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Articles by S. Harimurti
Total Records ( 4 ) for S. Harimurti
  B. Ariyadi , J.H.P. Sidadolog , S. Harimurti , S. Sudaryati and Wihandoyo
  This study was conducted to analyze the relationship between the condition of non-feather distributions and its genetically traits as a multiple allele of the feather condition in the Indonesian indigenous naked neck chickens. Eight males Indonesian naked neck chickens were paired with the five females that had the different condition of non-feathers distribution, namely non-feathers on the neck only (30%); non-feathers on the crop and breast (60%) and non-feathers on the neck, crop, breast and the back of body (90%). Assuming that the non-feathers distribution was caused by a multiple alleles of Na gene and developing of distribution were caused by Na+ as a multiple alleles of Na gene. This study revealed the effect of multiple allele Na+ on the distribution of non-feather areas in the chicken bodies. Analysis of inheritance was conducted by Mendelian heredity with chi-square (X2) analysis. The results, in the Indonesian naked neck chicken, showed that the distribution of non-feathers areas from the neck to the back of body might be caused by genetic of Na+Na+ and Na+Na. The non-feather distribution areas in the crop, breast and the thigh might be genetics effect of Na+na and NaNa (90%). The non-feather distribution areas in the neck or in the crops might be genetics effect of Nana. The normal feathers of chicken might be effect of recessive gene of nana. Moreover, the study showed that the Indonesian naked neck chicken had a lower productivity, higher embryonic mortality and lower hatchability.
  P. Astuti , B. Al Fajar , M. Mauludin , A. Hana , C. Mona Airin , S. Sarmin and S. Harimurti
  Light intensity affects the growth rate of chickens. Previous research reported that blue light with a wavelength of 460 nm can increase the growth rate of chickens compared to green and red light. No reports have investigated whether the effects of 460-nm blue light remain even when the change in lighting is intermittent. This study therefore aimed to obtain more information about the effects of exposing chickens to 460-nm blue light with differing intensity levels. This study used roughly 2700 one-day-old Lohmann chickens raised at Wonokerto, Turi, in the Sleman District of Jogjakarta. The chickens were divided into 3 groups: a group without artificial lighting (the control), a group with intermittent blue lighting (with 12 h under monochromatic blue light) and a group with continuous monochromatic blue lighting. Blood samples were taken on days 1, 7, 14, 21 and 28. Then, the blood samples were separated into their plasma and serum components. The plasma was used to determine the numbers of heterophils and lymphocytes, while the serum was frozen to detect corticosterone levels using an enzyme-linked immunosorbent assay (ELISA). The results showed that exposure to the 460-nm wavelength blue light increased the body weights of chickens as measured at the 4th and 5th weeks. This increase started during the 3rd week (p<0.05). Neither intermittent nor continuous blue lighting affected corticosterone levels (p>0.05) except on day 14 (p<0.05). For the H/L ratio, blue lighting did not affect the 3 groups, except on day 7. In general, it can be concluded that blue lighting that is 460 nm in wavelength can be used in broiler chicken farms because it increases the body weights of chickens but does not increase their corticosterone or H/L ratios, both of which serve as indicators of stress.
  B. Ariyadi , J.H.P. Sidadolog , S. Harimurti , S. Sudaryati , Wihandoyo and H. Sasongko
  Background: The cecum of the chicken gut may be susceptible to pathogens because it is readily colonized by microbes. The lower segment of the gut is also the primary tissue that permits the invasion of microorganisms from the external environment and the cloaca. Mucins, which are composed of glycoproteins, play significant roles in forming the barrier against infection on the mucosal surface. Objective: The aim of this study was to determine the differences in the mucosal barrier of the lower segment of the gut between Indonesian naked neck chickens and normal feathered chickens. Methodology: The lower segments of the gut (rectum, colon and cecal tonsil) of Indonesian indigenous naked neck chickens and normal chickens were collected. The expression of the mucin 2 gene in the gut mucosa was analyzed by reverse-transcription-polymerase chain reaction (RT-PCR). The localization and molecular sizes of the mucosal glycoproteins were analyzed by Western blot. Wheat Germ Agglutinin (WGA) and jacalin lectins were used for Western blot analysis. Results: The mucin 2 gene was expressed in the mucosal gut of the rectum, colon and cecal tonsil in both naked neck chickens and normal chickens. Western blot analysis showed a single band for both WGA and jacalin from the mucosal gut of the rectum, colon and cecal tonsil in both naked neck chickens and normal chickens. Conclusion: These results suggest that the mucin 2 gene and glycoproteins containing WGA and jacalin positive sugars cover the surface of mucosal gut in both naked neck chickens and normal chickens, most likely to form a mucosa barrier.
  S. Harimurti , A.U. Rahmah , A.A. Omar and T. Murugesan
  Methyldiethanolamine (MDEA) solution is frequently used for the removal of acidic gases from raw natural gas. During maintaining, cleaning and scheduled inspection of absorption and desorption column of sweetening gas plant, a high concentration MDEA generated in the wastewater. This wastewater is toxic to bacteria and usually can not be treated using conventional biological treatment. Popular technique called Advanced Oxidation Processes (AOP’s) such as UV/H2O2, Fenton’s treatment and UV/Ozone has been used to treat the high concentration of organic contaminant in the wastewater. This study involves the UV/H2O2 advanced oxidation process to treat wastewater containing MDEA. Response Surface Method (RSM) was used to optimize the factor condition on MDEA degradation process. Approximately 85% of Total Organic Carbon (TOC) was removed. The biodegradability of partially degraded MDEA after UV/H2O2 was determined by calculating of the BOD5/COD ratio. The ratio increased after UV/H2O2 process.
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