Lancaster farming. (Lancaster, Pa., etc.) 1955-current, April 08, 2000, Image 264

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    (ljl F,,m i (Continued from Peg# 50) Tablet. Common infectious diseases of poultry
111 HIM Disease Health effects on Lifespan away from
poultry birds
/ « ~eopl•
v,hlc, “ x Infectious Bursal disease Lowered resistance to Months
I ) J T7~j other diseases
Coccidiosis Diarrhea, death Months
** Duck plague Diarrhea, death Days
Fowl cholera Fatal pneumonia Weeks
(p-Tl Firm 2j/ EMaifljifr I I owl cor V za Swelling around eyes, Hours to days
.! , Lrf . iT I'lttirffrnr I p«dtiy<quipnieni ( nasal discharge
11111 IKJIn 1 influenza Severe fever, death Days to weeks
WrHm I llllil'*-'* * Infectious Choking, death Days
* Laryngotracheitis
jf-ri Fiim 4 Marek's disease Wasting, paralysis Weeks
[|, Newcastle disease Colds, paralysis Days to weeks
m|||||in Mycoplasmosis Decreased egg Hours to days
IiZBHsjUJ production, poor growth |
Figure i How microb.. n. w i Salmonellosis Deaths soon after Weeks
Avian tuberculosis Fatal wasting Years
Many germs die in 2 or 3 days but, under certain condi
tions (such as cold damp surroundings), they survive much
longer. Even with a short, 1-day survival, germs can travel
several hundred miles when clinging to drivers, trucks,
chicken crates, or egg-filler flats. Table 1 shows approxi
mately how long germs can survive in empty chicken
houses, on loading docks, and in other places where there
are no chickens.
Source: Nathaniel L. Tablante, DVM, MPVM, MS, Diplo
mate ACPV, Virginia-Maryland Regional College of Veteri
nary Medicine, University of Maryland-LESREC.
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Putting new birds, including young chicks (day-old to 2
weeks) in contact with droppings, feathers, dust and debris
left over from previous flocks can be a potentially dangerous
practice. Microbes can significantly increase to dangerous
levels from one flock to another.
Raising different types of fowl on one farm can be risky
from the standpoint of disease. Microbes that cause little or
no harm to one type of fowl can be devastating to another.
For instance, influenza viruses, though common and usually
not bothersome in waterfowl, can produce severe disease in
chickens and turkeys.
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