author(s)
Basant Kumar, Hemant Kumar and Sant Kumar Singh

abstract
Present study was carried out on four chicken varieties i.e. Delham Red (DR), Red Cornish (RC) one Vanaraja (VR) and Gramapriya (GP) to assess the effect of genetic groups on equality traits. A total of 87 eggs were collected from the above four genetic groups at 20 weeks of age to study the various external, internal and derived egg equality traits. The external characters like egg weight, length and width were measured. Thereafter, the egg was broken and the internal traits like weight, height and width of albumin and yolk, shell weight and their thickness were recorded using standard procedure. The derived traits egg Haugh unit, shape index, albumin index and yolk index were estimated for study. Least square analysis of variance showed significant effect genetic group on all the traits (external, internal and derived traits) under study except on shell weight and shape index. Significantly higher external egg traits were recorded in DR followed by RC, VR and GP. Exactly similar trend was noticed with albumin weight. However, there was no any definite trend with respect to other internal and derived traits. Overall egg weight, egg length and egg width were found to be 53.77±0.273 g, 5.56±0.02 cm and 4.15±0.008 cm, respectively.