Physical quality of eggs of four strains of poultry

Abstract

The layer poultry is an important activity for food production with high biological value. Measuring egg quality has great relevance to ensure safety and quality products for consumers. Thus, the objective was to evaluate the egg physical quality of four laying hen’s strains. Were used 864 eggs from four laying hens’ lines (Hisex Brown®, Hy-Line Brown®, Isa Label®, and Lohmann Brown®). The experimental design was completely randomized composed of four treatments (strains) with nine replications with four eggs each. Egg weight, egg diameter, egg length, specific gravity, yolk, albumen and shell weight and percentage, Haugh units, and shell thickness were evaluated. There was a significant difference for all parameters evaluated. The Hisex Brown® strain showed the best results for egg diameter, egg length, specific weight, albumen height, Haugh units, yolk weight, albumen%, shell weight, shell%, and shell thickness, while the Hy-Line Brown® produced bigger and heavier eggs, and Isa Label® presented the highest yolk%. The Hisex Brown® strain showed the better physical quality of eggs when compared to the other studied lines, the strain being indicated when the objective is to produce eggs with better internal and external quality.

Fertility, Hatchability and Prediction of Egg Weight from Egg Quality Indices of Nigerian Helmeted Guinea Fowls and the French Strain

“…The shell thickness was taken as the average of the thicknesses of blunt, middle and sharp points of the egg and was measured using a micrometer gauge [12]. Shell weight, after drying at room temperature for one day [24], was determined using a sensitive balance with ±0.01 g accuracy [25]. Egg shell index was obtained from the ratio of shell weight to egg weight multiplied by 100 [26].…”

Genetic Analysis of Egg Production Traits in Luhua Chickens: Insights from a Multi-Trait Animal Model and a Genome-Wide Association Study

“…EN provides insight into individual egg production within a specific timeframe and can aid in the selection of hens with higher laying performance [ 1 ]. EW holds significance for both egg producers and consumers [ 2 ]. Previous studies have indicated that EN is influenced by factors such as age at first egg (AFE) and correlates with body weight (BW) [ 3 , 4 ].…”