ANSC 303 1st Edition Lecture 22Outline of Last Lecture Outline of Current Lecture I. First Limiting Amino Acidsa. Swineb. Chickensc. Turkeysd. Horsese. HumansII. Crystalline AAIII. Protein Requirements:Current LectureI. First Limiting Amino AcidA. Essential amino acid in feedsB. Lowest amount relative to the animal's requirementC. This is the AA that the animal is likely to run out of firstD. Swinea. Lysineb. Threoninec. Tryptophan d. Methionine+cystineE. Chickensa. Methionine+Cystineb. Lysinec. Threonined. TryptophanF. Turkeysa. Lysine and Methionine+Cystine equallyb. Threoninec. TryptophanG. Horsesa. LysineThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.b. Threonine or methionineH. Humansa. Likely:b. Lysinec. Tryptophand. Threoninee. Methionine+cystine I. If AA are not needed, they go through deaminationa. DO NOT GO THROUGH PROTEIN SYNTHESISb. If, excess threonine is in the diet, it is deaminatedJ. In order to add the first limiting amino acid, more protein was added a. This adds all of the AA, not the only ones that are neededb. To correct this, crystalline forms of AA are added to the feedc. Crystalline AA are singular AAII. Crystalline AAA. Produced by microbial fermentationB. Permits use of lower protein dietsa. Less crude proteinC. Digestion and absorption needs non intact proteinD. These are bitterE. Available in L and D isomersa. Some animals can only use one form b. Methionine is combined (cannot be separated)III. Protein RequirementsA. Varies by:a. Speciesb. Sex (females more)c. Geneticsd. Stages of life (ranked by highest need to lowest need)i. Lactation or Growthii. Pregnancyiii. Workiv.
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