ANFS251 Lecture Notes - Lecture 10: Infertility, Soybean, Pepsin
12 Mar 2019
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Animals must be able to convert protein into amino acids that they can absorb. Protein sources in feeds are usually 75-80% digestible. Protein sources in animal feeds are broken down into amino acids by acids in the stomach. Chymotrypsin and trypsin in the small intestine. Ability to digest various protein sources varies. Plant protein sources can contain various inhibitors that affect protein utilization. Amino acids are absorbed in anterior portion of the small intestine, transported in blood and used to make animal protein. Proteins associated with feathers and hooves are slowly digested. Relative biological value (bv) of a protein source depends on 2 things . How well the animal"s digestive process is and can convert the proteins they need into amino acids. How the balance of amino acids compares with their need for amino acids. Biological value - the portion of aa that are retained by the animal.
