Free Animal Nutrition and Feeding MCQs with Answers
59 Animal Nutrition and Feeding MCQs from Veterinary Science, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Covers carbohydrates, proteins, lipids, minerals, vitamins and water, along with digestion, absorption and energy metabolism in domestic animals. Questions involve feed evaluation, nutrient requirements, ration formulation, forage and concentrate feeds, deficiency disorders, and the differences between ruminant and monogastric nutrition.
Last updated
59 questions · page 1 of 3
- A. Propionate
- B. Acetate
- C. Butyrate
- D. Valerate
Explanation: Propionate is absorbed from the rumen and converted in the liver into glucose.
Correct answer: Propionate- A. Provide long-chain fatty acids
- B. Supply nitrogen to rumen microbes
- C. Increase dietary calcium absorption
- D. Prevent oxidation of vitamin A
Explanation: Rumen microbes use the nitrogen from urea to form microbial protein, which later supplies amino acids to the animal.
Correct answer: Supply nitrogen to rumen microbes- A. Is digested only in the rumen
- B. Cannot be digested by the animal
- C. Escapes rumen breakdown and is digested later
- D. Is synthesized only by rumen protozoa
Explanation: Rumen undegradable protein passes through the rumen without extensive microbial degradation and is digested mainly in the abomasum and…
Correct answer: Escapes rumen breakdown and is digested later- A. Positive energy balance
- B. Reduced rumen microbial activity alone
- C. Excessive phosphorus intake
- D. Negative energy balance
Explanation: Early lactation often creates negative energy balance because milk production demands exceed feed energy intake.
Correct answer: Negative energy balance- A. Vitamin D
- B. Vitamin A
- C. Vitamin E
- D. Vitamin K
Explanation: Vitamin D promotes intestinal absorption of calcium and phosphorus and supports normal bone mineralization.
Correct answer: Vitamin D- A. Hypoglycemia during weaning
- B. Hypocalcemia around calving
- C. Hypernatremia after exercise
- D. Copper toxicity during pregnancy
Explanation: Milk fever, or parturient paresis, results mainly from a sudden fall in blood calcium around parturition when calcium secretion in milk…
Correct answer: Hypocalcemia around calving- A. Fecal and saliva losses
- B. Protein and starch losses
- C. Urinary and gaseous losses
- D. Mineral and vitamin losses
Explanation: Metabolizable energy equals digestible energy minus energy lost in urine and combustible gases such as methane.
Correct answer: Urinary and gaseous losses- A. Nitrogen multiplied by 4.25
- B. Nitrogen multiplied by 5.00
- C. Nitrogen multiplied by 8.50
- D. Nitrogen multiplied by 6.25
Explanation: Crude protein is conventionally estimated as nitrogen multiplied by 6.25 because proteins contain about 16 percent nitrogen.
Correct answer: Nitrogen multiplied by 6.25- A. Neutral detergent fiber
- B. Soluble sugar
- C. Ether extract
- D. Crude ash
Explanation: Neutral detergent fiber mainly represents structural cell wall components and is associated with rumen fill and slower passage.
Correct answer: Neutral detergent fiber- A. It is the main mineral in eggshells
- B. It is a sulfur-containing essential amino acid
- C. It directly supplies intestinal bacteria
- D. It replaces all dietary energy sources
Explanation: Methionine is an essential sulfur-containing amino acid needed for protein synthesis and other metabolic functions in poultry.
Correct answer: It is a sulfur-containing essential amino acid- A. Undigested protein multiplied by 2.25
- B. Digestible ash multiplied by 2.25
- C. Digestible ether extract multiplied by 2.25
- D. Metabolizable energy multiplied by 2.25
Explanation: TDN includes digestible crude protein, fibre, nitrogen-free extract, and ether extract.
Correct answer: Digestible ether extract multiplied by 2.25- A. Undigested plant lignin
- B. Dietary mineral salts
- C. Absorbed fatty acids
- D. Fermentable carbohydrates
Explanation: Rumen microbes use ammonia as a nitrogen source and fermentable carbohydrates as energy and carbon sources.
Correct answer: Fermentable carbohydrates- A. Small intestine
- B. Large intestine
- C. Oesophageal region
- D. Urinary bladder
Explanation: Pancreatic amylase and intestinal enzymes digest starch mainly in the small intestine, where glucose is absorbed.
Correct answer: Small intestine- A. Vitamin E
- B. Vitamin K
- C. Vitamin C
- D. Vitamin B12
Explanation: Vitamin K is required for the synthesis of important clotting factors in the liver.
Correct answer: Vitamin K- A. Vitamin A toxicity
- B. Simple indigestion from hay
- C. Rumen acidosis
- D. Chronic salt deficiency
Explanation: Rapid grain feeding increases ruminal fermentation and acid production, which can lower rumen pH and cause acidosis.
Correct answer: Rumen acidosis- A. Bile acid
- B. Uric acid
- C. Hydrochloric acid
- D. Lactic acid
Explanation: Lactic acid bacteria convert plant sugars into lactic acid, rapidly lowering silage pH and inhibiting spoilage organisms.
Correct answer: Lactic acid17. Which essential fatty acid is particularly important for normal growth and reproduction in poultry?
- A. Linoleic acid
- B. Palmitic acid
- C. Stearic acid
- D. Butyric acid
Explanation: Linoleic acid is an essential polyunsaturated fatty acid for poultry and supports growth, feather development, and reproductive…
Correct answer: Linoleic acid- A. Vitamin D3
- B. Vitamin B12
- C. Vitamin K2
- D. Folic acid
Explanation: Rumen microbes require cobalt for synthesis of vitamin B12, which supports propionate metabolism and other metabolic reactions.
Correct answer: Vitamin B12- A. Adding limestone powder
- B. Adding wheat straw
- C. Adding vegetable oil
- D. Adding common salt
Explanation: Vegetable oil contains much more energy per unit weight than carbohydrate, so it increases ration energy density.
Correct answer: Adding vegetable oil20. Which volatile fatty acid is produced in the greatest proportion during normal rumen fermentation?
- A. Valerate
- B. Propionate
- C. Butyrate
- D. Acetate
Explanation: Acetate is usually the predominant volatile fatty acid formed in the rumen, especially when forage is a major part of the diet.
Correct answer: AcetateAnimal Nutrition and Feeding MCQs: common questions
Are these Animal Nutrition and Feeding MCQs free?
Yes. All Animal Nutrition and Feeding MCQs from Veterinary Science are free on TestUstad, with unlimited attempts and no account needed. Nothing on this page is a sample or a trial.
How many Animal Nutrition and Feeding MCQs are on this page?
There are 59 Animal Nutrition and Feeding MCQs in the Veterinary Science bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Animal Nutrition and Feeding MCQ have an explanation?
Yes. Each Animal Nutrition and Feeding question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Animal Nutrition and Feeding test?
Yes. The practice button on this page starts a free Animal Nutrition and Feeding test drawn from the Veterinary Science bank. It marks each answer instantly, gives you a score at the end, and can be retaken as many times as you like.