Most common chicken diseases

Diseasesymptoms
Coccidiosis• Droopy wings
• inactive
• ruffled feathers
• pale beaks and shanks
• bloody diarrhoea
• weight loss.
Fowl CholeraFowl Cholera• Dejection.
• Ruffled feathers.
• Loss of appetite.
• Diarrhoea.
• Coughing.
• Nasal, ocular and oral discharge.
• Swollen and cyanotic wattles and face.
• Sudden death.
• Swollen joints.
• Lameness.
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New Castle Disease• Egg laying stops.
• misshapen eggs are produced with rough shells and sometimes bleached shells.
• In chicks, gasping coughing and sneezing
• Birds may be seen sitting on their back hock joints
walking backwards or in circles
• putting the head between their legs
• inappetence
• droopy.
• breathing difficulties, nasal discharge, murky eyes
• paralysis in their legs and wings.Newcastle Disease
Fowl TyphoidFowl Typhoid• ruffled feathers
• pale head
• drooping comb
• inappetence
• orange coloured diarrhoea
Fowl Tick (Blue Bug)
Pullorum Disease• Chicks utter squeaky chirps
• appear drowsy
• ruffled feathers.
• Vent smeared with faecal discharges.
• no external symptoms are seen in adult birds.
Fowl PoxFowlpox can come in two forms, wet or dry.
dry form,
• unfeathered areas have wart-like lesions that heal in about two weeks.
wet form
• lesions around the mouth
• discharge from your eyes.
Gapes• open-mouth breathing
• grunting sound
• difficulty breathing
Scratchingtoo much scratching with feet and beaks.
making noise
Cannibalismchicken pecking each other
Egg eatingeating eggs laid by other birds or themselves.
Infectious Bronchitis• Reduced egg production
• inappetence
• discharge from • the bird's eyes and nostrils
• laboured breathing.
more on infectious brochitis
Marek's Diseasealso referred to as fowl paralysis,
• tumours
• irregularly shaped pupils
• blindness
• partial paralysis
Diarrhea
Crazy chick• chicks unable to walk in a straight line.
• chick may suddenly shake, topple and fall on their sides
• putting their heads between their legs.
• chicks alert. appetite not affected.
read more
Twisting Neck
• bird has difficulty balancing while standing because the neck twists,
• bird tries to balance by permanently looking upwards.
Botulism• Flaccid paresis of legs, wings, necks and eyelids
• The paresis rapidly progresses to paralysis
• birds fall into a deep coma with neck and head typically extended forward.
Twisted legsPerosis diseaseswollen, twisted, broken, or bowed legs, or loss of color in feathers, the comb, or the roof of the mouth.
Infectious Coryza• swelling of the face around the eyes and wattles
• nasal discharge
• swollen sinuses
• Watery discharge from the eyes
Salmoneliosis
Necrotic Enteritis• Swollen stomach
• droopiness
• (postmotem: rotten intestines, foul smelling water in cavity)
Ulcerative Enteritis (Quail disease)
Omphalitis
navel illness, mushy chick disease
• drowsy and droopy
• Down(feathers) “puffed up”
• stand near the heat source
• indifferent to feed or water.
• Diarrhoea sometimes occurs.
• poorly healed navels
• bluish colour of the abdominal muscles
Ascarids (Large Intestinal Roundworms)
Cecal Worms
gape worms• open-mouth breathing
• grunting sound
• difficulty breathing
Avian PoxFowl pox can come in two forms, wet or dry.
dry form,
• unfeathered areas have wart-like lesions that heal in about two weeks.
wet form
• lesions around the mouth
• discharge from your eyes.
Lymphoid LeukosisChickens with lymphoid leukosis have few typical clinical signs. These may include:
• inappetence
• weakness
• diarrhea
• dehydration
• emaciation
• depressed before death
On postmotem
• enlarged bursa and liver
• tumors,
read more
Quil brochitisNo signs in chicken but in quil:
• respiratory distress, coughing, sneezing, rales
• nasal or ocular discharge
• Loose, watery droppings
• Conjunctivitis
Infectious Bursal Disease (Gumboro)Gumboro has no symptoms of its own. But infections leaves the chick's immune system dented and thus it susceptible to many other infections.
Curly Toe paralysis• unable to stand or walk
• toes curled
Blackhead disease (histomoniasis)listless
drooping wings
unkempt feathers
yellow droppings.
inflammation and ulcers in the cecum and liver
CAPILLARIA (CAPILLARY OR THREAD WORMS)severe inflammation of intestines
haemorrhage
Erosion of the intestinal lining

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