L. Figueras - Academia.edu (original) (raw)

Papers by L. Figueras

Animal - science proceedings

XXXI Jornadas científicas y X Internacionales SEOC (Zamora) (2006), p. 307-309, 2006

XXXVIII Congreso Nacional y XIV Internacional de la Sociedad Española de Ovinotecnia y Caprinotecnia (SEOC), Málaga, España, 18-20 de Septiembre de 2013, 2013

Normalmente, asociamos Tribulus terrestris con fotosensibilizacion secundaria en pequenos rumiant... more Normalmente, asociamos Tribulus terrestris con fotosensibilizacion secundaria en pequenos rumiantes, pero tambien se describen problemas relacionados con su contenido en alcaloides y trastornos locomotores con alteracion degenerativa de la medula espinal. En el presente caso se describe otra alteracion locomotora detectada en un rebano de ovejas de raza Rasa Aragonesa pastando barbechos en los que habia crecido gran cantidad de T. Terrestris. La afeccion se localizaba a nivel de la pezuna y tras el examen detenido de los animales afectados y descartando otras patologias de la parte distal de la extremidad, se concluyo que se trataba de un proceso infeccioso en la pezna, de etiologia microbiana multiple y originado por contaminacion de las perforaciones de la suela durante el pastoreo en la que existen gran cantidad de plantas con fruto de T. Terrestris.

Veterinary Microbiology, 2020

Salmonella enterica subsp. diarizonae serotype 61: k: 1,5, (7) (SED) is a microorganism well adap... more Salmonella enterica subsp. diarizonae serotype 61: k: 1,5, (7) (SED) is a microorganism well adapted to sheep; however, it has also been described producing chronic proliferative rhinitis (CPR) in ovine. CPR causes a proliferative inflammation of the ventral nasal turbinates that may totally obstruct the nasal cavity. The main objective of the present study was to investigate the prevalence of SED in nostrils and stool of sheep without CPR clinical signs in commercial sheep farms of Spain with and without previous clinical cases of CPR. Five samplings were performed in 10 commercial sheep farms for one year. Samples from nostrils and faeces were taken from four animals without CPR visible clinical signs that belonged to four different age ranges at each farm visit. The prevalence of positive animals was 45.3 %, and the number of positive samples in nostrils was higher than in faeces (38.5 % vs 22.5 %). Only on one farm was no positive result obtained in the entire study. In almost all positive farms, sheep belonging to the youngest age ranges accounted for more than 50 % of positive isolates. Finally, farms with a previous diagnosis of CPR were 1.784 times more likely to have an animal with positive isolation than farms without a previous diagnosis. This could suggest that the infection pressure in the farm might favour the occurrence of clinical cases of the disease. However, further studies will be necessary to unravel why this saprophytic bacterium is able to cross the epithelial barrier causing severe rhinitis in certain animals.

Small Ruminant Research, 2019

Ovine respiratory complex is one of the main diseases affecting lambs in many countries. Similar ... more Ovine respiratory complex is one of the main diseases affecting lambs in many countries. Similar to other multifactorial diseases, it is highly influenced by the combination of the different factors that influence the animal, such as the environment, the production system in which they are reared or the host factors themselves. For this reason, epidemiological data of this disease are variable according to the risk factors present in each region and even in each flock. In order to understand the different options available at farm level for the epidemiological study of the ORC, the authors present results from five different studies carried out during the last years in sheep meat production systems in Spain. These studies make different approaches to the measurement of the importance of the ORC, ranging from the assessment of clinical cases and observation of lesions during necropsy to more complete analysis such as data collection on condemnations at the slaughterhouse. This practical approach should allow to analyse in a simple way the incidence of the disease in a farm and its maximum risk moments of presentation, which will be absolutely essential to design preventive plans adjusted to each situation.

Small Ruminant Research, 2019

Chronic proliferative rhinitis (CPR) is a slow and progressive upper respiratory tract disease of... more Chronic proliferative rhinitis (CPR) is a slow and progressive upper respiratory tract disease of sheep with a poor prognosis for affected animals. It causes a proliferative inflammation of the ventral nasal turbinates with uni or bilateral affection that may totally obstruct the nasal cavity. Salmonella enterica subspecies diarizonae serovar 61:k:1,5,(7) has been associated with the disease. This microorganism, host-adapted of tonsils and nasal cavity of sheep, has been isolated in pure culture from the nasal cavity in all reported cases of CPR. However, its etiopathogenesis, mechanism of transmission and its involvement with the disease are still unknown. The present article focuses on describing the current knowledge about this disease gathering the published information and offering some new data on the latest research carried out on chronic proliferative rhinitis in sheep.

Small Ruminant Research, 2019

Highlights  Oestrus ovis is a parasite of sheep and goats endemic in hot and dry regions  Oestr... more Highlights  Oestrus ovis is a parasite of sheep and goats endemic in hot and dry regions  Oestrosis appears as two clinical entities: the fly strike and the myiasis  Hypobiosis may be observed either inside or outside the host  Since their evolution depends on the weather, the treatment must be adapted to areas ABSTRACT Oestrus ovis (Linnaeus 1761) is a parasite of sheep and goats, in which the fly larvae are obligatory parasites of nasal and sinus cavities. Oestrosis is endemic in hot and dry regions, especially in Mediterranean areas of Europe, Africa and America. Infected animals firstly suffer from fly strike, when adult flies inject first stage larvae on their nostrils and secondly, hosts will suffer from nasal-sinus myiasis with varying clinical respiratory signs. The disturbance caused to small ruminants while grazing and the effects during development of larvae can have severe consequences on livestock production. The evolution of O. ovis depends on the weather; the parasite is very well-adapted to their environment, being able to undergo hypobiosis either inside or outside the host, according to the climatic environmental conditions and seasonality. Understanding the epidemiology and life cycle of O. ovis is crucial to design effective control measures of this myiasis. Moreover, O. ovis infestation is considered a zoonosis; it causes ophthalmomyiasis in man in many parts of the world. The present article focuses on describing the main information about this parasite gathered in the last 20 years.

Small Ruminant Research, 2017

Highlights  We have achieved a Salmonella enterica subsp. diarizonae experimental infection in s... more Highlights  We have achieved a Salmonella enterica subsp. diarizonae experimental infection in sheep  SED was isolated from nasal mucosa, lymph nodes and fecal samples from infected sheep  SED infection caused cell immunitary response in various degrees  No lesions were found associated to SED infection after 1 year post infection

The different factors affecting the birth and survival of lambs with low body weights and the pos... more The different factors affecting the birth and survival of lambs with low body weights and the positive effects of vitamins A, D and E fed to ewes during pregnancy on improving the survival of these lambs are described.

Boletín de la Sociedad Entomológica Aragonesa

Los simúlidos o moscas negras se limitaban hasta hace unos años a formar parte únicamente del eco... more Los simúlidos o moscas negras se limitaban hasta hace unos años a formar parte únicamente del ecosistema fluvial de los ríos españoles, siendo estudiados hasta entonces desde un punto de vista limnológico. En las dos últimas décadas se está produciendo un incremento poblacional de estos insectos, lo que está permitiendo a su vez la colonización de nuevos ecosistemas fluviales y agrícolas. Este hecho está ligado directamente con la mejora de la calidad de las aguas en nuestros cauces y la consiguiente aparición de macrófitos en los mismos. En el presente trabajo se aporta información actualizada sobre la expansión de los simúlidos en el noreste del territorio peninsular, así como la implicación que este fenómeno tiene sobre la salud humana y animal como consecuencia de las molestas y cada vez más frecuentes picaduras producidas por estos artrópodos. Asimismo se exponen aspectos de su biología y papel vectorial, además del impacto económico negativo que generan. Se aporta también info...

Animal - science proceedings

XXXI Jornadas científicas y X Internacionales SEOC (Zamora) (2006), p. 307-309, 2006

XXXVIII Congreso Nacional y XIV Internacional de la Sociedad Española de Ovinotecnia y Caprinotecnia (SEOC), Málaga, España, 18-20 de Septiembre de 2013, 2013

Normalmente, asociamos Tribulus terrestris con fotosensibilizacion secundaria en pequenos rumiant... more Normalmente, asociamos Tribulus terrestris con fotosensibilizacion secundaria en pequenos rumiantes, pero tambien se describen problemas relacionados con su contenido en alcaloides y trastornos locomotores con alteracion degenerativa de la medula espinal. En el presente caso se describe otra alteracion locomotora detectada en un rebano de ovejas de raza Rasa Aragonesa pastando barbechos en los que habia crecido gran cantidad de T. Terrestris. La afeccion se localizaba a nivel de la pezuna y tras el examen detenido de los animales afectados y descartando otras patologias de la parte distal de la extremidad, se concluyo que se trataba de un proceso infeccioso en la pezna, de etiologia microbiana multiple y originado por contaminacion de las perforaciones de la suela durante el pastoreo en la que existen gran cantidad de plantas con fruto de T. Terrestris.

Veterinary Microbiology, 2020

Salmonella enterica subsp. diarizonae serotype 61: k: 1,5, (7) (SED) is a microorganism well adap... more Salmonella enterica subsp. diarizonae serotype 61: k: 1,5, (7) (SED) is a microorganism well adapted to sheep; however, it has also been described producing chronic proliferative rhinitis (CPR) in ovine. CPR causes a proliferative inflammation of the ventral nasal turbinates that may totally obstruct the nasal cavity. The main objective of the present study was to investigate the prevalence of SED in nostrils and stool of sheep without CPR clinical signs in commercial sheep farms of Spain with and without previous clinical cases of CPR. Five samplings were performed in 10 commercial sheep farms for one year. Samples from nostrils and faeces were taken from four animals without CPR visible clinical signs that belonged to four different age ranges at each farm visit. The prevalence of positive animals was 45.3 %, and the number of positive samples in nostrils was higher than in faeces (38.5 % vs 22.5 %). Only on one farm was no positive result obtained in the entire study. In almost all positive farms, sheep belonging to the youngest age ranges accounted for more than 50 % of positive isolates. Finally, farms with a previous diagnosis of CPR were 1.784 times more likely to have an animal with positive isolation than farms without a previous diagnosis. This could suggest that the infection pressure in the farm might favour the occurrence of clinical cases of the disease. However, further studies will be necessary to unravel why this saprophytic bacterium is able to cross the epithelial barrier causing severe rhinitis in certain animals.

Small Ruminant Research, 2019

Ovine respiratory complex is one of the main diseases affecting lambs in many countries. Similar ... more Ovine respiratory complex is one of the main diseases affecting lambs in many countries. Similar to other multifactorial diseases, it is highly influenced by the combination of the different factors that influence the animal, such as the environment, the production system in which they are reared or the host factors themselves. For this reason, epidemiological data of this disease are variable according to the risk factors present in each region and even in each flock. In order to understand the different options available at farm level for the epidemiological study of the ORC, the authors present results from five different studies carried out during the last years in sheep meat production systems in Spain. These studies make different approaches to the measurement of the importance of the ORC, ranging from the assessment of clinical cases and observation of lesions during necropsy to more complete analysis such as data collection on condemnations at the slaughterhouse. This practical approach should allow to analyse in a simple way the incidence of the disease in a farm and its maximum risk moments of presentation, which will be absolutely essential to design preventive plans adjusted to each situation.

Small Ruminant Research, 2019

Chronic proliferative rhinitis (CPR) is a slow and progressive upper respiratory tract disease of... more Chronic proliferative rhinitis (CPR) is a slow and progressive upper respiratory tract disease of sheep with a poor prognosis for affected animals. It causes a proliferative inflammation of the ventral nasal turbinates with uni or bilateral affection that may totally obstruct the nasal cavity. Salmonella enterica subspecies diarizonae serovar 61:k:1,5,(7) has been associated with the disease. This microorganism, host-adapted of tonsils and nasal cavity of sheep, has been isolated in pure culture from the nasal cavity in all reported cases of CPR. However, its etiopathogenesis, mechanism of transmission and its involvement with the disease are still unknown. The present article focuses on describing the current knowledge about this disease gathering the published information and offering some new data on the latest research carried out on chronic proliferative rhinitis in sheep.

Small Ruminant Research, 2019

Highlights  Oestrus ovis is a parasite of sheep and goats endemic in hot and dry regions  Oestr... more Highlights  Oestrus ovis is a parasite of sheep and goats endemic in hot and dry regions  Oestrosis appears as two clinical entities: the fly strike and the myiasis  Hypobiosis may be observed either inside or outside the host  Since their evolution depends on the weather, the treatment must be adapted to areas ABSTRACT Oestrus ovis (Linnaeus 1761) is a parasite of sheep and goats, in which the fly larvae are obligatory parasites of nasal and sinus cavities. Oestrosis is endemic in hot and dry regions, especially in Mediterranean areas of Europe, Africa and America. Infected animals firstly suffer from fly strike, when adult flies inject first stage larvae on their nostrils and secondly, hosts will suffer from nasal-sinus myiasis with varying clinical respiratory signs. The disturbance caused to small ruminants while grazing and the effects during development of larvae can have severe consequences on livestock production. The evolution of O. ovis depends on the weather; the parasite is very well-adapted to their environment, being able to undergo hypobiosis either inside or outside the host, according to the climatic environmental conditions and seasonality. Understanding the epidemiology and life cycle of O. ovis is crucial to design effective control measures of this myiasis. Moreover, O. ovis infestation is considered a zoonosis; it causes ophthalmomyiasis in man in many parts of the world. The present article focuses on describing the main information about this parasite gathered in the last 20 years.

Small Ruminant Research, 2017

Highlights  We have achieved a Salmonella enterica subsp. diarizonae experimental infection in s... more Highlights  We have achieved a Salmonella enterica subsp. diarizonae experimental infection in sheep  SED was isolated from nasal mucosa, lymph nodes and fecal samples from infected sheep  SED infection caused cell immunitary response in various degrees  No lesions were found associated to SED infection after 1 year post infection

The different factors affecting the birth and survival of lambs with low body weights and the pos... more The different factors affecting the birth and survival of lambs with low body weights and the positive effects of vitamins A, D and E fed to ewes during pregnancy on improving the survival of these lambs are described.

Boletín de la Sociedad Entomológica Aragonesa

Los simúlidos o moscas negras se limitaban hasta hace unos años a formar parte únicamente del eco... more Los simúlidos o moscas negras se limitaban hasta hace unos años a formar parte únicamente del ecosistema fluvial de los ríos españoles, siendo estudiados hasta entonces desde un punto de vista limnológico. En las dos últimas décadas se está produciendo un incremento poblacional de estos insectos, lo que está permitiendo a su vez la colonización de nuevos ecosistemas fluviales y agrícolas. Este hecho está ligado directamente con la mejora de la calidad de las aguas en nuestros cauces y la consiguiente aparición de macrófitos en los mismos. En el presente trabajo se aporta información actualizada sobre la expansión de los simúlidos en el noreste del territorio peninsular, así como la implicación que este fenómeno tiene sobre la salud humana y animal como consecuencia de las molestas y cada vez más frecuentes picaduras producidas por estos artrópodos. Asimismo se exponen aspectos de su biología y papel vectorial, además del impacto económico negativo que generan. Se aporta también info...