Francisco Javier Monge Navarro - Academia.edu (original) (raw)

Papers by Francisco Javier Monge Navarro

Revista Mexicana de Ciencias Pecuarias, 2013

Este es el primer reporte sobre aislamiento y tipificacion molecular de Mycobacterium avium subes... more Este es el primer reporte sobre aislamiento y tipificacion molecular de Mycobacterium avium subespecie paratuberculosis (Map) en ganado bovino y ovino en Mexicali-Baja California; region con antecedentes serologicos de paratuberculosis en pequenos rumiantes. Se analizaron cinco muestras de ovinos y uno de bovino provenientes de animales que presentaban signos compatibles con paratuberculosis. Los resultados de serologia mostraron reaccion positiva al ELISA con una razon S/P (densidad optica (DO) del suero problema sobre la DO del suero testigo positivo), superior al 70 % en tres de las muestras de ovinos y la de bovino. Mediante el cultivo bacteriologico se obtuvieron tres aislamientos, dos de origen ovino y uno de origen bovino, los cuales fueron identificados como Map segun la PCR IS900 y f57 y tipificados como Tipo C de Map, mediante el ensayo de PCR IS1311 y analisis de endonucleasas de restriccion (IS1311 PCR-REA). Los datos obtenidos en este estudio confirman la presencia de M...

Iranian Journal of Applied Animal Science, Jun 1, 2021

Proceedings of the National Academy of Sciences, 2011

Rift Valley fever (RVF) is a zoonotic disease endemic in Africa and the Arabian Peninsula caused ... more Rift Valley fever (RVF) is a zoonotic disease endemic in Africa and the Arabian Peninsula caused by the highly infectious Rift Valley fever virus (RVFV) that can be lethal to humans and animals and results in major losses in the livestock industry. RVF is exotic to the United States; however, mosquito species native to this region can serve as biological vectors for the virus. Thus, accidental or malicious introduction of this virus could result in RVFV becoming endemic in North America. Such an event would likely lead to significant morbidity and mortality in humans, and devastating economic effects on the livestock industry. Currently, there are no licensed vaccines for RVF that are both safe and efficacious. To address this issue, we developed two recombinant RVFV vaccines using vaccinia virus (VACV) as a vector for use in livestock. The first vaccine, vCOGnGc, was attenuated by the deletion of a VACV gene encoding an IFN-γ binding protein, insertional inactivation of the thymidi...

Small Ruminant Research, 2021

Proceedings XXXII Reunión Internacional de Producción de Carne y Leche en Climas Cálidos

Resumen. Se utilizaron 24 ovinos de la cruza de razas Pelibuey × Katahdin, bajo un diseño de bloq... more Resumen. Se utilizaron 24 ovinos de la cruza de razas Pelibuey × Katahdin, bajo un diseño de bloques completos al azar para evaluar el impacto del filtrado del agua de bebida sobre el rendimiento productivo. Los tratamientos consistieron en el suministro ad libitum de agua de dique filtrada (FILT; 256 ppm TDS) y agua de dique no filtrada (RAW; 776 ppm TDS). El experimento duró 89 días. En base al contenido de TDS, tanto FILT como RAW se califican como agua segura para bebida de ganado. Sin embargo, el consumo de agua fue 10% mayor en corderos que recibieron FILT. Así mismo, FILT mejoró la ganancia diaria de peso (8%, P = 0.03) y la eficiencia en la utilización de la energía de la dieta (2.9% P = 0.04). Los resultados de este estudio indican que el filtrado del agua calificada como "segura", mejora el comportamiento productivo de ovinos en finalización. Palabras clave: Corderos, finalización, calidad de agua, rendimiento productivo.

Journal of Tropical Medicine, 2021

The Mexican territory of the Yucatan Peninsula has a tropical climate and harbors a wide variety ... more The Mexican territory of the Yucatan Peninsula has a tropical climate and harbors a wide variety of domestic, synanthropic, and wild animals, as well as disease vectors. To determine the distribution of recorded zoonotic diseases in the Yucatan Peninsula, scientific publications referring to these diseases in animals and containing geographic coordinates of disease occurrence, were studied. The epidemiological bulletins of the national government were also consulted to obtain information on zoonotic diseases reported in humans in the territory. The territory harbors a wide variety of tropical zoonotic pathogens, including Trypanosoma cruzi, Leptospira interrogans, Toxoplasma gondii, Leishmania mexicana, Dirofilaria immitis, and Rickettsia felis. A variety of domestic, synanthropic, and wild animals act as hosts or reservoirs in the transmission cycle of the zoonotic diseases in the Yucatan Peninsula, and some spillover into human populations has also been recorded. There are still z...

Revista Mexicana de Ciencias Pecuarias, 2020

La comunidad de Ojos Negros está ubicada en el municipio de Ensenada Baja California, México. Des... more La comunidad de Ojos Negros está ubicada en el municipio de Ensenada Baja California, México. Desde 1930, los residentes locales fabrican un queso artesanal muy apreciado en la región; sin embargo, la leche cruda y el queso nunca han sido analizados por la calidad microbiológica y de higiene del producto final. El objetivo del presente estudio fue evaluar la calidad microbiológica, física y química de la leche cruda utilizada para producir queso y el queso artesanal producido en las 22 unidades de producción individuales. Se tomaron muestras de queso y leche de las unidades de producción para realizar pruebas microbiológicas. Se realizaron determinaciones físicas y químicas de proteínas, grasas y lactosa utilizando un analizador LACTOSCAN-S. Los resultados del análisis de la leche mostraron un contenido de proteína (33,11 g/l) y grasa (39,89 g/l) dentro de los parámetros de la normatividad. Para la calidad microbiológica de la leche, los resultados del recuento de mesófilos aeróbico...

Journal of Medicine and Biomedical Research, 2009

Revista de Investigaciones Veterinarias del Perú, 2020

El objetivo de este estudio fue detectar la presencia de circovirus porcino tipo 2 (PCV2) en hato... more El objetivo de este estudio fue detectar la presencia de circovirus porcino tipo 2 (PCV2) en hatos porcinos de Baja California, México, empleando la técnica de reacción en cadena de la polimerasa (PCR). Se colectaron 97 muestras de sangre de cerdos procedentes de 26 granjas. El ADN se extrajo a partir de la capa leucoplaquetaria y las muestras fueron agrupadas en 19 grupos de cinco muestras y uno de dos muestras para el análisis de PCR. Se utilizaron cebadores específicos para amplificar un fragmento de 264 pares de bases del ORF2 de PCV2 utilizando como control positivo una vacuna comercial. El fragmento viral se detectó en el 15% (3/20) de los grupos analizados. Este es el primer reporte en el que se evidencia la presencia de circovirus porcino tipo 2 en Baja California.

The objective of this study was to assess the presence of genotype 2 porcine reproductive and res... more The objective of this study was to assess the presence of genotype 2 porcine reproductive and respiratory syndrome virus (PRRSV-2) in Baja California (Baja), as well as the standardization of the qRT-PCR technique. A cross-sectional study was conducted from 2016 to 2017 in farms from Baja. It was obtained 97 blood samples from clinically healthy, notvaccinated boars and sows. Primers were designed and standardize, in order to perform qRTPCR tests from the buffy coat. Every positive results were confirmed by sequence studies. It Rev Mex Cienc Pecu 2021;12(4):1317-1325 1318 was found that 9.3 % of the samples were positive. The positive samples came from 66.6 % of the sampled regions. This study demonstrates the presence of PRRSV-2 in Baja, therefore, it is necessary to conduct epidemiological studies in order to identify the magnitude of the problem and to establish preventive and control measures.

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2016

Twenty-one Holstein bull calves (368 ± 5.2 kg) were used in order to evaluate the effects of comb... more Twenty-one Holstein bull calves (368 ± 5.2 kg) were used in order to evaluate the effects of combining recombinant bovine growth hormone (bST) and anabolic implants on growth performance and dietary energetics. Steers were assigned (7 repetitions/ treatment) to individual pens (16 m2) equipped with automatic waterers and 1.2 m fence-line feed bunks. The experiment lasted 56 days. Treatments were: 1) no bST, no implant; 2) implant; and 3) bST + implant. Compared to implanted cattle, the combination of exogenous bovine somatotropin and anabolic implants did not enhance growth performance or observed dietary energy. Compared to nonimplanted cattle, anabolic implants increased dry matter intake (DMI, 8.3%), average daily gain (ADG, 18.5%), gain efficiency (ADG:DMI; 7.9%), dietary net energy (6%), and apparent energy retention per unit of DMI (7%). Implantation reduced the estimated maintenance coefficients of intact Holstein calves by around 17%. The combinations of exogenous bovine somatotropin and anabolic implants did not enhance the growth performance or dietary energy of intact Holstein cattle fed a high-energy finishing diet.

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2015

Rabies is a fatal infection of the central nervous system produced by a Lyssavirus of the family ... more Rabies is a fatal infection of the central nervous system produced by a Lyssavirus of the family Rhabdoviridae. The virus is distributed worldwide and is primarily transmitted by rabid animal bites, with multiple reservoirs depending on the region. The vampire bat Desmodus rotundus is distributed in several states of Mexico and is considered the main vector of rabies in cattle. In the state of Baja California, no cases of paralytic rabies have been reported. In this work, we report the first three cases of rabies in feedlot cattle showing nervous signs, which were later confirmed in a reference laboratory by immunofluorescent analysis. Considering that the majority of feedlot cattle are introduced to Baja California from other states of Mexico where rabies is considered endemic, it is necessary to strengthen current programs of vaccination to reduce the rate of infected animals in their places of origin to avoid the spread of rabies to other geographic areas of the country.

Molecules and Cells, 2010

Arabidopsis thaliana WRKY39, a transcription factor that is induced by heat stress, is a member o... more Arabidopsis thaliana WRKY39, a transcription factor that is induced by heat stress, is a member of the group II WRKY proteins and responds to both abiotic and biotic stress. Heat-treated seeds and plants of WRKY39 knock-down mutants had increased susceptibility to heat stress, showing reduced germination, decreased survival, and elevated electrolyte leakage compared with wild-type plants. In contrast, WRKY39 over-expressing

Revista Mexicana de Ciencias Pecuarias

El complejo respiratorio bovino (CRB) es la principal causa de enfermedad y muerte en el ganado d... more El complejo respiratorio bovino (CRB) es la principal causa de enfermedad y muerte en el ganado de engorda en todo el mundo. Es un síndrome infeccioso multifactorial provocado por distintos virus y bacterias que disminuyen la eficiencia productiva y ocasionan pérdidas económicas. En México, el CRB se ha reportado en todas las regiones donde se engorda ganado; sin embargo, esos reportes carecen de información sobre la presencia del coronavirus respiratorio bovino (CVB), haciendo necesario contar con herramientas de diagnóstico confiables y precisas para detectar la presencia de CVB en el ganado que se engorda en México, para proponer las medidas sanitarias apropiadas para su manejo clínico. En este trabajo, se desarrolló una plataforma de diagnóstico molecular de PCR en tiempo real (rt-PCR) que amplifica un fragmento de la proteína S del CVB en muestras de exudado nasal. Al aplicar la plataforma rt-PCR para CVB en bovinos de engorda en aparente estado de salud y con signos de enferme...

Pathogens

Stray dogs are one of the main reservoirs of intestinal parasitic infections and some have zoonot... more Stray dogs are one of the main reservoirs of intestinal parasitic infections and some have zoonotic potential. An epidemiological survey was carried out between September 2017 and May 2018 in Mexicali Valley, this area sacrifices around 92,470 head of cattle monthly, which represents 27% of the national slaughter and has 71,307 hectares for crops. In this period the Municipal Animal Control Center during their routine visits to the Mexicali Valley captured 103 dogs. All the dogs were evaluated using copromicroscopic techniques to detect intestinal parasites. The general frequency of parasitic infections was 28.15% (29/103), the most frequent parasite being Dipylidium caninum 16.50% (17/103), followed by Taenia spp. 6.79% (7/103), Taenia hydatigena 2.91% (3/103), Taenia serialis 0.97% (1/103), Taenia pisiformis (0.97%), Toxocara canis 3.88% (4/103), Toxascaris leonina 1.94% (2/103), and Cystoisospora spp. 1.94% (2/103). No significant statistical associations were found between paras...

Journal of Apicultural Research

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2017

Bovine respiratory disease (BRD) is the main reason for economic loss in feedlots. A cross-sectio... more Bovine respiratory disease (BRD) is the main reason for economic loss in feedlots. A cross-sectional study was conducted in order to detect the pathogens involved in BRD. A total of 88 animals with respiratory signs were sampled for diagnosis using PCR. The detected pathogens were bovine respiratory syncytial virus (80.6%), Mannheimia haemolytica (79.5%), Pasteurella multocida (68.1%), parainfluenza 3 virus (23.8%), bovine herpes virus-1 (20.4%), and bovine viral diarrhea virus (11.3%). The average number of treatments applied per animal was 1.3 with an estimated treatment cost of 16 USD per treatment/animal. Animals receiving more than one treatment averaged costs exceeding 38 USD per animal. In total, 77% of all animals received the first treatment during the first 3 weeks after arrival. We found a relationship between shrink percentage and the distance traveled by the livestock from its origin to the feedlot (P = 0.049). BRD represents a costly condition for feedlot operations. It is imperative that cattleman and veterinary practitioners recognize the necessity to apply additional preventive medicine strategies to reduce the impact of BRD. Preconditioning and a more systematic use of methaphylaxis may improve our ability to accurately identify the most effective strategies to reduce the impact of BRD.

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2015

Twenty four male lambs (24.93±0.93 kg) were used in order to evaluate the effects of chromium met... more Twenty four male lambs (24.93±0.93 kg) were used in order to evaluate the effects of chromium methionine (Cr) supplementation in high-energy finishing diets on the carcass characteristics and chemical composition of longissimus muscle (LM).

Online Journal of Public Health Informatics, 2013

Objective To showcase One Border One Health, a binational, multidisciplinary initiative in the Ca... more Objective To showcase One Border One Health, a binational, multidisciplinary initiative in the California/Baja California (CA/BC) border region whose aim is to reconfigure traditional species-specific approaches to surveillance for emerging and re-emerging pathogens.

Background Foot-and-mouth disease (FMD) is one of the most economically devastating vesicular dis... more Background Foot-and-mouth disease (FMD) is one of the most economically devastating vesicular diseases of livestock. Rapid detection of FMD virus (FMDV) infection is essential for prompt identification and prevention of the spread of an outbreak. We are currently ...

Revista Mexicana de Ciencias Pecuarias, 2013

Este es el primer reporte sobre aislamiento y tipificacion molecular de Mycobacterium avium subes... more Este es el primer reporte sobre aislamiento y tipificacion molecular de Mycobacterium avium subespecie paratuberculosis (Map) en ganado bovino y ovino en Mexicali-Baja California; region con antecedentes serologicos de paratuberculosis en pequenos rumiantes. Se analizaron cinco muestras de ovinos y uno de bovino provenientes de animales que presentaban signos compatibles con paratuberculosis. Los resultados de serologia mostraron reaccion positiva al ELISA con una razon S/P (densidad optica (DO) del suero problema sobre la DO del suero testigo positivo), superior al 70 % en tres de las muestras de ovinos y la de bovino. Mediante el cultivo bacteriologico se obtuvieron tres aislamientos, dos de origen ovino y uno de origen bovino, los cuales fueron identificados como Map segun la PCR IS900 y f57 y tipificados como Tipo C de Map, mediante el ensayo de PCR IS1311 y analisis de endonucleasas de restriccion (IS1311 PCR-REA). Los datos obtenidos en este estudio confirman la presencia de M...

Iranian Journal of Applied Animal Science, Jun 1, 2021

Proceedings of the National Academy of Sciences, 2011

Rift Valley fever (RVF) is a zoonotic disease endemic in Africa and the Arabian Peninsula caused ... more Rift Valley fever (RVF) is a zoonotic disease endemic in Africa and the Arabian Peninsula caused by the highly infectious Rift Valley fever virus (RVFV) that can be lethal to humans and animals and results in major losses in the livestock industry. RVF is exotic to the United States; however, mosquito species native to this region can serve as biological vectors for the virus. Thus, accidental or malicious introduction of this virus could result in RVFV becoming endemic in North America. Such an event would likely lead to significant morbidity and mortality in humans, and devastating economic effects on the livestock industry. Currently, there are no licensed vaccines for RVF that are both safe and efficacious. To address this issue, we developed two recombinant RVFV vaccines using vaccinia virus (VACV) as a vector for use in livestock. The first vaccine, vCOGnGc, was attenuated by the deletion of a VACV gene encoding an IFN-γ binding protein, insertional inactivation of the thymidi...

Small Ruminant Research, 2021

Proceedings XXXII Reunión Internacional de Producción de Carne y Leche en Climas Cálidos

Resumen. Se utilizaron 24 ovinos de la cruza de razas Pelibuey × Katahdin, bajo un diseño de bloq... more Resumen. Se utilizaron 24 ovinos de la cruza de razas Pelibuey × Katahdin, bajo un diseño de bloques completos al azar para evaluar el impacto del filtrado del agua de bebida sobre el rendimiento productivo. Los tratamientos consistieron en el suministro ad libitum de agua de dique filtrada (FILT; 256 ppm TDS) y agua de dique no filtrada (RAW; 776 ppm TDS). El experimento duró 89 días. En base al contenido de TDS, tanto FILT como RAW se califican como agua segura para bebida de ganado. Sin embargo, el consumo de agua fue 10% mayor en corderos que recibieron FILT. Así mismo, FILT mejoró la ganancia diaria de peso (8%, P = 0.03) y la eficiencia en la utilización de la energía de la dieta (2.9% P = 0.04). Los resultados de este estudio indican que el filtrado del agua calificada como "segura", mejora el comportamiento productivo de ovinos en finalización. Palabras clave: Corderos, finalización, calidad de agua, rendimiento productivo.

Journal of Tropical Medicine, 2021

The Mexican territory of the Yucatan Peninsula has a tropical climate and harbors a wide variety ... more The Mexican territory of the Yucatan Peninsula has a tropical climate and harbors a wide variety of domestic, synanthropic, and wild animals, as well as disease vectors. To determine the distribution of recorded zoonotic diseases in the Yucatan Peninsula, scientific publications referring to these diseases in animals and containing geographic coordinates of disease occurrence, were studied. The epidemiological bulletins of the national government were also consulted to obtain information on zoonotic diseases reported in humans in the territory. The territory harbors a wide variety of tropical zoonotic pathogens, including Trypanosoma cruzi, Leptospira interrogans, Toxoplasma gondii, Leishmania mexicana, Dirofilaria immitis, and Rickettsia felis. A variety of domestic, synanthropic, and wild animals act as hosts or reservoirs in the transmission cycle of the zoonotic diseases in the Yucatan Peninsula, and some spillover into human populations has also been recorded. There are still z...

Revista Mexicana de Ciencias Pecuarias, 2020

La comunidad de Ojos Negros está ubicada en el municipio de Ensenada Baja California, México. Des... more La comunidad de Ojos Negros está ubicada en el municipio de Ensenada Baja California, México. Desde 1930, los residentes locales fabrican un queso artesanal muy apreciado en la región; sin embargo, la leche cruda y el queso nunca han sido analizados por la calidad microbiológica y de higiene del producto final. El objetivo del presente estudio fue evaluar la calidad microbiológica, física y química de la leche cruda utilizada para producir queso y el queso artesanal producido en las 22 unidades de producción individuales. Se tomaron muestras de queso y leche de las unidades de producción para realizar pruebas microbiológicas. Se realizaron determinaciones físicas y químicas de proteínas, grasas y lactosa utilizando un analizador LACTOSCAN-S. Los resultados del análisis de la leche mostraron un contenido de proteína (33,11 g/l) y grasa (39,89 g/l) dentro de los parámetros de la normatividad. Para la calidad microbiológica de la leche, los resultados del recuento de mesófilos aeróbico...

Journal of Medicine and Biomedical Research, 2009

Revista de Investigaciones Veterinarias del Perú, 2020

El objetivo de este estudio fue detectar la presencia de circovirus porcino tipo 2 (PCV2) en hato... more El objetivo de este estudio fue detectar la presencia de circovirus porcino tipo 2 (PCV2) en hatos porcinos de Baja California, México, empleando la técnica de reacción en cadena de la polimerasa (PCR). Se colectaron 97 muestras de sangre de cerdos procedentes de 26 granjas. El ADN se extrajo a partir de la capa leucoplaquetaria y las muestras fueron agrupadas en 19 grupos de cinco muestras y uno de dos muestras para el análisis de PCR. Se utilizaron cebadores específicos para amplificar un fragmento de 264 pares de bases del ORF2 de PCV2 utilizando como control positivo una vacuna comercial. El fragmento viral se detectó en el 15% (3/20) de los grupos analizados. Este es el primer reporte en el que se evidencia la presencia de circovirus porcino tipo 2 en Baja California.

The objective of this study was to assess the presence of genotype 2 porcine reproductive and res... more The objective of this study was to assess the presence of genotype 2 porcine reproductive and respiratory syndrome virus (PRRSV-2) in Baja California (Baja), as well as the standardization of the qRT-PCR technique. A cross-sectional study was conducted from 2016 to 2017 in farms from Baja. It was obtained 97 blood samples from clinically healthy, notvaccinated boars and sows. Primers were designed and standardize, in order to perform qRTPCR tests from the buffy coat. Every positive results were confirmed by sequence studies. It Rev Mex Cienc Pecu 2021;12(4):1317-1325 1318 was found that 9.3 % of the samples were positive. The positive samples came from 66.6 % of the sampled regions. This study demonstrates the presence of PRRSV-2 in Baja, therefore, it is necessary to conduct epidemiological studies in order to identify the magnitude of the problem and to establish preventive and control measures.

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2016

Twenty-one Holstein bull calves (368 ± 5.2 kg) were used in order to evaluate the effects of comb... more Twenty-one Holstein bull calves (368 ± 5.2 kg) were used in order to evaluate the effects of combining recombinant bovine growth hormone (bST) and anabolic implants on growth performance and dietary energetics. Steers were assigned (7 repetitions/ treatment) to individual pens (16 m2) equipped with automatic waterers and 1.2 m fence-line feed bunks. The experiment lasted 56 days. Treatments were: 1) no bST, no implant; 2) implant; and 3) bST + implant. Compared to implanted cattle, the combination of exogenous bovine somatotropin and anabolic implants did not enhance growth performance or observed dietary energy. Compared to nonimplanted cattle, anabolic implants increased dry matter intake (DMI, 8.3%), average daily gain (ADG, 18.5%), gain efficiency (ADG:DMI; 7.9%), dietary net energy (6%), and apparent energy retention per unit of DMI (7%). Implantation reduced the estimated maintenance coefficients of intact Holstein calves by around 17%. The combinations of exogenous bovine somatotropin and anabolic implants did not enhance the growth performance or dietary energy of intact Holstein cattle fed a high-energy finishing diet.

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2015

Rabies is a fatal infection of the central nervous system produced by a Lyssavirus of the family ... more Rabies is a fatal infection of the central nervous system produced by a Lyssavirus of the family Rhabdoviridae. The virus is distributed worldwide and is primarily transmitted by rabid animal bites, with multiple reservoirs depending on the region. The vampire bat Desmodus rotundus is distributed in several states of Mexico and is considered the main vector of rabies in cattle. In the state of Baja California, no cases of paralytic rabies have been reported. In this work, we report the first three cases of rabies in feedlot cattle showing nervous signs, which were later confirmed in a reference laboratory by immunofluorescent analysis. Considering that the majority of feedlot cattle are introduced to Baja California from other states of Mexico where rabies is considered endemic, it is necessary to strengthen current programs of vaccination to reduce the rate of infected animals in their places of origin to avoid the spread of rabies to other geographic areas of the country.

Molecules and Cells, 2010

Arabidopsis thaliana WRKY39, a transcription factor that is induced by heat stress, is a member o... more Arabidopsis thaliana WRKY39, a transcription factor that is induced by heat stress, is a member of the group II WRKY proteins and responds to both abiotic and biotic stress. Heat-treated seeds and plants of WRKY39 knock-down mutants had increased susceptibility to heat stress, showing reduced germination, decreased survival, and elevated electrolyte leakage compared with wild-type plants. In contrast, WRKY39 over-expressing

Revista Mexicana de Ciencias Pecuarias

El complejo respiratorio bovino (CRB) es la principal causa de enfermedad y muerte en el ganado d... more El complejo respiratorio bovino (CRB) es la principal causa de enfermedad y muerte en el ganado de engorda en todo el mundo. Es un síndrome infeccioso multifactorial provocado por distintos virus y bacterias que disminuyen la eficiencia productiva y ocasionan pérdidas económicas. En México, el CRB se ha reportado en todas las regiones donde se engorda ganado; sin embargo, esos reportes carecen de información sobre la presencia del coronavirus respiratorio bovino (CVB), haciendo necesario contar con herramientas de diagnóstico confiables y precisas para detectar la presencia de CVB en el ganado que se engorda en México, para proponer las medidas sanitarias apropiadas para su manejo clínico. En este trabajo, se desarrolló una plataforma de diagnóstico molecular de PCR en tiempo real (rt-PCR) que amplifica un fragmento de la proteína S del CVB en muestras de exudado nasal. Al aplicar la plataforma rt-PCR para CVB en bovinos de engorda en aparente estado de salud y con signos de enferme...

Pathogens

Stray dogs are one of the main reservoirs of intestinal parasitic infections and some have zoonot... more Stray dogs are one of the main reservoirs of intestinal parasitic infections and some have zoonotic potential. An epidemiological survey was carried out between September 2017 and May 2018 in Mexicali Valley, this area sacrifices around 92,470 head of cattle monthly, which represents 27% of the national slaughter and has 71,307 hectares for crops. In this period the Municipal Animal Control Center during their routine visits to the Mexicali Valley captured 103 dogs. All the dogs were evaluated using copromicroscopic techniques to detect intestinal parasites. The general frequency of parasitic infections was 28.15% (29/103), the most frequent parasite being Dipylidium caninum 16.50% (17/103), followed by Taenia spp. 6.79% (7/103), Taenia hydatigena 2.91% (3/103), Taenia serialis 0.97% (1/103), Taenia pisiformis (0.97%), Toxocara canis 3.88% (4/103), Toxascaris leonina 1.94% (2/103), and Cystoisospora spp. 1.94% (2/103). No significant statistical associations were found between paras...

Journal of Apicultural Research

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2017

Bovine respiratory disease (BRD) is the main reason for economic loss in feedlots. A cross-sectio... more Bovine respiratory disease (BRD) is the main reason for economic loss in feedlots. A cross-sectional study was conducted in order to detect the pathogens involved in BRD. A total of 88 animals with respiratory signs were sampled for diagnosis using PCR. The detected pathogens were bovine respiratory syncytial virus (80.6%), Mannheimia haemolytica (79.5%), Pasteurella multocida (68.1%), parainfluenza 3 virus (23.8%), bovine herpes virus-1 (20.4%), and bovine viral diarrhea virus (11.3%). The average number of treatments applied per animal was 1.3 with an estimated treatment cost of 16 USD per treatment/animal. Animals receiving more than one treatment averaged costs exceeding 38 USD per animal. In total, 77% of all animals received the first treatment during the first 3 weeks after arrival. We found a relationship between shrink percentage and the distance traveled by the livestock from its origin to the feedlot (P = 0.049). BRD represents a costly condition for feedlot operations. It is imperative that cattleman and veterinary practitioners recognize the necessity to apply additional preventive medicine strategies to reduce the impact of BRD. Preconditioning and a more systematic use of methaphylaxis may improve our ability to accurately identify the most effective strategies to reduce the impact of BRD.

TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCES, 2015

Twenty four male lambs (24.93±0.93 kg) were used in order to evaluate the effects of chromium met... more Twenty four male lambs (24.93±0.93 kg) were used in order to evaluate the effects of chromium methionine (Cr) supplementation in high-energy finishing diets on the carcass characteristics and chemical composition of longissimus muscle (LM).

Online Journal of Public Health Informatics, 2013

Objective To showcase One Border One Health, a binational, multidisciplinary initiative in the Ca... more Objective To showcase One Border One Health, a binational, multidisciplinary initiative in the California/Baja California (CA/BC) border region whose aim is to reconfigure traditional species-specific approaches to surveillance for emerging and re-emerging pathogens.

Background Foot-and-mouth disease (FMD) is one of the most economically devastating vesicular dis... more Background Foot-and-mouth disease (FMD) is one of the most economically devastating vesicular diseases of livestock. Rapid detection of FMD virus (FMDV) infection is essential for prompt identification and prevention of the spread of an outbreak. We are currently ...