The Differences in Egg Quality of White Leghorn and Naked Neck Chicken

Abstract

Evaluation of egg quality characteristics and influencing factors are very important to note. One of the factors that affect the quality of the egg is the breed of chicken. The research objective was to compare some parameters of egg quality between White Leghorn (WL) and Naked Neck chicken. Number of eggs collected were 49 eggs from WL and 59 eggs from Naked Neck. All variable egg quality was measured using an egg multi tester EMT-5200. For egg white grading, it was used the standards of the USDA (grade AA, A, and B). The average of egg weight was significantly (P<0.05) influenced by the breeds. Thickness of eggshell were significantly different (P<0.05) between WL and Naked Neck chicken (0.46±0.05 vs 0.43±0.04 mm). Haugh units (HU) were significantly higher in WL (67.64±9.97) compared with Naked Neck chicken (57.62±11.69). The percentage of the characteristics of the egg white on a WL chicken more on grade A (47.68%) while the Naked Neck chicken on grade B (59.18%). More yolk color WL chicken on score 4 (52.54%) and Naked Neck chicken on score 5 (48.98%). It can be concluded that, egg weight, eggshell thickness, HU, and the percentage of egg white on WL chicken showed superior than Naked Neck chicken.

Analysis of Serum Biochemical Indexes, Egg Quality, and Liver Transcriptome in Laying Hens Fed Diets Supplemented with Gynostemma pentaphyllum Powder

“…At 29 weeks of age, 20 fresh eggs were randomly selected from each group (4 eggs from each replicate subgroup). The Haugh unit (HU), egg yolk proportion (EYP), and eggshell thickness (EST) were calculated, and the egg yolk color (EYC), egg shape index (ESI), and egg weight (EW) were measured (Robotmation Egg Analyzer, EMT-5200, Tokyo, Japan; vernier caliper, Airuize, CJW888, Shandong, China; and Roche colorimetric fan, Roche, robotmation, Basel, Switzerland) [ 25 ]. Meanwhile, 15 eggs were randomly chosen from each group, and the cholesterol concentration in the egg yolk was determined using an ELISA kit (MEIMIAN, Jiangsu, China) [ 26 ].…”