Facilitated Diffusion

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What is facilitated diffusion? In membrane, there are protein channels (pores) that allow polar molecules (soluble in water but not soluble in lipids) to move through them. The molecules that move through these channels never come into contact with the hydrophobic layer or the membrane's polar surface because these channels provide a continuous pathway for molecules that are moving through them. In this type of diffusion, like simple diffusion, no energy is consumed. Large and polar molecules require help to pass through the membrane. This help is done by a type of protein called carrier (transport) protein . To pass through the membrane, a molecules binds (temporarily) with carries protein in lipid bilayer and is transported from an area of higher concentration to an area of lower concentration.  Related topics: Simple Diffusion
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Bacterial diseases of poultry-infectious coryza/fowl coryza-causes-symptoms-treatment

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           For Urdu click [Here]


BACTERIAL DISEASES OF POULTRY

Infectious Coryza

•Fowl Coryza

It is highly contagious disease. It is an acute disease of upper respiratory tract of chickens. With the passage of time it turns into chronic respiratory disease.

•Etiology/Causes

It is an infectious disease caused by a bacterium named as Haemophilus paragallinarium .This bacterium is small cocoid or gram negative rod shaped .It is non motile and exhibits dipolar staining.

•Clinical signs

Its clinical signs includ;

Serous to mucoid nasal discharges with foul smelling

Facial edema

Conjunctivitis

Swollen wattles

Diarrhea

Reduced feed and water consumption

•Treatment and control

If symptoms are noted then following medication should be done to treat and control this disease.

Gentamicin,Pencillin and Streptomycin should be delivered in feed or drinking water and proper disinfection should be done.



 White diarrhea in poultry

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