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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.
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Mike Persia (Virginia Tech) Experiments were conducted to determine the bioavailability of fine ground aragonite (FGA) using 0-14 d old broilers and to determine the use of FGA on performance, eggshell quality, and tibia ash (TA) of laying hens from 28-56 wks. In experiment 1, 450 as hatched Ross 708 broilers were fed a basal diet without either LS or FGA containing 0.35% Ca and LS and FGA additions resulting in 0.43, 0.51, 0.59, and 0.67% Ca. Body...
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Duarte Neves (Zinpro) comments on how translucency can be used as a novel eggshell quality parameter to predict the hatchability of fertile eggs, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Veterinary APIs Market Update: Price Trends & Key Insights – February 2025
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Mike Persia (Virginia Tech) explains the characteristics of aragonite, how it is harvested, and its potential as a calcium source for poultry nutrition, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Duarte Neves (Zinpro) explains how amino-acid complexed mineral supplementation to broiler breeders can positively impact eggshell quality and translucency, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Trends and challenges in Poultry Production: Jonathan Cade, President of Hy-Line International
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John Boney (Pennsylvania State University) comments on improvements in egg production with superdosing of phytase while reducing phosphorus, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Fausto Solís (The Wenger Group) speaks on a replacement of calcium carbonate in layer diets, as well as the importance of magnesium levels, during this interview at IPPE in Atlanta, USA....
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Lieske van Eck (Cargill) talks about a tool developed to measure body fat level in laying hens and how it helps in the decision-making process to get better egg persistency and better egg production, in this interview during IPPE 2024 in Atlanta, USA....
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I. INTRODUCTION Feeding the world’s projected burgeoning human population increase of 2.2 billion people by 2050 will place tremendous pressure on food security. The poultry industry is innovative and well positioned to address this problem through increased efficiency and waste reduction. Globally, 32% (by weight) of produced food − equivalent to 1.3 billion tons − is lost or wasted every year. Conversion of food waste into raw materials for production of poultry...
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I. INTRODUCTION With ongoing genetic selection for improved persistency of lay and feed efficiency (FE) in laying hens, the egg industry is pursuing the opportunity to extend layer hen lifespan until they are 100 weeks of age (WOA), with an aim for each hen to produce up to 500 eggs. This presents some challenges for the hen as during this longer laying cycle she will be producing more than 31 kg of egg product (Muir et al., 2022c) and using approximately 1 kg of calcium (Ca) to...
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I. INTRODUCTION Modern broilers grow quickly because they have tremendous genetic potential due to intensive selection for increased growth rate and efficiency (Zuidhof et al., 2014). The parents, broiler breeders, carry this genetic potential and when fed ad libitum, easily become overweight (Heck et al., 2004), compromising reproductive performance (Renema and Robinson, 2004; Chen et al., 2006) and reducing welfare (Mench, 2002). Thus, broiler breeder hens are typically feed...
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I. Introduction A consistent definition of aging was presented by DiLoreto and Murphy (2015). According to these authors, aging is the result of the non-functionality of the animal's cells, tissues and organs, caused by the stochastic degradation of its parts. This definition considers the changes that have occurred in laying hens that affect the rate of lay (Gu et al. 2021a, 2021b). The main changes are related to the digestive, reproductive system, endocrine glands and...
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1-Monoglycerides of short and medium chain fatty acids (monobutyrin, monocaprin and monocaprylin) have shown positive effects on cell metabolism, intestinal integrity and immune system (Calder 2008). However, little is known about their effect on laying hen health, performance and egg quality. Therefore, this study was designed to add further insight into the applied benefits as well as optimal inclusion level of 1-monoglycerides of butyric, capric and caprylic acid on hen performance, their...
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Changing Feed Industry Imperatives Call For A Closer Look At On-Site Aflatoxin Test Methods
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Minerals such as copper, manganese and zinc are essential nutrients for enzyme functionality, immune system responses, tissue and bone quality as well as eggshell formation (Richards et al., 2010). Organic trace minerals are used in animal feeds to provide increased mineral bioavailability. In this experiment we investigated the benefits of hydroxy analogues of chelated trace minerals on pullet quality. Three hundred- and sixty day-old Isa Brown layers were randomly allocated into two groups...
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I. Introduction Ingredients other than in-feed antimicrobial compounds can offer a sustainable approach to improving gastrointestinal (GI) health and animal performance. Efficient egg production and egg quality are of major importance to the poultry industry, but their optimisation is dependent on numerous factors. Nutrition and disease factors are among the most common factors affecting egg production and quality (Roberts, 2004). It follows that a healthy GI tract is required for...
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Feed Conversion Ratio: Unveiling the Secrets of Sustainable Livestock Production
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Jonathan Cade, President of Hy-Line International, talks about the current trends and challenges in poultry production and how the Hy-Line team supports egg production worldwide...
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In cage-free housing, multi-tiered aviary structures are often used (pictured above), where key resources (i.e., feed, water, nests, perches) are available on elevated platforms called tiers, and litter substrate is available on the ground floor for dustbathing and foraging. Hens move vertically and horizontally...
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Ioannis Brouklogiannis (Agricultural University of Athens) This study was conducted to investigate the inclusion level effects of a natural phytogenic blend (PB) on production performance, egg quality, and underlying detoxification (aryl hydrocarbon receptor; AhR), antioxidant (nuclear factor erythroid 2-related factor 2; Nrf2) and inflammatory (nuclear factor-kappa B; NFκB) responses in layers’ duodena and ceca. Depending on PB...
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Ioannis Brouklogiannis (Agricultural University of Athens) presents his research on the benefits of phytogenics to production performance and egg quality in laying hens, during the 11th Symposium on Gut Health in Production of Food Animals in St. Louis, USA....
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Veterinary APIs Market Update: Price Trends & Key Insights – February 2025
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About the study Phytase supplementation has become a standard practice for poultry diets to enhance phosphorus (P) utilization and subsequently reduce P excretion. Previous phytase studies on hen performance, eggshell and bone quality have been done over short durations and using hens of varying ages. The knowledge gap is that there are no long-term phytase studies covering the rearing period through the end of production cycle. The objective of this study was to...
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Summary This study was conducted to test the efficacy of phytase in low phosphorus and calcium diets in the late production cycle for maintaining the productivity, eggshell and bone quality of hens fed low phosphorus and calcium. Problem Exogenous phytase supplementation has become a standard practice for poultry diets to liberate available phosphorus and reduce excretion of phosphorus in manure. Many studies showed that phytase supplementation increased egg...
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