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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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Bacillary white diarrhea in poultry

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 For Urdu Click [ HERE ] Bacillary white diarrhea This disease is also known as pullorum disease as the bacterium named as Salmonella pullorum that causes this disease. It is fatal septicemia in young chicks. •Causes White diarrhea/pullorum disease is caused by bacterium“Salmonella pullorum” •Clinical signs Its symptoms include: Somnolence Weakness Loss of appetite Chalky white diarrhrea Stained greenish brown in and around vent •Treatment Following medication should be done to cure this disease. Enrofloxacin Parental injections Oral liquids Supportive therapy   Bumble foot/Pododermatitis in poultry
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