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51.
Sandhu MA Rahman ZU Rahman SU Hassan IJ 《Veterinary immunology and immunopathology》2007,120(3-4):106-114
The aim of this study was to compare the ability of laying hen abdominal macrophages during the second production cycle by using two different methods of induced molting. Two groups of Single Comb White Leghorn hens were induced to molt at the end of their first production cycle using feed restriction and ZnO supplementation. Macrophages were isolated from the abdomen and in vitro cytotoxic ability, at which point macrophage bactericidal moiety nitric oxide (NO) was recorded. Serum IgM and IgG titers against sheep red blood cells (SRBC) were determined at various stages: before molting (BM), 5% production level (5P), peak production stage (PP) and at the end of production (EP) level after fast and Zn-induced molt. Macrophages adherence percentage remained unaffected (p ≤ 0.05) during all production cycles, whereas the macrophage engulfment percentage and engulfment/cell was significantly higher (p ≤ 0.05) at PP in both fast and Zn-induced molted groups, as compared to all other studied stages. Macrophage NO production was increased (p ≤ 0.05) at PP and after SRBC and lipopolysaccrides (LPS) stimulus, when molted with ZnO supplementation. Serum total antibody titer against SRBC increased serum IgG and IgM titers during the second production cycle by Zn-induced molt. However, molting stress greatly reduced IgG and IgM production at the 5P stage. Serum Zn concentration increased with the onset of production but decreased at the EP stage irrespective of their molting regimes. Our results validate the strengthened innate and acquired immune response during the second production cycle after Zn-induced molting instead of fasting. 相似文献
52.
A. Mehmood S. Luo N. M. Ahmad C. Dong T. Mahmood Y. Sajjad M. J. Jaskani P. Sharp 《Genetic Resources and Crop Evolution》2016,63(8):1345-1361
53.
Mukete Beckline Daniel Etongo Sajjad Saeed Abdul Mannan 《Journal of Sustainable Forestry》2018,37(6):592-618
Protected areas serve two objectives, biodiversity conservation and securing of ecosystem services. But the recent expansion of human activities around Cameroon’s Rumpi Hills Forest Reserve in this Era of Sustainable Development Goals is a call for concern. This study assesses land use and land cover change around the reserve and their potential impact on its sustainability. A total of 250 household surveys were conducted across 13 villages in four selected sites around the reserve in addition to 11 focus group discussions. Landsat 7 ETM (2000) and Landsat 8 OLI (2014) images and topographic maps were utilized to quantify land use and land cover change.
During the 14-year period, dense forest dropped to 90.2% while settlements increased from 744.6 to 2148.8 hectares in 2014. Also, farmlands increased by 18.25% representing a change from 9400.4 to 11117.16 hectares. Over 98% and 85% of the respondents are engaged in the cultivation of food and cash crops and are dependent on the forests for timber and non-timber forests products. Land and tree-based interventions that improve soil fertility should be promoted among smallholder farmers to ensure the sustainability of protected areas in Cameroon. 相似文献
54.
Amaninejad Parisa Hosseinzadeh Sahafi Homayoun Soltani Mehdi Hosseini Shekarabi Seyed Pezhman 《International Aquatic Research》2018,10(3):263-274
International Aquatic Research - This study aimed to assess the effect of 4-nonylphenol (4-NP), a ubiquitous aquatic micro-chemical pollutant substance on some on some reproductive parameters and... 相似文献
55.
The feasibility of rooftop rainwater harvesting(RRWH) as an alternative source of water to meet the outdoor water demand in nine states of the U.S. was evaluated using a system dynamics model developed in Systems Thinking, Experimental Learning Laboratory with Animation. The state of Arizona was selected to evaluate the effects of the selected model parameters on the efficacy of RRWH since among the nine states the arid region of Arizona showed the least potential of meeting the outdoor water demand with rain harvested water. The analyses were conducted on a monthly basis across a 10-year projected period from 2015 to 2024. The results showed that RRWH as a potential source of water was highly sensitive to certain model parameters such as the outdoor water demand, the use of desert landscaping, and the percentage of existing houses with RRWH. A significant difference(as high as 37.5%) in rainwater potential was observed between the projected wet and dry climate conditions in Arizona. The analysis of the dynamics of the storage tanks suggested that a 1.0–2.0 m~3 rainwater barrel, on an average, can store approximately 80% of the monthly rainwater generated from the rooftops in Arizona, even across the high seasonal variation. This interactive model can be used as a quick estimator of the amount of water that could be generated, stored, and utilized through RRWH systems in the U.S. under different climate conditions. The findings of such comprehensive analyses may help regional policymakers, especially in arid regions, to develop a sustainable water management infrastructure. 相似文献
56.
Jahromi Saeid Tamadoni Pourmozaffar Sajjad Rameshi Hossein Gozari Mohsen Nahavandi Reza 《Fisheries Science》2020,86(6):1055-1065
Fisheries Science - Hypo-salinity exposure is a serious concern for bivalve aquaculture, with profound effects on the animals’ physiological condition. The present study aimed to evaluate the... 相似文献
57.
Sajjad Pourmozaffar Saeid Tamadoni Jahromi Hossein Rameshi Mohsen Gozari 《Aquaculture Research》2019,50(11):3435-3443
The present study aimed to evaluate the effect of dietary ACV (apple cider vinegar) and PA (propionic acid) supplementation on some biochemical properties of haemolymph and fibrillar cell (F‐cell) number in the hepatopancreas of shrimp. Five different diets supplemented with 0%, 1%, 2%, 4% ACV and 0.5% PA diets were fed to Litopenaeus vanammei. Some biochemical parameters of haemolymph (cortisol, alkaline phosphatase, albumin, urea, uric acid, creatinine, phosphorus, total hemocyte count) and prevalence of F‐cell in hepatopancreas were examined after 60 days feeding trial. The albumin concentration and total hemocyte count in 2% and 4% ACV and PA groups were significantly higher than those of other groups (p < .05). Moreover, the highest phosphorus concentration was detected in shrimp fed 4% ACV and PA experimental diets (p < .05). No significant differences in haemolymph cortisol, urea, uric acid, creatinine, alkaline phosphatase and tubule area were observed among the experimental groups (p > .05). 2% ACV group showed more F‐cell number in hepatopancreas than other groups while the reduction in F‐cell number was observed in the PA group. Based on these observations, the tested ACV and PA diets remarkably exhibited positive impacts on nutritional value and they may be a potential for adding to shrimp diet. 相似文献
58.
Maqsood Ahmed Muhammad Akbar Anjum Sajjad Hussain Shaghef Ejaz Shakeel Ahmad Sezai Ercisli 《Erwerbs-Obstbau》2017,59(1):19-27
A comprehensive analysis of various horticulturally important morphological traits of sixty pear accessions located in five districts of Azad Jammu and Kashmir (Pakistan) was carried out. Several qualitative and quantitative traits were investigated in situ and after the harvesting of leaf and fruit samples. The rich diversity was observed for qualitative traits (i.?e. growth habit, blooming time, intensity of flowering, fruit setting, ripening time, productivity, and fruit shape and color) among pear accessions. As for the quantitative traits, significant variation was observed for leaf area (8.96–27.17 cm2), flowering duration (11–24 days), fruit weight (68.1–322.3 g), average fruit length (2.68–9.87 cm) and average fruit width (1.82–8.12 cm) between pear accessions. Based on qualitative and quantitative data, two dendograms were constructed by using cluster analysis which separated pear accessions into three distinct groups. The cluster analysis showed considerable differences between the accessions for qualitative and quantitative traits. Furthermore, a close association between accessions was noted inside the clusters for qualitative and quantitative traits. The results showed rich diversity and similarity between the pear accessions and needs further assessment at molecular level to elucidate their phylogenetic relationship. 相似文献
59.
Syed Bilal Hussain Muhammad Akbar Anjum Sajjad Hussain Shaghef Ejaz Maqsood Ahmed 《Erwerbs-Obstbau》2017,59(4):315-324
Sweet oranges are produced on large scale all over the world and demanded due to less number of seeds and are better juice quality. A study was carried out with the objective to characterize promising sweet orange cultivars for better quality fruits production under different agro-climatic conditions of Punjab (Pakistan). Fruits of three promising sweet orange (Citrus sinensis L. Osbeck) cultivars viz. ‘Blood Red’, ‘Musambi’ and were harvested from commercial citrus groves at five different locations. Starting from Multan, in the direction of increasing altitude, four more sites viz. Sahiwal, Faisalabad, Sargodha and Chakwal were selected after every 100–150?km distance. Fruits were evaluated in terms of different physical and biochemical characters. Results showed significant influence of climatic conditions on physico-chemical properties of the cultivars at all the locations. Fruits harvested from Multan and Sahiwal showed higher fruit weight, diameter and peel weight. More juicy fruits with higher vitamin C content were produced under mild temperature environmental conditions of Chakwal. Overall, ‘Musambi’ fruits had more total soluble solids and reducing and total sugars. ‘Musambi’ was found to be good source of bioactive compounds i.?e. vitamin C and total phenolic content, had the maximum antioxidant activity as compared to ‘Blood Red’ and ‘Succari’ and may be explored as potential cultivar in Sargodha and Chakwal. 相似文献
60.
Monfared Banafsheh Beheshti Noormohamadi Ghorban Rad Amir Hossein Shirani Hervan Eslam Majidi 《Journal of Crop Science and Biotechnology》2020,23(1):65-71
Journal of Crop Science and Biotechnology - Changes in the environment that are associated with different sowing dates can be expected to alter canola (Brassica napus L.) growth and development.... 相似文献