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Articles by U. Rajkumar
Total Records ( 2 ) for U. Rajkumar
  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.
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