Spreading of broiler diseases

Spreading of broiler diseases

• 1.
  Sachith Sri Mihiraj BSc(Special), M.Agri
• 2.
  Disease  Passing ofa communicable disease from an infected host in individual or group to a conspecific individual or group, regardless of whether the other individual was previously infected. Spreading of diseases • A disorder of structure or function in an any organism which produces specific symptom
• 3.
  Spreading of broilerdiseases  A disease can spread rapidly among broilers by new infectious agents entering to stock or by the spread of established agents that are already in the stock.
• 4.
  Disease can bespread by,  People - through clothing, hands and footwear  Domestic and wild birds – through droppings , feathers and dischargers from nose and mouth  Contaminated equipment and vehicles  Air  Feed and water  Animals – dogs, cats, rodents  Insects – mosquitoes, flies, beetles
• 5.
  Methods of spreading diseases Methods Indirect (Horizontal) Hatcherytransmission Airborne transmission Foodborne transmission Vector borne transmission Environmental transmission Direct (Vertical) True vertical Apparel vertical
• 6.
  Direct Transmission Infected diseasesoften spread through direct contact . There are two ways;  True transmission  Apparel transmission
• 7.
  1)True Transmission ovarian oruterine infection from mother to chick Eg: Pullorum Avian Encephalomyelitis 2)Apparel Transmission fecal contamination of egg with subsequent penetration Eg: Salmonellae
• 8.
  Indirect Transmission Infectious diseasescan be also spread indirectly through the air and other mechanism . There are five ways;  Hatchery transmission  Air-borne transmission  Food-borne transmission  Vector-bone transmission  Environment transmission
• 9.
  1)Hatchery transmission  Highhumidity, high air flow and 990 F temperature like environmental conditions affect on susceptible young chicks  This will increase by presence of chicks affected with other diseases, weak second-grade chicks, poor conditions as a result of underfeeding and no vaccination. Eg: Aspergillosis Salmonella Pullorum
• 10.
  2)Airborne transmission  Someinfectious agents can travel long distances and remain suspended in the air for an extended period of time.  It can be transmitted among pen mates  house to house farm to farm Eg:  Newcastle  Bronchitis  Fowl coryza
• 11.
  3)Food-borne transmission This canhappen through contaminated food and water. There are 2 ways of contamination. I. On-farm contamination of feed Eg: Candidiasis Pullorum fowl coryza II. contamination before farm delivery Eg: Salmonella Newcastle
• 12.
  4)Vector borne transmission Thistransmission happens through Man  Litter and house Eg; Newcastle  Equipment Eg; Gumbore Predators and rodents Eg; Newcastle Free flying birds Insects Eg; tape worm infection by housefly Artificial insemination
• 13.
  5)Environmental transmission Diseases alsocan be transmitted by contaminated uncleaned poultry house, wet litter, too hot or too cold condition, high buildup of chicken droppings, no air circulation. Eg: Marek’s disease
• 14.
  How spreading ofdisease can affect to the broiler production?  Reduce the growth rate  Reduce breeding ability  Reduce the feed conversion ratio  Reduce the quality and quantity of meat  Economical losses
• 15.
  Prevention methods  Maintainthe hygiene of the pen and surrounding  Proper vaccination  Do not share equipment between farms  Control the wind spread  Maintain a foot bath  Same age birds in one batch  Practice all in out method  Dispose dead birds properly  Secure poultry entering of dogs, cats, rodents and birds
• 16.
  Thank you