Page 47 - poultry farming
P. 47

Black Head



          It is caused by Protozoa. It affects the liver and the caecum.


          Signs and symptoms of blackhead


            Sulphur coloured diarrhoea.

            Dark purple head.

            Loss of appetite

            Darkening of the skin and wattle.

            Yellow green circular wounds (lesions)



          Prevention and control of Blackhead


            Avoid overcrowding.

            Separate sick birds from other chicken
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