Evaluation of a cattle rapid test for early pregnancy diagnosis in sheep     

de Miranda e Silva Chaves  Camila  da Costa  Ricardo Lopes Dias  Duarte  Keila Maria Roncato  Beltrame  Renato Travassos  Quirino  Celia Raquel 《Tropical animal health and production》2020,52(3):1345-1349

Tropical Animal Health and Production - The early pregnancy diagnosis allows optimizing production and timely management correction, with a greater reproductive output of livestock. The Idexx Rapid...  相似文献   

Controlled release of the herbicide norflurazon into water from ethylcellulose formulations   总被引：4，自引：0，他引：4  

Sopeña F  Cabrera A  Maqueda C  Morillo E 《Journal of agricultural and food chemistry》2005,53(9):3540-3547

The herbicide norflurazon was encapsulated in ethylcellulose (EC(40)) microspheres by the solvent evaporation technique to obtain controlled release formulations. The kinetics of release of the active ingredient into the aqueous solution from different preparations was determined. It was found that the percentage release of the incorporated herbicide was a function of the composition and formation conditions of the formulations (amount of emulsifying agent, EC(40)/herbicide ratio, stirring speed, and percentage of pore-forming agent). The percentage of the herbicide release was related to the properties of the different microspheres obtained, such as particle size distribution, herbicide loading, or surface morphology. The release percentage depended inversely on the particle size of the microspheres and directly on the content of active ingredient and emulsifying and pore-forming agents. An empirical equation was used to fit the herbicide release data, indicating that the release of norflurazon from the various formulations is controlled by a diffusion mechanism. The time taken for 50% of the active ingredient to be released into water (T(50)) was calculated, showing a wide variation among the different preparations (0.95-16.4 days).  相似文献   

Structural characterization of Peruvian carrot (Arracacia xanthorrhiza) starch and the effect of annealing on its semicrystalline structure     

Rocha TS  Cunha VA  Jane JL  Franco CM 《Journal of agricultural and food chemistry》2011,59(8):4208-4216

Structural characteristics of native and annealed Peruvian carrot (Arracacia xanthorrhiza) starches were determined and compared to those of cassava and potato starches. Peruvian carrot starch presented round and irregular shaped granules, low amylose content and B-type X-ray pattern. Amylopectin of this starch contained a large proportion of long (DP > 37) and short (DP 6-12) branched chains. These last ones may contribute to its low gelatinization temperature. After annealing, the gelatinization temperatures of all starches increased, but the ΔH and the crystallinity increased only in Peruvian carrot and potato starches. The annealing process promoted a higher exposure of Peruvian carrot amylose molecules, which were more quickly attacked by enzymes, whereas amylopectin molecules became more resistant to hydrolysis. Peruvian carrot starch had structural characteristics that differed from those of cassava and potato starches. Annealing affected the semicrystalline structure of this starch, enhancing its crystallinity, mainly due to a better interaction between amylopectin chains.  相似文献   

Ethical animal research – a pathway to zero tolerance          下载免费PDF全文

Celia M. Marr 《Equine veterinary journal》2015,47(1):3-5

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Fundamentals of arrhythmogenic mechanisms and treatment strategies for equine atrial fibrillation     

Antoine Premont  Samantha Balthes  Celia M. Marr  Kamalan Jeevaratnam 《Equine veterinary journal》2022,54(2):262-282

Atrial fibrillation (AF) is the most common pathological arrhythmia in horses. Although it is not usually a life-threatening condition on its own, it can cause poor performance and make the horse unsafe to ride. It is a complex multifactorial disease influenced by both genetic and environmental factors including exercise training, comorbidities or ageing. The interactions between all these factors in horses are still not completely understood and the pathophysiology of AF remains poorly defined. Exciting progress has been recently made in equine cardiac electrophysiology in terms of diagnosis and documentation methods such as cardiac mapping, implantable electrocardiogram (ECG) recording devices or computer-based ECG analysis that will hopefully improve our understanding of this disease. The available pharmaceutical and electrophysiological treatments have good efficacy and lead to a good prognosis for AF, but recurrence is a frequent issue that veterinarians have to face. This review aims to summarise our current understanding of equine cardiac electrophysiology and pathophysiology of equine AF while providing an overview of the mechanism of action for currently available treatments for equine AF.  相似文献   

Influence of organic amendments on Fe,Cu, Mn,and Zn availability and clay minerals of different soils     

Celia Maqueda  Esmeralda Morillo  Rafael Lopez  Tomas Undabeytia  Francisco Cabrera 《Archives of Agronomy and Soil Science》2013,59(5):599-613

The effects of application of composted olive mill wastewater sludge (A) and depotassified sugarbeet vinasse (V) on total diethylenetriaminepentaacetic acid (DTPA) and sequential extracted micronutrients were investigated. The mineralogy of the fine fraction of soils was also studied. The soils used were a Typic Rhodoxeralf (soil R), a Typic Xeropsamment (soil S), and a Typic Xerorthent (soil C). Fertilization with A and V during 3 years, in general did not significantly affect the total concentration of Fe, Cu, Mn, and Zn versus the control. However, the elements extracted with DTPA generally increased with the organic amendments, more with A than with V. The BCR (European Community Bureau of Reference) sequential extraction indicated that the addition of organic matter generally increased Zn and Mn in the two more available fractions. A great amount of Fe was found in the second and third fractions from the unamended and amended soils. Nevertheless, the sum of the three fractions was enhanced for the organic amendment, except for calcareous soil. The distribution of these elements in the different fractions was significantly affected by the type of soil. The addition of both fertilizers caused modifications in particle size and consequence redistribution of the calcite content between the different fractions.  相似文献   

Export growth and diversification in Algeria: lessons from China' s foreign trade experience     

Celia Bouzekri 《山东饲料》2013,(8)

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Export growth and diversification in Algeria:lessons from China’s foreign trade experience     

Celia Bouzekri 《山东饲料》2013,(11):52-53

Algeria like many of its Middle Eastern and North African(MENA) counterparts,rely heavily on the industry of fossil fuels,such as gas and petroleum.This big reliance of Algerian economy on hydrocarbon exports revenue makes it very vulnerable to external shocks.So since the late 1990s different measures had been adopted to help promote the diversification of exports,but so far the adoption of these measures,has mixed results and has failed to boost foreign trade out of Hydrocarbons exports in a significant way.But unlike Algeria,China has been the most successful developing country in this modern era of globalization.It was one of the poorest countries in the world in 1980s,and since initiating economic reform after 1978 its GDP has expanded at a steady rate over 10% and it`s foreign trade is considered as one of the most important in the world.Given these facts the purpose of this paper is to analyze,why Algeria struggles to develop and diversify its exports out of Hydrocarbons.And what are the engines of the impressive growth of china’s foreign trade,if any;lessons can Algeria take from china’s foreign trade experience.  相似文献   

European outbreak of atypical myopathy in the autumn 2009     

Gaby Van Galen DVM  MSc  DECEIM  Helene Amory DVM  PhD  DECEIM  Evita Busschers DVM  DACVS  Dominique Cassart DVM  PhD  Marco De Bruijn DVM  DECEIM  Vincent Gerber DVM  PhD  DECEIM  John Keen DVM  MSc  DECEIM  Laurence Lefere DVM  Christel Marcillaud Pitel DVM  Celia Marr DVM  PhD  DECEIM  Jessica‐M. V. Müller DVM  DECEIM  Xavier Pineau DVM  Claude Saegerman PhD  Charlotte Sandersen DVM  PhD  DECEIM  Didier Serteyn DVM  PhD  DECVAA  Sara Torfs DVM  Lucia Unger DVM  Denis Verwilghen DVM  MSc  DECVS  Dominique‐Marie Votion DVM  PhD 《Journal of Veterinary Emergency and Critical Care》2010,20(5):528-532

Background – Atypical myopathy is an acute, severe rhabdomyolysis occurring in grazing horses. In the beginning of October 2009, a new outbreak occurred in several European countries. Geographic, demographic and clinical data of the reported cases in the month October 2009 are described. Key Findings – The survival rate in this outbreak was 25%. The most frequently observed clinical signs were congested mucous membranes, dyspnea, tachycardia, depression, weakness, stiffness, recumbency, trembling, sweating, and myoglobinuria. Nonsurvivors were significantly more likely to be recumbent than survivors. Prognostic factors, symptomatic treatment, and preventive measures are discussed. Significance – Differences were encountered during the described outbreak of atypical myopathy in October 2009 compared with previous outbreaks reported. Equine practitioners should be aware that previous epidemiological studies have shown that after a high prevalence in the autumn, new cases are likely to occur in the following spring.  相似文献   

Growth,yield and fruit quality of ‘Van’ and ‘Stark Hardy Giant’ sweet cherry cultivars as influenced by grafting on different rootstocks     

Celia M. Cantín  Jorge Pinochet  Yolanda Gogorcena  María Ángeles Moreno 《Scientia Horticulturae》2010

The influence of Adara, CAB 6P, Gisela 5, MaxMa 14, Saint Lucie GF 64 (SL 64), Saint Lucie GF 405 (SL 405), and Tabel rootstocks onto vegetative growth, yield and fruit quality of ‘Van’ and ‘Stark Hardy Giant’ (SHG) sweet cherry cultivars was studied during 10 years after grafting. The experiment was performed in the Ebro Valley (Zaragoza, Spain), on a heavy and calcareous soil. Significant differences in some of these parameters such as vigour, yield, fruit size, soluble solids content (SSC), titratable acidity (TA), skin colour and fruit firmness were examined among rootstocks. In general, the highest vigour, annual and cumulative yield were induced by Adara rootstock, whereas Gisela 5 induced the lowest when grafted with both cultivars. The highest yield efficiency was induced by Gisela 5 due to its low trunk cross-sectional area (TCSA), together with Adara, CAB 6P and Tabel for ‘SHG’ cultivar. Regarding fruit quality, Adara, CAB 6P and MaxMa 14 showed, in general, the highest fruit weight and the more attractive skin colour for both sweet cherry cultivars. Furthermore, the high yield shown by Adara did not significantly affect its fruit size. Cherries of trees grafted on Adara also showed high firmness, which implies a better resistance to post-harvest damage. CAB 6P showed a tendency to induce higher TA. Despite the higher firmness of fruits on Gisela 5 and its tendency to induce higher SSC and ripening index, the smaller size fruits together with the less attractive skin colour resulted in a non-interesting rootstock in terms of fruit quality for our growing conditions. Interesting correlations were found among quality parameters, such as the positive correlation showed by SSC with fruit weight and TA. The work demonstrates that the scion–rootstock combination influences some important sweet cherry attributes such as vigour, yield, fruit size, acidity, skin colour and firmness.  相似文献