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131.
Falciglia Pietro P. Biondi Lorena Catalano Roberto Immè Giuseppina Romano Stefano Vagliasindi Federico G. A. 《Journal of Soils and Sediments》2018,18(6):2399-2409
Journal of Soils and Sediments - Localization and quali-quantitative characterization of radionuclide-contaminated soils are essential for healthcare and remediation activities. However,... 相似文献
132.
Rodrigo B. Nogueira Lucas A. Pereira Alice F. Basso Ingrid S. da Fonseca Lorena A. Alves 《Veterinary research communications》2017,41(1):33-40
The aim of this study was to prospectively evaluate the carotid-femoral pulse wave velocity (PWV) values in healthy dogs using pulse wave Doppler ultrasound. A secondary aim was to determine the feasibility of this method and to report the intra- and interobserver reproducibilities of the PWV in conscious dogs. The data were studied in 30 healthy, adult, male (n?=?15) and female (n?=?15) dogs. The time interval marked between the R wave peak of the electrocardiogram and the intersection of the blood flow wave upstroke of the Doppler spectrum with the baseline of zero frequency was determined for the carotid (T1) and for the femoral (T2) arteries. The distance covered by the pulse wave (L) was determined. The PWV was then calculated using the following formula: L/T2 - T1. The mean values of PWV calculated from the total sample (n?=?30) evaluated were 13.41?±?2.20 m/s. No significant statistical difference was observed for the PWV measurements between males (14.82?±?3.18 m/s) and females (12.64?±?2.45 m/s). The analysis revealed no intra nor interobserver differences. A reasonable reproducibility of the PWV measurements was showed by intraclass correlation coefficients (ICC), and the coefficients of variation (CV). These data demonstrate that noninvasive vascular Doppler analysis is a feasible and reproducible method to determine the carotid-femoral PWV in dogs. 相似文献
133.
Lorena Soto Pinto Manuel Anzueto Martínez Pablo Martínez Zurimendi Guillermo Jiménez-Ferrer 《Small-Scale Forestry》2017,16(1):103-118
Increasingly, plantations for food, fiber and wood, are necessary to provide a growing world population. Agroforestry systems become more and more important, however these systems usually develop in marginal conditions, limited land, restricted funding, occasional technical support and above this, there is limited documentation and evaluation of innovated traditional systems in indigenous and small-scale contexts, which challenge forest scientists. The aim of this research was to assess the quality of trees in plots managed by Mayan indigenous farmers who planted agroforestry systems with fine wood species to increase the value of land and labor in localities with highly-marginal social conditions in Northern Chiapas, México. Twenty oldest plots were selected within a group of previously established plots (eight with improved fallow, six with shaded coffee and six with maize crop associated to trees) where forest inventories were carried out in nested 100 and 1000 m2-circular plots. In all plots tree diameter, height, quality indicators and the incidence of the pest Hypsipyla grandella were measured. Trees in the maize-associated-to-trees system are favored by the practices applied to annual crop during the first 3rd–5th years, a period in which they are free from the interference of other trees and benefit from favorable light conditions, weeding and a higher intensive care from the farmer while shaded coffee and improved fallow have higher tree densities and a more closed canopy condition than maize associated to trees. In consequence, maize associated to trees shows 68.1 % stems with good form; shaded coffee and improved fallow averaged 40.5 and 39.7 % of good quality stems, respectively; improved fallow exhibited a greater number of suppressed trees than shaded coffee and maize associated to trees (p < 0.0001). In addition, maize associated to trees showed the highest proportion of trees with commercial value with 56.9 %, followed by improved fallow with 28.2 %, and shaded coffee with 11.8 % (p < 0.0001); the rest were trees with domestic uses. However, maize associated to trees significantly result with high incidence of H. grandella probably due to the crown exposure. Timber volume averaged 92.9 ± 68.9 m3 for improved fallow, 77.3 ± 24.8 m3 for shaded coffee, and 52.5 ± 39.7 m3 for maize associated to trees. The value of the fine wood represents increment in income, variety of products and self-employment for households. Nonetheless, improved fallow and coffee plantations might benefit from the elimination of competitors from larger trees to favor promising immature ones and pruning, while maize crop associated to trees might benefit from opportune pruning for controlling the stem borer as well as tree replacement to achieve long term replacement and harvesting. 相似文献
134.
Núria Busquets Joaquim Segalés Lorena Córdoba Tufaria Mussá Elisa Crisci Gerard E. Martín-Valls Meritxell Simon-Grifé Marta Pérez-Simó Monica Pérez-Maíllo Jose I. Nú?ez Francesc X. Abad Lorenzo Fraile Sonia Pina Natalia Majó Albert Bensaid Mariano Domingo María Montoya 《Veterinary research》2010,41(5)
The recent pandemic caused by human influenza virus A(H1N1) 2009 contains ancestral gene segments from North American and Eurasian swine lineages as well as from avian and human influenza lineages. The emergence of this A(H1N1) 2009 poses a potential global threat for human health and the fact that it can infect other species, like pigs, favours a possible encounter with other influenza viruses circulating in swine herds. In Europe, H1N1, H1N2 and H3N2 subtypes of swine influenza virus currently have a high prevalence in commercial farms. To better assess the risk posed by the A(H1N1) 2009 in the actual situation of swine farms, we sought to analyze whether a previous infection with a circulating European avian-like swine A/Swine/Spain/53207/2004 (H1N1) influenza virus (hereafter referred to as SwH1N1) generated or not cross-protective immunity against a subsequent infection with the new human pandemic A/Catalonia/63/2009 (H1N1) influenza virus (hereafter referred to as pH1N1) 21 days apart. Pigs infected only with pH1N1 had mild to moderate pathological findings, consisting on broncho-interstitial pneumonia. However, pigs inoculated with SwH1N1 virus and subsequently infected with pH1N1 had very mild lung lesions, apparently attributed to the remaining lesions caused by SwH1N1 infection. These later pigs also exhibited boosted levels of specific antibodies. Finally, animals firstly infected with SwH1N1 virus and latter infected with pH1N1 exhibited undetectable viral RNA load in nasal swabs and lungs after challenge with pH1N1, indicating a cross-protective effect between both strains. 相似文献
135.
Dayane L. Teixeira Genaro C. Miranda-de la Lama Maria Pascual-Alonso Lorena Aguayo-Ulloa Morris Villarroel Gustavo A. María 《Journal of Veterinary Behavior: Clinical Applications and Research》2013,8(3):175-179
The aim of this study was to analyze the lamb's choice of bedding material when 4 different types of bedding materials and cement floor (CT) area were available during the fattening period. A total of 16 lambs were selected and distributed in 2 groups of 8 lambs each and fattened for 18 days. The animals were housed randomly in 1 of 2 pens that were subdivided into 5 areas. Four of these areas had 1 of the 4 types of flooring: sawdust (SU), waste of paper (WP), straw (ST), and rice husk (RH), whereas the fifth had a CT, opposite the feeding and drinking troughs. A video-recording device was set up in a room close to the pens to record maintenance behavior. Two kinds of recording were carried out: scan sampling every 10 minutes (7 am-9 pm) throughout the entire experiment, and continuous behavior sampling recorded continuously for 12 h/d (8 am-8 pm) on days 1, 7, and 14 (a total of 36 h/pen). The behavior patterns recorded during the experiment included lying down, standing, walking, feeding, and drinking. The occupancy rates for the different bedding areas were significantly different (P ≤ 0.001), and the lambs demonstrated a clear preference for SU bed, with a 47% occupancy rate, followed by WP (17%), ST, and RH, with occupancy rates of nearly 6% and 7%, respectively. The occupancy rate in the area with no bedding material (CT) was 21%. Significant differences were also found in behavior patterns between the bedding zones. When the lambs on the SU bedding were observed, 80% of the time they were lying down and 20% of the time standing. When they occupied the WP area, they spent 63% of the time lying down and 37% standing; for the ST bedding, the rates were 23% lying down and 77% standing; and when the lambs were observed in the area with RH flooring, they spent 40% of the time lying down and 60% standing. The clear preference shown by the lambs for SU may be associated to the SU's physical and thermal properties compared with ST. If all factors are taken into account (cost, animal preferences, and technical performance), WP bedding becomes a interesting material as an alternative to the ST bedding traditionally used by sheep farmers. 相似文献
136.
Identity profiles based on social strategies,morphology, physiology,and cognitive abilities in goats
M. Pascual-Alonso G.A. María W.S. Sepúlveda M. Villarroel L. Aguayo-Ulloa F. Galindo G.C. Miranda-de la Lama 《Journal of Veterinary Behavior: Clinical Applications and Research》2013,8(6):458-465
The aim of this study was to analyze the structure of identity profiles based on social strategies, morphology, physiology, and cognitive abilities in domestic goats. Social interactions of 33 goats were recorded over a period of 16 days for 96 hours. Blood samples and morphological measurements were taken from each animal, and they were each put through a T-maze test. Using the test of factor analysis, 3 of 7 types of social interactions concentrated 76.6% of the variance. They were named the “avoider” factor (21.20%), “nonagonistic” factor (16.30%), and “agonistic” factor (39.10%). Subsequently, a hierarchical cluster analysis was performed to characterize identity profiles (groups of similar animals), which could help to explain the possible association between social strategies (obtained using the factor analysis) and index of success, social and individual behaviors, and morphological, physiological, and cognitive characteristics. The results suggest the existence of 4 clusters or identity profiles, which were termed “aggressive,” “affiliative,” “passive,” and “avoider.” When they were compared between clusters, each identity profile had significant differences regarding all social variables, feeding and resting variables, most of the physiological measures, and all the morphological characteristics. The resolution time for the T-maze was significantly different between clusters and days. In conclusion, associating social strategies with details of behavior, physiology, and morphology provides a more robust idea of identity profiles adopted by goats under intensive farm conditions and suggests a richer diversity of strategies used by goats. 相似文献
137.
Lipej Z Segalés J Jemersić L Olvera A Roić B Novosel D Mihaljević Z Manojlović L 《Acta veterinaria Hungarica》2007,55(3):389-404
This report describes the first case of postweaning multisystemic wasting syndrome (PMWS) in wild boar in Croatia. During the winter season of 2004, eight wild young piglets (of approximately 2 to 5 months of age) were found dead in a fenced hunting area. Polymerase chain reaction (PCR) was carried out on mesenteric lymph nodes and all animals yielded positive results. In one of these animals diagnosis of PMWS was established based on the three key diagnostic criteria including the clinical manifestation, moderate lymphoid lesions consisting of lymphocyte depletion and granulomatous inflammation, and detection of the presence of PCV2 genome within the lymphoid lesions by in situ hybridisation (ISH). Three additional wild piglets had also mild PMWS-like lesions and a low amount of PCV2 was also found. No PMWS-like lesions or PCV2 genome were detected in the rest of the wild piglets studied. Three PCR-positive isolates were partially sequenced, which confirmed the diagnosis of PCV2 and demonstrated that the three sequences were genetically identical. The phylogenetic analysis of a representative PCV2 isolate indicated that its sequence (DQ875444) is grouped in a separate branch with Hungarian isolate (AY256460) and differs from any of the annotated sequences. 相似文献
138.
Gustavo J. Macchi Marcelo Pjaro María I. Militelli Natalia Radovani Lorena Rivas 《Fisheries Research》2006,80(2-3):345-349
Effects of maternal age–size and condition on oocyte dry weight were analysed for Merluccius hubbsi. Samples of mature females were collected in the Patagonian spawning area during 10 research surveys carried out between 2000 and 2005. Dry weight of 50 hydrated oocytes ranged from 0.80 to 1.90 mg. Relationships of this variable with total length and age were best described by a logarithmic model during the spawning peak. At the beginning and at the end of the reproductive season no significant relationship between these variables was observed, but a decrease in egg dry weight was detected during the spawning period. In general, young spawners (≤5-year-old) showed more variability in egg dry weight, which was associated with a reproductive season shorter than that of old females. Relative condition factor did not shows a significant relationship with oocyte dry weight, and mean values of this index were similar for different months of the spawning seasons analysed. 相似文献
139.
Massimiliano Baratelli Lorena Córdoba Lester J. Pérez Jaime Maldonado Lorenzo Fraile José I. Núñez Maria Montoya 《Research in veterinary science》2014
Swine influenza virus is one of the most important pathogens involved in the swine respiratory disease complex. Recent serological surveys showed a high prevalence of swine influenza strains belonging to the H1N1, H1N2 and H3N2 subtypes circulating in pigs in Spain. However, little is known about their genome sequence. Five swine influenza strains were isolated from some unrelated outbreaks occurred during 2006–2007, and their complete genome sequences were determined. Phylogenetic analysis revealed that they belonged to the lineages “Avian-Like” H1N1, “Human-Like” H3N2, and “Human-Like” H1N2, showing tight relationships with early or contemporary strains described in Europe. Notably, one virus of the H1N2 subtype showed genetic and antigenic divergence with the European contemporary strains or vaccinal strains of the same subtype, suggesting that some local and divergent clusters of the virus may pass unnoticed in routinary subtyping. Finally, analysis on the entire pattern of genome segments suggested that a second reassortment event could have influenced the evolution of that divergent H1N2 strain. 相似文献
140.
Jelena Prpi? Tomislav Keros Tomislav Bedekovi? Dragan Brni? ?eljko Cvetni? Besi Roi? Lorena Jemer?i? 《Irish veterinary journal》2014,67(1):9