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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.
New results on the effects of Progres® in laying hens were recently presented in the 7th International Conference on Poultry Intestinal Health (ICPIH2022), Cartagena De Indias,...
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We use an equal proportion of water an formalin, 8-10 hours after egg transfer, one container in front of hatcher and 1 in the back. There is some problems such as : Hatch delay, Ventilation adjusment, .... whats your solutions for day-old chick color uniformity? ...
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The eggshell provides mechanical protection to the content of the egg and acts as a barrier against microbial infections. It should look clean, smooth, homogeneous, and free of cracks. Cracked or broken eggs are prone to microbial contamination, posing a threat to consumer health (table eggs) or having a significantly reduced hatchability (fertile eggs). In general, 3% to 6% of the total eggs laid are discarded due to breakage. ...
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I. EPIDEMIOLOGY OF SALMONELLA INFECTIONS Most Salmonella strains belong to non-host specific or broad-host range serotypes, and thus can colonize the gut of many animal species, including humans. In contrast to host-specific serotypes that cause septicemia and severe disease (typhoidal serotypes), the broad-host range serotypes are asymptomatically colonising the host in most cases, but can cause diarrhoea when high numbers of bacteria are orally take up at once, as is...
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How to determine the nutritional quality of feeds and raw materials?
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INTRODUCTION The global production of chicken eggs is constantly increasing, e.g., 37.4 million tons of chicken-eggs were produced in 1990, and 80 million tons in 2018. The WHO has estimated that production will have to increase four-fold to meet the global demand for chicken eggs in the next two decades (1, 2). Hence, the poultry industry must be increasingly efficient despite being one of the most efficient and technologically advanced animal production activities...
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Chicken eggs for human consumption are exceedingly nutritious, palatable, reasonable priced, and commonly accessible around the world. There is an increasing demand for enriched and functional foods for human consumption that provide various beneficial effects in addition to the nutritive and non-nutritive compounds important to human health 1 . Eggs can be enriched with certain nutrients through dietary manipulation to create speciality or functional food products that provide...
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Performance of broilers fed diets supplemented with an experimental direct-fed microbial in the presence of a moderate Clostridium perfringens challenge in a 42-day floor pen trial
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The modern broiler chick spends 50% of its life in an embryonic state. It is therefore important to ensure that adequate nutrients are available to the developing embryo, which is completely reliant on the diet fed to the breeder hen. Consequently, the physiological status of the chick at hatching is greatly influenced by the nutrition of the breeder hen. The nutrient supply to the broiler breeder is a sum of the actual nutrient content of the diet and the quantity or volume of feed...
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Oscar Garrison (United Egg Producers) talks to Sam Shafer (PSA) about consumer preferences and challenges in the industry. Let's Squawk About It is a monthly interview segment by the Poultry Science Association....
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Darrin Karcher (Purdue University) talks to Sam Shafer (PSA) about consumer demands, poultry welfare, and changes in the industry. Let's Squawk About It is a monthly interview segment by the Poultry Science Association....
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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....
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During IPPE 2022 in Atlanta, Edgar Oviedo-Rondón (North Carolina State University) talked about two projects where they worked together with companies to improve their decision-making process by using data. You can find more information on this program here: https://poultry.ces.ncsu.edu/the-poultry-decision-makers-workshop-series/....
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INTRODUCTION Hemp ( Cannabis sativa L.) is an annual herbaceous plant belonging to the family Cannabinaceae (Turner et al., 1979), traditionally grown for fiber and seed production. Whole hemp seed contains approximately 25% crude protein, 33 to 35% oil, and 34% carbohydrate, in addition to a broad range of vitamins and minerals (Darshan and Rudolph, 2000; Callaway, 2004; House et al., 2010). Hemp seed oil contains 75 to 80% polyunsaturated fatty acids (PUFA),...
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INTRODUCTION As a nonpolar amino acid, Valine (Val) is one of the most hydrophobic amino acids (Brosnan and Brosnan, 2006). Val, leucine, and isoleucine are called branched chain amino acids due to the branched chain structures of their R groups. In animals, Val serves as a precursor for the synthesis of protein and other amino acids (Ferrando et al., 1995). As a glucogenic amino acid, Val is a substrate for glutamine synthesis which is involved in the Krebs cycle (Wu,...
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by Sam Shafer
Looking for a golden goose? Try a goose that’s two years old. In a recent study, researchers with the Heilongjiang Academy of Agricultural Sciences found that goose egg yolks (the most valuable part of the egg) tend to be at their largest following the goose’s second laying season.
The Journal of Applied Poultry Research study links a...
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Effects of DON and antidote on pro-inflammatory mRNA expression of broiler
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Eggshell quality can be affected by multiple factors. This article focuses on eggshell problems derived from calcium deficiency and heat stress , a frequent problem during warm seasons. The eggshell is mainly composed of calcium carbonate, and it is estimated that a laying hen secretes approximately 600 grams of calcium during its laying period to form the eggshell, which is thirty times the amount of calcium present in its body. This fact shows the high calcium...
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We have a layer poultry farm here in the philippines. 2 bldg. with a population of 9,400/bldg. The breed is lohman white. Age is between 20 - 28 weeks old with a production of 70% and 90%. The problem is our mortality is ranging from 10 - 15 heads per building per day. primary cause of death is prolapse and egg bound. we fed them with a high enery feeds, does the high energy feeds contributes to our chicken prolapse? Temperature is around 28 to 30degree celcius....
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INTRODUCTION Vitamin D is a group of closely related compounds that have antirachitic activity. It has been estimated that nearly 50% of the United States population is at risk for vitamin D deficiency or insufficiency (Holick et al., 2011). Vitamin D 3 (D 3 ) deficiency can cause rickets in young children or increase the risk of osteoporosis and osteomalacia in adults (Holick, 2005). One approach to increase D 3 intake in a population without...
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Light plays an important role in controlling the age at sexual maturity in birds; attaining sexual maturity at an appropriate age and weight is the key to reproductive success and the present study was an effort in the same direction. To develop specific practice for quail production and to optimize the best age for photo-stimulation present experiment was conducted. In total 225 females and 75 males of 5 week old were studied. A completely randomized design with three treatment of 5...
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Introduction Modern layer hybrids are a four-line-cross with a long breeding history and show a very high production potential in different housing systems all around the world. This proofs for white egg producing lines and for brown egg producing hens as well. Due to ongoing genetic work the egg industry and farmers realise steadily increasing persistency and longer liability under all housing conditions. The higher performance has been achieved by an increased efficiency too,...
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1. Introduction Fatty acids, especially essential fatty acids, are gaining importance in poultry feeding systems not only for improving the health and productivity of birds, but also because of our health-conscious society that prefers properly balanced diets to minimize adverse health issues [1–3]. Among various fatty acids, omega-6 (ω-6) and omega-3 (ω-3) fatty acids are proving indispensable in a properly maintained ratio for numerous biological [4,5],...
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