Evaluation of Egg Quality Traits and Nutrient Profile of Naked Neck, Rhode Island Red, Black Australorp, and their Crosses

Abstract

An egg is one of the most versatile and balance foods available for human consumption, being rich in protein, fats, vitamins, and minerals. The study aimed to evaluate the genetic group (Rhode Island Red (RIR), Naked Neck (NN), Black Australorp (BA) and their crosses (RIR*NN and BAL*NN)) effects on the external and internal quality parameters of egg. A total of 75 layers were randomly distributed into five groups (15 birds from each genetic group). Each group was further sub-divided into three replicates (5 birds per replicate) in a randomized complete block arrangement. Birds of each replicate group was reared in a separate cage (10’ L × 8’ W × 4’ H) placed in the same shed. The experiment was continued for four weeks. All birds were fed on a standard commercial layer diet and clean drinking was provided all the time. Data on egg geometry, shape index, egg external, internal quality, and proximate composition was recorded. The results revealed that the egg geometrical parameters of BAL and RIR were improved (P < 0.05). Notably, egg length of BAL was higher (p < 0.05), while egg breadth, egg volume, and egg surface area was higher for BAL and RIR. Likewise, egg shape index was higher (p < 0.05) for BAL and RIR. Also, the egg weight, egg surface area, was higher (p < 0.05) and eggshell weight was lower for BAL and RIR. Moreover, yolk weight and yolk diameter was higher (p < 0.05) for BAL and RIR. However, the egg proximate composition did not alter (p > 0.05). The egg geometrical parameters, egg shape index and egg quality (external and internal) were significantly improved in BAL and RIR without interfering the nutrient composition of the egg.