Dairy Engineering Mcqs

Q:

Corn silage stored in sealed uprights should be ensiled at what moisture?

A) No less than 40 percent moisture B) No less than 50 percent moisture
C) No less than 60 percent moisture D) No less than 30 percent moisture
 
Answer & Explanation Answer: C) No less than 60 percent moisture

Explanation: Corn silage is a safe feed. It works well for starting cattle on feed. Corn silage stored in sealed uprights should be ensiled at no less than 60 percent moisture.

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Q:

Corn silage, stored in upright, top-unloading silos, should be chopped at what percent moisture?

A) 72 to 75 percent moisture B) 82 to 85 percent moisture
C) 92 to 95 percent moisture D) 62 to 65 percent moisture
 
Answer & Explanation Answer: D) 62 to 65 percent moisture

Explanation: Cattle are easily changed from corn silage to a high-grain finishing ration. Corn silage is often used to furnish minimum roughage levels in high-grain finishing rations. Corn silage, stored in upright, top-unloading silos, should be chopped at 62 to 65 percent moisture.

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17
Q:

When discussing nutrition, what does NPN stand for?

A) Nonprotein nitrogen B) Normal protein necessities
C) Natural protein nitrogen D) No protein in nitrogen
 
Answer & Explanation Answer: A) Nonprotein nitrogen

Explanation: Non-protein nitrogen (or NPN) is a term used in animal nutrition to refer collectively to components such as urea, biuret, and ammonia, which are not proteins but can be converted into proteins by microbes in the ruminant stomach.

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18
Q:

What do the letters NRC stand for?

A) National Research Company B) National Research Council
C) National Research Chapter D) National Rehabilitation Center
 
Answer & Explanation Answer: B) National Research Council

Explanation: The National Research Council (NRC) is the Government’s premier research organization supporting industrial innovation, the advancement of knowledge and technology development, and fulfilling government mandates.

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Q:

How frequently should an average cow freshen?

A) Once every 24 months B) Once every 12 months
C) Once every 20 months D) Only once in her lifetime
 
Answer & Explanation Answer: B) Once every 12 months

Explanation: Under perfect conditions, the cow has a calf every year. When the cow freshens for the first time and becomes part of the milking herd.

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15
Q:

Oxytocin causes what to happen in a dairy cow?

A) Milk letdown B) Uterine contractions
C) Milk letdown and urine contraction D) Pregnancy
 
Answer & Explanation Answer: C) Milk letdown and urine contraction

Explanation: Release of the hormone oxytocin from the cow’s pituitary gland in the brain into the bloodstream, where it travels to the udder and causes several important processes to occur. Processes include milk letdown and urine contraction.

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23
Q:

What bacterium causes cattle tuberculosis (TB)?

A) Mycobacterium canine B) Mycobacterium ovius
C) Mycobacterium avious D) Mycobacterium bovis
 
Answer & Explanation Answer: D) Mycobacterium bovis

Explanation: Bovine tuberculosis (TB) is a chronic disease of animals caused by bacteria called Mycobacterium bovis, (M.bovis) which is closely related to the bacteria that cause human and avian tuberculosis.

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12
Q:

What do the letters FARAD stand for?

A) Food Animal Resistance Activity Database B) Food Animal Residue Avoidance Data
C) Food Animal Resistance Activity Data D) Food Animal Residue Avoidance Databank
 
Answer & Explanation Answer: D) Food Animal Residue Avoidance Databank

Explanation: The Food Animal Residue Avoidance Databank (FARAD) is part of the Food Animal Residue Avoidance & Depletion Program, which has served the veterinary profession for more than 35 years.

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