Anaerobic co‐digestion of perennials: Methane potential and digestate nitrogen fertilizer value          下载免费PDF全文

Dorette Sophie Müller‐Stöver  Guotao Sun  Pablo Kroff  Sune Tjalfe Thomsen  Henrik Hauggaard‐Nielsen 《植物养料与土壤学杂志》2016,179(6):696-704

Co‐digestion of crop biomass improves the traditional manure‐based biogas yield due to an increased content of easily degradable carbon compounds. In this study, the methane potential of three perennials (grass, legumes, and grass+legume) was determined using various amounts together with animal manure. The nitrogen (N) mineralization dynamics in soil and the N‐fertilizer value of the derived digestates were subsequently tested in both a soil incubation study and a pot experiment with spring barley. Digestion of all tested perennials together with a manure‐based inoculum increased the cumulative methane yield four to five times compared to digestion of the inoculum alone, with the highest increases observed with pure grass. However, the methane potential decreased along with increasing grass biomass concentration. In the plant pot experiment, all tested digestates increased barley shoot biomass by 40–170%, to an extent statistically comparable to mineral N fertilizer. However, the application of the digestate originating from fermentation with pure grass resulted in lower plant growth and a more fluctuating soil mineral N content throughout the incubation study compared to the other digestates. Considering the high dry matter and methane yield ha^?1, the possibility to substitute mineral N fertilizer inputs by leguminous biological N₂ fixation capacity, and the digestate fertilizer value, the integration of grass–legume mixtures or sole legumes into anaerobic digestion systems as co‐substrate for manure seems to be promising. This could furthermore contribute to the diversification of cropping systems for bioenergy production.  相似文献   

A review of silvopastoral systems in native forests of Nothofagus antarctica in southern Patagonia,Argentina     

Pablo Luis Peri  Héctor A. Bahamonde  María V. Lencinas  Verónica Gargaglione  Rosina Soler  Sebastián Ormaechea  Guillermo Martínez Pastur 《Agroforestry Systems》2016,90(6):933-960

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Incomplete Mixing in the Fate and Transport of Arsenic at a River Affected by Acid Drainage     

Paula Guerra  Christian Gonzalez  Cristian Escauriaza  Gonzalo Pizarro  Pablo Pasten 《Water, air, and soil pollution》2016,227(3):73

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Non‐target effects of two sunflower seed treatments on Orius insidiosus (Hemiptera: Anthocoridae)          下载免费PDF全文

Pablo C Gontijo  Valéria F Moscardini  JP Michaud  Geraldo A Carvalho 《Pest management science》2015,71(4):515-522

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Inclusion of fish and krill meal in extruded diets for Octopus vulgaris (Cuvier, 1797): assessment of acceptance     

Pablo Querol  Piedad S Morillo‐Velarde  Jesus Cerezo Valverde  Martinez Llorens Silvia  Andres Vicente Moñino  Miguel Jover Cerdá  Ana Tomás Vidal 《Aquaculture Research》2014,45(8):1421-1424

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Multiple abscesses caused by <Emphasis Type="Italic">Salmonella enterica</Emphasis> and <Emphasis Type="Italic">Corynebacterium pseudotuberculosis</Emphasis> in a dromedary camel     

Tejedor-Junco MT  Lupiola P  Caballero MJ  Corbera JA  Gutierrez C 《Tropical animal health and production》2009,41(5):711-714

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Retrospective serological survey of Porcine circovirus-2 infection in Mexico          下载免费PDF全文

Humberto Ramírez-Mendoza  Hctor Castillo-Jurez  Jesús Hernndez  Pablo Correa    Joaquim Segals 《Canadian journal of veterinary research》2009,73(1):21-24

Postweaning multisystemic wasting syndrome (PMWS) is considered a multifactorial emerging disease of which Porcine circovirus-2 (PCV-2) is the necessary infectious cause. However, retrospective studies have shown that PMWS is not a new disease and that PCV-2 has been circulating in pig farms for years. Most of these studies were performed in Europe and Asia; only a few were performed in North or South America.  相似文献   

Di-tri-octahedral smectite for the prevention of post-operative diarrhea in equids with surgical disease of the large intestine: Results of a randomized clinical trial     

Diana M. Hassel  Phoebe A. Smith  Jorge E. Nieto  Pablo Beldomenico  Sharon J. Spier 《Veterinary journal (London, England : 1997)》2009,182(2):210-214

The aim of this study was to evaluate the effects of a commercially available di-tri-octahedral (DTO) smectite product on clinical signs and prevalence of post-operative diarrhea in horses with colic associated with disease of the large intestine. Sixty-seven horses with surgical disease of the large intestine were randomly assigned to be treated with DTO smectite (n = 37; 0.5 kg via nasogastric intubation every 24 h for 3 days post-operatively) or a placebo (n = 30). The effect of treatment on fecal scores and clinical and hematological parameters, including heart rate, mucous membrane color, temperature, total white blood cell count, total neutrophil count and total plasma protein values, were determined.Horses treated with DTO smectite had a significant reduction in the prevalence of post-operative diarrhea (10.8%), compared with controls (41.4%). A significant improvement in mucous membrane color was observed 72 h post-operatively in horses receiving treatment, compared with placebo. Administration of DTO smectite to colic patients with disease of the large intestine reduced the occurrence of diarrhea in the early post-operative period.  相似文献   

A recombinant-based ELISA evaluating the efficacy of netobimin and albendazole in ruminants with naturally acquired fascioliasis     

María Sol Arias  Jos Luis Surez  G.V. Hillyer  Ivn Francisco  Enrique Calvo  Rita Snchez-Andrade  Pablo Díaz  Rubn Francisco  Pablo Díez-Baos  Patrocinio Morrondo  Adolfo Paz-Silva 《Veterinary journal (London, England : 1997)》2009,182(1):73-78

The therapeutic efficacy of albendazole and netobimin in ruminants with naturally occurring fascioliasis was investigated using a recombinant-based ELISA. The variation in the IgG response against a 2.9-kDa recombinant protein (FhrAPS), termed efficacy index (EI) 1, and the egg-output changes, termed EI 2, were used to evaluate drug efficacy.The values of EI 1 ranged between 0% and 50% in sheep, and between 0% and 30% in cattle after treatment with albendazole and netobimin. Similar EI 2 values were observed in sheep receiving albendazole or netobimin, but the highest values were found in cattle treated with netobimin. The significant reduction in the IgG response to FhrAPS found in this study shows promise in terms of developing alternative methods for evaluating the efficacy of chemotherapy against Fasciola hepatica in grazing ruminants.  相似文献   

Determination of volatile organic compound patterns characteristic of five unifloral honey by solid-phase microextraction-gas chromatography-mass spectrometry coupled to chemometrics     

Baroni MV  Nores ML  Díaz Mdel P  Chiabrando GA  Fassano JP  Costa C  Wunderlin DA 《Journal of agricultural and food chemistry》2006,54(19):7235-7241

We report the evaluation of the floral origin of honey by analysis of its volatile organic compounds (VOCs) profile, joined with the use of combined pattern recognition techniques. Honey samples, from five floral origins, were analyzed by headspace solid-phase microextraction-gas chromatography-mass spectrometry, selecting 35 VOCs out of the entire profiles, which were analyzed by hierarchical cluster analysis (HCA), stepwise discriminant analysis (SDA), and K-nearest-neighbor (KNN). Both HCA and SDA were used as exploratory tools to select a group of VOCs representing similitude and differences among studied origins. Thus, six out of 35 VOCs were selected, verifying their discriminating power by KNN, which afforded 93% correct classification. Therefore, we drastically reduced the amount of compounds under consideration but kept a good differentiation between floral origins. Selected compounds were identified as octanal, benzeneacetaldehyde, 1-octanol, 2-methoxyphenol, nonanal, and 2-H-1-benzopyran-2-one. The analysis of VOC profiles, coupled to HCA, SDA, and KNN, provides a feasible alternative to evaluate the botanical source of honey.  相似文献