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Gangrenous dermatitis (GD) is a serious bacterial disease affecting poultry. It generally is fatal, often within 24 hours. It sometimes seems to appear almost out of nowhere because suddenly you will have healthy birds and dead birds, but not many birds in between. While GD has been reported in commercial layers, turkeys, and broiler breeders, it usually occurs in fast-growing broilers between 4 and 8 weeks of age .
In recent years, there has been an increase of...
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Introduction Salmonellosis is a significant global public health issue and causes high morbidity rate and has a significant economic impact. Foodborne diseases persist in many countries and consider the most important public health problem. There is global improvement in food processing practices, hygiene measures, education of food handlers on the potential risks and information to consumers for proper utilization, but still so far to eliminate the foodborne pathogen problem...
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by Sam Shafer
Preventing disease transmission between flocks is a major goal of the poultry industry. One threat to bird health is the protozoan Histomonas meleagridis, which causes a disease called histomoniasis. In commercial turkey flocks, histomoniasis has a mortality rate of 80 to 100 percent. To stop outbreaks, scientists and poultry producers need a better understanding of how the disease spreads.
Now a new study, published in the June issue of the...
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PSA interviewed Casey Owens (University of Arkansas) about the differences between red meat and white meat in poultry and pork. Let's Squawk About It is a monthly interview segment by the Poultry Science Association....
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Introduction Reproductive efficiency of roosters and the hens they mate determines the breeding flock fertility which is as important to the entrepreneur as the egg lay is (Akhlaghi et al., 2014). Fertility is essential to produce the maximum number of quality chicks per hen housed. Without producing fertile eggs, the best incubators and hatchery management procedures cannot produce chicks (Bramwell et al., 1996). Through intense genetic selection and improved nutritional...
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In this study, the effect of sustainable probiotics on Campylobacter jejuni colonization and gut microbiome composition was evaluated using chicken as a model organism. Chickens were given Lactobacillus casei over-expressing myosin-cross-reactive antigen (LC+mcra). LC+mcra can generate bioactive compounds in larger quantity including conjugated linoleic acid. A total of 120 chickens were used in duplicate trials to investigate the effectiveness of LC+mcra in decreasing C. jejuni colonization...
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Introduction Avian respiratory tract infections are associated with massive economic losses particularly under poor intensive rearing conditions in winter sea-sons. Several pathogens, adverse environmental conditions and poor managemental factors are involved [1–3]. Pathogens include avian influenza virus (AIV), Newcastle disease virus (NDV), infectious bronchitis virus (IBV), avian pneumovirus (APV), Mycoplasma gallisepticum (MG), and avian pathogenic E. coli (APEC)....
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1. Introduction The poultry industry has been suffering from several pathogens in Egypt during recent decades, including avian influenza viruses (AIV) that may be either highly pathogenic avian influenza (HPAIV; H5N1, H5N2, H5N8) or low-pathogenic avian influenza (LPAIV; H9N2) viruses, velogenic Newcastle disease virus (vNDV), infectious bronchitis virus (IBV; variant 1, variant 2, and classic wild virus), infectious bursal disease (either variant or virulent virus),...
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INTRODUCTION Newly hatched birds have immature and undeveloped immune system (Bar-Shira et al., 2003). Maternalderived antibodies (MDA) play a critical role in early protection against pathogenic organisms (Kramer and Cho, 1970). Maternal antibodies are immunoglobulins that are transferred from vaccinated or naturally infected breeder hens to the progeny through the egg, which provide passive immunity to progeny and protect them against infectious...
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An immunomodulator is any substance that helps to regulate the immune system. The function and efficiency of the immune system may be influenced by various exogenous and endogenous factors resulting in either immunosuppression or immunostimulation. Several compounds with an...
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Featured comment:
Dear Tejada Thank you for your comment Yes as we all know in the several reports pelleted diet had a good effect on performance parameters, but in broiler due to short life cycle (42-45 days), the positive energy balance in them may not be paid much attention, but because of the nutritional status of the bird influences lipid metabolism in liver, in another study we used plant extracts as feed additive, and our results suggested all remedies used as potential candidates for the...
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1. Introduction Aflatoxins are highly toxic and carcinogenic compounds produced by Aspergillus flavus and closely related fungi in several crops [1]. Maize (Zea mays L.) and groundnut (Arachis hypogea L.) are amongst the most susceptible crops. Crop contamination with these potent compounds negatively affects both human and animal health, the income of farmers, and trade opportunities [2–4]. In the case of animals, when feeds are prepared with aflatoxin-contaminated crops,...
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Background
Antibiotic Growth Promotors (AGPs) are a group of feed additives widely used to improve animal health and performance. Mode of action is actually still an area of debate, but it is clear we have moved away from a simple model of reduction of pathogens / reduction of microbiota competition with the host animal to one where reduction of inflammation and modulation of immune response is a more likely explanation.
AGPs are effective in enhancing...
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Introduction With the expansion of the commercial broiler chicken industry, metabolic disorders have become emerging serious hazards in bird’s health and profitability (Savard et al., 2013). Fatty liver, among many other metabolic syndromes, has not received adequate attention in broiler research while it plays a significant role in the pathogenesis of many liver and kidney diseases and may directly cause low performance and a great economic loss (Zhang et...
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by Sam Shafer
A new study published in Poultry Science® shows that body weight, residual feed intake, and feeding behavior traits are all highly heritable traits in Pekin ducks. The research, led by scientists at China Agricultural University and Beijing Golden Star Inc., may help guide the selection for certain feeding behaviors and further help producers improve feed efficiency in their flocks.
Pekin ducks are the leading breed of duck used for meat...
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1. Introduction Poultry meat is considered a healthy source of high-quality protein, vitamins, minerals and essential polyunsaturated fatty acids (PUFAs), especially the omega (n)-3 fatty acids [1], and still remains one of the cheapest sources of protein [2]. The OECD-FAO agriculture outlook 2016–2025 forecasts an expansion of meat production by 1.8 Mt annually by 2025, mainly due to pork and poultry products [2]. Moreover, the poultry sector is possibly the fastest...
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