with Rationales 2026-2027 Update.
Which of the following do livestock utilize to transport nutrients and metabolic waste, aid in
chemical reactions and help regulate body temperature?
- Minerals
- Water
- Carbohydrates
- Protein
- Lipids - Answer - Water
Which of the following components of an animal feed contains carbon, hydrogen, oxygen, and
nitrogen and is composed of amino acids?
- Vitamins
- Proteins
- Carbohydrates
- Minerals
- Lipids - Answer - Proteins
Which of the following components of an animal feed is a hydrophobic molecule that contains
carbon, hydrogen, and oxygen?
- Carbohydrates
- Lipids
- Proteins
- Minerals
- Vitamins - Answer - Lipids
Lipids have greater energy density than other nutrients: 4.20 kcal/g.
- True
- False - Answer - False
Acetic, propionic, and butyric acid are the three volatile fatty acid end products of carbohydrate
digestion in the ruminant and volatile fatty acids are the energy source for ruminants, similar to
glucose in monogastrics.
- True
- False - Answer - True
,Which of the following vitamins is found in green leafy forages and stored in the liver?
- Vitamin E
- Vitamin D
- Vitamin A
- Vitamin B
- Vitamin K - Answer - Vitamin A
Which of the following vitamins if deficient can cause muscular dystrophy in ruminants and
affects nerves and muscles?
- Vitamin K
- Vitamin D
- Vitamin B
- Vitamin A
- Vitamin E - Answer - Vitamin E
Which of the following vitamins is needed for normal blood clotting and can be sourced in green
leafy plants?
- Vitamin A
- Vitamin K
- Vitamin C
- Vitamin B
- Vitamin D - Answer - Vitamin K
Which vitamin is thought to be provided by the sunlight and enhances intestinal absorption,
mobilization and retention of Ca and P in the body? Deficiencies in this vitamin can lead to
rickets or urinary calculi.
- Vitamin C
- Vitamin A
- Vitamin B
- Vitamin E
- Vitamin D - Answer - Vitamin D
Which of the following is needed for synthesis of the thyroid hormones and common signs of
deficiency is goiter-swelling under the jaw?
- Copper
, - Iodine
- Magnesium
- Calcium
- Sulfur - Answer - Iodine
Carbohydrates contain greater energy density than fats.
- True
- False - Answer - False
Feed additives could be used for fly control.
- True
- False - Answer - True
Which of the following fatty acids contain double bonds between carbon atoms?
- Unsaturated fatty acids
- Saturated fatty acids - Answer - Unsaturated fatty acids
Which type of minerals are required in small amounts and are fed in mg/kg or ppm basis?
- Macro minerals
- Micro minerals - Answer - Micro minerals
Mineral represents the organic component of the dry matter.
- True
- False - Answer - False
Which nutrient contains Nitrogen (N) in its chemical structure?
- Protein
- Carbohydrate
- Fat - Answer - Protein
Animal protein is a high-quality protein.
- True
- False - Answer - True
Which nutrient is formed by photosynthesis in plants?