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Articles by T.K. Bhattacharya
Total Records ( 2 ) for T.K. Bhattacharya
  R.N. Chatterjee , R.P. Sharma , A. Mishra , M. Dange and T.K. Bhattacharya
  The present study was conducted on six crossbred chicken populations of White Leghorn to estimate variability of microsatellites and their association with egg production traits. Five microsatellite markers located on chromosome 1, 2, 5 and 30 were explored and the association study was performed employing least square-maximum likelihood method. All the microsatellites were found to be polymorphic showing three to six alleles in the population. Genotype and allelic frequency was estimated showing a large variability in different microsatellites. The association study of microsatellite variability with egg production traits showed that only ADL023 microsatellite was significantly associated with egg production upto 64 and 72 weeks and egg weight at 28 weeks of age. Genotype 11, 12, 13 and 23 produced more number of eggs at 64 and 72 weeks of age than the genotype 22. Egg weight was higher in genotype 12, 13 and 23 and lower with genotype 11 and 22.
  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.
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