Scielo RSS <![CDATA[Veterinaria México OA]]> vol. 4 num. 4 lang. es <![CDATA[SciELO Logo]]> <![CDATA[First identification of Herpesvirus infections among endemic and exotic psittacines in Mexico]]> Abstract: The illegal trafficking of exotic birds such as parrots is now the third most lucrative business in the world and has been a problem for several years. As a result of this trafficking, there has been an increase in the emergence of exotic diseases. Herpesvirus is a pathogen of psittacines that has not been identified in Mexico to date. Through the use of polymerase chain reaction (PCR) assays and pathological analyses, the present study demonstrates the presence of herpesvirus in endemic and exotic psittacines in Mexico. The study was based on 50 birds, with clinical signs of herpervirus infection, and 45 clinically healthy birds. DNA samples were obtained from proctodaeal cells of the healthy birds, collected through the use of an enema; additionally, the liver, kidneys, brain, large intestines, and lungs of five birds exhibiting clinical signs suggestive of herpesvirus infection, were collected and fixed in buffered formalin for histopathological examination. PCR assays revealed herpesvirus infection in 8 clinically healthy birds, including four exotic species, and one endemic species. On necropsy, four of the five birds with clinical signs of herpesvirus infection showed lesions caused by herpesvirus, and the presence of intranuclear inclusion bodies in various tissues. Thus, these results demonstrate that there is a high risk of herpesvirus infection in endemic Mexican psittacines, which could significantly impact the health of these populations. <![CDATA[Monitorización del ganado lidia con tecnología GPS-GPRS; estudio del comportamiento en pastoreo y la distribución espacial]]> Abstract The behavior of grazing cattle has not been studied as much as farmed animals. In certain breeds, reared in extensive systems, human presence can cause an interruption or modification in their ethological patterns moving away from the person watching them. The use of technologies like a Global Position System and a General Packet Radio Service (GPS-GPRS) allows monitoring bovine animals exploited in extensive systems, providing information in real time about distances traveled, home range grazing areas, frequented territories, behavior patterns, etc. In the present work, GPS-GPRS collars were used to monitor 21 cows of to the lidia cattle breed, with different ages, and from three different herds in the Salamanca province (Spain). The study lasted 8 months, the animals being distributed in enclosures of different dimensions and orographic characteristics, geographic position data being collected every 15 minutes. The proper functioning of the GPS-GPRS devices was proven and home range grazing area for each animal has been calculated, with an average of 56 hectares. A graph of animals’ circadian rhythm with the distances traveled for hours has been developed. A trend was observed to start daily activity hours before dawn, diminishing its activity with the evening and overnight, with a night’s rest phase of about 7 hours. We also report daily distance traveled (3.15 km on average), finding differences depending on age, available space allowance/animal, daylight and the season. Our results could be of relevance for a better pasture management using enclosures of size that increase the use of all the surface available.<hr/>Resumen: En los últimos años, el comportamiento del ganado vacuno en pastoreo ha sido poco estudiado, en comparación con el comportamiento en granja. Además, en determinadas razas criadas en sistemas extensivos, la presencia humana puede modificar o interrumpir sus pautas etológicas: los animales se alejan de quien los observa. El uso de la tecnología GPS-GPRS en la monitorización de bovinos explotados en régimen extensivo nos permite disponer de datos de interés en tiempo real; proporciona información sobre desplazamientos, distancias recorridas, territorio pastoreado, zonas más frecuentadas, pautas de comportamiento, etc. En esta investigación, se monitorizaron, mediante la implantación de collares GPS, 21 vacas de diferentes edades, de tres ganaderías de la provincia de Salamanca pertenecientes a la raza bovina lidia. El estudio se llevó a cabo durante ocho meses, distribuimos a los animales en cercados de diferentes dimensiones y características orográficas, y recogimos datos de su posición geográfica cada 15 minutos. Además de corroborar el buen funcionamiento de los dispositivos GPS, se estableció el área de campeo para cada animal: la media fue de 56 ha. Elaboramos un gráfico de su ritmo circadiano con las distancias recorridas por horas, donde se observa una tendencia a iniciar la actividad diaria unas horas antes del amanecer, atenuar su actividad al anochecer y durante la noche, así como mantener una fase de reposo nocturno de aproximadamente siete horas. También analizamos la distancia diaria recorrida (3.15 km media/animal), donde encontramos diferencias sustanciales en función de la edad, la superficie/animal disponible en el cercado, el día y la noche, y la época del año. Nuestros resultados son valiosos para un mejor manejo de las superficies pastables con cercados en los que los animales utilicen toda la superficie disponible. <![CDATA[The welfare of pigs in rustic and technified production systems using the Welfare Quality protocols of pigs in Mexico: Validity of indicators of animal welfare as part of the sustainability criteria of pig production systems]]> Abstract: The Welfare Quality® (WQ) protocols have been developed as a tool for the assessment of farm animal welfare based on scientific evidence. Animal welfare (AW) is part of the sustainability criteria of livestock production. A study was carried out in four states of Central Mexico in seven rustic (rPS) and six technified (tPS) production systems using the WQ protocol with the objective of providing an initial approximation of the welfare of animals and to discuss the validity of indicators of AW. The results showed that the animals housed in rustic units presented better results in the Good Health category and with respect to the criterion expression of social behaviour, while the frequency of criteria concerning Positive emotional states was higher in animals in the technified units. In the changing context in which the farms operate, including changing agricultural policies, new environmental and food safety regulations, variability of climatic conditions, and volatility in prices of inputs and outputs, it is not only the attributes referring to productivity and efficiency that become relevant. It is concluded that the criteria related to the WQ principles of health and behaviour are sensitive to changes in the housing and management of pigs. The high occurrences of health and behaviour problems recorded in technified systems are an indicator of poor welfare.