Performance of naked neck and their normal sibs in two broiler populations

B.P. Singh, B. Singh, U.B. Singh, M. Rana and K.P. Singh
Central Avian Research Institute
Izatnagar- 243 122

The performance of naked neck birds (Nana + NaNa) and their normal half sibs in NNWP and NNCP was evaluated in 8 th selected generation during summer season. The average 6 weeks body weight of male, female and combined sex in NNWP population was 1400, 1143 and 1272 g in naked neck genotypes and 1390, 1130 and 1260 g in normal progeny. The corresponding performance in male, female and combined sex in NNCP line was 1390, 1124 and 1257 g in naked neck progeny and 1380, 1100 and 1240 g in normal progeny. Relative superiority of naked neck genotypes over normal birds was evident for juvenile body weights measured at 3, 5 and 6 weeks of age in both the lines. The feather percentage of 6 weeks body was significantly less in naked neck birds as compared to normal sibs. The naked neck birds also showed better feed efficiency, dressing percentage and less abdominal fat. It was concluded that the naked neck birds had better regulation of body temperature and considerable higher radiation from the neck region.

Source : IPSACON-2005

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