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Allelopathic behaviour of three medicinal herbs viz. Rheum emodi, Saussaurea lappa and Potentilla fulgens, on some traditional food crops was examined. Germination of all the traditional food crops was reduced significantly under
aqueous extracts of S. lappa and P. fulgens but radicle and plumule growth of Amaranthus
caudatus and Eleusine coracana was reduced significantly under aqueous extracts of all three medicinal species. For marginal farmers sole medicinal plants
cultivation is not possible, therefore, medicinal plants based agroforestry is being propagated. 相似文献
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LG PAPAZOGLOU GD BRELLOU PL PAPADOPOULOU AK DESSIRIS 《Australian veterinary journal》2005,83(1-2):37-37
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AIM: To investigate the occurrence of resistance to macrocylic lactone (ML) anthelmintics by Ostertagia circumcincta in lambs on a sheep and cattle property in the North Island of New Zea- land. METHODS: Thirty lambs were randomly allocated to one of five equal-sized groups, consisting of an untreated control and four treatment groups. The treatments, which were administered at the manufacturer's recommended dose rates, included oral moxidectin, oral abamectin (both at 0.2 mg/kg), an albendazole-levamisole combination, and an albendazole-levamisole-ivermectin combination. Post mortem worm counts were undertaken 7 days after treatment to determine the efficacy of each anthelmintic. RESULTS: The albendazole-levamisole and albendazole-levam-isole-ivermectin combinations both reduced O. circumcincta burdens to zero whereas for moxidectin and abamectin efficacies of only 72% and 29%, respectively, were recorded. CONCLUSIONS: These results clearly demonstrated the occurrence of resistance to MLs by O. circumcincta. Although this is not the first occasion where resistance to this anthelmintic family has been detected in this parasite in sheep in New Zealand, it is the first instance that resistance to either moxidectin or abamectin has been reported. 相似文献
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Miguel Gozalo-Marcilla Stelio PL. Luna Nadia Crosignani José NP Puoli Filho Fábio S. Possebon Ludovic Pelligand Polly M. Taylor 《Veterinary anaesthesia and analgesia》2017,44(5):1116-1127
Objective
To evaluate intravenous (IV) detomidine with methadone in horses to identify a combination which provides sedation and antinociception without adverse effects.Study design
Randomized, placebo-controlled, blinded, crossover.Animals
A group of eight adult healthy horses aged (mean ± standard deviation) 7 ± 2 years and 372 ± 27 kg.Methods
A total of six treatments were administered IV: saline (SAL); detomidine (5 μg kg?1; DET); methadone (0.2 mg kg?1; MET) alone or combined with detomidine [2.5 (MLD), 5 (MMD) or 10 (MHD) μg kg?1]. Thermal, mechanical and electrical nociceptive thresholds were measured, and sedation, head height above ground (HHAG), cardiopulmonary variables and intestinal motility were evaluated at 5, 15, 30, 45, 60, 75, 90, 120 and 180 minutes. Normal data were analyzed by mixed-model analysis of variance and non-normal by Kruskal–Wallis (p < 0.05).Results
Nociceptive thresholds in horses administered methadone with the higher doses of detomidine (MMD, MHD) were increased above baseline to a greater degree and for longer duration (MMD: 15–30 minutes, MHD: 30–60 minutes) than in horses administered low dose with methadone or detomidine alone (MLD, DET: 5–15 minutes). No increases in nociceptive thresholds were recorded in SAL or MET. Compared with baseline, HHAG was lower for 30 minutes in MMD and DET, and for 45 minutes in MHD. No significant sedation was observed in SAL, MET or MLD. Intestinal motility was reduced for 75 minutes in MHD and for 30 minutes in all other treatments.Conclusions
Methadone (0.2 mg kg?1) potentiated the antinociception produced by detomidine (5 μg kg?1), with minimal sedative effects.Clinical relevance
Detomidine (5 μg kg?1) with methadone (0.2 mg kg?1) produced antinociception without the adverse effects of higher doses of detomidine. 相似文献20.
Seed germination and seedling extension growth in Ougeinia dalbergioides Benth. under water and salinity stress 总被引：5，自引：0，他引：5
Seed germination and early seedling growth were studied in Ougeinia dalbergioides Benth. varn. Sandan seeds under different levels of water and salinity stresses in laboratory conditions. Increasing level of water and salinity stresses caused reduction in total as well as rate of germination which was significant beyond –0.6 MPa and 0.16 M levels of water and salinity stresses, respectively. The reduction was more in rate than in total percent germination and in extension growth than in germination. Germination Index (GI) decreased while Mean Germination Time (MGT) increased with increasing stress. The water uptake by seeds also declined with increasing stresses. Early seedling growth as well as Seedling Vigour Index (SVI) markedly decreased under both the stresses. 相似文献