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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.
Hydroxychloride trace minerals (HTM) have covalent bonds and thus are less reactive both in the feed and in the digestive tract compared to inorganic trace minerals, which contain ionic bonds (ITM) such as sulphate forms. Therefore, HTM may have higher bioavailability than ITM. This study aimed to evaluate the effects of replacing sulphate forms of zinc (ZnSO 4 ), manganese (MnSO4) and copper (CuSO 4 ) (ITM) with HTM sources on tibia bone traits and mineral content in...
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1. Introduction The availability of good quality quail eggs to consumers depends on the degree of deteriorative impacts they have suffered before being offered for sale. This degree of deterioration will be determined by the management of the eggs, which mainly includes the environmental conditions to which they are subjected, whereby the degree of internal deterioration of eggs is lower in cool compared to hot environments [1,2]. However, these cool environments will only be fully...
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Srinivasa Farms and Hy-Line: Pioneering Growth in India’s Poultry Market
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1. Introduction Listeria monocytogenes is a foodborne pathogen of notable concern, especially due to its growth under household refrigeration temperatures (40 ◦F, 4 ◦C) and at a pH range of 4.5 to 9.6 [1–3]. Listeria monocytogenes has been subdivided into four phylogenetic evolutionary lineages due to variations in ecology recombination rates and genomic content [4,5]. Lineage I consist of most human clinical isolates and includes serotypes 1/2b, 3b, 3c, and 4b...
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Jung Wook Lee, Program Manager Nutritional Solutions at Trouw Nutrition, highlights the roles of Trace minerals in egg shell production and quality, How they mitigate heat stress and more...
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I. Introduction Eggs are an affordable raw agricultural commodity with a high nutrient density. Eggs serve a key role in diets around the world. Maintaining the quality of eggs is a worldwide concern. Generally, there are three types of egg quality: 1) physical, 2) functional, and 3) microbial. During this presentation, all three types of egg quality will be discussed and factors which influence egg quality characteristics will be explained. Understanding the types of egg quality, as...
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I. Introduction Pullet body weight (BW) has significant impact on hen sexual maturity, egg productivity and flock uniformity (Lacin et al. 2009). Australian layer flocks are frequently 100-300 grams heavier than breed standard weight (BSW) (Parkinson et al. 2015). These birds typically lay larger eggs than LW hens and higher BW is symptomatic of bird obesity which can result in the production of excessively large eggs with lower eggshell quality and poorer persistency of lay in late...
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The aim of this study was to evaluate the impact of feeding xylo-oligosaccharides (XOS), xylanase (XYL) and fermentable fibre, in the form of wheat bran (WB), on egg quality. It is theorised that WB stimulates and trains the microbiota in the hindgut to hydrolyse and ferment dietary xylan, and XOS and XYL may further upregulate xylan fermentation pathways, resulting in improved nutrient utilisation and thus egg quality. Isa Brown hens (n = 96 hens) were obtained at peak lay (39 weeks of age)...
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The rainy season is here and may contribute to stress in egg producing layers. Cold stress negatively impacts layers' metabolism, immune function, and egg production. By providing proper protection, including adequate housing, insulation, and balanced nutrition, we ensure optimal health, productivity, and egg quality.
Cold stress can impact a layers' immune function and productivity. By optimizing zinc and manganese levels with a better source of minerals, you may enhance immune response,...
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Effects of dietary amino acids in ameliorating intestinal function during enteric challenges in broiler chickens
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Darrin Karcher (Purdue University) talks to Sam Shafer (PSA) about the reasons behind the increase in egg prices. In this episode of Let's Squawk About It, they discuss supply chain, new restrictions, labor shortage, and inflation as some of the factors involved....
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The Shell Egg Academy (SEA) – In-Person Edition from Purdue University Extension is open now for registration!
SEA will be held September 26-28, 2023 at Purdue University in West Lafayette, Indiana. The educational event provides interactive class sessions on egg quality and...
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The American Egg Board Research Award is given to the recipient who has increased the interest in research pertaining to all things related to eggs. This could include areas related to egg production, safety, product quality, or egg science technology. This is an annual award.
Ramesh...
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How does heat stress in poultry impact overall performance, productivity, and the quality of meat or eggs? Andras Palla, Regional Technical Manager-Poultry at Trouw Nutrition Asia Pacific responds this question
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Introduction In poultry production systems, feed represents between 70 and 80 % of production costs; energy, protein, and amino acids are limiting factors that significantly affect the poultry industry’s feed costs and performance (Cancherini et al., 2005). The availability of the synthetic amino acids methionine and lysine in poultry feeds allowed lower protein levels since these amino acids limit portions for chickens and hens (Ramírez & Gonzalez,...
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International Poultry Welfare Alliance (IPWA) and US-Roundtable for Sustainable Poultry & Eggs (US-RSPE) are pleased to announce the results of its recent board of director elections.
The US-RSPE is an independent, multi-stakeholder organization with members representing growers,...
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Effects of DON and antidote on pro-inflammatory mRNA expression of broiler
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Our Technical Manager for Poultry, Andras Palla, discusses the effect of heat stress in poultry especially in laying hens. Understand how heat stress affects egg production and how to mitigate the effect of temperature related issues in the farm....
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Introduction With increasing age not only the absolute thickness of the eggshell declines, also a long-lasting stress exposure during weeks of high laying rates will affect formation of matrix proteins resulting in an increased egg shell breaking rate as well as in decreased performance. Both points are of economic relevance and appears to be a limiting factor in the prolonged and, thus, sustainable use of laying hens. Hypothesis The wood-derived feed...
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The issue of antibiotics resistance on animals has raised concerns about meat safety and human health. The banning of antibiotics- growth promoter in animal feed was announced in the EU in 2006. Other countries are starting to follow the regulation to comply with the compulsory withdrawal periods to ensure ‘antibiotics free products. Supplementation in nutrients to enhance the immunity system and lower the risk of the pathogen can help to reach the balance between maintaining animal...
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Genetic progress in laying hens has never been so clearly visible in the field throughout the past decades. Modern selection methods, such as genomics and fully automated measurements, as well as massive investment in the expansion of our R&D programme have...
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Srinivasa Farms and Hy-Line: Pioneering Growth in India’s Poultry Market
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INTRODUCTION Feed cost accounts for approximately 60 to 70% of total production cost in the egg industry (Wilkinson, 2018). Out of this, 85% correlates to the energy and protein content of the laying hen diet (Santana et al., 2018). While reducing crude protein ( CP ) levels in diets may offer some advantages for the environment and reduce the feed cost, maintaining the birds’ digestive health and development performance is difficult. With the addition of synthetic...
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INTRODUCTION In the worldwide poultry industry, egg-laying production efficiency is a significant economic trait. Excellent productivity is measured by the number of ovarian follicles heading for ovulation and the efficiency of the oviduct to convert the ova into a hardshelled egg. But to increase number of ovarian follicles many factors are involved like Nutritional factors, Pathological factors, Managemental factors and Climatic factors. Before going to topic of available...
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