with the additional information my guess would be that she has either
1. EYP..
2. LL..
EYP, no treatment available, when it turns septic the birds die, not something that will pass onto your other birds
LL,
LYMPHOID LEUKOSIS
Big liver disease, LL, lymphatic leukosis, visceral lymphoma (one disease in the leukosis/sarcoma group)
Incidence:
Common world wide
System affected:
Entire body
Incubation period:
14 days
Progression:
Usually chronic
Virally induced cloacal malignancy of the bursal-dependent lymphoid system.
Caused by certain members of the leucosis/sarcoma group of avian retroviruses.
Occurs naturally only in chickens.
Virus.
Affecting chickens
Transmitted through egg or brought in from adult infected birds to young
Egg borne or transmitted to very young chicks from infected older birds.
Symptoms:
In birds 16 weeks or older (especially those nearing maturity): depression, death
In birds over 6 months of age, death without symptoms or pale shrivelled comb, loss of appetite, diarrhea, and emaciation. Weakness; sometimes bluish comb, vent feathers spotted with white (urates) or green (bile); sometimes you can feel enlarged kidney, cloacal bursa, liver, or nodular tumors through skin
In hens
.. reduced egg production, enlarge abdomen, loose droppings
Weight loss.
Green droppings, tumors, enlarged liver.
Sick birds usually die.
Deformed, thickened leg bones- sometimes
Percentage affected:
Sporadic
Mortality:
Up to 25 percent (rapidly following first symptoms)
Cause:
A group of retroviruses that primarily infect chickens and do not live long off a birds body
Prevention:
Defies good management, but can be controlled by buying and breeding resistant strains (heavier meat birds are more resistant than lighter laying birds)
Dont mix younger birds with older birds
Identify and eliminating breeders that produce infected chicks
Not reusing chick boxes
Raising chicks on wire
Thoroughly cleaning facilities before introducing new birds; thoroughly cleaning and disinfecting incubator and brooder between hatches
Controlling blood sucking parasites
Brood away from older chicks
Isolate sick or infected birds, and separation of adult from young birds.
Avoid using the same needle for flock wide injections
Treatment
There is no treatment for lymphoid leukosis. Although the disease cannot be prevented completely, there are certain steps that can be taken to help control the level of infection within a flock. Some steps are:
· Buy resistant strains of birds since genetic resistance is a deterrent,
· Brood in isolation and do not mix birds of different ages, especially through six weeks of age,
· Keep the incubator clean and disinfected,
· Control blood-sucking parasites,
· Good care, limiting stress, and adequate ration will be of benefit.