@article{Rabeya:208430,
      recid = {208430},
      author = {Rabeya, T. and Bhuiyan, A.K.F.H and Habib, M.A and  Hossain, M.S},
      title = {Phenotypic and genetic parameters for growth traits in Red  Chittagong Cattle of Bangladesh},
      journal = {Journal of the Bangladesh Agricultural University},
      address = {2009},
      number = {452-2016-35803},
      pages = {7},
      year = {2009},
      abstract = {The present study was carried out to estimate phenotypic  and genetic parameters of Red Chittagong Cattle (RCC) for  growth traits. Means of birth weight (BW), three month  weight (3MW), six month weight (6MW), weaning weight (WW),  nine month weight (9MW) and yearling weight (YW) were  15.74, 31.48, 45.33, 57.00, 60.91 and 76.18 kg  respectively. Sex significantly (p&lt;0.001) differed BW of  calves but did not differ (p&gt;0.05) 3MW, 6MW, WW, 9MW and  YW. BW, 6MW, WW, 9MW and YW did not vary significantly  (p&gt;0.05) on year of birth but varied significantly (p&lt;0.01)  on 3MW. Season of birth had significant difference on 3MW  (p&lt;0.001), 6MW (p&lt;0.01) and WW (p&lt;0.01) but had no  significant difference (p&gt;0.05) on BW, 9MW and YW. The  growth rates at zero to six month (6MGR) and six to twelve  month (12MGR) were 0.17 and 0.17 kg /d respectively. Growth  rate in both stages had no significant effect (p&gt;0.05) on  sex and year of birth. 6MGR had no significant effect  (p&gt;0.05) on season of birth but had significant (p&lt;0.05)  effect on 12MGR. From single trait analyses heritability  (h2) of BW, 3MW, 6MW, WW, 9MW, YW, 6MGR and 12MGR were  0.497, 0.468, 0.475, 0.467, 0.447, 0.478, 0.499 and 0.65,  respectively, whereas from multi-trait analysis  heritability (h2) of first four traits were 0.498, 0.456,  0.500 and 0.490, respectively. Genetic correlations of BW  with 3MW, 6MW and WW were 0.23, 0.38, and 0.53,  respectively, 3MW with 6MW and WW were 0.78 and 0.69,  respectively and 6MW with WW was 0.76. Estimated  heritability values were rather high in magnitude and  indicate that these traits would likely respond to  selection. Estimates of phenotypic correlations among the  traits studied were very low to moderate with values  ranging from -0.40 to 0.81, whereas magnitude of genetic  correlation ranged from 0.23 to 0.78. It was concluded that  these estimated parameters would help to understand the  biology of the traits and in designing breeding programme  for other indigenous cattle in general.},
      url = {http://ageconsearch.umn.edu/record/208430},
      doi = {https://doi.org/10.22004/ag.econ.208430},
}