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Copyright of Smart Rail Transit is the property of Smart Rail Transit Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Ecology & Rural Environment is the property of Journal of Ecology & Rural Environment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This experiment was conducted to investigate the effects of Antrodia cinnamomea culture on performance, egg quality and serum antioxidant indexes of laying hens in late peak period. A total of 288 Hyline white laying hens (400 days of age) with similar body condition and laying performance in the late peak period of laying were randomly divided into four groups: control group and low, medium and high dose groups. Laying hens in control group were fed a basal diet, and laying hens in low, medium and high dose groups were fed the basal diet supplemented with 50 mg/kg, 100 mg/kg and 200 mg/kg Antrodia cinnamomea culture, respectively. The pre-test lasted for seven days and the experiment lasted for 28 days. The results showed as follows: compared with the control group, the laying rate, daily feed intake and daily egg weight in the Antrodia cinnamomea culture group were slightly increased, and the ratio of feed to egg in the 50 mg/kg and 100 mg/kg Antrodia cinnamomea culture groups were slightly lower than that in the control group, but the difference was not significant (P>0.05); Antrodia cinnamomea culture had no significant effect on egg quality. The proportion of dark red liver in 200 mg/kg Antrodia cinnamomea culture group was 83.33% with the increase of Antrodia cinnamomea culture dosage. With the increase of Antrodia cinnamomea culture, the pathological changes of liver tissue slices of laying hens could be reduced or disappeared; the superoxide dismutase (SOD) content of 200 mg/kg Antrodia cinnamomea culture group was significantly higher than that of 50 mg/kg group and control group (P<0.05), but the contents of malondialdehyde (MDA) and glutathione peroxidase (GSH-Px) were not significantly different among all groups (P>0.05). When 50 g and 100 g Antrodia cinnamomea culture were added to the diet per ton, 72 laying hens fed for 28 days could gain an additional profit of 34.4 yuan and 58.4 yuan, respectively. In conclusion, Antrodia cinnamomea culture can improve the production performance of laying hens in the late peak period, reduce the incidence of fatty liver of laying hens, improve serum antioxidant indexes, and increase the breeding income of farmers, among which the 100 mg/kg group of Antrodia cinnamomea has the best profit. [ABSTRACT FROM AUTHOR]

Copyright of China Population Resources & Environment is the property of Shandong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To explore the spatial effect and scale characteristics of the land ecological system within the scope of the city, this paper constructs a scientific evaluation system of land ecosystem based on PSR model. The basic unit of the evaluation system is 1 km×1 km grid. Entropy method is used to calculate the regional land ecological security index. We assess the land ecological security index in Yinchuan city, and the results show that the regional land ecological index is 0.488 2 in 2015. The land ecological security has dual characteristics which includes structure function differentiation and spatial heterogeneity. From the macro perspective, the gaps among the three central districts are very small, while the difference between the two suburban counties is very large. Only the ecological security value of Helan County (0.557 7) is higher than the overall average in the city. From the micro perspective, there is a certain relationship between land ecological security and the way people use the land. At the micro level, the composite index in the north and center of the city was higher, while it is lower at the fringe of the city. From the view of land use function, the core composite indexes of agricultural areas, urban built- up areas, wetlands and nature reserves are higher, while the index in cross-functional areas is very low. There is coupling relationship between the land ecological security and the land use pattern. The important factors of land ecological security in Yinchuan include per capita arable land area, industrial structure and pollution control efforts, etc. By ESDA spatial analysis, the global Moran’s I of land ecological security in Yinchuan city is 0.780 4, which means inherent spatial correlation of ecological security. The land ecological security in Yinchuan city as a whole has characteristics of spatial continuity and spatial dependence. Therefore, we should make full use of the spatial diffusion and spillover benefits in high- high aggregation area, and improve the restriction factors in low- low aggregation area, so as to reduce the environmental risk and optimize the allocation of space. [ABSTRACT FROM AUTHOR]