All Free Veterinary Science MCQs with Answers

• A. To replace all milk from the ewe
• B. To provide extra nutrients inaccessible to adult sheep
• C. To prevent lambs from developing rumen function
• D. To increase the gestation length of the ewe

Explanation: Creep feeding allows young lambs to consume a concentrated or high-quality ration while limiting access by ewes.

• A. Milk fever
• B. Copper deficiency
• C. Urea toxicity
• D. Simple indigestion

Explanation: Excess dietary urea is rapidly converted to ammonia in the rumen, and toxic ammonia absorption can cause tremors, salivation…

• A. It eliminates the need for pasture observation
• B. It makes supplementary minerals unnecessary
• C. It prevents all internal parasite transmission
• D. It allows planned recovery of grazed pasture

Explanation: Rotational grazing provides rest periods that allow pasture plants to recover and produce new growth.

• A. It has consumed starter feed consistently for several days
• B. It has developed a long hair coat
• C. It drinks more milk than other calves
• D. It has a completely empty rumen after feeding

Explanation: Consistent intake of calf starter indicates that fermentation and rumen development are sufficient to support life after milk removal.

• A. It increases the fat percentage of colostrum
• B. It reduces exposure of the cow and calf to contamination
• C. It prevents every case of dystocia
• D. It removes the need for post-calving observation

Explanation: A clean calving area lowers exposure to environmental pathogens during a period when the cow and newborn calf are vulnerable.

• A. It removes all lignin from the plant material
• B. It converts the straw into a high-fat concentrate
• C. It increases its nitrogen content and improves digestibility
• D. It prevents the straw from being fermented in the rumen

Explanation: Urea treatment supplies ammonia, which increases the nitrogen content and can improve the digestibility and intake of fibrous straw.

• A. Overfeeding energy throughout the whole year
• B. Using rams with very large birth-weight genetics
• C. Restricting water during the final month
• D. Monitoring nutrition and fetal numbers before lambing

Explanation: Late-pregnancy nutrition should be adjusted according to fetal number and ewe condition, because oversized or poorly positioned lambs…

• A. To assess reproductive ability before mating
• B. To estimate the butterfat percentage of future milk
• C. To determine the age of every cow in the herd
• D. To increase the length of the breeding season

Explanation: A breeding soundness examination evaluates physical fitness, reproductive organs, semen quality and libido.

• A. Prolactin
• B. Oxytocin
• C. Progesterone
• D. Follicle-stimulating hormone

Explanation: Oxytocin causes contraction of the myoepithelial cells surrounding the alveoli, forcing milk into the ducts.

• A. To increase its lactose content
• B. To improve its fat percentage
• C. To slow bacterial multiplication
• D. To stimulate further milk secretion

Explanation: Rapid cooling slows the growth of bacteria that can spoil milk and reduce its hygienic quality.

• A. Reduce energy density of the ration
• B. Delay access to drinking water
• C. Withhold concentrate feed completely
• D. Provide greater energy and nutrient support

Explanation: Multiple fetuses increase the ewe's nutrient requirements, especially during late pregnancy when abdominal space also limits feed intake.

• A. To provide permanent individual identification
• B. To increase the animal's appetite
• C. To prevent all infectious diseases
• D. To determine the animal's sex hormonally

Explanation: An ear tag links an individual animal with its health, breeding, production and treatment records.

• A. Rapid loss of all plant protein before harvest
• B. Clostridial fermentation and production of poor-quality silage
• C. Complete prevention of lactic acid formation
• D. Permanent increase in forage fibre digestibility

Explanation: Very wet forage can undergo undesirable clostridial fermentation, producing foul-smelling, unstable silage and nutrient losses.

• A. Give only dry grain
• B. Withhold all fluids for 24 hours
• C. Provide oral fluids and electrolytes
• D. Remove milk permanently

Explanation: Oral fluids and electrolytes help replace water and salts lost through diarrhoea when the calf can still suck.

• A. It causes ovulation of every follicle
• B. It permanently suppresses ovarian activity
• C. It maintains pregnancy by increasing progesterone
• D. It causes luteolysis and permits a new cycle

Explanation: Prostaglandin F2 alpha regresses a responsive corpus luteum, causing progesterone to fall and allowing the next oestrous cycle to begin.

• A. Pregnancy toxemia
• B. White muscle disease
• C. Contagious ovine epididymitis
• D. Photosensitisation

Explanation: Pregnancy toxemia develops when energy demand exceeds energy intake, especially in heavily pregnant ewes carrying twins or triplets.

• A. To destroy all milk enzymes permanently
• B. To reduce pathogenic microorganisms while preserving quality
• C. To increase the natural milk fat percentage
• D. To convert lactose into mineral salts

Explanation: Pasteurisation uses controlled heat to reduce disease-causing microorganisms and improve safety without seriously damaging the normal…

• A. Bulk feed-delivery invoices
• B. Daily shed-cleaning records
• C. Individual breeding and pregnancy records
• D. Routine hoof-trimming dates alone

Explanation: Individual breeding and pregnancy records show services, return to oestrus, conception results and calving history for each cow.

• A. Bursa of Fabricius
• B. Thymus
• C. Spleen
• D. Caecal tonsils

Explanation: The bursa of Fabricius is the primary lymphoid organ where B lymphocytes mature in birds.

• A. Infundibulum
• B. Shell gland
• C. Isthmus
• D. Magnum

Explanation: The shell gland, also called the uterus, deposits most of the calcium carbonate that forms the egg shell.