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" "1

   Admin 31, 2008 10:16 pm

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** ( ) :-
1- :- Broiler's poduction .


40 45 ..broiler's farm ..
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Air borne infection or Wind borne infection.
:
Newcastle Disease, Infectious Bronchitis ,Infectious Laryngotracheitis and Infectious Bursal Disease

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6 - :- Ventilation ( )
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2 - ... predispsing factors for droplets borne infection , coccidiosis and worm infestation .
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4 - Heat stasis ..
70 % ...

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*** ( ) causing dust borne infection .

15 - 25% . ( 15 - 25 % )..
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Ventilation should be used as a major management tool
..to provide the optimum micro-environment per bird
Controlled ventilation can do a great deal to dilute pathogenic organisms as well as provide an optimum micro-environment when ventilation equipment is designed and operated to give correct air speed and direction ....
The birds optimum environmental temperature and
humidity is in the range of 22 27C and 4060% relative humidity ...


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1 3 6

1 - 35 2,5 3,5 4,5
2 - 20 1.8 2,5 3,5
3 - 10 0.8 1.4 2
4 - 0.6 1 1.5

The ventilation system should provide aminimum of 3.6 to 4 m3 of fresh air per kg body weight and hour.....
This amount may not be sufficient under hot conditions,,, when rates of 4.5m3 / bird / hour may be needed, so
supplementary ventilators should kept on stand-by, or cooling systems should be installed.....
3000 12000 ...
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