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Bacterial diseases in poultry
Bacterial diseases comprise approximately half of the non–outbreak-related mortality in broiler breeders and commercial layers. During the first week of a broiler's life, approximately 50% of the mortality may be caused due to bacterial infections. Outbreaks due to bacterial infections may increase the mortality dramatically and in some cases almost eradicate flocks. E. coli and Gram-positive cocci infections are responsible for mortality and production losses in poultry of all age groups and all production systems and may be regarded as multifactorial. Subsequently, efforts in understanding and controlling these infections are highly important. Although necrotic enteritis is primarily a disease affecting young chickens, this infection is of major significance in any production system. Besides increased mortality, the production losses observed in subclinical infections may be dramatic.
As temperatures drop in fall and winter, respiratory diseases in poultry become more prevalent, creating serious challenges to the livestock industry. These diseases can lead to lower productivity, higher mortality rates, and increased costs for farmers. This article will explore the causes, symptoms, and treatment...
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Coccidiosis is a widespread parasitic disease that can seriously harm the livestock industry, especially affecting poultry and swine. This disease causes inflammation of the intestines, slower growth rates, and in severe cases, high mortality. In this article, we will discuss the causes, symptoms, and treatment options for...
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January 28, 2025
United States - Georgia - Atlanta
1. Introduction Poultry refers to avian species (e.g., Gallus gallus domesticus—chicken; Anas platyrhynchos domesticus—duck) housed in a diversity of production systems (e.g., organic, free-range and conventional structures) that are dedicated to the production of poultry products, specifically chicken meat and table eggs for human consumption and eggs hatching for reproduction [1,2]. Bacterial contamination in poultry can be initiated by ingestion of contaminated feed or...
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1. Introduction S. Infantis currently ranks among the top 10 serovars associated with human infections, standing as the fourth leading cause of salmonellosis cases in the EU [1]. Recent data from the European Food Safety Authority (EFSA) indicated that 95.6% of the Salmonella isolates in broiler flocks belong to the Infantis serovar, demonstrating a close association with poultry production [2]. In recent years, the increasing incidence of S. Infantis infections in both humans...
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Dear my colleagues I would be grateful if somebody tell me-
1- the advantage of mycoplasma gallisepticum ts-11 vaccine
2- its limitations
3-duration of immunity and when to count it from start of injection , onset of immunity or when the vaccine reach its peak
regard...
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1 Introduction The emergence of multi-resistant bacteria (MDR) to antibiotics represents one of the principal global threats to public health (Murray et al., 2022). The clinicians have been considered the use of the last therapeutics options, such as vancomycin, polymyxin B, carbapenems and colistin, with low rates of success (Wang et al., 2022; Yao et al., 2023). The infections by MDR are currently associated with considerable increase in morbidity and mortality of intensive...
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Life Cycle Assessment (LCA) Feed Solutions Increase Sustainability
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1. Introduction Antimicrobial resistance (AMR) is one of the main global threats today, and recent reports estimate that it directly caused 1.27 million deaths in 2019 [1]. In Brazil, the National Health Surveillance Agency, through the Evaluation of National Indicators of Health Care-Related Infections (HAIs) and Microbial Resistance (MR), in the year 2021, estimated that Escherichia coli resistance to different classes of beta-lactams can reach rates of 47.5% to cephalosporins,...
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1. Introduction Campylobacter is a virulent Gram-negative bacterial genus mainly found in the intestines of poultry [1], dogs, and cats [2]. These pathogens can cause bloody diarrhea, abdominal cramps, nausea, and vomiting. In more complex cases, they can cause Guillain–Barré syndrome and death [3]. Since its first recognition, several pathogenic species of Campylobacter that cause human campylobacteriosis have been cataloged using phylogenetic tools...
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Biosecurity may be defined as protection from pathogens or disease. This may include the separation of the flock from living vectors or inanimate objects called fomites. While prevention of host-specific and zoonotic diseases is important, the commercial poultry industry is already preoccupied with the challenges of day-to-day operations. The purpose of this project was to illustrate how surfaces that may seem clean are heavily contaminated with microorganisms that may be responsible for...
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Calier presents the authorization for broilers of its Primun Salmonella T vaccine against S. Typhimurium at the European Poultry Congress
In addition to the authorization for long-cycle poultry and broiler chickens, Primun Salmonella T also has a differential diagnosis of the vaccine strain by PCR
Calier has presented the authorization of its Primun Salmonella T vaccine for broilers before...
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Introduction Antimicrobial resistance (AR) is a worldwide concern. It is expected that deaths linked to AR could rise from 700,000 to 10 million deaths per year by 2050[1]. On the other hand, In developed countries, an estimated 23,000 (United States) to 25,000 (Europe) deaths are attributable to resistant pathogens each year [2]. In terms of economic loses, AR could cause a global loss of production as high as 100 trillion dollars which represents a huge impact on the economy...
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With this post, a general introduction to the disease, we start a series of articles about avian colibacillosis. Colibacilosis is one of the most common infectious bacterial diseases in the poultry industry and one of the main causes of economic loses. Such losses are caused by...
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Changing Feed Industry Imperatives Call For A Closer Look At On-Site Aflatoxin Test Methods
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Introduction Campylobacter is a gram-negative commensal bacterium in the gastrointestinal tract of multiple wild and domesticated animal species [1]. According to the Center for Disease Control and Prevention (CDC), Campylobacter is estimated to cause 1.3 million cases of human illness in the United States annually [2]. In 2019, Campylobacter was the leading cause of U.S. foodborne illness, with an overall incidence of 19.5 per 100,000 population [3]. The...
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1. Introduction Salmonella enterica is one of the main causes of foodborne disease, representing a worldwide problem for public health systems [1]. This species consists of more than 2600 serovars described to date [2,3]. S. enterica serovars can cause infections in humans ranging from gastroenteritis, associated with non-typhoidal Salmonella (NTS), to typhoid fever [4]. NTS are estimated to cause more than 93.8 million infections and 155,000 deaths per year globally [5,6]. The main...
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Introduction The emergence of antimicrobial resistance (AMR) in enteric bacteria of humans and animals is a global health threat that has decreased treatment efficacy and increased the cost of infections with antimicrobial-resistant bacteria [1, 2]. It is projected that by 2050 an estimated 10 million AMR-related infections will occur worldwide [3]. Surveillance systems play a critical role in the mitigation and containment of AMR by monitoring antimicrobial use (AMU) and...
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Spring has come to stay for a few months, everything is getting greener, and the environment is recovering from the harsh cold, but as optimistic as we are, we find spring to be a great moment for raising awareness of poultry’s most common diseases. Want to know some of them? 1. Coccidiosis Represented in poultry...
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Effect of Selected Yeast Fraction on The Growth of Clostridium Perfringens: Quantitative Determination of Growth Inhibition and Adsorption Capacity
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Evan Chaney (Cargill) speaks on colibacillosis, as well as the benefits of a postbiotic developed as a solution, in this interview during IPPE 2024 in Atlanta, USA....
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Introduction Nepal’s poultry industry has seen a significant and rapid growth in the last decade, contributing more than 4% to the national gross domestic product (GDP) [1, 2]. Majority of the poultry products are supplied by numerous commercial farms (54% of total poultry production) scattered throughout the country. Backyard poultry also accounts for significant proportion of the total poultry production (46%); poultry meat and eggs are an easy source for protein and...
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Histomonas meleagridis and Escherichia coli exhibit an outstanding interplay in vitro and are well recognized pathogens in poultry causing histomonosis and colibacillosis, respectively. H. meleagridis and E. coli reside in the intestine of birds, thus, to understand their interaction in vivo, gut microbial changes and caecal wall penetration of E. coli were investigated separately in experimentally infected chickens and turkeys (Abdelhamid et al., 2020, 2021). In the first trial, commercial...
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Escherichia coli resides as a gut commensal in healthy chickens but also causes the extraintestinal disease called colibacillosis. Pathotype definition is primarily based on the clinical condition of the host, but it is still not definite due to the lack of genetic traits to differentiate between commensal and harmful isolates, which has led to divided views with regard to the pathogenicity of E. coli in poultry. In this study, embryos and chickens were experimentally infected with E. coli...
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