SARS-CoV-2 natural infection in animals: a systematic review of studies and case reports and series     

D. Katterine Bonilla-Aldana  Alejandra García-Barco  S. Daniela Jimenez-Diaz  Jorge Luis Bonilla-Aldana  Maria C. Cardona-Trujillo  Fausto Muoz-Lara  Lysien I. Zambrano  Luis A. Salas-Matta  Alfonso J. Rodriguez-Morales 《The Veterinary quarterly》2021,41(1):250

COVID-19 pandemic is essentially a zoonotic disease. In this context, early in 2020, transmission from humans to certain animals began reporting; the number of studies has grown since. To estimate the pooled prevalence of SARS-CoV-2 natural infection in animals and to determine differences in prevalence between countries, years, animal types and diagnostic methods (RT-PCR or serological tests). A systematic literature review with meta-analysis using eight databases. Observational studies were included but analyzed separately. We performed a random-effects model meta-analysis to calculate the pooled prevalence and 95% confidence interval (95% CI) for prevalence studies and case series. After the screening, 65 reports were selected for full-text assessment and included for qualitative and quantitative analyses. A total of 24 reports assessed SARS-CoV-2 infection by RT-PCR, combining a total of 321,785 animals, yielding a pooled prevalence of 12.3% (95% CI 11.6%–13.0%). Also, a total of 17 studies additionally assessed serological response against SARS-CoV-2, including nine by ELISA, four by PRTN, one by MIA, one by immunochromatography (rest, two studies, the method was not specified), combining a total of 5319 animals, yielding a pooled prevalence of 29.4% (95% CI 22.9%–35.9%). A considerable proportion of animals resulted infected by SARS-CoV-2, ranking minks among the highest value, followed by dogs and cats. Further studies in other animals are required to define the extent and importance of natural infection due to SARS-CoV-2. These findings have multiple implications for public human and animal health. One Health approach in this context is critical for prevention and control.  相似文献   

Evidence for the up-regulation of stearoyl-ACP (Δ9) desaturase gene expression during cold acclimation   总被引：1，自引：0，他引：1  

Sandra E. Vega  Alfonso H. del Rio  John B. Bamberg  Jiwan P. Palta 《American Journal of Potato Research》2004,81(2):125-135

  相似文献   

The factors affecting the distribution of babesiosis in dogs in Poland     

Adaszek Ł  Martinez AC  Winiarczyk S 《Veterinary parasitology》2011,181(2-4):160-165

The aim of this paper was to determine the factors affecting the development of canine babesiosis in Poland. The studies included 800 animals from 16 polish voivodeships-districts (50 from each voivodeship) with suspected piroplasmosis. Hematological and molecular tests confirmed infections in 158 animals. Analysis of the genetic material using the Real-Time Sybr Green HRM technique showed that 96 dogs were infected with Babesia canis 18S RNA-A and 62 with B. canis 18S RNA-B. It was observed that the disease occurs more often in eastern Poland (OR: 8.91; CI: 5.7-13.8), in males (OR: 1.04; CI: 0.7-1.5) and especially in rural areas (OR: 1.7; CI: 1.2-2.4). More prone to infection were pure-bred dogs (OR: 2.24; CI: 1.6-3.2), young animals under 1 year old (OR: 0.73; CI: 0.4-1.5), animals that had suffered from babesiosis in the past (OR: 17.9; CI: 10.9-29.2) and those that had not received preventive measures against ectoparasites (OR: 0.32; CI: 0.2-0.5). Knowledge of the factors facilitating the development of canine babesiosis helps to understand the causal connection between the dogs' exposure to the pathogen and the development of the disease and to limit the occurrence of the infection in these animals, to diagnose it early and to start proper treatment before serious complications develop.  相似文献   

Nutrient status of apple leaves not affected by three years of irrigation using partial rootzone drying     

Jorge A. Zegbe  Alfonso Serna‐Pérez  José Antonio González‐Fuentes 《植物养料与土壤学杂志》2011,174(3):459-464

Partial rootzone drying (PRD) is a water‐saving irrigation technology that may affect apple (Malus domestica Borkh cv. Golden Delicious/Malling7)‐tree nutrition if applied for an extended period. The objective of this study was to test the hypothesis that long‐term application of PRD causes seasonal changes in macro‐ and micronutrients of apple leaves. The irrigation treatments were: (1) commercial irrigation as control (CI) and (2) PRD. After 3 years of evaluation, PRD irrigation had saved about 3240 m³ of water per hectare. Leaf xylem water potential was slightly lower in the PRD treatment than in CI. The seasonal concentration of macro‐ and micronutrients was comparable between treatments, although significant differences were found at times. The macronutrient concentrations were within the normal range in PRD apple leaves. All micronutrient concentrations were slightly above the normal range except for Zn, which was slightly below the normal range. No physiological disorders associated with plant nutrition were observed on leaves or fruits. Therefore, data suggest that PRD did not alter apple‐tree nutrition during the 3‐year trial. Thus, PRD may be feasible for apple production in Central Mexico. However, further studies need to be conducted in those regions where groundwater is the main water source for irrigation and rain is negligible, particularly during the growing season.  相似文献   

Productive behavior in growing kid goats and methane production with the inclusion of chokecherry leaf (Prunus salicifolia)     

Robles Jimenez  Lizbeth E.  Ruiz Perez  Jose A.  Nicolas  Di Lorenzo  Chay Canul  Alfonso J.  Ramirez-Rivera  Julio Cesar  Villegas-Estrada  Daniela  Vargas-Bello-Pérez  Einar  Gonzalez-Ronquillo  Manuel 《Tropical animal health and production》2020,52(3):1257-1267

Tropical Animal Health and Production - Currently for the reduction of methane (CH4) emissions are using fodder rich in condensed tannins, however, not yet known exactly how they act in the rumen...  相似文献   

Water and nutrient uptakes efficiencies in rosemary plants under different fertigation treatments     

Pedro García-Caparrós  Alfonso Llanderal Quiróz 《Journal of plant nutrition》2013,36(14):1668-1675

The aim of this work was to evaluate the effects of different fertigation treatments: T₀ (control treatment), T₁ (raw leachates from C. melo) and T₂ (raw leachates from C. melo blended with tap water (50/50% v/v)) on plant growth, nutrient concentration in leachate and water and nutrient use efficiencies of rosemary. At the end of experiment, rosemary plants fertigated with leachates decreased the total dry weight and the water use efficiency compared to the control treatment. The fertigation with leachates from C. melo affected the values of the nutrient concentrations in leachates from rosemary plants during the experimental period and improved the nitrogen (NUE) and phosphorus (PUE) use efficiencies compared to the control treatment. Our results indicate that reuse of horticultural leachates for the fertigation of rosemary plant in containers assumes a water and nutrient savings, but from an environmental point of view, there is a risk of pollution.  相似文献   

The Canon of Potato Science: 1. Genetic Diversity and Genebanks     

John B. Bamberg  Alfonso H. del Rio 《Potato Research》2007,50(3-4):207-210

  相似文献   

Silicon,biological seed treatment and cutting reduce the intensity of leaf spot diseases affecting Lolium multiflorum     

Alfonso D. Victoria Arellano  Emanueli B. Furtado  Tailine M. Holz  Paulo C. Pazdiora  Gustavo M. da Silva  Emerson M. Del Ponte  Leandro J. Dallagnol 《Plant pathology》2022,71(5):1056-1065

Italian ryegrass is a major pasture crop cultivated mainly for feeding cattle in southern Brazil. The choice of crop is based on nutritional quality and the shortage of pastures that occur during the winter in the southernmost part of Brazil. In this region, the production of biomass and seeds are threatened by diseases, in particular fungal diseases that affect the foliage. In this study we identified and monitored the natural occurrence of a complex of leaf spotting diseases and evaluated the effects of combined management practices to reduce the intensity of foliar diseases: seed treatment with Trichoderma atroviride, soil amendment with silicon and cutting frequency (none, one or two cuts). Three diseases were present in a two-season experiment: grey leaf spot (Pyricularia oryzae), brown leaf spot (Bipolaris sorokiniana) and parrot's eye leaf spot (Cercospora sp.). Grey leaf spot had the highest severity, regardless of treatment, during the first season, and was the only disease present in the following season. Grey leaf spot dominated, and plants receiving only one cut were more prone to P. oryzae infection. The treatments with silicon or T. atroviride reduced the relative disease by 40% to 80%, in relation to untreated and uncut regimes. This study showed the main leaf spot diseases associated with L. multiflorum. Moreover, it demonstrates for the first time in the region the effectiveness of reducing leaf spot via the application of silicon in the soil, inoculation of seeds with T. atroviride and managing the cutting regime.  相似文献   

Changes in microbial utilization and fate of soil carbon following the addition of different fractions of anaerobic digestate to soils     

Marta Cattin  Kirk T. Semple  Marc Stutter  Gaetano Romano  Alfonso J. Lag-Brotons  Chris Parry  Ben W. J. Surridge 《European Journal of Soil Science》2021,72(6):2398-2413

  相似文献   

Postharvest treatment of isothiocyanates to control Alternaria rot in netted melon     

Rosalba Troncoso-Rojas  Yolanda Corral-Acosta  Alberto Sánchez-Estrada  Raymundo García-Estrada  Alfonso Aguilar-Valenzuela  Javier Ojeda-Contreras  Martín Ernesto Tiznado-Hernández 《Phytoparasitica》2009,37(5):445-451

The fungicidal activity of allyl-isothiocyanate (allyl-ITC), benzyl-isothiocyanate (benzyl-ITC) and a mixture of isothiocyanates (allyl-ITC, benzyl-ITC, phenyl-isothiocyanate and 2-phenylethyl-isothiocyanate; MCIT), was tested in netted melon infected with Alternaria alternata as, was the effect of these compounds on the postharvest quality. Fruits were inoculated with A. alternata and exposed to allyl-ITC, benzyl-ITC, or MCIT, at 0.25 and 0.5 mg ml⁻¹ concentrations. A commercial fungicide, Captan (CF), was used as a positive control. The fruit was stored at 20°C and 92% relative humidity for up to 8 days. Allyl-ITC and MCIT at both tested concentrations, significantly reduced Alternaria rot, by 82.73% to 88.67%. None of the ITC treatments had a significant effect on weight loss, total soluble solids, titratable acidity or pH. Fruits treated with 0.5 mg ml⁻¹ of AITC were more firm than others. Treatment with allyl-ITC, benzyl-ITC, or MCIT appears to be a promising alternative to synthetic fungicides for controlling postharvest diseases in netted melon.  相似文献