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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.
1. Introduction Small-scale poultry production is a very common practice in rural households around the world, and several studies have evidenced that these production systems have played and continue to play an important domestic socio-economic role in many poor rural households [1,2]. Backyard poultry production systems (BPS) are the most popular systems within small-scale poultry production, where animals are usually kept without proper disease prevention or control...
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PSA interviewed Deana Jones with the USDA Agricultural Research Service to discuss egg safety and storage. We also take a look at "cracking" some egg myths. Let's Squawk About It is a monthly interview segment by the Poultry Science Association....
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Maarten De Gussem (Vetworks) talked about the lessons learned in Europe by using free range production, during APA Egg Congress in Sao Paulo, Brazil....
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Yolk color was determined to further evaluate the level of raw materials-containing xanthophylls which affect the yolk color pigmentation. In this photo, the upper left can be considered having 14 as its color grade while the other one, 12.5 as its color grade. Yolk color doesn't imply nutritive value although, there are differences in micronutrients moreover, an egg is an egg after all....
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Speculation over the Provisional Ruling on Anti-dumping Duties of Lysine by the EU Against China
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Amino acid pullet nutrition affects growth and development and it is important to evaluate potential effects on egg traits. One experiment was conducted to determine the effects of four amino acid (AA) dietary levels fed to broiler breeder pullets during the rearing phase from 5 to 24wk of age on egg characteristics. A total of 1,360 Cobb-500 slow-feathering pullets were placed in 16 floor pens (85/pen). Up to 4wk all pullets were fed one starter diet in crumbles and after 29d of age fed...
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ABSTRACT
Improving productivity, reducing feed cost or increasing economic efficiency are main challenges in laying hen farms. Thus, the present experiment was conducted to study the effect of different levels of lysine and Total Sulfur Amino Acids (TSAA) on productive performance, egg quality and economical evaluation of Lohmann Brown laying hens . A total number of 144 hens...
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INTRODUCTION Consumer demand for eggs in North America has been steadily increasing, with retail growth of 6% in 2018 in Canada, up from the 4.1% growth seen in 2017 (Egg Farmers of Canada, 2017, 2018). In the United States, 2018 per capita egg consumption increased by 2.1% over 2017 (USDA, 2019). It is therefore critical to establish suitable nutritional and management strategies that accommodate these increased production goals, while accounting for the economic, social, and...
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1. Introduction Ancestors of modern poultry lived in social groups of 20 to 30 chickens. In current non-cage systems, the flock sizes are much larger. Laying hens are not able to remember or recognize all flock mates in such systems and there is complete absence of social hierarchy [1]. This results in feather pecking, which is one of the greatest challenges in commercial laying hen husbandry [2]. At present, non-cage systems are prevalent in Europe and North America....
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High quality eggs begin with a well-structured hen nutrition program. Learn how MINTREX® chelated trace minerals can ensure a constant production of high quality eggs throughout the laying cycle by supporting eggshell strength and reducing broken eggs....
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INTRODUCTION The egg industry is enjoying increased production as consumers have become more educated about the nutritive value of eggs. Eggs are relatively inexpensive per unit of protein and energy, therefore egg consumption has continued to increase in developing countries (Leeson and Summers, 2005). For several decades, antibiotics and chemotherapeutics in prophylactic doses have been used in animal feed to improve animal welfare and to obtain economic benefits in terms of...
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Bacillus amyloliquefaciens CECT 5940 (Ecobiol®) go beyond performance in broilers under enteric pathogen challenge compared to antibiotic growth promoter and other commercially available probiotics
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Introduction To achieve good hatchability and chick quality, fertile eggs need careful management from the time they are laid. Environmental conditions during egg collection, egg shell disinfection, transport, pre-storage incubation, storage, pre-warming or during incubation are all important. Inappropriate treatment can result in depressed hatchability, change the pattern of embryo mortality and may also affect post-hatching performance. The investigative procedures can be used...
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The objective of this trial was to compare the effects of OH-Methionine compared to DL-Methionine on laying performance and egg quality of Babcock laying hens on a 14-week period under tropical climate. The work was presented in a poster at 22nd ESPN (European Symposium in Poultry Nutrition) in Gdansk (Poland) and in an oral communication by Dolores Batonon-Alavo at PSA (Poultry Science Association) in Montréal (Canada). Trial methodology The study was performed on...
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Are there correlations among hen day egg production, egg weight and feed intake in broiler breeder hens? What happens to egg weight, hen day production and feed intake in aged broiler breeder hens (55-70 weeks)? Do broiler breeders decrease in weight when they reach a particular age? ...
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Adequate pullet nutrition is essential to obtain the BW and development suitable for reproduction. An experiment was conducted to determine the effects of four amino acid (AA) dietary levels fed to broiler breeder pullets during the rearing phase from 5 to 24wk on BW, abdominal fat deposition and development. A total of 1,360 Cobb-500 slow-feathering (SF) pullets were placed in 16 floor pens (85/pen). Up to 4wk all pullets were fed one starter diet in crumbles and after 29d of age fed with...
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Effect of <i>Cordyceps militaris </i> Hot Water Extract on Immunomodulation-associated Gene Expression in Broilers, Gallus gallus (Extract)
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Influenced by temperature and ultraviolet radiation, the activity of virus is limited in summer, but the higher temperature leads to the decrease of feed intake of chickens. When the feed intake decreases, the intake of energy and protein decreases accordingly. At the same time, the concentration of digestive enzymes in intestine decreases due to the increasing water intake. And the time of chyme passing through digestive tract shortens. The digestibility of nutrients, especially most...
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I. INTRODUCTION In order to improve production, nutritionists endeavor to increase digestibility, availability of nutrients in the diet and to obtain more product consumed per unit feed, and therefore they consider total nutrient intake and retention as well as waste output. Although poultry is highly efficient in converting feed to egg or body gain, the presence of components such as antinutritional factors and indigestible nutrients in the feed may reduce production...
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Darrin Karcher (Purdue University) explained this measure that can be taken during a disease outbreak to avoid depopulation and maintain production, in an interview during the Multi-State Poultry Feeding and Nutrition Conference and Silvateam's Technical Symposium in Indianapolis, USA....
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Kayla Price (Alltech) explained the process of achieving great quality and discussed oviduct structure, eggshell composition and organic minerals, among other subjects, during the Multi-State Poultry Feeding and Nutrition Conference in Indianapolis, USA....
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Mike Persia (Virginia Tech) explained his research on amino acid requirements -particularly tryptophan and valine- and egg quality, during the Multi-State Poultry Feeding and Nutrition Conference in Indianapolis, USA. ...
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Introduction Using quails as a model for poultry production was already evaluated by Wilson et al (1961), and by Nelson (1966) specifically for egg yolk color. More recent references of quails as a model for chickens’ egg yolk color have not been found. This work updates the one of Nelson with present birds’ strains and pigments to predict laying hens’ egg yolk color from quails’ egg yolk color. Materials and methods The studies were...
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