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Articles by M. Niranjan
Total Records ( 4 ) for M. Niranjan
  R.N. Chatterjee , R.P. Sharma , B.L.N. Reddy , M. Niranjan , Shivaprasad and S.K. Mishra
  The data of G-5 generation of inbred and non-inbred populations of Dahlem Red were utilized in the present study. These populations were originally developed by a regular system of full sib and half sib mating for 5 successive generations. A random mated non-inbred population was also maintained. Consequently, 3 sub populations have been developed from the same base population, namely, a full sib mated group (FS), a half sib mated group (HS) and a non-inbred group (NB). The inbreeding coefficient in the G-5 generation in the FS group and HS groups was 67.2% and 44.9%, respectively. These three sub populations were subjected to PCR-RAPD analysis to observe the genetic distance and similarity between different subpopulations. A total of 41 random primers (decamers) were screened for RAPD analysis, out of which 21 primers amplified the genomic DNA, generated 128 to 4544 bp bands. The Mean Average Percentage Difference (MAPD) varied between 13.22 and 22.20. The MAPD was highest between FS and NB and lowest between HS and FS. The intra-population genetic similarity was highest in FS (0.7139) followed by HS (0.7095) and NB (0.7054) which indicated that FS subpopulation is most uniform. The FS and NB had maximum genetic distance (by both band sharing and band frequency) and FS and HS had lowest genetic distance. The immune response to SRBC was highest in NB group followed by FS and HS groups.
  M. Niranjan , R.P. Sharma , U. Rajkumar , B.L.N. Reddy , R.N. Chatterjee and T.K. Battacharya
  The growth and production performance of 4 chicken varieties developed for backyard farming were evaluated in the present study. The body weights were significantly (p<0.05) varied in 4 chicken varieties. The body weights were significantly higher in C1 and Vanaraja and lower in Gramapriya. The C2 and C1 crosses matured early at the age of 145.72±1.11 and 154.67±0.81 days, respectively. The egg weights were significantly (p<0.05) higher in C1 cross throughout the laying period. The egg weights ranged from 57.06±0.27 g (Vanaraja) to 58.58±0.29 g (C1 cross) and 60.07±0.28 g (Vanaraja) to 61.34±0.35 g (C1 cross) at 40 and 64 weeks of age, respectively. The egg production in C1 cross was significantly (p<0.05) better than Vanaraja and C2 cross at all ages, however the egg production was on par with Gramapriya at 64 and 72 weeks of age. C1 cross has substantial production capabilities as dual purpose bird suitable for rural and backyard farming in the country.
  U. Rajkumar , R.P. Sharma , K.S. Rajaravindra , M. Niranjan , B.L.N. Reddy , T.K. Bhattacharya and R.N. Chatterjee
  A comprehensive study was undertaken to evaluate the egg quality traits in three naked neck genotypes, NaNa (homozygous), Nana (heterozygous) and nana (normal) by utilizing 556 eggs collected at 28, 32, 36 and 40 weeks of age. The overall mean egg weight, shape index and Haugh unit values were 56.41 g, 75.79 and 75.98, respectively. The yolk index, yolk height and yolk colour varied significantly (p<0.01) in three genotypes. All other external and internal egg quality traits were not differed significantly among the genotypes; however Naked neck had better egg quality in almost all the traits. Age had significant (p<0.01) effect on all the traits studied in Naked neck chicken. Haugh unit score was better in 28 week age group. The egg, yolk, albumin and shell weights were positively correlated with the age. The average shell weight and thickness values were 5.07 g and 0.401 mm, respectively, which had no significant variation among the genotypes. The Na gene had marginal effect on all the egg quality traits studied. The better egg quality parameters in naked neck chicken are desirable which indicate the better keeping quality of the eggs and withstand the handling damages.
  M. Niranjan , H.S. Nagaraja , B.K. Anupama , N. Bhagyalakshmi , R. Bhat and A. Prabha
  The aim of the study was to evaluate if prolonged supervised integrated exercise in male hypertensive patients reverses the deterioration of heart rate variability. Sixty six male hypertensive patients were divided into exercise (n = 30) and non-exercise groups (n = 36). Exercise group patients underwent a supervised integrated exercise program for one-year. Time domain analysis of heart rate variability was performed from electrocardiogram during deep breathing. Heart rate variability decreased significantly (p<0.001) in hypertensive patients. HRV increased significantly after six months (p<0.001) and 12 months (p<0.01) of integrated exercise training. There was a significant decrease in blood pressure (p<0.001) in exercised hypertensive patients after 12 months compared to non-exercised group. Heart rate variability was significantly decreased (p<0.001) than normotensives after one-year in the non-exercised hypertensive patients. Long term supervised integrated exercise increased deep breathing heart rate variability and decreased blood pressure in the hypertensive patients. This suggested that integrated exercise program was able to reverse the autonomic dysregulation seen in hypertensive patients.
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