Journal of Advances in Biology & Biotechnology

The present study has been undertaken to evaluate comparative production efficiency of improved chicken varieties viz, CARI - Nirbheek and Vanaraja birds in compare with local bird to see the comparative performance of CARI- Nirbheek bird with exhisting improved Vanaraja birds in body weight gain and in egg production and also with native birds avail in the district. The improved variety of CARI- Nirbheek had significantly lower body weight compae to exhisting improved breed of Vanaraja bird but significantly higher body weight gain than native bird. The total of 300 nos of birds comprising 100 each nos of CARI Nirbheek,Vanaraja and Native birds were distributed to five farm women providing 60 each birds of one month old each of different breeds of twenty nos each per farmer.The body weight of all the birds at 4,8,12,16,20 , 24,32 and 40  th week were recorded , The initial body weight at 4 week of the three breeds was found to be  as324.32± 3.78, 438.89±4.83 and 210.34±2.97 whereas final body weight was recorded as 2278.50±30.67, 3182.50± 30.24  and  1698±28.21respectively in CARI –Nirbheek,Vanaraja and Native birds,The  age of first laying was no significant differences among the three breeds of poultry birds under scavenging system as 165± 9.11, 169.00± 8.59 and 178.6± 9.19 though egg size was biggest in Vanaraja bird as 60g and lowest size in native bird as 42 g respectively.Overall performance in body weight gain was observed in Vanaraja bird as compare to CARI -Nirbheek and Native birds,The backyard poultry farming with improved birtds provide a solution to food security to the rural farmers for sustainable livestock production in India.