Pharmacotherapy of Chlamydiosis and Avian Campylobacteriosis in Poultry – PST06107 Basic Veterinary Pharmacology
NTA Level 6 • Semester 1 • PST06107 Pharmacotherapy of Chlamydiosis and Avian Campylobacteriosis in Poultry Basic Veterinary Pharmacology • Source Session/Topic 17 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. PST 06107 Basic Veterinary Pharmacology Session 17: Pharmacotherapy of Chlamydiosis and Avian Campylobacteriosis in Poultry Learning Tasks By the end of this session students are expected to be able to: Define Avian Campylobacterisosis and Chlamydiosis in Poultry List signs and symptoms of Avian Campylobacteriosis and Chlamydiosis in Poultry Describe pharmacological treatment of Avian Campylobacteriosis and Chlamydiosis in Poultry Describe Control and Prevention of Avian Campylobacteriosis and Chlamydiosis in Poultry Activity: Buzzing What is Chlamydiosis in Poultry ? Definition of Chlamydiosis in Poultry Chlamydiosis is subclinical, acute, subacute, or chronic disease of wild and domestic birds characterized by systemic, respiratory or digestive signs and lesions. It is caused by Chlamydia psittaci , an obligate intracellular bacterium. Respiratory discharges or feces are infective air borne particles and dusts may harbor the organism. The organism is excreted via secretions or excretions and transmitted through inhalation. Recovered birds remain carriers . Signs and Symptoms of Chlamydiosis in Poultry Nasal and ocular discharges, conjunctivitis, sinusitis, green to yellow-green droppings, inactivity, ruffled feathers, weakness, inappetence , and reduced feed consumption & weight loss can be seen in clinically affected birds Air sacculitis , pericarditis, periohepatitis , and peritonitis with serofibrinous exudates and hepatosplenomegaly are common in acute cases In chronic cases enlarged spleen or an enlarged, discolored liver, or both occur Enlarged spleen and enlarged, discolored liver in Chlamydiosis Pharmacological treatment of Chlamydiosis in Poultry First line Chlortetracycline, 20-30 mg/kg or 400-750 g/ton for a minimum of 2 weeks in feed, or Doxycycline, 2.5 to 10 mg/kg, PO in drinking water, daily for 3-5 days. Alternative Flumequine diluted 1:1500-2000 in drinking water for 3-5 days Note: Extended treatment for 2-6 weeks if needed Activity: Brainstorming What are the prevention and control measures for Chlamydiosis? Prevention and Control of Chlamydiosis in Poultry No effective vaccine for use in birds is available Appropriate biosecurity practices are necessary to control the introduction and spread of chlamydiae in an avian population which include; Quarantine and examination of all new birds Prevention of exposure to wild birds traffic control to minimize cross-contamination, isolation and treatment of affected and contact birds, thorough cleaning and disinfection of premises and equipment (preferably with small units managed on an all-in/all-out basis), provision of uncontaminated feed, maintenance of records on all bird movements, Continual monitoring for presence of chlamydial infection. Key Points Avian chlamydiosis can be an inapparent subclinical infection or acute, subacute, or chronic disease of wild and domestic birds characterized by respiratory, digestive, or systemic infection caused by Chlamydia psittaci Treatment prevents mortality and shedding but cannot be relied on to eliminate latent infection; shedding may recur. Tetracyclines (chlortetracycline, oxytetracycline , doxycycline) are the antibiotics of choice Evaluation What is Chlamydiosis? What are the common signs and symptoms Chlamydiosis? What is the pharmacological treatment of Chlamydiosis? What are the control measures against Chlamydiosis? References Riviere J. E., Papich M. G. (2009). Veterinary Pharmacology and Therapeutics (9 th Ed) Iowa, Wiley- Blackwel Publishers Hsu W. H. (2008). Handbook of Veterinary Pharmacology (1 st Ed) Iowa, Wiley- Blackwel Publishers Kuafmann J, (1996). Parasitic infections of domestic animals , (2 nd ed ).Berlin, Birkhäuser Verlag Press Hoare E. W. (2013). A manual veterinary therapeutics & pharmacology (2 nd ed ),New York, Forgotten Books Press Maddison . J. ( ed ) (2008). Small Animal Clinical Pharmacology , (2nd ed ). Philadelphia, Saunders Elsevier Limited ← Previous TopicNext Topic →View all Basic Veterinary Pharmacology topicsOpen Complete Full Notes PDF / OFFLINE NOTES Unataka kutumiwa notes hizi kupitia WhatsApp?Kwa notes zilizopangiliwa vizuri kwa kusoma offline au PDF, bonyeza kitufe hapa chini. Ujumbe wenye Level, Semester, Module na Topic utaandaliwa moja kwa moja.TUMIWA NOTES WHATSAPP WhatsApp: 255620339260