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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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What shape are the pores in chicken eggs? The pores allow for exchange of air in to the sac to allow the chicken to breath while it is developing in the shell. the pores also allow moisture in to keep up fluids so that the chicken does not dry out on development stage. Why do they pores do this and how does the pore prevent any infection from gaining entry. Is it due to the shape of the pore? What size diameter is the poor on the inner part of the shell and on...
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BMC Genomics 2014, 15:220 doi:10.1186/1471-2164-15-220 The electronic version of this article is the complete one and can be found online at: http://www.biomedcentral.com/1471-2164/15/220 Received: 12 December 2013 Accepted: 11 March 2014 Published: 21 March 2014 © 2014 Brionne et al.; licensee BioMed Central Ltd. This is an Open Access article...
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INTRODUCTION Omega-3 polyunsaturated fatty acids (n-3 PUFA), mainly eicosapentaenoic acid (EPA, 20:5 n-3), docosahexaenoic acid (DHA, 22:6 n-3) and alpha-linolenic acid (ALA, 18:3 n-3), are suggested to reduce the risk of cardiovascular diseases and certain forms of cancer, as well as to improve brain development and function. Due to compelling evidence supporting the health benefits of n-3 PUFA consumption, various...
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Veterinary Immunology and Immunopathology journal, Volume 160, Issues 1–2, 15 July 2014, Pages 1–11 Received 12 December 2013, Revised 29 January 2014, Accepted 3 March 2014, Available online 16 April 2014 DOI: 10.1016/j.vetimm.2014.03.005 Abstract Sepsis is a systemic inflammatory response syndrome during infection....
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Introduction Multilevel, interactive defense strategies that function across biomineralized barriers are a hallmark of sophisticated biological structures. The calcareous avian egg, the hallmark of reproduction in birds, is a complex multilayered structure [1]. The eggshell resists physical and pathogen challenges from the external environment, while satisfying a variety of metabolic and nutritional needs of the...
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Professor, Head, Division of Clinical and Functional Anatomy at the Faculty of Medicine, University of Ottawa, speaks about his paper presented at the EPC and about his new research. ...
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Many factors affect egg quality. Sometimes the cause is not a single factor but a combination of factors. A few of these problems can be prevented or reduced by good hen management. Producers should remember that genetics, feed quality and environment play a role in egg quality. The most reliable factor is age. A young pullet produces smaller eggs with strong egg shells and albumen that stands high. As the hen ages, the shells thin, and the albumen begins to weaken and run. Hens can be molted...
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Innovative Directions in Aflatoxin Testing Point to Measureable Gains in Quality Of Lab Data
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1National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, China Agricultural University, Beijing, China, 2Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Ya’an, China, 3Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa,...
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Eggshell translucency is the appearance of lighter coloured regions of the shell visible when an egg is viewed over a light source. Some research has been conducted into the causes of translucency in the past but there has been little work recently and the cause of translucency remains uncertain. This study aimed to identify the structural cause of eggshell translucency and determine if translucency correlates with bacterial penetration of eggs. ...
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There are many factors that affect the overall quality of the egg shell, but before discussing these factors, it is important to know what makes up the structure of the egg shell. The egg shell consists of about 94 to 97% calcium carbonate. The other three percent is organic matter and egg shell pigment. There are also as many as 8,000 microscopic pores in the shell itself. The outer coating of the shell itself consists of a mucous coating called the cuticle or...
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GuanAMINO® - The creatine source that ensures optimal nutrient utilization | Evonik
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Does the weight of birds affect the egg size ...
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This study is an update of data presented previously (Roberts & Chousalkar, 2012) from a study which investigated egg quality at different stages of lay. Although eggs produced in Australia are considered medium to low risk for food borne illness, the egg industry in Australia is periodically implicated in cases of food poisoning. Egg shell defects may potentiate the movement of bacteria into the egg. Two egg shell characteristics were targeted: the extent of cuticle...
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I. INTRODUCTION Food borne illness costs Australia an estimated $1.2 billion per year (Hall et al., 2005). The annual report of the OzFoodnet network (2009) reported 9,533 cases of Salmonella infection. Although the eggs produced in Australia are of good quality, the egg industry is often blamed for cases of food poisoning due to Salmonellosis. Salmonellosis can be acquired by the ingestion of raw or undercooked eggs. As well, cross contamination...
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ABSTRACT This study was conducted to determine the effects of organic and inorganic chromium (Cr) supplementation on performance parameters, eggshell quality and some serum parameters of laying Pharaoh quails (Coturnix coturnix Pharaoh). Laying quails(n: 360; 59 days old) were randomly divided into three experimental groups each including 120 birds. Basal diet applied to control group was based on corn-soybean meal without additional organic or...
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Usually only chicken eggs are sold in general grocery stores. Some specialty stores, such as health food stores, may sell duck and/or quail eggs as well. Turkey and goose eggs are rarely sold for human consumption. Brown and white shelled eggs are available on the market. They are nutritionally the same. Since brown egg layers are slightly larger birds and require more feed, the price of brown eggs is generally higher than that of white eggs. Meeting consumer demands is a constant...
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