ADSC 3300 Lecture 5: ADSC 3300 Lecture 3:1
8 Mar 2017
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*recorded lectures to cover for missed days: minerals, vitamins, online quiz. *quiz starts on friday 3/3 starts with slide ideal protein concept. Ideal protein concept: dietary condition where all aa are equally limiting and the pattern in the diet is an exact match to the requirement of the animal. (quiz) Different species secrete nitrogen in different forms (quiz) *for this to happen, the amine group (nh3) must be removed. Fish secrete ammonia: most of the time, in an unlimited water environment. Birds secrete uric acid which takes energy: uric acid is insoluble in water and crystalizes out, if you"re a bird, you don"t want excess water weighing you down, less toxic than ammonia and urea. Mammals secrete urea: less toxic than ammonia. Purines is how we get rid of amino acids. Pigs: undigested dietary protein and any endogenous losses is in the feces (about 25% in pig, about 75% nitrogen excreted in urine is urea (nh3)
