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- W2392332194 abstract "This experiment aims to study the effect of different melatonin levels on the tissue structure of chickens' lymphoid organs under different lighting conditions.Through controlling lighting hours,30-days old chickens were divided into three groups to be raised separately: 6h group,12h group(control group)and 18h group with 15 chickens in each.After three weeks of lighting control,10chikens randomly selected from each group were dissected and the samples of thymus,bursas and spleen were collected and put in the 10 percent of formaldehyde liquid.Then the samples were cut into slices in the regular way,dyed with HE,observed and photographed under the microscope,and finally stage micrometer scale was used to measure thymic corpuscle diameter,bursa of fabricius nodule area and splenic corpuscle diameter.The result indicated that with the lighting time increasing,thymic corpuscle diameter,bursa of fabricius nodule area and splenic corpuscle diameter index were decreased accordingly due to the inhibited secretion of melatonin.The observation under the microscope showed that the diameter and number of thymic corpuscle in 6h lighting group increased and the lymphocytes become denser;the bursa of fabricius nodule area enlarge and lymphocytes were in denser arrangement;the diameter of the splenic corpuscle increased,the germinal center of splenic corpuscle become obvious,and the periarterial lymphatic sheaths thickened.Through processing date with EXCELL software,SPSS software analysis showed that thymic corpuscle diameter,bursa of fabricius nodule area,splenic corpuscle diameter index were significantly different(p0.05 or P0.01) compared with the control group.The results showed that different levels of melatonin have significant effect on the tissue structure of chickens' lymphoid organs under different lighting conditions,and thus the body's immune system will be affected." @default.
- W2392332194 created "2016-06-24" @default.
- W2392332194 creator A5078795756 @default.
- W2392332194 date "2008-01-01" @default.
- W2392332194 modified "2023-09-25" @default.
- W2392332194 title "EFFECT OF MELATONIN ON THE TISSUE STRUCTURE OF CHICKEN'S LYMPHOID ORGANS UNDER DIFFERENT LIGHTING CONDITIONS" @default.
- W2392332194 hasPublicationYear "2008" @default.
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