Two new coumarins from Euonymus hamiltonianus     

Tantray MA  Shawl AS  Khuroo MA  Bhat BA 《Fitoterapia》2008,79(3):234-235

Two new coumarins, named Euonidiol (1) and Euoniside (2) were isolated from the aerial parts of Euonymus hamiltonianus.  相似文献   

Assessment of the fecundity,population growth and fatty acid composition of Apocyclops royi (Cyclopoida,Copepoda) fed on different microalgal diets          下载免费PDF全文

Y.‐J. Pan  I. Sadovskaya  J.‐S. Hwang  S. Souissi 《Aquaculture Nutrition》2018,24(3):970-978

The brackish cyclopoid copepod Apocyclops royi is used in Taiwanese aquaculture industry as a prey for fish larvae. This study investigated the effects of seven microalgal diets, namely single‐species diets of Isochrysis galbana (ISO), Nannochloropsis oculata (NAN), and Tetraselmis chui (TET), two‐species diets (ISO+NAN, ISO+TET and TET+NAN), and a three‐species diet (ISO+NAN+TET), on the population growth, female fecundity and fatty acid composition of A. royi. For reproductive traits, the combination ISO+NAN was found to be the most supportive diet for both population growth and female fecundity. For nutritional value, copepods fed ISO and ISO+NAN were detected to have the highest content of docosahexaenoic acid (DHA) (18.99% and 10.73% total fatty acid, respectively) and, more importantly, a high DHA/EPA ratio (6.09 and 4.09, respectively). Additionally, a comparison of fatty acid composition between copepods and microalgae gives a tentative indication that A. royi may have the ability to synthesize long‐chain polyunsaturated fatty acids (PUFA) from short‐chain PUFA. Our findings illustrate that ISO+NAN is the most suitable microalgal diet for mass culturing A. royi because it increases productivity and enhances the nutritional value of the copepods for use as fish larvae prey.  相似文献   

Effects of potential probiotic Bacillus subtilis KADR1 and its subcellular components on immune responses and disease resistance in Labeo rohita          下载免费PDF全文

Dharmaraj Ramesh  Sami Souissi 《Aquaculture Research》2018,49(1):367-377

The present study was conducted to determine the effects of Bacillus subtilisKADR1 and its subcellular components on immunity and disease resistance in Labeo rohita against Aeromonas hydrophila infection. Fish were fed diet containing different concentrations of live bacterial cells (DI‐10⁶, DII‐10⁸ and DIII‐10¹⁰ CFU/g) and another group of fish were immunized intraperitoneally with cellular components (WCPs, CWPs and ECPs) of Bacillus subtilisKADR1. After 4 weeks of trial, fish were challenged intraperitoneally with Aeromonas hydrophila cell suspension and survival percentage was recorded. Significantly higher post‐challenge survivability was recorded in fish groups fed 10⁸ CFU/g of KADR1 (80.24%; RPS = 75.76%) or immunized with WCPs (77.77%; RPS = 72.73%), compared with the control (18.51%). Analysis of immunological parameters viz. serum lysozyme, phagocytosis, serum total protein, respiratory burst, serum IgM levels, superoxide dismutase and alternative complement pathway activity reflected significant enhancement (p < .05) of immune response in fish fed 10⁶, 10⁸ and 10¹⁰ CFU/g of live cells, or immunized with cellular components of Bacillus subtilisKADR1, with the highest values were observed DII fed group, followed by the group immunized with WCPs. Our results suggest that dietary administration of Bacillus subtilisKADR1 at 10⁸ CFU/g can effectively enhance the immune responses and disease resistance in Labeo rohita against Aeromonas hydrophila.  相似文献   

Study of Heavy Metal Accumulation and Residual Toxicity in Soil Saturated with Phosphate Processing Wastewater     

Ali Mekki  Sami Sayadi 《Water, air, and soil pollution》2017,228(6):215

The effects of phosphate processing wastewater (PPWW) on heavy metal accumulation in a Mediterranean soil (Tunisia, North Africa) were investigated. Moreover, the residual toxicities of PPWW-irrigated soils extracts were assessed. Results showed that heavy metal accumulation was significantly higher in PPWW-irrigated soil extracts than in control soil. The heavy metal accumulation increased over time in treated soil samples and their average values followed the following order: Iron (Fe 252.72 mg l^?1) > Zinc (Zn 152.95 mg l^?1) > Lead (Pb 128.35 mg l^?1) > Copper (Cu 116.82 mg l^?1) > Cadmium (Cd 58.03 mg l^?1). The residual microtoxicity and phytotoxicity of the various treated soil samples extracts were evaluated by monitoring the bioluminescence inhibition (BI %) of Vibrio ficheri and the measurement of the germination indexes (GI %) of Lepidium sativum and Medicago sativa seeds. The results showed an important increase of residual toxicities of PPWW-treated soil extracts over time.  相似文献   

Performance,carcass characteristics and chemical composition of beef affected by lupine seed,rapeseed meal and soybean meal     

A. S. Sami  M. Schuster  F. J. Schwarz 《Journal of animal physiology and animal nutrition》2010,94(4):465-473

To test the effects of different protein sources and levels on performance, carcass characteristics and beef chemical composition, concentrates with three protein sources [Lupine seed (L), Rapeseed meal (R) and Soybean meal (S)] and two protein levels [‘normal protein’ (NP) or ‘high protein’ (HP)] were fed to 36 Simmental calves. Calves initially weighed 276 ± 3.9 kg and averaged 6 months of age and were randomly allocated to the six treatments. Maize silage was offered ad libitum and supplemented with increasing amounts of concentrates (wheat, maize grain, protein sources, vitamin–mineral mix). Normal protein and HP diets were formulated to contain 12.4% and 14.0% crude protein (CP) dry matter (DM) respectively. At the end of the fattening period of 278 days, the final live weight averaged 683 ± 14.7 kg. Neither level of protein nor its interaction with protein sources had any effects on most of the traits studied. Feeding the R diet significantly increased final weight, average daily gain (ADG), DM intake and CP intake in relation to the L diet; no differences were observed between the L and S diets for these measures. No differences were observed between the R and S groups in final weight or ADG, but the calves fed the R diet consumed more DM and CP than the calves fed the S diet. Bulls fed R diet had higher carcass weight and dressing percentage than the L groups, and no significant differences were detected between the S and L groups. Chemical composition of the Musculus longissimus dorsi was not significantly affected by source of protein. Also, the major saturated fatty acid (SFA) (C16:0 and C18:0) did not significantly differ among the three treatments. Samples from R group had significantly higher proportions of C16:1 t9, C18:1 c11, C18:2 c9 t11, C18:3 c9, 12, 15 and ΣC18:1 t fatty acids in relation to L and S groups. Although polyunsaturated fatty acid/SFA ratio was similar for the three dietary groups, n‐6/n‐3 ratio and Σn‐3 fatty acids content were significantly greater for bulls fed R diet in relation to those fed L and S diets.  相似文献   

Pre- and post-operative cardiac evaluation of dogs undergoing lobectomy and pneumonectomy     

Meri? Kocatürk  Hakan Salci  Zeki Yilmaz  A. Sami Bayram  J?rgen Koch 《Journal of veterinary science (Suw?n-si, Korea)》2010,11(3):257-264

This study aimed to assess the influence of lobectomy and pneumonectomy on cardiac rhythm and on the dimensions and function of the right-side of the heart. Twelve dogs undergoing lobectomy and eight dogs undergoing pneumonectomy were evaluated preoperatively and one month postoperatively with electrocardiography and Doppler echocardiography at rest. Pulmonary artery systolic pressure (PASP) was estimated by the tricuspid regurgitation jet (TRJ) via the pulse wave Doppler velocity method. Systemic inflammatory response syndrome criteria (SIRS) were also evaluated based on the clinical and hematological findings in response to lobectomy and pneumonectomy. Following lobectomy and pneumonectomy, we predominantly detected atrial fibrillation and varying degrees of atrioventricular block (AVB). Dogs that died within seven days of the lobectomy (n = 2) or pneumonectomy (n = 1) had complete AVB. Preoperative right atrial, right ventricular, and pulmonary artery dimensions increased gradually during the 30 days (p<0.05) following pneumonectomy, but did not undergo significant changes during that same period after lobectomy. Mean PASP was 56.0 ± 4.5 mmHg in dogs having significant TRJ after pneumonectomy. Pneumonectomy, but not lobectomy, could lead to increases (p<0.01) in the SIRS score within the first day post-surgery. In brief, it is important to conduct pre- and postoperative cardiac evaluation of dogs undergoing lung resections because cardiac problems are a common postoperative complication after such surgeries. In particular, complete AVB should be considered a life-threatening complication after pneumonectomy and lobectomy. In addition, pneumonectomy appears to increase the likelihood of pulmonary hypertension development in dogs.  相似文献   

Fungicidal effect of hydroxytyrosol-rich preparations from olive mill wastewater against Verticillium dahliae     

Thabèt Yangui  Sami SayadiAdel Gargoubi  Abdelhafidh Dhouib 《Crop Protection》2010

Verticillium dahliae cannot be reached by many fungicides during its parasitic phase inside the plants and few fungicides are available to cure plants once they are infected by this pathogen. A hydroxytyrosol-rich (29.27% weight/dry weight) olive mill wastewater (HROMW) and a hydroxytyrosol-rich (52.67% weight/dry weight) extract (HRE) were prepared from fresh olive mill wastewater (FOMW) using hydrolysis and post-hydrolysis purification processes, and were tested as bio-fungicides. The HROMW and HRE showed strong fungicidal activity in vitro against V. dahliae with minimal fungicidal concentrations (MFCs) of 28–56 mg L⁻¹ (dry weight). The HROMW and HRE at 15 g L⁻¹ (dry weight) resulted in a reduction in the viability of V. dahliae by >4 log units after 30 min of contact time according to European Standard EN 1275 (1997) standard method. In tomato pot growth experiments incorporation of HROMW and HRE into the soil reduced significantly Verticillium wilt disease incidence by 86 and 83% and wilt severity by 86 and 84.5%, respectively, compared to untreated plants.  相似文献   

Characterization of difenoconazole resistance in Lasiodiplodia theobromae from papaya in Brazil     

Yuan Li  Susan Satie Tsuji  Mengjun Hu  Marcos Paz Saraiva Cmara  Sami Jorge Michereff  Guido Schnabel  Fengping Chen 《Pest management science》2020,76(4):1344-1352

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Effect of feeding intensity and time on feed on intramuscular fatty acid composition of Simmental bulls     

Sami AS  Augustini C  Schwarz FJ 《Journal of animal physiology and animal nutrition》2004,88(5-6):179-187

Seventy-two Simmental bulls, weighing 489 kg initially and approximately 15 months old, were divided into four groups to determine the effects of feeding intensity and time on feed on intramuscular fatty acid (FA) composition. Two groups of 18 bulls each were extensively (E) or intensively (I) fed on maize silage and concentrates with a daily gain of 943 g (E) or 1371 g (I). Half of each group were slaughtered after 100 days (S) or 138 days (L) on feed. In addition to carcass fatness parameters, intramuscular FA composition was also measured. Only small differences in the sum of saturated FA (SFA) percentages were found with 47.7 and 47.5% FA methyl esters (FAME) for SE and LE, respectively, and 48.7% FAME for each of SI and LI. Monounsaturated fatty acids (MUFA) significantly increased with longer, and higher feeding intensity to 44.2% FAME (LI), whereas the other groups had similar contents of 41.9, 42.2 and 42.0% FAME (SE, LE and SI respectively). Polyunsaturated FA (PUFA) decreased with higher feeding intensity to 8.39% (SI) and 6.71% (LI) FAME (p < 0.05) in comparison with 9.48% (SE) and 9.54% (LE). Intensive feeding decreased the ratio of PUFA : SFA to 0.17 (SI) and 0.14 (LI, p < 0.05) in comparison with 0.20 (SE and LE). The mean conjugated linoleic acid (CLA) concentration was 0.41% FAME. Time on feed had only a small effect on the FA composition compared with feeding intensity. No significant relationships were detected between meat quality attributes and the pattern of FA.  相似文献   

Potential role of leptin in increase of fatty acid synthase gene expression in chicken liver   总被引：4，自引：0，他引：4  

Dridi S  Buyse J  Decuypere E  Taouis M 《Domestic animal endocrinology》2005,29(4):646-660

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