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Rahmani A, Ahmed Laloui H, Kara R, Dems MA, Cherb N, Klikha A, Blake DP. The financial cost of coccidiosis in Algerian chicken production: a major challenge for the poultry sector. Avian Pathol 2024; 53:368-379. [PMID: 38529824 DOI: 10.1080/03079457.2024.2336091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/22/2024] [Accepted: 03/25/2024] [Indexed: 03/27/2024]
Abstract
Coccidiosis, caused by parasites of the genus Eimeria, is a significant economic burden to the poultry industry. In this study, we conducted a comprehensive analysis to evaluate the financial losses associated with Eimeria infection in chickens in Algeria, relying on data provided by key stakeholders in the Algerian poultry industry to assess sub-clinical as well as clinical impact. We employed the updated 2020 version of a model established to estimate the cost of coccidiosis in chickens, taking into consideration specific cultural and technical aspects of poultry farming in Algeria. The findings predict economic losses due to coccidiosis in chickens of approximately £86.7 million in Algeria for the year 2022, representing £0.30 per chicken raised. The majority of the cost was attributed to morbidity (74.9%), emphasizing the substantial economic impact of reduced productivity including decreased bodyweight gain and increased feed conversion ratio. Costs associated with control measures made up 20.5% of the total calculated cost, with 4.6% of the cost related to mortality. These figures provide a clear indication of the scope and economic impact of Eimeria infection of chickens in Algeria, illustrating the impact of practices common across North Africa. They underscore the ongoing requirement for effective preventive and control measures to reduce these financial losses while improving productivity and welfare, ensuring the economic sustainability of the Algerian poultry industry.
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Affiliation(s)
- Abderrahmen Rahmani
- Animal Production Team, Biotechnology and Agriculture Division; Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
| | - Hamza Ahmed Laloui
- Animal Production Team, Biotechnology and Agriculture Division; Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
| | | | - Mohamed Abdesselem Dems
- Bio-informatics and Bio-statistics Unit (BIBS-U); Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
| | - Nora Cherb
- Environment Biotechnology Division; Biotechnology Research Center; Ali Mendjli, Constantine, Algeria
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Zhao D, Suo J, Liang L, Liang R, Zhou R, Ding J, Liu X, Suo X, Zhang S, Tang X. Innovative prevention and control of coccidiosis: targeting sporogony for new control agent development. Poult Sci 2024; 103:104246. [PMID: 39260244 PMCID: PMC11416347 DOI: 10.1016/j.psj.2024.104246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 08/09/2024] [Accepted: 08/18/2024] [Indexed: 09/13/2024] Open
Abstract
Coccidiosis is one of the most significant diseases affecting the poultry industry, with recent estimates indicating that it causes annual losses exceeding £10 billion globally. Increasing concerns over drug residues and resistance have elevated the importance of safe and effective vaccines as the primary method for controlling coccidiosis and other animal diseases. However, current commercial live vaccines for coccidiosis can negatively impact the feed conversion rates of young broilers and induce subclinical symptoms of coccidiosis, limiting their widespread adoption. Eimeria species, the causative agents of coccidiosis, exhibit unique biological characteristics. Their life cycle involves 2 or more generations of schizogony and 1 generation of gametogony within the host, followed by sporogony in a suitable external environment. Sporogony is crucial for Eimeria oocysts to become infectious and propagate within the host. Focusing on the sporogony process of Eimeria presents a promising approach to overcoming technical challenges in the efficient control of coccidiosis, addressing the urgent need for sustainable and healthy farming practices. This paper systematically reviews existing control strategies for coccidiosis, identifies current challenges, and emphasizes the research progress and future directions in developing control agents targeting sporogony. The goal is to provide guidance for the formulation of scientific prevention and control measures for coccidiosis.
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Affiliation(s)
- Dan Zhao
- Key Laboratory of Animal Biosafety Risk Prevention and Control (North) & Key Laboratory of Veterinary Biological Products and Chemical Drugs of MARA, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Jingxia Suo
- National Key Laboratory of Veterinary Public Health Security, Key Laboratory of Animal Epidemiology of the MARA, National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Lin Liang
- Key Laboratory of Animal Biosafety Risk Prevention and Control (North) & Key Laboratory of Veterinary Biological Products and Chemical Drugs of MARA, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ruiying Liang
- Key Laboratory of Animal Biosafety Risk Prevention and Control (North) & Key Laboratory of Veterinary Biological Products and Chemical Drugs of MARA, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Rongqiong Zhou
- College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Jiabo Ding
- Key Laboratory of Animal Biosafety Risk Prevention and Control (North) & Key Laboratory of Veterinary Biological Products and Chemical Drugs of MARA, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xianyong Liu
- National Key Laboratory of Veterinary Public Health Security, Key Laboratory of Animal Epidemiology of the MARA, National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Xun Suo
- National Key Laboratory of Veterinary Public Health Security, Key Laboratory of Animal Epidemiology of the MARA, National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Sixin Zhang
- College of Veterinary Medicine, Southwest University, Chongqing, 400715, China
| | - Xinming Tang
- Key Laboratory of Animal Biosafety Risk Prevention and Control (North) & Key Laboratory of Veterinary Biological Products and Chemical Drugs of MARA, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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Gómez-Osorio LM, Vasiljevic M, Raj J, Chaparro-Gutierréz JJ, López-Osorio S. Mycotoxins and coccidiosis in poultry - co-occurrence, interaction, and effects. Front Vet Sci 2024; 11:1387856. [PMID: 39149147 PMCID: PMC11326241 DOI: 10.3389/fvets.2024.1387856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 07/22/2024] [Indexed: 08/17/2024] Open
Abstract
Avian coccidiosis, a common disease caused by Eimeria species, results in significant losses in global poultry production. Mycotoxins are low-molecular-weight natural products (i.e., small molecules) produced as secondary metabolites by filamentous fungi and they have the potential to economically and significantly affect global poultry production. Little is known about the relationship between mycotoxins and avian coccidiosis, although they often co-occur in the field. This comprehensive review examines the intricate relationship between mycotoxins and avian coccidiosis, in particular how mycotoxins, including aflatoxins, ochratoxins, trichothecenes as well as Fusarium mycotoxins, compromise the health of the poultry flock and open the door to Eimeria parasites in the gut. In addition, this review sheds light on the immunosuppressive effects of mycotoxins, their disruption of cellular signaling pathways, and the consequent exacerbation of coccidiosis infections. The mechanisms of mycotoxin toxicity are also reviewed, emphasizing direct damage to intestinal epithelial cells, impaired nutrient absorption, inflammation, oxidative stress, and changes in the gut microbiota. Finally, the consequences for the prevention and treatment of coccidiosis when mycotoxins are present in the feed are discussed. This review emphasizes the need for effective management strategies to mitigate the combined risks of mycotoxins and coccidiosis and highlights the complexity of diagnosing and controlling these interrelated problems in poultry. The review advocates a holistic approach that includes strict feed management, disease prevention measures and regular monitoring to maintain the health and productivity of poultry against these significant challenges.
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Affiliation(s)
- Luis-Miguel Gómez-Osorio
- CIBAV Research Group, Facultad de Ciencias Agrarias, Universidad de Antioquia, UdeA, Medellín, Colombia
- Patent Co., DOO., Mišićevo, Serbia
| | | | - Jog Raj
- Patent Co., DOO., Mišićevo, Serbia
| | | | - Sara López-Osorio
- CIBAV Research Group, Facultad de Ciencias Agrarias, Universidad de Antioquia, UdeA, Medellín, Colombia
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Taylor J, Mercier Y, Olukosi OA, Kim WK, Selvaraj R, Applegate TJ, Shanmugasundaram R, Ball MEE, Kyriazakis I. Supplementing low protein diets with methionine or threonine during mixed Eimeria challenge. Poult Sci 2024; 103:103714. [PMID: 38636202 PMCID: PMC11031750 DOI: 10.1016/j.psj.2024.103714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/26/2024] [Accepted: 03/30/2024] [Indexed: 04/20/2024] Open
Abstract
We investigated the effects of supplementing low protein diets with methionine (Met) or threonine (Thr) during a mixed Eimeria (consisting of E. acervulina, E. maxima and E. tenella) challenge in broilers. All birds were fed the same starter diet (d1-9) and finisher diet (d28-35) which met Cobb 500 nutrient specifications. Birds were allocated to 1 of 4 dietary treatments from d9 to 28: a standard protein diet (19% CP); a low protein diet (16% CP); or the low protein diet supplemented with Met or Thr at 50% above recommendations. On d14, half of the birds were challenged, and half of the birds were unchallenged. From d14 to 28, feed intake was recorded daily and BW every 3 or 4 d. Oocyst excretion was measured daily from d18 to 27. On d21 and 28, 3 birds per pen were euthanized to assess nutrient digestibility, cytokine expression and intestinal histology. During the acute stage of the challenge, challenged birds reduced ADFI and ADG (P < 0.05). In the pre-patent and recovery stages, birds given the 16% CP diets increased ADFI (P < 0.05), meanwhile there were no differences in ADG in these stages (P > 0.05). Nutrient digestibility was reduced in challenged birds in the acute stage (P < 0.05) but tended to be greater than in unchallenged birds during the recovery stage. There was no significant effect of diet on oocyst excretion or intestinal histology (P > 0.05). Interactions were observed between diet and challenge on IL-10 and IL-21 expression in the cecal tonsils during the acute stage of the challenge (P < 0.05), due to reduced IL-10 expression in challenged Thr birds and greater IL-21 expression in challenged Met birds. Supplementation with Thr or Met had limited effects on the outcomes of a mixed Eimeria challenge but provides benefits to the host by enhancing their immune response.
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Affiliation(s)
- James Taylor
- Agri-Food & Biosciences Institute (AFBI), Belfast, BT9 5PX, United Kingdom; Institute for Global Food Security, Queen's University, Belfast, BT9 5DL, United Kingdom.
| | | | - Oluyinka A Olukosi
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Woo K Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Ramesh Selvaraj
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Todd J Applegate
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Revathi Shanmugasundaram
- Toxicology and Mycotoxin Research Unit, USDA-ARS, US National Poultry Research Centre, Athens, GA 30605, USA
| | - M Elizabeth E Ball
- Agri-Food & Biosciences Institute (AFBI), Belfast, BT9 5PX, United Kingdom
| | - Ilias Kyriazakis
- Institute for Global Food Security, Queen's University, Belfast, BT9 5DL, United Kingdom
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Abdel-Gaber R, Alamari G, Dkhil MA, Meryk A, Al-Shaebi EM, Al-Quraishy S. Krameria lappacea root extract's anticoccidial properties and coordinated control of CD4 T cells for IL-10 production and antioxidant monitoring. Front Immunol 2024; 15:1404297. [PMID: 38751432 PMCID: PMC11094240 DOI: 10.3389/fimmu.2024.1404297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 04/18/2024] [Indexed: 05/18/2024] Open
Abstract
Introduction Recently, the use of botanicals as an alternative to coccidiostats has been an appealing approach for controlling coccidiosis. Therefore, this study was conducted to evaluate the potential role of aqueous methanolic extract (200 mg/kg) of Krameria lappacea (roots) (KLRE) against infection induced by Eimeria papillata. Methods A total of 25 male C57BL/6 mice were divided into five groups (I, II, III, IV, and V). On 1st day of the experiment, all groups except groups I (control) and II (non-infected-treated group with KLRE), were inoculated orally with 103 sporulated E. papillata oocysts. On the day of infection, group IV was treated with KLRE. Group V served as an infected-treated group and was treated with amprolium (coccidiostat). Results Treatment with extract and coccidiostat was continued for five consecutive days. While not reaching the efficacy level of the reference drug (amprolium), KLRE exhibited notable anticoccidial activity as assessed by key criteria, including oocyst suppression rate, total parasitic stages, and maintenance of nutrient homeostasis. The presence of phenolic and flavonoid compounds in KLRE is thought to be responsible for its positive effects. The Eimeria infection increased the oxidative damage in the jejunum. KLRE treatment significantly increased the activity of catalase and superoxide dismutase. On the contrary, KLRE decreased the level of malondialdehyde and nitric oxide. Moreover, KLRE treatment decreased macrophage infiltration in the mice jejunal tissue, as well as the extent of CD4 T cells and NFkB. E. papillata caused a state of systemic inflammatory response as revealed by the upregulation of inducible nitric oxide synthase (iNOs)-mRNA. Upon treatment with KLRE, the activity of iNOs was reduced from 3.63 to 1.46 fold. Moreover, KLRE was able to downregulate the expression of pro-inflammatory cytokines interferon-γ, nuclear factor kappa B, and interleukin-10 -mRNA by 1.63, 1.64, and 1.38 fold, respectively. Moreover, KLRE showed a significant reduction in the expression of IL-10 protein level from 104.27 ± 8.41 pg/ml to 62.18 ± 3.63 pg/ml. Conclusion Collectively, K. lappacea is a promising herbal medicine that could ameliorate the oxidative stress and inflammation of jejunum, induced by E. papillata infection in mice.
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Affiliation(s)
- Rewaida Abdel-Gaber
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ghada Alamari
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed A. Dkhil
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
- Applied Science Research Center, Applied Science Private University, Amman, Jordan
| | - Andreas Meryk
- Department of Pediatrics, Medical University of Innsbruck, Innsbruck, Austria
| | - Esam M. Al-Shaebi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saleh Al-Quraishy
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Liang S, Zhu S, Wang Q, Zhao Q, Dong H, Huang B, Yu Y, Han H. Eimeria tenella pyrroline -5-carboxylate reductase is a secreted protein and involved in host cell invasion. Exp Parasitol 2024; 259:108712. [PMID: 38336093 DOI: 10.1016/j.exppara.2024.108712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/27/2023] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
Chicken coccidiosis, which caused by Eimeria spp, is a parasitic protozoal disease. At present, control measures of this disease depend mainly on anticoccidial drugs and live vaccines. But these control strategies have drawbacks such as drug resistance and limitations in live vaccines production. Therefore, novel control approaches are urgently need to study to control this disease effectively. In this study, the function and characteristics of the pyrroline-5-carboxylate reductase of Eimeria tenella (EtPYCR) protein were preliminary analyzed. The transcription and translation level were analyzed by using qPCR and Western blot. The results showed that the mRNA transcription and translation levels of EtPYCR were higher in unsporulated oocysts (UO) and second generation merozoites (Mrz) than that in sporulated oocysts (SO) and sporozoites. Enzyme activity showed that the enzyme activity of EtPYCR was also higher in the UO and Mrz than that in the SO and sporozoites. Immunofluorescence localization showed EtPYCR was mainly located on the top of sporozoites and the whole cytoplasm and surface of Mrz. The secretion assay indicated that EtPYCR was secretion protein, but not from micronemes. Invasion inhibition assay showed that rabbit anti-rEtPYCR polyclonal antibodies can effectively inhibit sporozoite invasion of DF-1 cells. These results showed that EtPYCR possess several important roles that separate and distinct from its conversion 1-pyrroline-5-carboxylate (P5C) into proline and maybe involved in the host cell invasion and development of parasites in host cells.
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Affiliation(s)
- Shanshan Liang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China; Tangshan Food and Drug Comprehensive Testing Center, Tangshan, 063000, China
| | - Shunhai Zhu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China
| | - Qingjie Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China; Shaanxi Center for Animal Disease Control and Prevention, Xian, 710016, China
| | - Qiping Zhao
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China
| | - Hui Dong
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China
| | - Bing Huang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China
| | - Yu Yu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China
| | - Hongyu Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai, 200241, China.
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Hassan SMH, Zayeda R, Elakany H, Badr S, Abou-Rawash A, Abd-Ellatieff H. Anticoccidial activity of Aloe Vera Leafs' aqueous extract and vaccination against Eimeria tenella: pathological study in broilers. Vet Res Commun 2024; 48:403-416. [PMID: 37736869 PMCID: PMC10811142 DOI: 10.1007/s11259-023-10222-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/16/2023] [Indexed: 09/23/2023]
Abstract
This study aimed to assess the efficacy of an anticoccidial vaccine and the anticoccidial activity of Aloe vera in broiler chickens infected with Eimeria tenella (E. tenella). A total of 225 healthy, sexless, one-day-old broiler chicks (avian48) from a commercial broiler company were randomized into nine experimental groups of 25 chicks. The groups were as follows: Group 1 (control, vaccinated, non-infected), Group 2 (vaccinated and infected with 5 × 104 sporulated oocysts), Group 3 (vaccinated, infected with 5 × 104 sporulated oocysts, and treated with Aloe vera), Group 4 (infected with 5 × 104 sporulated oocysts and treated with Aloe vera), Group 5 (positive control, infected with 5 × 104 sporulated oocysts), Group 6 (challenged with 5 × 104 sporulated oocysts and then treated with amprolium), Group 7 (treated with amprolium), Group 8 (blank control negative group), and Group 9 (treated with Aloe vera gel).Various parameters were evaluated, including clinical signs, growth performance, oocyst shedding, hematological and immunological parameters, and pathological lesion scoring. The results demonstrated that Aloe vera improved growth performance, reduced oocyst shedding, and decreased caecal lesion scores in E. Tenella-infected broiler chicks. The use of Aloe vera in combination with either amprolium or anticoccidial vaccines provided a potential solution to the issues of drug resistance and drug residues.In conclusion, this study provides valuable insights regarding the control of coccidiosis in broilers. Supplementing the chicken diet with Aloe vera had beneficial effects on the pathogenicity and infectivity of E. tenella, making it a cost-effective alternative as an herbal extract with no adverse side effects for coccidiosis control. These findings suggest that Aloe vera can be considered a potential candidate for inclusion in broiler diets for effective coccidiosis control.
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Affiliation(s)
- Shahenaz M H Hassan
- Alexandria Regional Laboratory, Animal Health Research Institute, Agriculture Research Center, Alexandria City, Egypt
| | - Rasha Zayeda
- Animal Health Research Institute, Tanta Regional Laboratory, Tanta City, Egypt
| | - H Elakany
- Department of Poultry and Fish diseases, Faculty of Veterinary Medicine, Damanhour University, Damanhour City, Egypt
| | - Sohair Badr
- Pathology Department, Animal Health Research Institute Agriculture Research Center, Cairo City, Egypt
| | - A Abou-Rawash
- Department of Pathology, Faculty of Veterinary Medicine, Damanhour University, Damanhour Cty, 25511, Egypt.
| | - Hoda Abd-Ellatieff
- Department of Pathology, Faculty of Veterinary Medicine, Damanhour University, Damanhour Cty, 25511, Egypt
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Ahmad R, Yu YH, Hua KF, Chen WJ, Zaborski D, Dybus A, Hsiao FSH, Cheng YH. Management and control of coccidiosis in poultry - A review. Anim Biosci 2024; 37:1-15. [PMID: 37641827 PMCID: PMC10766461 DOI: 10.5713/ab.23.0189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/13/2023] [Accepted: 08/12/2023] [Indexed: 08/31/2023] Open
Abstract
Poultry coccidiosis is an intestinal infection caused by an intracellular parasitic protozoan of the genus Eimeria. Coccidia-induced gastrointestinal inflammation results in large economic losses, hence finding methods to decrease its prevalence is critical for industry participants and academic researchers. It has been demonstrated that coccidiosis can be effectively controlled and managed by employing anticoccidial chemical compounds. However, as a result of their extensive use, anticoccidial drug resistance in Eimeria species has raised concerns. Phytochemical/herbal medicines (Artemisia annua, Bidens pilosa, and garlic) seem to be a promising strategy for preventing coccidiosis, in accordance with the "anticoccidial chemical-free" standards. The impact of herbal supplements on poultry coccidiosis is based on the reduction of oocyst output by preventing the proliferation and growth of Eimeria species in chicken gastrointestinal tissues and lowering intestinal permeability via increased epithelial turnover. This review provides a thorough up-to-date assessment of the state of the art and technologies in the prevention and treatment of coccidiosis in chickens, including the most used phytochemical medications, their mode of action, and the applicable legal framework in the European Union.
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Affiliation(s)
- Rafiq Ahmad
- Department of Biotechnology and Animal Science, National Ilan University, Yilan 26047,
Taiwan
| | - Yu-Hsiang Yu
- Department of Biotechnology and Animal Science, National Ilan University, Yilan 26047,
Taiwan
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Yilan 26047,
Taiwan
| | - Wei-Jung Chen
- Department of Biotechnology and Animal Science, National Ilan University, Yilan 26047,
Taiwan
| | - Daniel Zaborski
- Department of Ruminants Science, West Pomeranian University of Technology, Klemensa Janickiego 29, 71-270 Szczecin,
Poland
| | - Andrzej Dybus
- Department of Genetics, West Pomeranian University of Technology, 70-310 Szczecin,
Poland
| | - Felix Shih-Hsiang Hsiao
- Department of Biotechnology and Animal Science, National Ilan University, Yilan 26047,
Taiwan
| | - Yeong-Hsiang Cheng
- Department of Biotechnology and Animal Science, National Ilan University, Yilan 26047,
Taiwan
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Abstract
The complexity of parasites and their life cycles makes vaccination against parasitic diseases challenging. This review highlights this by discussing vaccination against four relevant parasites of poultry. Coccidia, i.e., Eimeria spp., are the most important parasites in poultry production, causing multiple billions of dollars of damage worldwide. Due to the trend of antibiotic-free broiler production, use of anticoccidia vaccines in broilers is becoming much more important. As of now, only live vaccines are on the market, almost all of which must be produced in birds. In addition, these live vaccines require extra care in the management of flocks to provide adequate protection and prevent the vaccines from causing damage. Considerable efforts to develop recombinant vaccines and related work to understand the immune response against coccidia have not yet resulted in an alternative. Leucozytozoon caulleryi is a blood parasite that is prevalent in East and South Asia. It is the only poultry parasite for which a recombinant vaccine has been developed and brought to market. Histomonas meleagridis causes typhlohepatitis in chickens and turkeys. The systemic immune response after intramuscular vaccination with inactivated parasites is not protective. The parasite can be grown and attenuated in vitro, but only together with bacteria. This and the necessary intracloacal application make the use of live vaccines difficult. So far, there have been no attempts to develop a recombinant vaccine against H. meleagridis. Inactivated vaccines inducing antibodies against the poultry red mite Dermanyssus gallinae have the potential to control infestations with this parasite. Potential antigens for recombinant vaccines have been identified, but the use of whole-mite extracts yields superior results. In conclusion, while every parasite is unique, development of vaccines against them shares common problems, namely the difficulties of propagating them in vitro and the identification of protective antigens that might be used in recombinant vaccines.
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Affiliation(s)
- Ruediger Hauck
- Department of Pathobiology, Auburn University, Auburn, AL 36849,
- Department of Poultry Science, Auburn University, Auburn, AL 36849
| | - Kenneth S Macklin
- Department of Poultry Science, Mississippi State University, Mississippi State, MS 39762
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Mi Y, Ding W, Xu L, Lu M, Yan R, Li X, Song X. Protective Efficacy Induced by the Common Eimeria Antigen Elongation Factor 2 against Challenge with Three Eimeria Species in Chickens. Vaccines (Basel) 2023; 12:18. [PMID: 38250831 PMCID: PMC10819859 DOI: 10.3390/vaccines12010018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024] Open
Abstract
Avian coccidiosis arises from co-infection involving multiple Eimeria species, which could give rise to substantial economic losses in the global poultry industry. As a result, multivalent anticoccidial vaccines containing common Eimeria antigens offer considerable promise for controlling co-infection in clinical practice. In our previous study, Elongation factor 2 (EF2) was deemed as an immunogenic common antigen across various Eimeria species. This current investigation aimed to further assess the immunogenicity and protective efficacy of EF2 in recombinant subunit vaccine format against three Eimeria species. The EF2 gene cloned from Eimeria maxima (E. maxima) cDNA was designated as EF2 of E. maxima (EmEF2). The immunogenicity of the recombinant protein EmEF2 (rEmEF2) was assessed through Western blot analysis. The evaluation of the vaccine-induced immune response encompassed the determination of T lymphocyte subset proportions, cytokine mRNA transcription levels, and specific IgY concentrations in rEmEF2-vaccinated chickens using flow cytometry, quantitative real-time PCR (qPCR), and indirect enzyme-linked immunosorbent assay (ELISA). Subsequently, the protective efficacy of rEmEF2 was evaluated through vaccination and challenge experiments. The findings demonstrated that rEmEF2 was effectively recognized by the His-tag monoclonal antibody and E. maxima chicken antiserum. Vaccination with rEmEF2 increased the proportions of CD4+ and CD8+ T lymphocytes, elevated IL-4 and IFN-γ mRNA transcription levels, and enhanced IgY antibody levels compared to the control groups. Moreover, compared to the control groups, vaccination with rEmEF2 led to decreased weight loss, reduced oocyst outputs, and alleviated enteric lesions. Furthermore, in the rEmEF2-immunized groups, challenges with E. maxima and E. acervulina resulted in anticoccidial index (ACI) scores of 166.35 and 185.08, showing moderate-to-excellent protective efficacy. Nevertheless, challenges with E. tenella and mixed Eimeria resulted in ACI scores of 144.01 and 127.94, showing low protective efficacy. In conclusion, EmEF2, a common antigen across Eimeria species, demonstrated the capacity to induce a significant cellular and humoral immune response, as well as partial protection against E. maxima, E. acervulina, and E. tenella. These results highlight EmEF2 as a promising candidate antigen for the development of multivalent vaccines targeting mixed infections by Eimeria species.
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Affiliation(s)
| | | | | | | | | | | | - Xiaokai Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; (Y.M.); (W.D.); (L.X.); (M.L.); (R.Y.); (X.L.)
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11
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Liu Q, Liu X, Zhao X, Zhu XQ, Suo X. Live attenuated anticoccidial vaccines for chickens. Trends Parasitol 2023; 39:1087-1099. [PMID: 37770352 DOI: 10.1016/j.pt.2023.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/30/2023] [Accepted: 09/03/2023] [Indexed: 09/30/2023]
Abstract
Chicken coccidiosis, caused by infection with single or multiple Eimeria species, results in significant economic losses to the global poultry industry. Over the past decades, considerable efforts have been made to generate attenuated Eimeria strains, and the use of live attenuated anticoccidial vaccines for disease prevention has achieved tremendous success. In this review, we evaluate the advantages and limitations of the methods of attenuation as well as attenuated Eimeria strains in a historical perspective. Also, we summarize the recent exciting research advances in transient/stable transfection systems and clustered regularly interspaced short palindromic repeats (CRISPR)-based genome editing developed for Eimeria parasites, and discuss trends and challenges of developing live attenuated anticoccidial vaccines based on transgenesis and genome editing.
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Affiliation(s)
- Qing Liu
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi Province 030801, PR China
| | - Xianyong Liu
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture and Rural Affairs, National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing 100093, PR China
| | - Xiaomin Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong Province 271018, PR China
| | - Xing-Quan Zhu
- Laboratory of Parasitic Diseases, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi Province 030801, PR China.
| | - Xun Suo
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture and Rural Affairs, National Animal Protozoa Laboratory & College of Veterinary Medicine, China Agricultural University, Beijing 100093, PR China.
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12
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Zhou X, Wang L, Wang Z, Zhu P, Chen Y, Yu C, Chen S, Xie Y. Impacts of Eimeria coinfection on growth performance, intestinal health and immune responses of broiler chickens. Vet Parasitol 2023; 322:110019. [PMID: 37666058 DOI: 10.1016/j.vetpar.2023.110019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/16/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023]
Abstract
Coccidiosis caused by Eimeria is one of the most severe chicken diseases and imposes huge economic losses to the poultry industry globally. Multi-Eimeria species coinfections are common with the most prevalent combination being mixtures of Eimeria acervulina and Eimeria tenella. Although detrimental impacts of either E. acervulina or E. tenella on chicken health are well recognized, no information is available regarding their coinfection effects so far. This study was designed to investigate the influence of coinfection with E. acervulina and E. tenella on broiler chickens. 144 one-day-old broiler chickens within each of trials (trial I or II) were divided into four groups, namely, control group (CG), E. acervulina infection group (EAIG), E. tenella infection group (ETIG) and dual (E. acervulina and E. tenella) infection group (DIG). Then, chickens were measured for weight loss, lesion scores, oocyst outputs, histological changes and expressions of pro-inflammatory (interleukin [IL]-6, IL-8 and IL-18), regulatory (IL-10 and IL-22) cytokines and Toll-like receptors (TLR; TLR2 and TLR4) as well as intestinal barrier (mucin 2 [MUC2] and fattey acid-bingding proteins 2 and 6 [FABP2 and FABP6])- and tight junction (TJ; zonula occluden-1 [ZO-1], occludin [OCLN], and claudins 1 and 5 [CLDN1 and CLDN5])-related proteins at 3, 5, 7, 10, 14 and 21 days post-infection, respectively. Our results consistently showed that although ETIG and DIG exhibited a higher level of weight loss and a more amount of oocyst excretion than EAIG, DIG had lighter lesions than EAIG in the early phase because of coinfection with E. tenella. A higher (P < 0.05) ratio of duodenal villous height to crypt depth was also observed in DIG than EAIG. Moreover, histological changes in the duodenum and cecum varied by single and dual Eimeria infections. Expressions of the intestinal barrier- and TJ-related genes of EAIG, ETIG and DIG were significantly (P < 0.05) upregulated but their levels exhibited differential changes among infected chickens. Similarly, the infected chickens showed significant (P < 0.05) inflammatory responses and higher (P < 0.05) expressions of TLRs in the intestines in comparison to CG. These results presented a comprehensive physiological, pathological and immunological characterization of E. acervulina and E. tenella coinfection in broiler chickens and also shed insights into pathogenesis of multi-coccidia coinfections.
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Affiliation(s)
- Xuan Zhou
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Lidan Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhao Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Pengchen Zhu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yijun Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Chunlin Yu
- Sichuan Animal Science Academy, Chengdu 610065, China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yue Xie
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
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13
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Felici M, Tugnoli B, Ghiselli F, Baldo D, Ratti C, Piva A, Grilli E. Investigating the effects of essential oils and pure botanical compounds against Eimeria tenella in vitro. Poult Sci 2023; 102:102898. [PMID: 37573847 PMCID: PMC10448326 DOI: 10.1016/j.psj.2023.102898] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/18/2023] [Accepted: 06/24/2023] [Indexed: 08/15/2023] Open
Abstract
Essential oils (EO) and natural bioactive compounds are well-known antibacterial and anti-inflammatory factors; however, little is known about their anticoccidial activity and mode of action. EO deriving from basil (BEO), garlic (GAR), oregano (OEO), thyme (TEO), and their main bioactive compounds were investigated for their anticoccidial proprieties and compared to salinomycin (SAL) and amprolium (AMP) in vitro. The invasion of Eimeria tenella sporozoites was studied on 2 cell models: Madin-Darby Bovine Kidney (MDBK) cells and primary chicken epithelial cells (cIEC). Invasion efficiency was evaluated at 2 and 24 h postinfection (hpi) with counts of extracellular sporozoites and by detection of intracellular E. tenella DNA by PCR. Results show that at both timepoints, the EO were most effective in preventing the invasion of E. tenella with an average reduction of invasion at 24 hpi by 36% in cIEC and 55% in MDBK. The study also examined cytokine gene expression in cIEC at 24 hpi and found that AMP, BEO, OEO, TEO, carvacrol (CAR), and thymol (THY) significantly reduced interleukin (IL)8 expression, with CAR also reducing expression of IL1β and IL6 compared to the infected control. In addition, this work investigated the morphology of E. tenella sporozoites treated with anticoccidial drugs and EO using a scanning electron microscope. All the treatments induced morphological anomalies, characterized by a reduction of area, perimeter and length of sporozoites. SAL had a significant impact on altering sporozoite shape only at 24 h, whereas CAR and THY significantly compromised the morphology already at 2 hpi, compared to the untreated control. OEO and GAR showed the most significant alterations among all the treatments. The findings of this study highlight the potential of EO as an alternative to traditional anticoccidial drugs in controlling E. tenella invasion and in modulating primary immune response.
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Affiliation(s)
| | | | | | - David Baldo
- DISTAL, University of Bologna, Bologna, Italy
| | | | - Andrea Piva
- DIMEVET, University of Bologna, Bologna, Italy; Vetagro S.p.A., Reggio Emilia, Italy
| | - Ester Grilli
- DIMEVET, University of Bologna, Bologna, Italy; Vetagro Inc., Chicago, IL 60603, USA.
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14
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de Oliveira Moraes P, da Silva Pires PG, Benetti Filho V, Lima ALF, Kindlein L, Taschetto D, Favero A, Wagner G. Intestinal health of broilers challenged with Eimeria spp. using functional oil blends in two physical forms with or without anticoccidials. Sci Rep 2023; 13:14612. [PMID: 37670021 PMCID: PMC10480430 DOI: 10.1038/s41598-023-41743-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 08/30/2023] [Indexed: 09/07/2023] Open
Abstract
This study aimed to assess the impact of a commercial blend of functional oils, specifically cashew nutshell liquid and castor oil (FO), in two physical forms (solid: P; liquid: S), in comparison to a combination of virginiamycin and anticoccidials on the gut health of broilers challenged with coccidiosis. A total of 1760 1-day-old male chicks were randomly distributed in a study design with eight treatments. The treatments included: a control group (without additive), OFS_0.75_kg/t (FO spray), OFP_1.0_kg/t (FO powder), OFP_1.5_kg/t (FO liquid spray), Sal (anticoccidials), Sal_Vir (virginiamycin and anticoccidials), Sal_OFS_0.5_ kg/t (anticoccidials plus FO spray), and Sal_OFP_1.0_kg/t (anticoccidials plus FO powder). All birds were challenged with Eimeria spp. at 14 days. The physical form of FO did not affect performance and intestinal health parameters. At 42 days, broilers from the control and OFS_0.75 treatments were the lightest, while those from the Sal_Vir and Sal_OFP_1.0 treatments were the heaviest (P < 0.05). FO reduced the presence of Clostridium perfringens. The individual phytogenic additives did not prevent weight loss in birds challenged with Eimeria, but they mitigated the effects of the infection by modulating the intestinal microbiota. A synergistic effect was observed between the FO and anticoccidials, yielding satisfactory results in substituting virginiamycin.
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Affiliation(s)
- Priscila de Oliveira Moraes
- Department of Animal Science and Rural Development, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil.
| | | | - Vilmar Benetti Filho
- Laboratory of Bioinformatics, Center of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - André Luís Ferreira Lima
- Department of Animal Science and Rural Development, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Liris Kindlein
- Department of Preventive Veterinary Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, 91540-000, Brazil
| | | | - André Favero
- Santa Livia Farm, Farroupilha, Rio Grande do Sul, Brazil
| | - Glauber Wagner
- Laboratory of Bioinformatics, Center of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
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15
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Shi TY, Li TE, Hao Y, Sun HC, Fu Y, Yan WC, Hao LL. Molecular characterization and protective efficacy of vacuolar protein sorting 29 from Eimeria tenella. Front Cell Infect Microbiol 2023; 13:1205782. [PMID: 37469602 PMCID: PMC10352494 DOI: 10.3389/fcimb.2023.1205782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/14/2023] [Indexed: 07/21/2023] Open
Abstract
Introduction Vacuolar protein sorting 29 (VPS29) is a core component of the retromer-retriever complex and is essential for recycling numerous cell-surface cargoes from endosomes. However, there are no reports yet on VPS29 of Eimeria spp. Methods Here, we cloned and prokaryotically expressed a partial sequence of Eimeria tenella VPS29 (EtVPS29) with RT-PCR and engineered strain of Escherichia coli respectively. The localization of the VPS29 protein in E. tenella sporozoites was investigated with immunofluorescence (IFA) and overexpression assays. And its protective efficacy against E. tenella infection was investigated in chickens with the animal protection test. Results An EtVPS29 gene fragment with an ORF reading frame of 549 bp was cloned. The band size of the expressed recombinant protein, rEtVPS29, was approximately 39 kDa and was recognized by the chicken anti-E. tenella positive serum. EtVPS29 protein was observed widely distributing in the cytoplasm of E. tenella sporozoites in the IFA and overexpression assays. rEtVPS29 significantly increased average body weight gain and decreased mean lesion score and oocyst output in chickens. The relative weight gain rate in the rEtVPS29-immunized group was 62.9%, which was significantly higher than that in the unimmunized and challenged group (P < 0.05). The percentage of reduced oocyst output in the rEtVPS29 immunized group was 32.2%. The anticoccidial index of the rEtVPS29-immunized group was 144.2. Serum ELISA also showed that rEtVPS29 immunization induced high levels of specific antibodies in chickens. Discussion These results suggest that rEtVPS29 can induce a specific immune response and is a potential candidate for the development of novel vaccines against E. tenella infections in chickens.
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Affiliation(s)
- Tuan-yuan Shi
- Institute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Tian-en Li
- Institute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, China
| | - Yun Hao
- Institute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, China
| | - Hong-chao Sun
- Institute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Yuan Fu
- Institute of Animal Husbandry and Veterinary Medicine, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Wen-chao Yan
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, Henan, China
| | - Li-li Hao
- College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu, Sichuan, China
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16
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Lee Y, Park I, Wickramasuriya SS, Lillehoj HS. Bacillus subtilis Expressing Chicken NK-2 Peptide Enhances the Efficacy of EF-1α Vaccination in Eimeria maxima-Challenged Broiler Chickens. Animals (Basel) 2023; 13:ani13081383. [PMID: 37106946 PMCID: PMC10135262 DOI: 10.3390/ani13081383] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/13/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
This study was conducted to investigate the synergistic effects of orally delivered B. subtilis-cNK-2 on vaccination with rEF-1α against E. maxima infection in broiler chickens. Chickens were assigned into the following five groups: control (CON, no Eimeria infection), non-immunized control (NC, PBS), component 1 (COM1, rEF-1α only), component 2 (COM2, rEF-1α plus B. subtilis empty vector), and component 3 (COM3, rEF-1α plus B. subtilis-NK-2). The first immunization was administered intramuscularly on day 4, and the second immunization was given one week later with the same concentration of components as the primary immunization. The immunization of B. subtilis spores (COM2 and COM3) was performed by oral administration given for 5 consecutive days a week later than the second immunization. On day 19, all the chickens except the CON group were orally challenged with E. maxima oocysts (1.0 × 104/chicken). The results of the in vivo vaccination showed that all the chickens immunized with rEF-1α (COM1, COM2, and COM3) produced higher (p < 0.05) serum antibodies against EF-1α on 12 days post-E. maxima infection (dpi). The COM3 group showed a significantly (p < 0.05) higher average body weight gain (BWG) on 0-6, 6-9, and 0-12 dpi compared to those of the non-immunized chickens (NC). Immunization with rEF-1α alone (COM1) reduced the gut lesion score on 6 dpi and the fecal oocyst shedding on 9 dpi, whereas co-administration with B. subtilis spores (COM2 or COM3) led to further reduction in the lesion score. E. maxima infection increased the expression levels of IFN-γ and IL-17β in the jejunum, but these expressions were downregulated in the rEF-1α immunized (COM1) group and in the groups immunized with rEF-1α and orally treated with B. subtilis spores (COM2 or COM3) at 4 dpi. A reduced gene expression of occludin in the jejunum of the E. maxima-infected chickens on 4 dpi was upregulated following the immunization with COM2. Collectively, rEF-1α vaccination induced significant protection against E. maxima infection in the broiler chickens, and the efficacy of rEF-1α vaccination was further enhanced by co-administration with orally delivered B. subtilis spores expressing cNK-2.
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Affiliation(s)
- Youngsub Lee
- Animal Biosciences and Biotechnology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD 20705, USA
| | - Inkyung Park
- Animal Biosciences and Biotechnology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD 20705, USA
| | - Samiru S Wickramasuriya
- Animal Biosciences and Biotechnology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD 20705, USA
| | - Hyun S Lillehoj
- Animal Biosciences and Biotechnology Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD 20705, USA
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17
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Pajić M, Todorović D, Knežević S, Prunić B, Velhner M, Andrić DO, Stanimirovic Z. Molecular Investigation of Eimeria Species in Broiler Farms in the Province of Vojvodina, Serbia. Life (Basel) 2023; 13:life13041039. [PMID: 37109568 PMCID: PMC10144399 DOI: 10.3390/life13041039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/25/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Coccidiosis is a significant poultry disease caused by the Eimeria species. This study aims to determine the prevalence of Eimeria spp. on broiler farms in Vojvodina, along with the identification of parasite species, and assess the implemented biosecurity measures. The study was conducted on 100 broiler chicken farms (28 small-sized; 34 medium-sized; 38 large-sized farms) from June 2018 to December 2021. One pooled sample of faeces was collected from three to six-week-old chickens from each farm, and assessment of biosecurity measures was carried out using a questionnaire. Using the PCR method, DNA of Eimeria was found in 59 samples (59%), while 41 samples (41%) were negative. Four species of Eimeria were identified, and their prevalence was the following: E. acervulina (37%), E. maxima (17%), E. mitis (25%) and E. tenella (48%). A significant difference (p < 0.05) was established in the number of oocysts in flocks from small-sized farms compared to medium-sized farms. It was found that regular implementation of disinfection, disinsection and deratisation measures, as well as all the biosecurity measures, can significantly reduce the occurrence of coccidiosis. These results will help to develop better strategies for the control and prevention of coccidiosis on farms.
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Affiliation(s)
- Marko Pajić
- Scientific Veterinary Institute of "Novi Sad", 21000 Novi Sad, Serbia
| | - Dalibor Todorović
- Scientific Veterinary Institute of "Novi Sad", 21000 Novi Sad, Serbia
| | - Slobodan Knežević
- Scientific Veterinary Institute of "Novi Sad", 21000 Novi Sad, Serbia
| | - Bojana Prunić
- Scientific Veterinary Institute of "Novi Sad", 21000 Novi Sad, Serbia
| | - Maja Velhner
- Scientific Veterinary Institute of "Novi Sad", 21000 Novi Sad, Serbia
| | | | - Zoran Stanimirovic
- Faculty of Veterinary Medicine, University of Belgrade, 11000 Belgrade, Serbia
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Lee Y, Park I, Lillehoj HS. Oral administration of chicken NK-lysin or recombinant chicken IL-7 improves vaccine efficacy of Eimeria tenella elongation factor-1α (EF-1α) against coccidiosis in commercial broiler chickens. Poult Sci 2023; 102:102611. [PMID: 36940651 PMCID: PMC10036930 DOI: 10.1016/j.psj.2023.102611] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/17/2023] [Accepted: 02/18/2023] [Indexed: 02/26/2023] Open
Abstract
The synergistic effects of orally-delivered chicken NK-lysin peptide 2 (cNK-2) or recombinant chicken IL-7 (rchIL-7) on vaccination with recombinant Eimeria elongation factor-1α (rEF-1α) against Eimeria maxima (E. maxima) infection was investigated in broiler chickens. Chickens were divided into six groups: control (CON, no Eimeria infection), non-immunized control (NC, PBS), Vaccination 1 (VAC 1, rEF-1α plus cNK-2), Vaccination 2 (VAC 2, rchIL-7 plus cNK-2), Vaccination 3 (VAC 3, rEF-1α/rchIL-7 plus cNK-2), and Vaccination 4 (VAC 4, rEF-1α/rchIL-7 plus cNK-2). All groups, except the CON and NC, were orally treated with cNK-2 for 5 days. The first immunization, except for the VAC 4 group, was performed intramuscularly on day 4, and the second immunization was given with the same concentration of components as the primary immunization one week later. The immunization of the VAC 4 group was carried out by an oral inoculation on the same days. On day 19, all chickens except the CON group, were orally challenged with E. maxima (1.0 × 104 oocysts/chicken). The in vivo vaccination results showed that the VAC 1 and VAC 3 groups produced high (p < 0.05) levels of serum antibody titers to rEF-1α, and the VAC 3 showed enhanced (p < 0.05) levels of serum IL-7. Furthermore, the VAC 3 group showed significantly (p < 0.01) greater body weight gains at 6- and 9-days post-E. maxima infection (dpi) with reduced oocyst shedding at 6 dpi. The average jejunal lesion score of the NC group was 2.5 whereas the VAC 1 group showed a significantly (p < 0.05) lower lesion scores at 6 dpi. E. maxima infection significantly (P < 0.05) up-regulated the expression levels of cytokines (IL-6, IL-10 and IFN-γ) in the jejunum at 4 dpi, but those expressions were down-regulated in VAC 1 or VAC 3 groups. Moreover, the gene expression levels of Jam 2 and Occludin, were significantly (P < 0.05) decreased following E. maxima infection in jejunum at 4 dpi (NC), but their expressions were increased in the VAC 3 group. Collectively, these results showed that the efficacy of rEF-1α vaccination was significantly enhanced when rEF-1α vaccine co-immunized with chIL-7 or cNK-2.
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Affiliation(s)
- Youngsub Lee
- Animal Bioscience and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD 20705, USA
| | - Inkyung Park
- Animal Bioscience and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD 20705, USA
| | - Hyun S Lillehoj
- Animal Bioscience and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD 20705, USA.
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Molecular characterization and analysis of drug resistance-associated protein enolase 2 of Eimeria tenella. Int J Parasitol Drugs Drug Resist 2023; 21:81-90. [PMID: 36764225 PMCID: PMC9929201 DOI: 10.1016/j.ijpddr.2023.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
Eimeria tenella, an intestinal parasite, has brought huge economic losses to the poultry industry. The prevalence and severity of the development of drug resistance has increased the challenge of coccidiosis control. We previously identified the enolase 2 of E. tenella (EtENO2) was differentially expressed in drug-sensitive (DS) and drug-resistant strains using RNA-seq. In this study, the expression of EtENO2 in diclazuril-resistant (DZR), maduramicin-resistant (MRR), and salinomycin-resistant (SMR) strains was analyzed by quantitative real-time PCR (qRT-PCR) and western blots. EtENO2 was highly expressed in several drug-resistant strains compared with the DS strain. The qRT-PCR showed that the transcription level of EtENO2 in the field-isolated resistant strains was upregulated compared with the DS strain. The enzyme activity results indicated that the catalytic activity of EtENO2 in the drug-resistant strains was higher than in the DS strain. In addition, qRT-PCR and western blots showed that the expression level of EtENO2 was higher in second generation merozoites (SM) and unsporulated oocysts (UO) than that in sporozoites (SZ) and sporulated oocysts (SO). Immunofluorescence localization revealed that EtENO2 was distributed throughout SZ and SM and on the surface of the parasites. After the SZ invasion DF-1 cells, it was also observed on the parasitophorous vacuole membrane. Our secretion experiments found that EtENO2 could be secreted outside the SZ. This study indicated that EtENO2 might be related to the interaction between E. tenella and host cells and be involved in the development of E. tenella resistance to some anticoccidial drugs.
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20
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Wang M, Tian D, Xu L, Lu M, Yan R, Li X, Song X. Protective efficacy induced by Eimeria maxima rhomboid-like protein 1 against homologous infection. Front Vet Sci 2023; 9:1049551. [PMID: 36686197 PMCID: PMC9845710 DOI: 10.3389/fvets.2022.1049551] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 12/12/2022] [Indexed: 01/06/2023] Open
Abstract
Introduction Avian coccidiosis, caused by apicomplexan protozoa belonging to the Eimeria genus, is considered one of the most important diseases in the intensive poultry industry worldwide. Due to the shortcomings of live anticoccidial vaccines and drugs, the development of novel anticoccidial vaccines is increasingly urgent. Methods Eimeria maxima rhomboid-like protein 1 (EmROM1), an invasion-related molecule, was selected as a candidate antigen to evaluate its protective efficacy against E. maxima in chickens. Firstly, the prokaryotic recombinant plasmid pET-32a-EmROM1 was constructed to prepare EmROM1 recombinant protein (rEmROM1), which was used as a subunit vaccine. The eukaryotic recombinant plasmid pVAX1.0-EmROM1 (pEmROM1) was constructed as a DNA vaccine. Subsequently, 2-week-old chicks were separately vaccinated with the rEmROM1 and pEmROM1 twice every 7 days. One week post the booster vaccination, induced cellular immune responses were determined by evaluating the mRNA level of cytokines including IL-2, IFN-γ, IL-4, IL-10, TGF-β, IL-17, and TNFSF15, as well as the percentages of CD4+ and CD8+ T cells from spleens of vaccinated chickens. Specific serum antibody level in the vaccinated chickens was determined to assess induced humoral immune responses. Finally, the protective efficacy of EmROM1 was evaluated by a vaccination-challenge trial. Results EmROM1 vaccination significantly upregulated the cytokine transcription levels and CD4+/CD8+ T cell percentages in vaccinated chickens compared with control groups, and also significantly increased the levels of serum-specific antibodies in vaccinated chickens. The animal trial showed that EmROM1 vaccination significantly reduced oocyst shedding, enteric lesions, and weight loss of infected birds compared with the controls. The anticoccidial index (ACI) from the rEmROM-vaccination group and pEmROM1-vaccination group were 174.11 and 163.37, respectively, showing moderate protection against E. maxima infection. Discussion EmROM1 is an effective candidate antigen for developing DNA or subunit vaccines against avian coccidiosis.
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Yu Z, Xu L, He K, Lu M, Yan R, Song X, Li X. Actin depolymerizing factor-based nanomaterials: A novel strategy to enhance E. mitis-specific immunity. Front Immunol 2022; 13:1080630. [PMID: 36618362 PMCID: PMC9810622 DOI: 10.3389/fimmu.2022.1080630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
The epidemic of avian coccidiosis seriously threatens the animals' welfare and the economic gains of the poultry industry. Widespread in avian coccidiosis, Eimeria mitis (E. mitis) could obviously impair the production performance of the infected chickens. So far, few effective vaccines targeting E. mitis have been reported, and the nanovaccines composed of nanospheres captured our particular attention. At the present study, we construct two kinds of nanospheres carrying the recombinant E. mitis actin depolymerizing factor (rEmADF), then the characterization was then analyzed. After safety evaluation, the protective efficacy of rEmADF along with its nanospheres were investigated in chickens. The promoted secretions of antibodies and cytokines, as well as the enhanced percentages of CD4+ and CD8+ T cells were evaluated by the ELISA and flow cytometry assay. In addition, the absolute quantitative real-time PCR (qPCR) assay implied that vaccinations with rEmADF-entrapped nanospheres could significantly reduce the replications of E. mitis in feces. Compared with the rEmADF-loaded chitosan (EmADF-CS) nanospheres, the PLGA nanospheres carrying rEmADF (EmADF-PLGA nanosphers) were more effective in up-regulating weight efficiency of animals and generated equally ability in controlling E. mitis burdens in feces, suggesting the PLGA and CS nanospheres loaded with rEmADF were the satisfactory nanovaccines for E. mitis defense. Collectively, nanomaterials may be an effective antigen delivery system that could help recombinant E. mitis actin depolymerizing factor to enhance immunoprotections in chicken against the infections of E. mitis.
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Affiliation(s)
- ZhengQing Yu
- School of Agriculture, Ningxia University, Yinchuan, Ningxia, China,Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - LiXin Xu
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Ke He
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - MingMin Lu
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - RuoFeng Yan
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - XiaoKai Song
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - XiangRui Li
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China,*Correspondence: XiangRui Li,
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Carrisosa M, Terra-Long MT, Cline J, Macklin KS, Dormitorio T, Wang C, Hauck R. Multilocus Sequence Typing of Eimeria maxima in Commercial Broiler Flocks. Avian Dis 2022; 66:389-395. [PMID: 36715469 DOI: 10.1637/aviandiseases-d-22-00040] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/25/2022] [Indexed: 11/10/2022]
Abstract
About 35% of all broiler flocks in the United States receive an anticoccidial vaccine, but it is not possible to easily differentiate Eimeria vaccine strains from Eimeria field isolates. Being able to do that would allow using vaccines in a more targeted way. The objective of this study was to collect Eimeria maxima isolates from broiler flocks that received anticoccidial feed additives and flocks that had been vaccinated against coccidia and then test them with a multilocus sequencing typing (MLST) scheme developed for this study. Fecal samples were obtained from commercial broiler flocks in Alabama and Tennessee. Oocyst counts in samples tended to be lower in flocks receiving anticoccidial feed additives and higher in vaccinated flocks. Selected samples were screened for presence of E. maxima by quantitative PCR, and Eimeria spp. composition was investigated by next-generation amplicon sequencing (NGAS) in 37 E. maxima positive samples. Other detected Eimeria spp. besides E. maxima were Eimeria acervulina in 35 samples, Eimeria praecox in 23 samples, Eimeria mitis or Eimeria mivati in 17 samples, and Eimeria necatrix or Eimeria tenella in 10 samples. Six partial E. maxima genes (dnaJ domain containing protein, 70-kDa heat shock protein, prolyl endopeptidase, regulator of chromosome condensation domain containing protein, serine carboxypeptidase, and vacuolar proton-translocating ATPase subunit) of 46 samples were sequenced. The MLST scheme was able to differentiate two vaccines from each other. Three of 17 samples from vaccinated flocks differed from the vaccine used in the flock, while 16 of 29 samples from unvaccinated flocks differed from the vaccine. However, there was also a large number of low-quality, ambiguous chromatograms and negative PCRs for the selected genes. If and when more advanced, possibly next-generation sequencing-based methods will be developed, the genes should be considered as targets.
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Affiliation(s)
- M Carrisosa
- Department of Poultry Science, Auburn University, Auburn, AL 36849
| | - M T Terra-Long
- Department of Poultry Science, Auburn University, Auburn, AL 36849
| | - J Cline
- Wayne Farms, Oakwood, GA 30566
| | - K S Macklin
- Department of Poultry Science, Auburn University, Auburn, AL 36849
| | - T Dormitorio
- Department of Poultry Science, Auburn University, Auburn, AL 36849
| | - C Wang
- Department of Pathobiology, Auburn University, Auburn, AL 36849
| | - R Hauck
- Department of Poultry Science, Auburn University, Auburn, AL 36849, .,Department of Pathobiology, Auburn University, Auburn, AL 36849
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Lin Y, Teng PY, Olukosi OA. The effects of xylo-oligosaccharides on regulating growth performance, nutrient utilization, gene expression of tight junctions, nutrient transporters, and cecal short chain fatty acids profile in Eimeria-challenged broiler chickens. Poult Sci 2022; 101:102125. [PMID: 36088820 PMCID: PMC9468463 DOI: 10.1016/j.psj.2022.102125] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 11/26/2022] Open
Abstract
A 21-d experiment was conducted to investigate the effects of xylo-oligosaccharides (XOS) on growth performance, nutrient utilization, gene expression of tight junctions, nutrient transporters, and cecal short chain fatty acids (SCFA) profile of broiler chickens challenged with mixed Eimeria spp. Two hundred fifty-two zero-day-old chicks were allocated to 6 treatments in a 3 × 2 factorial arrangement (corn-soybean meal diets supplemented with 0, 0.5, or 1.0 g/kg XOS; with or without Eimeria challenge). Challenged groups were inoculated with a solution containing E. maxima, E. acervulina, and E. tenella oocysts on d 15. During the infection period (d 15 to d 21), there was a significant (P < 0.05) Eimeria × XOS interaction for weight gain (WG). XOS significantly (P < 0.05) increased WG in the unchallenged birds but not in the challenged treatments. There was no significant Eimeria × XOS interaction for N and minerals utilization responses. XOS supplementation at 0.5 g/kg tended to alleviate Eimeria-induced depression in apparent ileal digestibility of DM (P = 0.052). Challenged birds had lower (P < 0.01) AME, AMEn, and total retention of N, Ca, and P. Eimeria upregulated (P < 0.01) gene expression of tight junction proteins claudin-1, junctional adhesion molecule-2, and glucose transporter GLUT1; but downregulated (P < 0.01) the peptide transporter PepT1, amino acid transporters rBAT, CAT2, y+LAT2, and zinc transporter ZnT1. XOS alleviated (P < 0.05) Eimeria-induced claudin-1 upregulation. Eimeria decreased (P < 0.05) cecal saccharolytic SCFA acetate, butyrate, and total SCFA, but increased (P < 0.05) branched chain fatty acids isobutyrate and isovalerate. The supplementation of XOS tended to decrease the concentration of isobutyrate (P = 0.08) and isovalerate (P = 0.062). In conclusion, 0.5 g/kg XOS supplementation alleviated depression in growth performance and nutrient utilization from the Eimeria challenge. In addition, supplemental XOS reversed the gene expression changes of claudin-1, also showed the potentials of alleviating the negative cecal fermentation pattern induced by Eimeria infection.
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Pires PGDS, Torres P, Teixeira Soratto TA, Filho VB, Hauptli L, Wagner G, Haese D, Pozzatti CD, Moraes PDO. Comparison of functional-oil blend and anticoccidial antibiotics effects on performance and microbiota of broiler chickens challenged by coccidiosis. PLoS One 2022; 17:e0270350. [PMID: 35793288 PMCID: PMC9258845 DOI: 10.1371/journal.pone.0270350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/08/2022] [Indexed: 11/18/2022] Open
Abstract
This study aimed to compare the effects of different levels of cashew nutshell liquid (CNSL) and castor oil (CNSL-castor oil) with growth-promoting antibiotics associated with anticoccidials in broiler chickens challenged with coccidiosis. In this work, 2520 one-day-old male broiler chicks (Cobb) were randomly assigned to 84 pens, containing 30 birds each. The experimental design was completely randomized, with seven treatments: enramycin (8 ppm), virginiamycin (16.5 ppm), and tylosin (55 ppm); different doses of CNSL-castor oil (0.5, 0.75, and 1.00 kg/t); and a control diet (without additives). All treatments received semduramicin + nicarbazin (500 g/t; Aviax® Plus) from 0 to 28 d and monensin sodium (100 ppm; Elanco) from 29 to 35 days of age, when the feed was without antibiotics. The challenge was introduced at 14 days of age by inoculating broiler chickens with sporulated Eimeria tenella, Eimeria acervulina, and Eimeria maxima oocysts via oral gavage. In addition to performance parameters, intestinal contents were collected at 28 and 42 days of age for microbiota analysis by sequencing the 16s rRNA in V3 and V4 regions using the Illumina MiSeq platform. Taxonomy was assigned using the SILVA database (v. 138) with QIIME2 software (v. 2020.11). After one week of challenge, the broilers that received tylosin had a higher body weight gain (BWG) than those in the control group (p < 0.05), while the other treatments presented intermediate values. At 28 d, the BWG was lower for the control, CNSL-Castor oil 0.5 kg/t, enramycin, and virginiamycin treatments than that in the tylosin treatment. The inclusion of CNSL-Castor oil at concentrations of 0.75 and 1 kg/t acted as an intermediate treatment (p < 0.05). For alpha diversity, using the Shannon index, it was possible to observe the effect of age, with substantial diversity at 42 d. The Firmicutes phylum had the highest abundance, with values between 84.33% and 95.16% at 42 d. Tylosin showed better performance indices than other treatments. CNSL-castor oil treatments with concentrations of 0.75 and 1 kg/t showed similar results to those of enramycin and virginiamycin. Furthermore, CNSL-castor oil acted as a modulator of intestinal microbiota, reducing the abundance of pathogenic bacteria.
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Affiliation(s)
| | - Pedro Torres
- Department of Animal Science and Rural Development, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Tatiany Aparecida Teixeira Soratto
- Laboratory of Bioinformatics, Center of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Vilmar Benetti Filho
- Laboratory of Bioinformatics, Center of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Lucélia Hauptli
- Department of Animal Science and Rural Development, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Glauber Wagner
- Laboratory of Bioinformatics, Center of Biological Sciences, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Douglas Haese
- Centro de Tecnologia Animal Ltda, Domingos Martins, ES, Brazil
| | | | - Priscila de Oliveira Moraes
- Advanced Poultry Gut Science, Florianópolis, Santa Catarina, Brazil
- Department of Animal Science and Rural Development, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
- * E-mail:
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Bedford MR, Apajalahti JH. The influence of nutrition on intestinal disease with emphasis on coccidiosis. Avian Pathol 2022; 51:504-520. [PMID: 35791756 DOI: 10.1080/03079457.2022.2098692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Ever since the poultry industry began to intensify early last century, coccidiosis has been a significant problem with which it has had to contend. Losses due to mortality and morbidity can be significant and before the advent of control agents there were several practices, some of which were nutritional, which were implemented to limit these losses. The development of coccidiostats reduced these problems considerably and as a result some of the more extreme intervention measures were no longer necessary. Modern day interpretation of what may have been happening with some of these early interventions provide interesting insights into what may be possible today should cocciodiostats be removed. More recent research has also indicated that the diet has a significant influence on the ability of poultry to resist and resolve an infection through direct and indirect effects on the pathogen, the immune system and on the litter. This paper reviews the role of dietary ingredients and nutrients on the pathogen to establish and the host to resist such an infection. There is clearly no panacea, but the combination of a few practices may reduce the overall challenge experienced by the poultry producer.
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Affiliation(s)
- M R Bedford
- AB Vista, 3 Woodstock Court, Blenheim Rd, Marlborough UK
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Zhang Y, Zuo R, Song X, Gong J, Wang J, Lin M, Yang F, Cheng X, Gao X, Peng L, Ji H, Chen X, Jiang S, Guo D. Optimization of Maduramicin Ammonium-Loaded Nanostructured Lipid Carriers Using Box–Behnken Design for Enhanced Anticoccidial Effect against Eimeria tenella in Broiler Chickens. Pharmaceutics 2022; 14:pharmaceutics14071330. [PMID: 35890226 PMCID: PMC9323563 DOI: 10.3390/pharmaceutics14071330] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 02/04/2023] Open
Abstract
Maduramicin ammonium (MAD) is one of the most frequently used anticoccidial agents in broiler chickens. However, the high toxicity and low solubility of MAD limit its clinical application. In this study, MAD-loaded nanostructured lipid carriers (MAD–NLCs) were prepared to overcome the defects of MAD by using highly soluble nanostructured lipid carriers (NLCs). The formulation was optimized via a three-level, three-factor Box–Behnken response surface method. Then, the optimal MAD–NLCs were evaluated according to their hydrodynamic diameter (HD), zeta potential (ZP), crystal structure, encapsulation efficiency (EE), drug loading (DL), in vitro release, and anticoccidial effect. The optimal MAD–NLCs had an HD of 153.6 ± 3.044 nm and a ZP of −41.4 ± 1.10 mV. The X-ray diffraction and Fourier-transform infrared spectroscopy results indicated that the MAD was encapsulated in the NLCs in an amorphous state. The EE and DL were 90.49 ± 1.05% and 2.34 ± 0.04%, respectively, which indicated that the MAD was efficiently encapsulated in the NLCs. In the in vitro study, the MAD–NLCs demonstrated a slow and sustained drug release behavior. Notably, MAD–NLCs had an excellent anticoccidial effect against Eimeria tenella in broiler chickens. In summary, MAD–NLCs have huge potential to form a new preparation administered via drinking water with a powerful anticoccidial effect.
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Affiliation(s)
- Yan Zhang
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Runan Zuo
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Xinhao Song
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Jiahao Gong
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Junqi Wang
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Mengjuan Lin
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Fengzhu Yang
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Xingxing Cheng
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Xiuge Gao
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Lin Peng
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Hui Ji
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Xia Chen
- College of Animal Science and Technolog, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China;
| | - Shanxiang Jiang
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
| | - Dawei Guo
- Engineering Center of Innovative Veterinary Drugs, Center for Veterinary Drug Research and Evaluation, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, China; (Y.Z.); (R.Z.); (X.S.); (J.G.); (J.W.); (M.L.); (F.Y.); (X.C.); (X.G.); (L.P.); (H.J.); (S.J.)
- Correspondence:
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Chen C, Zhang Y, Liu J, Wang M, Lu M, Xu L, Yan R, Li X, Song X. An Eimeria maxima Antigen: Its Functions on Stimulating Th1 Cytokines and Protective Efficacy Against Coccidiosis. Front Immunol 2022; 13:872015. [PMID: 35669766 PMCID: PMC9163350 DOI: 10.3389/fimmu.2022.872015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
A consensus is that the Th1 immune response plays a predominant role against avian coccidiosis. Therefore, an antigen with the ability to induce Th1 cytokine responses is an ideal candidate for the development of coccidiosis vaccines. In our previous study, EmARM-β, a Th1 cytokines-stimulating antigen, was screened from the cDNA expression library of Eimeria maxima (E. maxima). Herein, we verified its stimulative effects on Th1 cytokine productions and evaluated its protective efficacy against E. maxima infection. Recombinant EmARM-β protein was expressed, and eukaryotic expression plasmid pVAX1-EmARM-β was also constructed for the immunization of birds. An immunofluorescence assay was performed to detect the native form of EmARM-β protein in the stage of sporozoites. Expressions of specific transcription factors and cytokines in immunized chickens were measured using qPCR and ELISA to verify its stimulating function on Th1 cytokines. Specific IgG antibody levels and T lymphocyte subpopulation in the immunized chickens were detected using ELISA and indirect flow cytometry to determine induced immune responses. The results showed that EmARM-β native protein is massively expressed in the sporozoites stage of E. maxima. Effective stimulation from the EmARM-β antigen to T-bet and Th1 cytokines (IL-2 and IFN-γ) was observed in vivo. After being immunized with rEmARM-β or pVAX1-EmARM-β, significant promotion to the proportion of CD4+ and CD8+ T cells and the level of antigen-specific IgG antibodies in immunized chickens was also observed. Furthermore, vaccination with rEmARM-β antigen or pVAX1-EmARM-β resulted in alleviated weight loss and enteric lesion, reduced oocyst output, and higher anticoccidial index (ACI) in challenged birds. These results indicate that EmARM-β antigen can effectively stimulate the expression of Th1 cytokines and initiate host immune responses, providing moderate protective efficacy against E. maxima. Notably, EmARM-β protein is a promising candidate for developing a novel anticoccidial vaccine.
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Effects of Chlorogenic Acid on Performance, Anticoccidial Indicators, Immunity, Antioxidant Status, and Intestinal Barrier Function in Coccidia-Infected Broilers. Animals (Basel) 2022; 12:ani12080963. [PMID: 35454210 PMCID: PMC9030001 DOI: 10.3390/ani12080963] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/01/2022] [Accepted: 04/06/2022] [Indexed: 01/11/2023] Open
Abstract
The effects of chlorogenic acid (CGA) on growth performance, anticoccidial indicators (oocysts per gram of excreta, cecal lesion score, and bloody diarrhea score), immunity, antioxidant status, and intestinal barrier function in coccidia-infected broilers were investigated. A total of 240 one-day-old Arbor Acres broilers were randomly divided into four groups with six replicates of ten broilers each for 42 days. Four treatments included control diet (non-infected control, NC), control diet +Eimeria infection (infected control, IC), control diet +0.5 g/kg CGA + Eimeria infection (CGA0.5), and control diet +1 g/kg CGA + Eimeria infection (CGA1). At day 14, each broiler in IC, CGA0.5, and CGA1 groups was orally inoculated with 1 mL saline containing 4 × 105 sporulated oocysts. The results showed that the CGA1 group increased the average daily gain by 12.57% (p < 0.001) and decreased the feed/gain ratio (p = 0.010) and mortality (p = 0.030) by 13.00% and 77.76%, respectively, of broilers from 14 to 42 days compared with the IC group. The CGA1 group decreased the oocysts per gram of excreta (p < 0.001) and bloody diarrhea score (p = 0.001) compared with the IC group. The CGA0.5 and CGA1 groups increased total antioxidant capacity (p < 0.001) at day 21 and villus height (p < 0.001) in the duodenum and jejunum at day 42, and decreased the levels of interleukin 6 (IL-6) (p = 0.002), malondialdehyde (MDA) (p < 0.001), D-lactic acid (p < 0.001), and diamine oxidase (DAO) (p < 0.001) at day 21 and the levels of MDA (p < 0.001) and D-lactic acid (p = 0.003) at day 42 compared with the IC group. In the CGA1 group, villus height in the duodenum (p < 0.001) and jejunum (p = 0.017) increased at day 21 and in the ileum (p < 0.001) at day 42, and the level of DAO (p < 0.001) decreased at day 42 compared with the IC group. Broilers in the IC group had a higher IL-6 level (p = 0.048) at day 42 and lower IL-10 (p = 0.027) and immunoglobulin A (p = 0.042) levels at day 21, and IL-10 level (p = 0.017) at day 42 than those in the NC group, while no significant differences were observed among the NC, CGA0.5, and CGA1 groups. In conclusion, dietary supplementation with 1 g/kg CGA improved growth performance, immunity, antioxidant status, and intestinal barrier function in coccidia-infected broilers.
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Taylor J, Walk C, Misiura M, Sorbara JOB, Giannenas I, Kyriazakis I. Quantifying the effect of coccidiosis on broiler performance and infection outcomes in the presence and absence of control methods. Poult Sci 2022; 101:101746. [PMID: 35219136 PMCID: PMC8881651 DOI: 10.1016/j.psj.2022.101746] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 01/31/2023] Open
Abstract
A systematic review and meta-analysis was conducted to investigate the role of Eimeria species, dose and inoculation time, on performance and infection outcomes of different broiler strains infected for different study durations. The meta-analysis addressed E. acervulina, E. maxima, E. tenella, and mixed species infections, and involved data from 72 peer-reviewed articles, corresponding to 521 treatments performed on 20,756 broilers. A secondary objective was to investigate the effects of synthetic anticoccidials, ionophores, and vaccination against Eimeria on the above outcomes. Performance during infection was scaled (%) to that of the uninfected birds. Infection reduced scaled ADFI and ADG (P < 0.001) and increased feed conversion ratio (FCR; P < 0.05); there was a significant interaction between dose and species on scaled ADFI and ADG, suggesting that different species affected these variables to different extents (P < 0.001). There was a tendency for an interaction between dose and broiler strain on scaled ADFI (P = 0.079), and a significant interaction between these variables on scaled ADG (P < 0.01). A tendency for an interaction between oocyst dose and Eimeria species (P = 0.067) on maximum number of oocysts excreted was observed. Lesion scores were significantly affected by dose, species, and their interaction (P < 0.05), the latter caused by an increase in the lesion scores during E. maxima and E. tenella infections. Control methods significantly affected scaled ADG and FCR (P < 0.05) and there was an interaction between dose and control methods on ADFI (P < 0.001). Synthetic anticoccidial use improved scaled ADG (P < 0.01), whereas ionophores improved FCR compared with untreated birds (P < 0.01). An interaction between dose and control method on scaled ADFI was caused by the higher ADFI of vaccinated compared to untreated birds, as dose increased. There was a significant effect of control methods on lesion scores (P < 0.01). All findings advance our understanding of the factors that influence the impact of coccidiosis and its controls in broilers.
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Affiliation(s)
- James Taylor
- Institute for Global Food Security, Queen's University, Belfast BT7 1NN, United Kingdom
| | - Carrie Walk
- DSM Nutritional Products, Kaiseraugst 4303, Switzerland
| | - Maciej Misiura
- Institute for Global Food Security, Queen's University, Belfast BT7 1NN, United Kingdom
| | | | - Ilias Giannenas
- Laboratory of Nutrition, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
| | - Ilias Kyriazakis
- Institute for Global Food Security, Queen's University, Belfast BT7 1NN, United Kingdom.
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Suminda GGD, Bhandari S, Won Y, Goutam U, Kanth Pulicherla K, Son YO, Ghosh M. High-throughput sequencing technologies in the detection of livestock pathogens, diagnosis, and zoonotic surveillance. Comput Struct Biotechnol J 2022; 20:5378-5392. [PMID: 36212529 PMCID: PMC9526013 DOI: 10.1016/j.csbj.2022.09.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 12/03/2022] Open
Abstract
Increasing globalization, agricultural intensification, urbanization, and climatic changes have resulted in a significant recent increase in emerging infectious zoonotic diseases. Zoonotic diseases are becoming more common, so innovative, effective, and integrative research is required to better understand their transmission, ecological implications, and dynamics at wildlife-human interfaces. High-throughput sequencing (HTS) methodologies have enormous potential for unraveling these contingencies and improving our understanding, but they are only now beginning to be realized in livestock research. This study investigates the current state of use of sequencing technologies in the detection of livestock pathogens such as bovine, dogs (Canis lupus familiaris), sheep (Ovis aries), pigs (Sus scrofa), horses (Equus caballus), chicken (Gallus gallus domesticus), and ducks (Anatidae) as well as how it can improve the monitoring and detection of zoonotic infections. We also described several high-throughput sequencing approaches for improved detection of known, unknown, and emerging infectious agents, resulting in better infectious disease diagnosis, as well as surveillance of zoonotic infectious diseases. In the coming years, the continued advancement of sequencing technologies will improve livestock research and hasten the development of various new genomic and technological studies on farm animals.
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Mesa-Pineda C, Navarro-Ruíz JL, López-Osorio S, Chaparro-Gutiérrez JJ, Gómez-Osorio LM. Chicken Coccidiosis: From the Parasite Lifecycle to Control of the Disease. Front Vet Sci 2021; 8:787653. [PMID: 34993246 PMCID: PMC8724208 DOI: 10.3389/fvets.2021.787653] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 11/29/2021] [Indexed: 11/26/2022] Open
Abstract
The poultry industry is one of the main providers of protein for the world's population, but it faces great challenges including coccidiosis, one of the diseases with the most impact on productive performance. Coccidiosis is caused by protozoan parasites of the genus Eimeria, which are a group of monoxenous obligate intracellular parasites. Seven species of this genus can affect chickens (Gallus gallus), each with different pathogenic characteristics and targeting a specific intestinal location. Eimeria alters the function of the intestinal tract, generating deficiencies in the absorption of nutrients and lowering productive performance, leading to economic losses. The objective of this manuscript is to review basic concepts of coccidiosis, the different Eimeria species that infect chickens, their life cycle, and the most sustainable and holistic methods available to control the disease.
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Affiliation(s)
| | - Jeffer L. Navarro-Ruíz
- CIBAV Research Group, Facultad de Ciencias Agrarias, Universidad de Antioquia, Medellín, Colombia
| | - Sara López-Osorio
- CIBAV Research Group, Facultad de Ciencias Agrarias, Universidad de Antioquia, Medellín, Colombia
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