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Coccidiosis in poultry
Coccidiosis is a protozoal disease causing diarrhea, ,weight loss and decreased production in poultry. It can be fatal. Prevention is key and is achieved with use of anticoccidials or vaccination. Diagnosis is by fecal flotation to detect oocysts, often in combination with characteristic necropsy findings. Coccidiosis is caused by protozoa of the phylum Apicomplexa, family Eimeriidae. Most species affecting poultry belong to the genus Eimeria and infect various intestinal sites. The disease course is rapid (4–7 days) and is characterized by parasite replication in host cells with extensive damage to intestinal mucosa. Coccidia in poultry are generally host-specific, and the different species infect specific portions of the intestine. However, in game birds, including quail, the coccidia may infect the entire intestinal tract. In poultry, game birds reared in captivity, and wild birds, coccidiosis occurs worldwide.
1. Introduction Coccidiosis, caused by the protozoan parasite of the genus Eimeria, remains a significant threat to poultry health worldwide, leading to substantial economic losses [1]. The infection of coccidia presents multifaceted challenges to broiler health and productivity. Numerous studies have highlighted its detrimental effects on nutrient utilization, intestinal integrity, and the growth performance of birds [2–5]. On the other hand, previous research has also...
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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
Hector Salgado (Jefo Nutrition) presents his poster on alternatives to traditional anticoccidials, during the Symposium on Gut Health in St. Louis, USA....
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1. Introduction Coccidiosis is a significant poultry disease caused by single-celled protozoa of the genus Eimeria, including Eimeria acervulina, Eimeria brunetti, Eimeria maxima, Eimeria mitis, Eimeria necatrix, Eimeria praecox, Eimeria tenella, Eimeria lata, Eimeria nagambie, and Eimeria zaria, which are known to be the species responsible for coccidiosis in chickens (Gallus gallus domesticus) [1,2]. Among them, E. tenella and E. necatrix are recognized to be the most...
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Introduction Coccidiosis is a parasitic infection caused by Eimeria spp and persistently affecting broiler chicken, causing high morbidity, impaired growth, and mortality [1]. Unlike many other protozoan parasites, Eimeria spp exclusively invades the intestinal epithelium showing high tissue specificity [2]. Eimeria (E.) maxima is characterized by producing the largest oocysts and male gamonts among the other species infecting chicken [3]. E. maxima particularly infects chickens at...
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Dietary alfalfa may improve broiler growth, but fiber inclusion may be detrimental during coccidiosis challenge.
Alfalfa is a source of health-promoting bioactive compounds (phytochemicals) that may offer several benefits to the poultry industry by direct action or by influencing the microbial communities in chickens.
Iowa State University researchers recently examined the role late-cutting alfalfa — either as ground hay or a lipid-soluble extract — may have on...
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Changing Feed Industry Imperatives Call For A Closer Look At On-Site Aflatoxin Test Methods
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Enzymes have shown promising effects on performance and intestinal health in broilers (Toghyani et al., 2022). However, the dosage effect of enzymes and combination of different enzymes have not been extensively evaluated under the coccidial vaccine challenge condition. Therefore, a feeding study was conducted to examine the effect of dosage of xylanase+glucanase and the effect of its combination with a high level of phytase on growth performance, health, and welfare of broilers under a mild...
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Necrotic enteritis (NE) is often induced in broilers after getting infected with coccidiosis. However, not all sources of Eimeria, as a causative agent of coccidiosis, can successfully induce NE. This study was conducted to assess whether different doses of Eimeria combinations predispose broiler chickens to NE, compared with the NE challenge model used at UNE. A total of 768 d-old Cobb 500 broiler chicks were assigned to 48 floor pens each stocked with 16 birds replicated 6 times per...
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Coccidiosis is a disease with substantial economic impact (Muthamilselvan et al., 2016), particularly due to the push to ban anticoccidials. Vaccines are available but can be expensive, and are often implemented for free range and breeder flocks only. Thus, it is imperative to find effective nutritional alternatives to reduce the impact of coccidiosis on broiler chickens. The aim of this experiment was to determine if the nutritional strategies of post-pellet whole wheat (WW),...
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Greg Mathis (Southern Poultry Feed & Research) comments on how some companies have gone back to ionophores, while there is still a broad spectrum of options in the industry, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Organic selenium to reduce oxidative stress oxidative stress: Selsaf®3000
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Deependra Paneru (University of Georgia) speaks on how mycotoxins in the feed impact growth performance and impair the recovery of the pullets infected with coccidiosis, in this Engormix interview during IPPE 2024 in Atlanta, USA....
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Deependra Paneru (University of Georgia) An experiment was conducted to investigate the effects of subclinical mycotoxin exposure on the growth performance and immune cell dynamics in pullets exposed to coccidiosis. Using a 2x2 factorial design, a total of 288 four-week-old Hy-Line W36 pullets were randomly allocated to four treatment groups, each containing six replicated cages with 12 birds. The experimental groups were exposed to either...
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Vijay Durairaj (Huvepharma) Turkey coccidiosis is caused by Eimeria species. Seven Eimeria species are recognized in turkeys of which three are considered highly pathogenic and predominant. Objective: The objective of this presentation is to provide an overview of the pathological lesions of turkey coccidiosis for field vets, techs, supervisors, and turkey growers. Application of advanced molecular diagnostic tools, such as PCR and...
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Vijay Durairaj (Huvepharma) provides an overview of the pathological lesions of turkey coccidiosis, and comments on the application of advanced molecular diagnostic tools, such as PCR and sequencing, in this interview during IPPE 2024 in Atlanta, USA....
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Mohammed el Amine Benarbia (NOR-FEED) speaks on the characteristics of saponins and the results of his research presented at IPPE 2024 in Atlanta, USA....
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Héctor Leyva-Jiménez (United Animal Health) talks about a technology to process pathogen profiles to identify coinfections and help make better decisions on the farm, in this interview during IPPE 2024 in Atlanta, USA....
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Amine Benarbia (NOR-FEED) Eimeria spp. completes its life cycle within the host’s gastrointestinal tract. its reproduction has been known to damage enterocytes, leading to decreased growth performance and welfare in chickens. Controlling the reproduction cycle and limiting oocyst excretion could explain the observed efficacy of steroidal saponin-based standardized premixture -Norponin XO- (NPXO) supplementation in chicken. The objective of this...
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Coccidiosis is a disease caused by Eimeria spp. and causes a negative economic impact on the poultry industry, inducing global losses over 2.4 billion dollars annually (1). Specific Eimeria spp. identified in poultry includes E. acervulina, E. brunetti, E. maxima, E. necatrix, E. praecox, E. mitis, E. tenella, E. mivatti, and E. hagani (2). Eimeria spp. colonize in the intestine from duodenum to ceca, leading to inflammation, hemorrhaging, and diarrhea. Damaged intestine caused by...
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The objective of the study was to evaluate tryptophan’s functionally essential role in regulating performance, intestinal inflammation, and disease resistance during a coccidia challenge. A total of 300 two-day-old Cobb 500 broiler chickens (54.29 ± 0.284 g body weight [BW]) were group housed (5 chickens/pen; 10 pens/treatment) in battery brooders and had ad libitum access to a basal diet and water. At 7 d of age, pens were randomly assigned to 1 of 6 levels of dietary...
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INTRODUCTION Avian coccidiosis is one of the most common enteric diseases of poultry, and it is caused by several protozoan parasites of the genus Eimeria (1). The disease is characterized by reduced weight gain and feed conversion efficiency and is the most economically significant parasitic infection of the global poultry industry (2). Eimeria tenella is one of the seven most prevalent Eimeria species in chickens; it is the causative agent of cecal coccidiosis, causing severe...
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