Explore all the information on
Poultry egg quality
Egg quality defines those characteristics of an egg that affect consumer acceptability and preference. Components of quality include shell quality and interior egg quality for shell eggs, and interior egg quality for further processed eggs. The quality of the egg once it is laid cannot be improved. Hence, its maintenance is mostly a preventive process. Egg quality is influenced by several factors including rearing, temperature, humidity, handling, storage, and egg age. Shell quality: There are five major classes of shell defects: integrity, texture, shape, color, and cleanliness. Internal egg quality involves functional, aesthetic and microbiological properties of the egg yolk and albumen. The proportions of components for fresh egg are 32% yolk, 58% albumen and 10% shell. Regarding exterior egg quality, the shell of each egg should be smooth, clean and free of cracks. The eggs should be uniform in colour, size and shape.
Extensive research has investigated the effects of production systems on egg quality; however, confounding problems exist with many of the experimental designs (Chung and Lee, 2014). Insufficient consideration is given to the influence of genotype, hen age, ambient temperature and stress on egg quality. Eliminating the ambiguity created by these effects is crucial when evaluating the effect of production system on egg quality. The present study aims to identify limits to the hen age, so that...
Comments : 0
Recommendations: 0
I. INTRODUCTION In Australia, the National Animal Welfare Research Development and Extension (RD&E) Strategy is a cross-sectoral strategy under the National Agricultural RD&E Framework. Each of the livestock industries in Australia, including the egg industry, is represented by this National Strategy, which is active in identifying the key areas of importance for the welfare of livestock. Over the last four to five years, in particular, this National Strategy has consistently...
Comments : 0
Recommendations: 0
Our Partners:
A recent study suggests that artificial Ascardia galli infection has no effect on performance and egg quality of free-range laying hens from the point of lay until 40 weeks of age (Sharma et al., 2017). However, the lower hepatic lipid reserve of infected hens observed in the same study indicated the potential for A. galli to affect production at a later stage. In this study, serum and yolk antibody levels of A. galli were measured to investigate the immune response to natural infection in...
Comments : 0
Recommendations: 0
INTRODUCTION Feed particle size is an often-overlooked aspect of poultry production. Producers should not assume that feed is of a uniform size and homogeneously mixed, or that the feed mill is providing the ideal mix of particles in a ration. Feed particles range in size from very fine to coarse, and different grinding methods will result in different particle size distributions. Differences in particle size within a ration can affect both the digestive system and the...
Comments : 0
Recommendations: 0
Naturally brooded domestic chicks spend a large proportion of time resting under and gaining warmth from their mother, spending multiple short bouts in relative darkness (Shimmura et al., 2010). In contrast, during rearing, commercial chicks experience one continuous light period each day. In this situation, behaviours become unsynchronised, with the potential for active chicks to disturb and direct feather pecks towards resting conspecifics (Riber et al., 2007; Gilani et al., 2012)....
Comments : 0
Recommendations: 0
I. INTRODUCTION Egg-associated Salmonella infection is a significant international public health problem. Internal contamination of eggs with S. Enteritidis has been the principal concern in North America and Europe, whereas external contamination with S. Typhimurium has been the predominant issue in Australia. Some strategies for controlling egg-borne Salmonella are designed to act with precision against epidemiologically important serovars, but others are applicable...
Comments : 0
Recommendations: 0
.jpg&w=3840&q=75)
I. INTRODUCTION With the current genetic focus being on longer laying cycles, there is a need to look for new ways of improving calcium metabolism in laying birds which are prone to osteoporosis in the latter stages of lay (Bain et al, 2016). Calcium pidolate (a highly soluble, absorbable salt with excellent gastrointestinal tolerance) has been around for 10-15 years in the commercial sector of the egg industry. Existing evidence suggests that this supplement has beneficial effects...
Comments : 0
Recommendations: 0
I. INTRODUCTION Spotty Liver Disease (SLD) is characterized by the occurrence of multiple grey/white spots in the liver. It causes mortalities and reduction in egg output and is prevalent within the layer industry in Australia, especially within the free range sector of the industry (Grimes & Reece, 2011). The disease is less commonly found in barn and cage birds and parent stock (Scott, 2016). The recent identification of Campylobacter hepaticus, as the causative agent...
Comments : 0
Recommendations: 0
.jpg&w=3840&q=75)
1. Introduction “Feed-food competition” was defined as “the tensions and trade-offs between two alternative uses for edible crops: direct consumption by humans versus feeding livestock” (1). However, feed-food competition includes the use of production resources, such as land, wild fish, and water, and labor, capital, and ecosystem services. The allocation of these resources between all their possible uses is often determined by which end use is most...
Comments : 16
Recommendations: 4
Lilong Chai (University of Georgia) discusses advantages and issues of cage-free poultry houses regarding pecking behavior, egg production, and dust bathing, among other aspects, in this Engormix interview. ...
Comments : 0
Recommendations: 1
1. Introduction The surface of eggshells can be contaminated by bacteria such as Escherichia coli and Staphylococcus spp., which may account for 84% and 77% of the present Gram-negative and Gram-positive bacteria, respectively [1]. In addition to antibiotic resistance [1], Escherichia coli and Staphylococcus spp. (e.g., Staphylococcus aureus) may also be associated with the death of chicken embryos [2,3]. Eggs appear to be quite vulnerable to several threats, even biofilm...
Comments : 0
Recommendations: 0
Author details: 1 Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, South Korea; 2 Kemin Animal Nutrition and Health, Asia Pacific, Seongnam-si, Gyeonggi-do, South Korea. Introduction Nutrient supply to meet requirements accounts for the largest share of poultry production costs, within which protein (i.e., AA) supply makes up the second largest portion. The feeding of reduced protein diets is targeted to...
Comments : 0
Recommendations: 0
.jpg&w=3840&q=75)
Thomas Dixon (Hy-Line) discusses the cost and price increase that comes with this change, and how to adapt to it, during the Avicolas and Porcinos event in Buenos Aires, Argentina....
Comments : 1
Recommendations: 0
Gut health challenge is one of the major factors affecting production and profitability in commercial laying hens. In addition, chronic heat stress results in lowered feed intake, egg production, egg quality, gut microbiome and also impairs acid-base balance in laying birds. Numerous data support that laying birds fed with organic acid improved egg production and quality (Sakdee et al., 2018; Zhang et al., 2022). Butyric acid, an important organic acid serves as a primary source of energy...
Comments : 0
Recommendations: 2
Increased global production, and consumption of the hen egg; and the popularization of nutritional knowledge, places greater emphasis on egg quality, safety, and freshness. An understanding of the interaction between several egg quality indicators is necessary. A total of 300 freshly-laid eggs were analyzed within 24 hours of collection to investigate the phenotypic correlations between internal and external quality indicators. Eggs were analyzed for egg weight, breaking strength,...
Comments : 0
Recommendations: 0
1. Introduction Trace minerals such as zinc (Zn), manganese (Mn), and copper (Cu) play critical roles in bone formation and eggshell quality [1,2]. Zn supports bone and cartilage integrity by facilitating collagen formation and hydroxyapatite crystallization [3], while Mn contributes to bone development by activating enzymes involved in synthesizing mucopolysaccharides in bone cartilage [4,5]. Cu is essential for maintaining bone tensile strength by aiding in the cross-linking of...
Comments : 2
Recommendations: 4
Jonathan Cade, President of Hy-Line, shares his vision on poultry genetics, focusing on improving flock viability and extending production cycles....
Comments : 0
Recommendations: 1
Princess Cortez, SE ASIA Technical Specialist & Lead Nutritionist at Hy-Line, shares insights on the region’s growing egg consumption, the role of genetics in improving production, and key strategies for producers to enhance efficiency and profitability. ...
Comments : 0
Recommendations: 1
Christian Budi Listianto, SE ASIA Technical Service Specialist at Hy-Line, shares insights on rising egg consumption in Southeast Asia, driven by economic growth. He highlights Highline International’s role in helping producers boost efficiency and expects demand to keep growing....
Comments : 0
Recommendations: 0