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Articles by Yang Yan
Total Records ( 4 ) for Yang Yan
  Dafaalla M. Mekki , Bian Liang-yong , Wang Jin-yu , Yang Yan , Li lin-chuan , Yu Yabo and Hassan H. Musa
  Semi-quantitative polymerase chain reaction (RT-PCR) was applied to quantify and compare variations in avian E2A expression level between two Chinese indigenous duck breeds for different tissues. Six primer combinations in addition to β-actin as an internal control were used. The expression level of E2A was significantly higher (p< 0.05) in kidney tissues than lung tissues for both Gao you and Kun shan indigenous duck breeds. The variability of gene expression between two breeds showed 34.35% and 60.70% higher expression in Gao you breed than Kun shan breed for kidney and lung tissues, respectively. Differences were found to be significant (p< 0.05) only for expression level in lung tissues. No significant effect of sex upon E2A expression was detected.
  Dafaalla M. Mekki , Bian Liang-yong , Wang Jin-yu , Yang Yan , Yu Yabo and Hassan H. Musa
  Semi-quantitative polymerase chain reaction (RT-PCR) was applied to quantify and compare variations in avian E2A expression level between two Chinese indigenous duck breeds for different tissues. Six primer combinations in addition to beta-actin as an internal control were used. The expression level of E2A was significantly (p< 0.05) higher in kidney tissues than lung tissues for both Gao you and Kun shan indigenous duck breeds. The variability of gene expression between two breeds showed 34.35% and 60.70% higher expression in Gao you breed than Kun shan breed for kidney and lung tissues, respectively. Differences were found to be significant (p< 0.05) only for expression level in lung tissues. No significant effect of sex upon E2A expression was detected. The association between E2A relative expression level and body weight was found to be positive and moderate for the genetically lean breed (Gao you), while it was negative and has low values for genetically heavy breed (Kun shan).
  Wang Jin-yu , Bian Liang-yong , Yang Yan , Li lin-Chuan , H. Hassan Musa and M. Dafalla Mekki
  Semi-Quantitative Polymerase Chain Reaction (RT-PCR) was applied to quantify and compare variations in avian TCF3 expression level between two Chinese indigenous chicken breeds for different tissues. Six primer combinations in addition to -actin as an internal control were used. The expression level of TCF3 was greater in Jinghai breed than Suqin breed for different tissues. The variability of gene expression between two breeds showed 18.55, 37.85 and 66.15% higher expression in Jinghai breed than Suqin breed for kidney, lung and spleen tissues, respectively. Differences were found to be significant (p<0.05) only for expression level in lung and spleen tissues. Significant effect of sex upon TCF3 expression was detected for both breeds.
  Lv Shen-Jin , Yang Lin , Liu Yu-Qing , Yang Yan , Chen Guo-Hong and Wei Wan-Hong
  Although several researchers have reported the significant effect of visitors on captive-housed primates, comparatively little research has been done on the behaviorual responses of some wild ungulates animals. To date, the effect of human audience on the welfare of captive fallow deer (Dama dama) has been overlooked. This study thus examined the behavior of 7 zoo-housed fallow deer during periods of both high and low visitor density with the aim of exploring whether there was any effect of visitorsí density on the animalsí well-being. Observational data on various behaviours were obtained through focal animal sampling. These data were analyzed using Paired-samples T-test to estimate the effect of visitor density on fallow deer. The results of analysis indicated that high visitor density encouraged behaviour of relation, with fallow deer spending a significantly more watching and auto-grooming behaviour. By contrast, low visitor density encouraged significantly more foraging and rest. The findings demonstrate that fallow deer, like many other species of captive animals, are disturbed by high number of visitors. In conclusion, visitor density had a significant effect on the behaviour of fallow deer in China park.
 
 
 
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