ANN 111: Principles of Animal Nutrition and Feed Technology (2+1)

ORGANOLEPTIC EVALUATION - VISION

Vision (Visual evaluation)

• Examine the feedstuffs for the natural colours, consistency, presence of foreign materials, mould growth, cake and clump formation and any other abnormalities.
• Mouldy grains will have greenish, grayish or blackish discolouration especially at the germinal tip.
• Adulteration of groundnut oil cake with rice bran or any other cheaper oil cakes & fish with prawn heads, crabs, squilla, sheels, etc. can be detected by careful visual examination.