Animal Nutrition Exam, Exams of Animal Biology

Download Animal Nutrition Exam and more Exams Animal Biology in PDF only on Docsity! ANS 313 EXAM 5 November 7, 1997 Lab: Name: Take-Home Exam. DUE Nov. 14 · You may work together. · Most of the answers are from class handouts and lectures, but a few will be found only in the textbook. · Points will be lost for messy writing and incorrect spelling! True/false (1 point each) 1. T F Animals require some arsenic in their diets. 2. T F Rickets is the failure (partial) of bone mineralization in a young growing animal. 3. T F Vitamin A is commonly added to the diet for almost all animals. Multiple choice (1 point each, choose only one best answer per question) 4. Dietary calcium deficiency is the major cause of: a. Nutritional secondary hyperparathyroidism (Big Head Disease in Horses) b. Milk fever in cows c. Developmental Orthopedic Disease in Horses d. All of the above 5. Antioxidants are important because: a. they keep the TCA cycle from running too fast b. they prevent formation of free radicals, which are harmful to the body c. they keep you from eating too many polyunsaturated fats d. all of the above Fill-in-the-blank (use full name of minerals; 1 point each) 6. A deficiency of this vitamin in humans causes stiffness and pain in the legs and partial paralysis. The South Pacific islanders so afflicted would say, “beri beri”. 7. Milk is low in this trace mineral, and feeding more of it to a sow does not make a difference. Therefore baby pigs should be supplemented with it. 8. Menadione is important for the formation of this blood clotting compound. 9. Give a specific example of an enzyme containing copper in animals. 10. Name a specific compound that is an example of a chelated mineral being used in livestock diets as a trace mineral supplement. 11. A heavy metal that interferes with metabolism when fed at higher levels but actually is essential for life in the parts per billion range. 12. A deficency of this mineral in ewes results in lambs born with thick, hairless, wrinkled skin (see picture in text). 13. This nutrient is important for muscle function, cellular regulation as a “second messenger”, and is found in high concentrations in legumes. 14. Form of vitamin A that is effective in preventing night blindness. 15. The mineral that is both essential for animal life and also toxic that interferes with copper metabolism and causes diarrhea when consumed in excess. It is commonly high in organic soils. 16. Excessive consumption of this mineral causes chalky, mottled teeth. 17. This micronutrient is a component of hemoglobin and plays a key role in the oxygen-carrying ability of red blood cells; hence, a deficiency causes anemia. 18. Name the vitamin involved in the methyl-group transfer associated with converting propionate to glucose. 19. The body organ in which 25-hydroxy-vitamin-D is converted to 1,25- dihydroxy-vitamin- D (calcitriol), which promotes calcium absorption.. 20. A relatively hairless species that cannot synthesize its own ascorbic acid and instead has been known to rely on lemon juice to prevent deficiency signs, such as scurvy. 21. Chronic iodine deficiency in adult animals is characterized by this symptom. 22. Name of the most prevalent precursor of Vitamin A. 23. A lack of this vitamin causes skin problems, intestinal problems, and eventually you go crazy. 24. Dicoumarol is an antagonist of this nutrient. 25. Fat-soluble anti-oxidant that is especially important if you eat lots of MacDonald’s french fries or potato chips fried in vegetable oil. 26. The mineral needed for the synthesis of vitamin B12. 27. Part of “FAD” and “FADH2”, this micronutrient should be supplemented to most nonruminants unless they consume lots of green leafy plant foods. 28. A compound in raw eggs interferes with this coenzyme that is needed for carboxylation and decarboxylation reactions. 29. This nutrient helps get rid of lipid peroxides, but it can cause alkali disease in cattle when consumed in high quantities. 30. A water-soluble vitamin that is so tightly bound to proteins in plant foodstuffs such as corn grain that it is often poorly available to animals. 31. The major extracellular cation. 32. A deficiency of this vitamin can cause anorexia (poor appetite), xerophthalmia (bug eyes), constriction of the optic nerve, degeneration of the testes, and incoordination, among other things. 33. You do not need to feed cattle or horses this vitamin, but a dietary deficiency of it would cause pigs to walk funny and look sick. 34. The scientific (latin) name that means “low blood magnesium”; which when severe is seen clinically as “grass tetany”. 35. The clinical name describing the loss of bone tissue in older animals. This problem includes both bone demineralization and loss of the bone organic matrix and is a major problem in older humans. 36. The plant compound that serves as the precursor for ergocalciferol. 37. A good source of available P for animals that need a P supplement. 38. A feed contains 400 ppm Mn, what % Mn does it have? 39. One thing you can always get “free” from your feed salesperson, but sometimes it costs you a lot of money. 40. This trace mineral should always be supplemented to animals in Michigan but supplementation is usually not necessary in western Nebraska. 2