Grade 12 | Digestibility of feed | Digestibility Coefficient Calculations |Agricultural Sciences

At the end of the lesson you should know and understand the following content:
• Digestibility of feed
• The concepts: digestibility and digestibility coefficient of feeds
• The factors that affect/influence/determine the digestibility of feeds
• The methods of improving/increasing digestibility of feeds
• Calculation and interpretation of the digestibility coefficient of a feed
• Quality of feed: biological value of proteins
• The concepts: biological value (BV), essential amino acid index and ideal
• proteins.
• The importance of animal proteins in rations
• The evaluation of feed protein in terms of biological value, for example egg and milk
• Energy value of feed
• The units in which energy value is expressed
• The terminology: gross energy, metabolic energy, digestible and nett energy
• The purpose/aims of calculating energy value of the feed
• Calculation of feed energy flow and interpretation of the results

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