Heterakis Gallinarum
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Epidemiology, Diagnosis and Control of Poultry Parasites
FAO Animal Health Manual No. 4 EPIDEMIOLOGY, DIAGNOSIS AND CONTROL OF POULTRY PARASITES Anders Permin Section for Parasitology Institute of Veterinary Microbiology The Royal Veterinary and Agricultural University Copenhagen, Denmark Jorgen W. Hansen FAO Animal Production and Health Division FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 1998 The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. M-27 ISBN 92-5-104215-2 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Information Division, Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, 00100 Rome, Italy. C) FAO 1998 PREFACE Poultry products are one of the most important protein sources for man throughout the world and the poultry industry, particularly the commercial production systems have experienced a continuing growth during the last 20-30 years. The traditional extensive rural scavenging systems have not, however seen the same growth and are faced with serious management, nutritional and disease constraints. These include a number of parasites which are widely distributed in developing countries and contributing significantly to the low productivity of backyard flocks. -
Broiler Litter Not Likely to Affect Northern Bobwhite Or Wild Turkeys, But…
Broiler litter not likely to affect northern bobwhite or wild turkeys, but… Broilers are chickens raised for meat. Many landowners use litter from broiler houses to fertilize pastures for increased forage production. A commonly asked question by those concerned about wildlife, particularly northern bobwhite and wild turkey, is whether or not it is safe to spread broiler litter on fields frequented by quail and turkeys since they are susceptible to some diseases prevalent among chickens. One of those diseases is histomoniasis (blackhead disease). Histomoniasis is caused by a protozoan parasite, Histomonas meleagridis, which often is found in cecal worms of domestic chickens and turkeys. Bobwhites or wild turkeys may contract the disease by ingesting cecal worm eggs infected with histomonads while foraging for insects, seed, or other plant parts. Birds infected with histomoniasis develop lesions on both the liver and ceca and may appear lethargic and depressed. Northern bobwhite are moderately susceptible to the disease (low to moderate mortality rates), whereas wild turkeys are severely susceptible (moderate to high mortality rates). Spreading broiler litter on pastures as fertilizer is not likely a problem for wild bobwhites or wild turkeys for two reasons. First, histomoniasis is far more prevalent in pen-reared quail or turkeys as opposed to wild birds because pen-reared birds tend to be infected with Heterakis gallinarum, the cecal worm of domestic chickens and turkeys. This cecal worm is an excellent vector of histomoniasis. Wild bobwhites and turkeys commonly are infected with another species of cecal worm, Heterakis isolonche, which is not a good vector of histomoniasis. -
Protozoal Management in Turkey Production Elle Chadwick, Phd July
Protozoal Management in Turkey Production Elle Chadwick, PhD July 10, 2020 (updated) The two turkey protozoa that cause significant animal welfare and economic distress include various Eimeria species of coccidia and Histomonas meleagridis (McDougald, 1998). For coccidia, oral ingestion of the organism allows for colonization and replication while fecal shedding passes the organism to another host. With Histomonas, once one turkey is infected it can pass Histomonas to its flock mates by cloacal contact. Outbreaks of coccidiosis followed by Histomonosis (blackhead disease) is commonly seen in the field but the relationship between the protozoa is not understood. Turkey fecal moisture, intestinal health and behavior changes due to coccidiosis could be increasing horizontal transmission of Histomonas. Clinical signs of coccidiosis, like macroscopic lesions in the intestines, are not necessarily evident but altered weight gain and feed conversion are (Madden and Ruff, 1979; Milbradt et al., 2014). Birds can become more vocal. Depending on the infective dose, strain of coccidia and immune response of the turkey, intestinal irritation leading to diarrhea can occur (Chapman, 2008; McDougald, 2013). Birds are also more susceptible to other infectious agents. This is potentially due to the damage the coccidia can cause on the mucosal lining of the intestines but studies on this interaction are limited (Ruff et al., 1981; Milbradt et al., 2014). Coccidia sporozoites penetrate the turkey intestinal mucosa and utilize the intestinal tract for replication and survival. Of the seven coccidia Eimeria species known for infecting turkeys, four are considered pathogenic (E. adenoeides, E. gallopavonis, E. meleagrimitis and E. dispersa) (Chapman, 2008; McDougald, 2013; Milbradt et al., 2014). -
Blackhead Disease in Poultry Cecal Worms Carry the Protozoan That Causes This Disease
Integrated Pest Management Blackhead Disease in Poultry Cecal worms carry the protozoan that causes this disease By Dr. Mike Catangui, Ph.D., Entomologist/Parasitologist Manager, MWI Animal Health Technical Services In one of the most unique forms of disease transmissions known to biology, the cecal worm (Heterakis gallinarum) and the protozoan (Histomonas meleagridis) have been interacting with birds (mainly turkeys and broiler breeders) to perpetuate a serious disease called Blackhead (histomoniasis) in poultry. Also involved are earthworms and house flies that can transmit infected cecal worms to the host birds. Histomoniasis eventually results in fatal injuries to the liver of affected turkeys and chickens; the disease is also called enterohepatitis. Importance Blackhead disease of turkey was first documented in [Fig. 1] are parasites of turkeys, chickens and other the United States about 125 years ago in Rhode Island birds; Histomonas meleagridis probably just started as a (Cushman, 1893). It has since become a serious limiting parasite of cecal worms before it evolved into a parasite factor of poultry production in the U.S.; potential mortalities of turkey and other birds. in infected flocks can approach 100 percent in turkeys and 2. The eggs of the cecal worms (containing the histomonad 20 percent in chickens (McDougald, 2005). protozoan) are excreted by the infected bird into the poultry barn litter and other environment outside the Biology host; these infective cecal worm eggs are picked up by The biology of histomoniasis is quite complex as several ground-dwelling organisms such as earthworms, sow- species of organisms can be involved in the transmission, bugs, grasshoppers, and house flies. -
Scwds Briefs
SCWDS BRIEFS A Quarterly Newsletter from the Southeastern Cooperative Wildlife Disease Study College of Veterinary Medicine The University of Georgia Phone (706) 542 - 1741 Athens, Georgia 30602 FAX (706) 542-5865 Volume 35 January 2020 Number 4 First report of HD in county 1980-1989 1990-1999 2000-2009 2010-2019 Figure 1. First reports of HD by state fish and wildlife agencies by decade from 1980 to 2019. Over most of this area, HD was rarely reported prior to 2000. Working Together: The 40th Anniversary of 1) sudden, unexplained, high mortality during the the National Hemorrhagic Disease Survey late summer and early fall; 2) necropsy diagnosis of HD as rendered by a trained wildlife biologist, a Forty years ago, in 1980, Dr. Victor Nettles diagnostician at a State Diagnostic Laboratory or launched an annual survey designed to document Veterinary College, or by SCWDS personnel; 3) and better understand the distribution and annual detection of epizootic hemorrhagic disease virus patterns of hemorrhagic disease (HD) in the (EHDV) or bluetongue virus (BTV) from an affected Southeast. Two years later (1982), this survey was animal; and 4) observation of hunter-killed deer that expanded to include the entire United States, and showed sloughing hooves, oral ulcers, or scars on its longevity and success can be attributed to a the rumen lining. These criteria, which have simple but informative design and the dedicated remained consistent during the entire 40 years, reporting of state fish and wildlife agency personnel. provide information on HD mortality and morbidity, During these 40 years, not a single state agency as well as validation of these clinical observations failed to report their annual HD activity. -
Review on Major Gastrointestinal Parasites That Affect Chickens
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by International Institute for Science, Technology and Education (IISTE): E-Journals Journal of Biology, Agriculture and Healthcare www.iiste.org ISSN 2224-3208 (Paper) ISSN 2225-093X (Online) Vol.6, No.11, 2016 Review on Major Gastrointestinal Parasites that Affect Chickens Abebe Belete* School of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Jimma University, P.O. Box: 307, Jimma, Ethiopia Mekonnen Addis School of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Jimma University, P.O. Box: 307, Jimma, Ethiopia Mihretu Ayele Department of animal health, Alage Agricultural TVET College, Ministry of Agriculture and Natural Resource, Ethiopia Abstract Parasitic diseases are among the major constraints of poultry production. The common internal parasitic infections occur in poultry include gastrointestinal helminthes (cestodes, nematodes) and Eimmeria species. Nematodes belong to the phylum Nemathelminthes, class Nematoda; whereas Tapeworms belong to the phylum Platyhelminthes, class Cestoda. Nematodes are the most common and most important helminth species and more than 50 species have been described in poultry; the majority of which cause pathological damage to the host.The life cycle of gastrointestinal nematodes of poultry may be direct or indirect but Cestodes have a typical indirect life cycle with one intermediate host. The life cycle of Eimmeria species starts with the ingestion of mature oocysts; and -
Poultry Industry Manual
POULTRY INDUSTRY MANUAL FAD PReP Foreign Animal Disease Preparedness & Response Plan National Animal Health Emergency Management System United States Department of Agriculture • Animal and Plant Health Inspection Service • Veterinary Services MARCH 2013 Poultry Industry Manual The Foreign Animal Disease Preparedness and Response Plan (FAD PReP)/National Animal Health Emergency Management System (NAHEMS) Guidelines provide a framework for use in dealing with an animal health emergency in the United States. This FAD PReP Industry Manual was produced by the Center for Food Security and Public Health, Iowa State University of Science and Technology, College of Veterinary Medicine, in collaboration with the U.S. Department of Agriculture Animal and Plant Health Inspection Service through a cooperative agreement. The FAD PReP Poultry Industry Manual was last updated in March 2013. Please send questions or comments to: Center for Food Security and Public Health National Center for Animal Health 2160 Veterinary Medicine Emergency Management Iowa State University of Science and Technology US Department of Agriculture (USDA) Ames, IA 50011 Animal and Plant Health Inspection Service Telephone: 515-294-1492 U.S. Department of Agriculture Fax: 515-294-8259 4700 River Road, Unit 41 Email: [email protected] Riverdale, Maryland 20737-1231 subject line FAD PReP Poultry Industry Manual Telephone: (301) 851-3595 Fax: (301) 734-7817 E-mail: [email protected] While best efforts have been used in developing and preparing the FAD PReP/NAHEMS Guidelines, the US Government, US Department of Agriculture and the Animal and Plant Health Inspection Service and other parties, such as employees and contractors contributing to this document, neither warrant nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or procedure disclosed. -
A Case Study of Histomoniasis in Fattening Turkeys Identified In
German Journal of Veterinary Research eISSN:2703-1322 Case Report A case study of histomoniasis in fattening turkeys identified in histopathological investigations Amr Abd El-Wahab1;2∗, Christian Visscher2, Wolfram Haider3∗ and Radko Dimitri4∗ 1 Department of Nutrition and Nutritional Deficiency Diseases, Faculty of Veterinary Medicine,Mansoura University, Man- soura 35516, Egypt 2 Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hannover, Germany 3 Institute for Animal Pathohlogy, 13127 Berlin, Germany 4 Elanco Deutschland GmbH, 61352 Bad Homburg, Germany This article is published in the special issue: Turkey Diseases, Production and Management Abstract Histomoniasis is a parasitic disease of poultry with worldwide prevalence, having signif- icant negative impacts on infected turkey health and welfare. A total of 53,000 male fattening turkeys (British United Turkeys, BUT6) of 140-day-old were admitted to the slaughterhouse in central Ukraine. No clinical signs were reported in the turkeys during the production cycle. Slaughtering of the turkeys revealed enlargement of the livers, most of which had a greenish color with alterations in the hepatic tissues (fibrosis). No other gross lesions were noted in other organs of the slaughtered birds. Fresh liver tissues were submitted to the laboratory to measure the concentrations of lead, cadmium, copper, and zinc to detect possible intoxication and/or differential diagnosis. The concentrations of measured heavy metals in the affected liver tissues were within the recommended normal ranges. Histological examination revealed microscopically proliferative changes in liver Article History: sections in different turkeys. Suspected tissue sections were stained with Periodic Acid Received: 29-Apr-2021 Schiff and found positive for Histomonas meleagridis trophozoites. -
WSC 10-11 Conf 5
The Armed Forces Institute of Pathology Department of Veterinary Pathology Conference Coordinator Matthew Wegner, DVM WEDNESDAY SLIDE CONFERENCE 2010-2011 Conference 5 8 September 2010 Conference Moderator: Dale G. Dunn, DVM, Diplomate ACVP CASE I: 396/08 (AFIP 3162240). extended to full thickness in the central cornea in most birds but in more severely affected birds the inflammation was full Signalment: 42-day-old broiler breeder chicks (Gallus thickness to penetrating across most of the cornea. gallus domesticus). The stroma showed patchy to extensive necrosis, and History: Eyes were submitted from 42-day-old broiler activation and proliferation of keratocytes. Within the breeder chicks with a history of unilateral ocular disease and inflammation, particularly near areas of necrosis in the possible flock history of Chlamydophila conjunctivitis. superficial and mid stroma there were few to moderate Birds were otherwise healthy and the submitted eyes numbers of branched, septate fungal hyphae. Staining with returned negative PCR for Chlamydophila. Scediosporum both PAS and GMS highlights the fungi. apiospermum was cultured from corneal tissue. Endothelium and Descemet's membrane were missing from Gross Pathology: Eyes from six birds, five with the central corneal region at the area of full thickness macroscopic corneal changes and one grossly normal, were inflammation. There was a wedge of fibrous tissue bridging submitted. The damaged eyes had opaque, white cream the gap. In the worst affected birds, Descemet's membrane, corneas that bulged abruptly to a height of 1 to 2 mm above which is very thin in this age of bird, could not be detected. the limbus. All eyes were opened with temporal calottes. -
Family- Monocercomonadidae
Family- Monocercomonadidae Organism posses 3-5 anterior flagella with recurrent flagella usually free Genus - Monocercomonas Pyriform body, 3 anterior flagella, a trailing flagellum but no undulating membrane Axostyle rod like protrude from posterior end Monocercomonas ruminantiumoccur at rumen of cattle M. gallinarumin the caecum of chicken, non-pathogenic Genus - Histomonas Organism are amoeboid with single nucleus, single flagellum arise from basal granule, close to nucleus. Histomonas meleagridis The protozoan Histomonas meleagridis infects a wide range of gallinaceous birds and causes histomoniosis (blackhead disease) or infectious enterohepatitis. Chickens are typically asymptomatic carriers, but mortality in turkeys is commonly 80%-100%. Clinical signs include drooping head and wings, prolonged standing, closed eyes, ruffled feathers, emaciation, and sulfur-colored droppings. Diagnosis is based on pathognomonic ulceration of the ceaca and necrotic lesions in the liver. There are no vaccines. Etiology of Histomoniosis in Poultry Histomonas meleagridis, an anaerobic protozoan parasite of the order Trichomonadida, is the causative agent of histomoniosis (blackhead disease). It can exist in flagellated (8–15 µm in diameter) and amoeboid (8–30 µm in diameter) forms. H.meleagridis is primarily transmitted in the egg of the cecal nematode, Heterakis gallinarum. Chickens and other gallinaceous birds act as a reservoir for H gallinarum. Nematode eggs infected with H meleagridis remain viable in the environment for years. Three species of earthworms can act as paratenic hosts for H gallinarum larvae containing H meleagridis. Chickens and turkeys that consume these earthworms can become infected with both H gallinarum and H meleagridis. In turkeys, transmission by direct cloacal contact with infected birds or via fresh droppings results in H meleagridis quickly spreading throughout the flock. -
Technical Report
United States Department of Agriculture Agricultural Marketing Service | National Organic Program Document Cover Sheet https://www.ams.usda.gov/rules-regulations/organic/national-list/petitioned Document Type: ☐ National List Petition or Petition Update A petition is a request to amend the USDA National Organic Program’s National List of Allowed and Prohibited Substances (National List). Any person may submit a petition to have a substance evaluated by the National Organic Standards Board (7 CFR 205.607(a)). Guidelines for submitting a petition are available in the NOP Handbook as NOP 3011, National List Petition Guidelines. Petitions are posted for the public on the NOP website for Petitioned Substances. ☒ Technical Report A technical report is developed in response to a petition to amend the National List. Reports are also developed to assist in the review of substances that are already on the National List. Technical reports are completed by third-party contractors and are available to the public on the NOP website for Petitioned Substances. Contractor names and dates completed are available in the report. Fenbendazole Livestock 1 Identification of Petitioned Substance 2 Chemical Names: 16 Trade Names: 3 Fenbendazole 17 Safeguard®, AquaSol, Panacur, Worm-A-Rest; 4 Methyl N-(5-phenylsulfanyl-3H-benzimidizaol-2- 18 Lincomix; Zoetis-BMD® 5 yl)carbamate 19 6 5-(Phenylthio)-2-benzimidazolecarbamic Acid CAS Number: 7 Methyl Ester 43210-67-9 8 Carbamic acid, N-[6-(phenylthio)-1H- 9 benzimidazol-2-yl]-, methyl ester Other Codes: 10 Methanol, 1-methoxy-1-[[6-(phenylthio)-1H- ChemSpider: 3217 11 benzimidazol-2-yl]imino]-, (E)- EINECS: 256-145-7 12 InChi Key: HDDSHPAODJUKPD- 13 Other Name: UHFFFAOYSA-N 14 FBZ, Fenbendazol, Phenbendasol; PubChem: CID 15 Fenbendazolum, HOE 881 SMILES: COC(=O)NC1=NC2=C(N1)C=C(C=C2)SC3=CC= CC=C3 20 21 22 Summary of Petitioned Use 23 24 The petition is to amend the annotation at 7 CFR 205.603(a)(23)(i) to include “laying hens and replacement 25 chickens intended to become laying hens . -
Internal Parasites in Chickens
Bringing information and education into the communities of the Granite State Internal Parasites in Chickens Internal Parasites can be classified into two basic groups, worms and protozoa. Parasitic disease differs from bacterial and viral Chicken coccidia fecal flotation. disease in specific ways: • Parasites have a complex lifecycle. • Parasites are transmitted from bird to bird differently than viruses or bacteria. • Serology (blood analysis) doesn’t work for diagnosing parasites. • Quarantine and disinfection are of little use in controlling parasites. Modern commercial confinement systems have significantly reduced the incidence of worm infestation by limiting the bird’s access to many parasites’ alternate hosts. On the other hand, confinement systems and high-density stocking rates have led to an increase in the incidence of protozoan parasitic disease in these flocks. Parasites that cause disease of chickens often Intestinal parasites - worms - are common in backyard and free- include (left to right): Tapeworms, Roundworms, Threadworms, and Cecal worms as illustrated range flocks. Low levels of parasitism don’t usually cause a problem. above. If the infestation becomes severe, however, worms can lead to significant losses of production, feed efficiency, and overall health. Worms Ascarids: Large Roundworms Large roundworms or ascarids are the most damaging of the worms common to backyard flocks. Mild infestations of ascarids often go unnoticed, but severe infestations can cause a reduction in nutrient absorption, intestinal blockage and death. Severe infestation not only makes the birds less efficient, it also makes “Severe infestation not only them more susceptible to other disease organisms. Large roundworms makes the birds less efficient, are about the thickness of a pencil lead and grow up to four and one-half it also makes them more inches long.