efecto de almacenamiento influeyen en la calidad del huevo. Los...
Efecto de tilosina sobre la sensibilidad de cepas de Escherichia coli aisladas de la microbiota intestinal de gallinas de postura
(Universidad de Chile, 2012)
. Estos resultados podrían servir para instaurar programas de vigilancia de resistencia bacteriana y fomentar el uso prudente de estos fármacos en planteles de gallinas ponedoras, considerando fundamentalmente los niveles basales de sensibilidad bacteriana...
Determinación de la Seroprevalencia de Mycoplasma gallisepticum y Mycoplasma synoviae en una empresa de aves de postura de múltiples edades
(Universidad de Chile, 2014)
RESUMEN
Se recolectaron 453 muestras de suero de gallinas ponedoras pertenecientes a una
empresa productora de huevos ubicada en la Región de Valparaíso, y se determinó la
seroprevalencia de Mycoplasma gallisepticum (MG) y Mycoplasma synoviae (MS) a...
industria de producción de carne de pollo y de pavo han sido tremendamente efectivas y permiten criar este tipo de aves en lotes libres de estas infecciones. Muy distinta es la situación en la industria de gallinas ponedoras de huevos de consumo, donde...
industria de producción de carne de pollo y de pavo han sido tremendamente efectivas y permiten criar este tipo de aves en lotes libres de estas infecciones. Muy distinta es la situación en la industria de gallinas ponedoras de huevos de consumo, donde...
Efecto del enrofloxacino sobre la composición y sensibilidad de la microbiota intestinal en gallinas de postura
(Universidad de Chile, 2012)
cuantitativos en las poblaciones de E. coli,
Enterococcus spp. y Lactobacillus spp. aisladas de la microbiota intestinal de
gallinas ponedoras tratadas con enrofloxacino en dosis terapéuticas …………………
1. Recuento de colonias de E. coli……………………………………………...
2...
desde la microbiota intestinal de aves de postura sometidas a tratamiento con enrofloxacino………………………….... Objetivo 3: Establecer los perfiles de resistencia en E. coli y Enterococcus aislados desde la microbiota intestinal de gallinas ponedoras...
desde la microbiota intestinal de aves de postura sometidas a tratamiento con enrofloxacino………………………….... Objetivo 3: Establecer los perfiles de resistencia en E. coli y Enterococcus aislados desde la microbiota intestinal de gallinas ponedoras...
Efecto de florfenicol sobre la sensibilidad de Escherichia coli proveniente de la microbiota intestinal de gallinas de postura
(Universidad de Chile, 2012)
INTESTINAL DE GALLINAS DE
POSTURA
OSCAR NICOLÁS CHACÓN MIÑO
Memoria para optar al Título
Profesional de Médico Veterinario
Departamento de Ciencias Clínicas
PROFESOR GUÍA: Dra. Betty San Martín Núñez
SANTIAGO, CHILE
JUNIO, 2012
2...
UNIVERSIDAD DE CHILE FACULTAD DE CIENCIAS VETERINARIAS Y PECUARIAS ESCUELA DE CIENCIAS VETERINARIAS EFECTO DE FLORFENICOL SOBRE LA SENSIBILIDAD DE Escherichia coli PROVENIENTE DE LA MICROBIOTA INTESTINAL DE GALLINAS DE POSTURA OSCAR NICOLÁS...
UNIVERSIDAD DE CHILE FACULTAD DE CIENCIAS VETERINARIAS Y PECUARIAS ESCUELA DE CIENCIAS VETERINARIAS EFECTO DE FLORFENICOL SOBRE LA SENSIBILIDAD DE Escherichia coli PROVENIENTE DE LA MICROBIOTA INTESTINAL DE GALLINAS DE POSTURA OSCAR NICOLÁS...
Caracterización de la calidad de cáscara de huevo blanco en planteles avícolas comerciales en Chile y su relación con determinados factores de producción
(Universidad de Chile, 2016)
como fuente de calcio en la dieta de las ponedoras en los distintos planteles, en cuanto a su granulometría y contenido de calcio. Como resultado se obtuvo que el peso del huevo aumentó según la edad de las aves, mientras que la resistencia de sus...
The aim of this study was to characterize the quality of the white shell egg in commercial poultry establishments in Chile and its relationship to certain factors of production, for which a sampling among the top 10 egg producers in the country was performed. Each participating company was requested to provide samples of eggs from hens of different ages, which were evaluated for weight and strength and thickness of the eggshell. In addition, the oyster shell used as a source of calcium in the diet of laying hens in various enterprises, in terms of particle size and calcium content was evaluated. The resulting data showed that egg weight increased along with the age of the birds, while the strength of their shells fell steadily. The eggshell thickness remained stable with increasing age across different companies. The relationship between the average of all participating establishments for different variables by linear regression and correlation coefficients were evaluated. It was further determined that the components with greater influence on the eggshell strength are its thickness, as well as the age of the hens together. As for the oyster shell particle size, was found that none of the participating egg producers meet the requirements proposed by the manuals of genetic lines used. However, it was possible to conclude that the calcium content of the oyster shell is relatively stable between samples given by the different companies....
The aim of this study was to characterize the quality of the white shell egg in commercial poultry establishments in Chile and its relationship to certain factors of production, for which a sampling among the top 10 egg producers in the country was performed. Each participating company was requested to provide samples of eggs from hens of different ages, which were evaluated for weight and strength and thickness of the eggshell. In addition, the oyster shell used as a source of calcium in the diet of laying hens in various enterprises, in terms of particle size and calcium content was evaluated. The resulting data showed that egg weight increased along with the age of the birds, while the strength of their shells fell steadily. The eggshell thickness remained stable with increasing age across different companies. The relationship between the average of all participating establishments for different variables by linear regression and correlation coefficients were evaluated. It was further determined that the components with greater influence on the eggshell strength are its thickness, as well as the age of the hens together. As for the oyster shell particle size, was found that none of the participating egg producers meet the requirements proposed by the manuals of genetic lines used. However, it was possible to conclude that the calcium content of the oyster shell is relatively stable between samples given by the different companies....
Estudio de depleción de oxitetraciclina en huevos obtenidos de gallinas de postura experimentales
(Universidad de Chile, 2012)
los Alimentos ha fijado en 200 μg/kg el LMR para oxitetraciclina en huevos, pero no se ha definido el período de resguardo de este medicamento en gallinas de postura. El objetivo de este trabajo fue evaluar el período de resguardo de una formulación de...