Ascaridia galli

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Ascaridia galli

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contents
6.Lesions
6.Lesions
1.Instroduction
1.Instroduction
1.Instroduction
1.Instroduction
1.Instroduction
1.Instroduction
1.Instroduction
2.Morphology
2.Morphology
2.Morphology
2.Morphology
2.Morphology
2.Morphology
2.Morphology
7.Diagnosis
7.Diagnosis
8.Treatment and Control
8.Treatment and Control
8.Treatment and Control
3.Life cycle
3.Life cycle
3.Life cycle
3.Life cycle
3.Life cycle
3.Life cycle
3.Life cycle
9.References
9.References
9.References
9.References
4.Epidemiology
4.Epidemiology
4.Epidemiology
4.Epidemiology
4.Epidemiology
4.Epidemiology
5.Symptoms
5.Symptoms
5.Symptoms
5.Symptoms
5.Symptoms
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Introduction
Ascaridia galli is a parasitic roundworm(????)belo
nging to the phylum Nematoda(?????).
Ascaridia galli is a parasitic roundworm(????)belo
nging to the phylum Nematoda(?????).
Ascaridia galli is a parasitic roundworm(????)belo
nging to the phylum Nematoda(?????).
Ascaridia galli is a parasitic roundworm(????)belo
nging to the phylum Nematoda(?????).
Nematodes of the genus Ascaridia(???) are
essentially intestinal parasites(?????)of birds.
Nematodes of the genus Ascaridia(???) are
essentially intestinal parasites(?????)of birds.
Nematodes of the genus Ascaridia(???) are
essentially intestinal parasites(?????)of birds.
A. galli is the most prevalent and
pathogenic species (???), especially in
domestic fowl (?).
A. galli is the most prevalent and
pathogenic species (???), especially in
domestic fowl (?).
A. galli is the most prevalent and
pathogenic species (???), especially in
domestic fowl (?).
It causes ascaridiasis, a disease of poultry
(??) due to heavy worm infection, particularly
in chicken and turkeys (??).
It causes ascaridiasis, a disease of poultry
(??) due to heavy worm infection, particularly
in chicken and turkeys (??).
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back
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Morphology
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Posterior end of female (????)
???? a prominent mouth which is surrounded by
three large tri-lobed lips.
Anus(??) at the end of the worm
Posterior end of male (????)
Anterior end (??)
10 Sex papilla(???) There is a preanal
sucker(????) Before coacal pore(???)
Theres 2 ventral lip(???),esophagus(??),nerve
ring(???)
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Life cycle
The development from egg to adult infectious need
58 weeks. Adult life span of about 1 years
Adults Parasite in the stomach or small
intestine
Occasionlly ,earthworms become into storage host
with swallowing  their eggs
Infective eggs
Eggs containing infective larvae
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Stomach(?) or small intestine(??)
Back to the intestine(????)
Duodenum (????)
Development time(??????)
To be adult (????)
Development for some time into the intestinal
mucosa(???????????)
???? 3???????????????
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Epidemiology
Ascaridia galli infection occurs in the rearing
chickens, and the chickens kept in cages Is less
common.
The nematode infects fowl of all ages, but the
chickens at three months of age is most
susceptible and the disease is more serious .
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Symptoms
In severe infections, intestinal blockage can
occur. Unthriftiness, drooping of the wings,
bleaching of the head and emaciation. It also
causes loss of blood, reduced blood
sugar content, increased urates, shrunken thymus
glands, retarded growth and greatly
increased mortality.
Heavy infection is the major cause of weight
depression and reduced egg production in poultry
husbandry.
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In heavy infections, adult worms may move up
the oviduct and be found in hens' eggs, and
sometimes they are also found in the
birds' feces.11
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Lesions
At early phase of infection, the intestinal
mucosa of chicken always appear bleeding or
hyperaemia(?????) and edema(??).The larva(??)
forms parasitic tubercle in parasitic location,
even arouse intestine rupture(???),
peritonitis (???). By cutting intestinal tract, a
large amount of parasites can be discovered. 
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?
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Depression(????)?pale mucosa(??????)
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Disheveled feathers(????)?Dysplasia(????)?Slow(???
?)
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?????
?
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Diagnosis
Definite diagnosis floating method with
saturated salt solution (???????)
or discovering large number of the parasite(??)
when cutting the small intestine (??)at
autopsy(??)
???????????????????????
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Treatment and Control
1?Treatment praziquantel(???) albendazole(?????
) Fenbendazole(????)
2?Comprehensive prevention(???????)I Regular de-w
orming Improvement of breeding and management
. Improve hygiene and the resistance Harmless
disposal of feces
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References
???.??????(???).???????????,2006
???.???(???).?????????
Ackert, JE (1940). "The large roundworm of
chickens". Vet. Med. 35 106108
Ashour, AA (1994). "Scanning electron microscopy
of Ascaridia galli (Schrank, 1788), Freeborn,
1923 and A. columbae (Linstow, 1903)". J Egypt
Soc Parasitol 24 (2) 34955.
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