An-Najah National University 
                Faculty of Agriculture and Veterinary Medicine 
                           
                      Animal Nutrition  
                        Exam 1 
         
         
          1.  Choose the best answer:                                                  (40 points; Ilo 1-4) 
             1.  The feed nutrients that don’t  produce energy are: 
              a)  Vitamins. Minerals. Carbohydrates 
              b)  Carbohydrates, proteins, lipids 
              c)  Carbohydrates, lipids, vitamins 
              d)  Vitamins, minerals and water. 
                 
             2.  Animals get most of its energy requirements from: 
              a)  Proteins  
              b)  Lipids 
              c)  Carbohydrates 
              d)  Water. 
                 
             3.  Compared to protein and carbohydrates 1 gram of fat gives how 
              many times kcal: 
              a)  1 
              b)  6.25 
              c)  2.25 
              d)  9 
                 
             4.  Fats are not included in animal diet at high level because: 
              a)  It is of high energy 
              b)  Becomes rancid 
              c)  Reducing diets appetite 
              d)  Reducing dustiness  
                 
             5.  The followings are essential amino acids except: 
              a)  Glutamic acid 
              b)  Lysine 
              c)  Methionine 
              d)  Threonine 
                 
             6.  Plant proteins are of lower quality than animal proteins because: 
              a)  Of low digestibility 
              b)  Of the imbalanced amino acids 
              c)  Of low biological value 
              d)  All of the above 
         
         
             7.  Cereals are: 
              a)  high in Ca 
              b)  Low in lysine 
              c)  High in P 
              d)  B+C 
         
             8.  Starch digestibility is lowered because of: 
              a)  Presence of prolamines  
              b)  Presence of tannins 
              c)  Crystilinity  
              d)  All of them. 
         
             9.  The followings are micro minerals except: 
              a)  Iron 
              b)  Sulfur 
              c)  Iodine 
              d)  Zinc. 
                 
             10. The following are water soluble vitamins except: 
              a)  Vitamin C 
              b)  Vitamin B12 
              c)  Vitamin K 
              d)  Niacin. 
                 
             11. The cereal grain of highest fiber and best protein quality is: 
              a)  wheat 
              b)  barley  
              c)  sorghum 
              d)  oat. 
         
             12. Concentrates are characterized by its: 
              a)  Low digestibility 
              b)  Low protein content 
              c)  High fiber 
              d)  Of high TDN value. 
                 
             13. The followings are concentrated feeds except: 
              a)  Silage 
              b)  Wheat grain 
              c)  Oat grain 
              d)  Sorghum. 
                 
             14. An example of protein supplement is: 
              a)  Bone meal 
              b)  Corn gluten meal 
              c)  DCP 
              d)  All of them. 
             15. The tryptophan is a precursor of: 
              a)  Riboflavin  
              b)  Thiamin  
              c)  Niacin 
              d)  pyridoxine. 
         
             16. Which one is fit the ruminants digestive tract? 
              a)  Rumen  
              b)  Gizzard  
              c)  Proventriculus  
              d)  Crop. 
         
             17. The enzyme involved in fatty acid metabolism is: 
              a)  Lipase 
              b)  Amylase 
              c)  Hormone sensitive lipase 
              d)  All of them. 
         
             18. Lipids are absorbed in the form of: 
              a)  Glucose 
              b)  Fructose 
              c)  Phospholipids 
              d)  Chylomicrons. 
                 
             19. The nitrogen free extract is: 
              a)  Part of protein 
              b)  Non protein nitrogen 
              c)  As starch 
              d)  Type of lipids. 
                 
             20. The most popular processing method in Palestine is: 
              a)  Flaking  
              b)  Grinding  
              c)  Extruding  
              d)   Steaming.  
                 
             21. The true digestibility of crude fiber is: 
              a)  Lower than apparent digestibility 
              b)  Higher than apparent digestibility 
              c)  Are the same 
              d)  Non of the above. 
                 
             22. The procedure used to determine feed nitrogen is the: 
              a)  Solvent method 
              b)  Extraction method 
              c)  Detergent analysis 
              d)  kjeldahl procedure. 
         
                             23. Sources of protein to non ruminants are: 
                                 a)  Non protein nitrogen sources 
                                 b)  Only of animal origin 
                                 c)  Nitrogen free extract 
                                 d)  True proteins. 
                                     
                             24. Very fine grinding leads to the following except: 
                                 a)  Losses of feed 
                                 b)  Increase dustiness 
                                 c)  Increase digestibility 
                                 d)  Digestive tract ulcers. 
                   
                             25. Total digestible nutrients is a measure of: 
                                 a)  Energy  
                                 b)  Digestibility  
                                 c)  Feed nutritive value 
                                 d)  All of the above. 
                   
                   
                   
                  Answer sheet 
                   
                  No.      a       b        c       d        No.     a        b       c       d 
                  1                                          14                                
                  2                                          15                                
                  3                                          16                                
                  4                                          17                                
                  5                                          18                                
                  6                                          19                                
                  7                                          20                                
                  8                                          21                                
                  9                                          22                                
                  10                                         23                                
                  11                                         24                                
                  12                                         25                                
                  13