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Urea is an example of non-protein nitrogen (NPN) and can contribute nitrogen for ruminal microorganisms to synthesize amino acids.

Which one of the following vitamins is not a water soluble vitamin?(A) Riboflavin(B) Vitamin B9(C) Niacin(D) Vitamin K (E) Choline

Different from fat soluble vitamins, water soluble vitamins can be metabolically excreted via both urine and feces.

Prostaglandins belong to one of the following groups. Which group is it?(A) Eicosanoids(B) Steroids(C) Waxes(D) Sphingolipids(E) Phospholipids

A common precursor of vitamin A in animal feeds is: (A) Carnosine(B) Carotene(C) Cholesterol(D) Vitamin A(E) None of these above

Dietary deficiency of one or more of the following vitamins can cause chicken perosis.(A) Only Vitamin B2(B) Only Vitamin B3(C) Only Vitamin B4(D) Only Vitamin B7(E) Either A, B, or C(F) Either B, C, or D(G) Either A, B, or D(H) Either niacin, choline, or cobalamin

The clinical symptoms of human vitamin B3 deficiency include cheilosis, angular cheilitis, stomatitis, and glossitis. 

A chemical name for Vitamin B3 is riboflavin.

If a normal barley grain (a ground one) is fed to a chicken or a beef cattle, which animal will produce more gaseous digestion products or gaseous energy from it?(A) The beef cattle will produce more gaseous digestion products than the chicken will.(B) It’s hard to tell.(C) The chicken will produce more gaseous digestion products than the beef cattle will.(D) The chicken and the beef cattle will produce same amount of gaseous digestion products because the barley fed was the same.(E) The beef cattle will produce more gross energy than the chicken will.

If a normal soybean meal is fed to a chicken or a beef cattle, which animal can get more digestible energy from it?(A) The beef cattle will get more digestible energy than the chicken can get. (B) It’s hard to tell.(C) The chicken will get more digestible energy than the beef cattle can get. (D) The chicken and the beef cattle will get same amount of digestible energy because the soybean meal fed was the same.(E) The beef cattle will get more gross energy than the chicken will get.