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AGR 300 Midterm Exam Questions and Answers: Animal Nutrition and Digestion, Exams of Veterinary

A comprehensive set of multiple-choice questions and answers covering key concepts in animal nutrition and digestion, particularly focusing on ruminant animals. It explores topics such as carbohydrate sources, fermentation processes in the rumen, nutrient requirements, digestive enzymes, and the role of various stomach compartments. Valuable for students studying animal science, agriculture, or related fields.

Typology: Exams

2024/2025

Available from 02/26/2025

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AGR 300 MIDTERM EXAM QUESTIONS WITH COMPLETE &
ACCURATE ANSWERS
Which of the following is NOT a source of Carbohydrates
Sugars
Minerals
Cellulose
Starch -- Correct Answer โœ”โœ” Minerals
True or False: Ruminants can break down lignin as long as they are provided plenty of
water. -- Correct Answer โœ”โœ” False
Most feed carbohydrates are monosaccharides. -- Correct Answer โœ”โœ” False
Which of the following sugars can be absorbed into the body?
Monosaccharides
Disaccharides
Oligosaccharides
Polysaccharides -- Correct Answer โœ”โœ” Monosaccharides
Match the disaccharides on the left with their monosaccharide components on the right.
Lactose -- Correct Answer โœ”โœ” Glucose & Galactose
Match the disaccharides on the left with their monosaccharide components on the right.
Sucrose -- Correct Answer โœ”โœ” Glucose & Fructose
Match the disaccharides on the left with their monosaccharide components on the right.
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Download AGR 300 Midterm Exam Questions and Answers: Animal Nutrition and Digestion and more Exams Veterinary in PDF only on Docsity!

AGR 300 MIDTERM EXAM QUESTIONS WITH COMPLETE &

ACCURATE ANSWERS

Which of the following is NOT a source of Carbohydrates Sugars Minerals Cellulose Starch -- Correct Answer โœ”โœ” Minerals True or False: Ruminants can break down lignin as long as they are provided plenty of water. -- Correct Answer โœ”โœ” False Most feed carbohydrates are monosaccharides. -- Correct Answer โœ”โœ” False Which of the following sugars can be absorbed into the body? Monosaccharides Disaccharides Oligosaccharides Polysaccharides -- Correct Answer โœ”โœ” Monosaccharides Match the disaccharides on the left with their monosaccharide components on the right. Lactose -- Correct Answer โœ”โœ” Glucose & Galactose Match the disaccharides on the left with their monosaccharide components on the right. Sucrose -- Correct Answer โœ”โœ” Glucose & Fructose Match the disaccharides on the left with their monosaccharide components on the right.

Maltose -- Correct Answer โœ”โœ” Glucose & Glucose In ruminant animals, most carbohydrates are fermented in the _________________. Abomasum Rumen Small intestine intestine -- Correct Answer โœ”โœ” Rumen ......fill in.....bacteria are predominate in the digestive systems animals fed diets consisting of roughages, while bacteria are ......fill in.....predominate in animals fed diets consisting of more grains and concentrates. (Spelling counts on this question) -- Correct Answer โœ”โœ” Cellulolytic Amylolytic True or False: Cellulose takes longer to ferment than simple sugars. -- Correct Answer โœ”โœ” True As rumen pH decreases, cellulolytic bacteria become more active. -- Correct Answer โœ”โœ” False One glucose molecule can be fermented into one of three volatile fatty acids (VFA) with varying degrees of efficiency. Match the VFA on the left with the by-products (waste) that come along with its formation. Acetic Acid -- Correct Answer โœ”โœ” Carbon Dioxide, Methane, and heat One glucose molecule can be fermented into one of three volatile fatty acids (VFA) with varying degrees of efficiency. Match the VFA on the left with the by-products (waste) that come along with its formation. Propionic Acid -- Correct Answer โœ”โœ” water

Cattle -- Correct Answer โœ”โœ” roughage grass grazers Which of the following is NOT a function of mastication (chewing) in carnivores? increase surface area reduce particle size allow enzymes to act on food molecules All of the above are functions of chewing in carnivores None of the above are functions of chewing in carnivores -- Correct Answer โœ”โœ” increase surface area True or False: Ruminants may chew a particle of feed up to 50,000 times a day. -- Correct Answer โœ”โœ” True True or False: Ruminant animals have a highly developed set of upper incisors. -- Correct Answer โœ”โœ” False Match the types of teeth below with their function. Molars -- Correct Answer โœ”โœ” grinding and crushing Match the types of teeth below with their function. Canines -- Correct Answer โœ”โœ” Tearing Match the types of teeth below with their function. Incisors -- Correct Answer โœ”โœ” Ripping and/or nipping Match the following jaw muscles with their purpose. Masseter & Medial Pterygoid -- Correct Answer โœ”โœ” force of general crushing and grinding Match the following jaw muscles with their purpose.

Lateral Pterygoid -- Correct Answer โœ”โœ” lateral movements in herbivores Match the following jaw muscles with their purpose. Temporalis Muscle -- Correct Answer โœ”โœ” maximum force in anterior jaw The quantity of saliva produced by an animal is directly related to its level of ___________ activity. -- Correct Answer โœ”โœ” chewing True or False: Most horses have difficulty belching out gasses. -- Correct Answer โœ”โœ” True Which of the following is NOT a function of saliva? Digest starches Digest lipids Moisten Feed Denature Protein Aid in Swallowing All of the above are functions of saliva None of the above are functions of saliva -- Correct Answer โœ”โœ” Denature Protein Deglutition (swallowing) is initiated by the presence of food in the ___________. -- Correct Answer โœ”โœ” pharynx True or False: Dogs have minimal control over food movement in their esophagus. -- Correct Answer โœ”โœ” false A ruminant esophagus has striated muscles in its __________________. First 1/ First 2/ Last 1/ Entire length -- Correct Answer โœ”โœ” Entire length The lowest portion of a birds esophagus is the _________________.

Gastrin Secretin Cholecystokinin Gastric Inhibitory Protein All of the above originate in the duodenum None of the above originate in the duodenum -- Correct Answer โœ”โœ” Gastrin Development of rumen papilla is spurred by what two fatty acids? Butyric & Acetic Acid Acetic & Propionic Acid Butyric & Propionic Acid Acetic & Hydrochloric Acid None of the Above -- Correct Answer โœ”โœ” Butyric & Propionic Acid What two gasses are primarily produced and belched out during the rumination process? Carbon Dioxide & Methane Carbon Dioxide & Carbon Monoxide Methane & Carbon Monoxide Carbon Monoxide & Nitrogen None of the Above -- Correct Answer โœ”โœ” Carbon Dioxide & Methane What Volatile Fatty Acid (VFA) is most prevalent in the rumen? Acetate Butyrate Omega- 3 Propionate None of the Above -- Correct Answer โœ”โœ” Acetate Which of the following can occur when a ruminant animal suffers rumen acidosis? Laminitis Decreased Milk Production

Reduced availability of protein Reduced Availability of energy All of the Above None of the Above -- Correct Answer โœ”โœ” All of the Above True or False: Most mineral absorption occurs in the rumen. -- Correct Answer โœ”โœ” False Which of the following is NOT a region of the abomasum? Anterior Cardiac Fundic Pyloric All of the above are regions of the abomasum -- Correct Answer โœ”โœ” Anterior Which of the following organs serves as the primary absorption site for most nutrients? Rumen Large Intestine Pancreas Small Intestine None of the Above -- Correct Answer โœ”โœ” Small Intestine True or False: Absorption in the small intestine occurs relatively quickly. -- Correct Answer โœ”โœ” true Nutrients can be absorbed by which of the following mechanisms? Active Transport Facilitated Diffusion Passive Diffusion Endocytosis All of the Above None of the Above -- Correct Answer โœ”โœ” All of the Above

The organ that shunts milk directly to the omasum in young ruminant animals is called the _________________. Abomasum Reticulum Esophageal Shunt Reticular Groove None of the Above -- Correct Answer โœ”โœ” Reticular Groove The (fill in) is the largest stomach compartment in adult ruminant animals, while the (fill in) is the largest stomach compartment in newborn ruminant animals. -- Correct Answer โœ”โœ” 1. Rumen

  1. abomasum True or False: The gut function of a newborn ruminant animal is similar to that of an adult monogastric animal. -- Correct Answer โœ”โœ” True Which of the following is a characteristic of Rumen By-pass? Rumen By-pass allows for more efficient use of protein Rumen By-pass eliminates energy loss from methane Rumen By-pass reduces energy loss from heat Rumen By-pass reduces ammonia loss All of the above are true about Rumen By-pass None of the above are true about Rumen By-pass -- Correct Answer โœ”โœ” All of the above are true about Rumen By-pass True or False: Intestinal sucrase is an enzyme that digests carbohydrates in ruminant animals. -- Correct Answer โœ”โœ” false Bacterial microbes are introduced to the rumen in all of the following ways EXCEPT: Bedding Feed Present at Birth

Animal-to-Animal Contact All of the above lead to bacteria in the rumen -- Correct Answer โœ”โœ” Present at Birth True or False: A ruminant can survive indefinitely without a functional rumen as long as it is not fed roughages. -- Correct Answer โœ”โœ” false Match the four steps of rumination with their definitions regurgitation -- Correct Answer โœ”โœ” using reverse peristalsis to return food to the mouth Match the four steps of rumination with their definitions remastication -- Correct Answer โœ”โœ” reviewing the food bolus in the mouth Match the four steps of rumination with their definitions Reinsalvation -- Correct Answer โœ”โœ” adding more salvia to the food bolus Match the four steps of rumination with their definitions Redeglutition -- Correct Answer โœ”โœ” re-swallowing the food bolus and liquids Ruminant animals spend about a third of their day eating and a third of their day ruminating. -- Correct Answer โœ”โœ” true What are the two most prevalent gasses in the rumen? Oxygen & Hydrogen Carbon Dioxide & Methane Nitrogen & Oxygen Methane & Hydrogen Sulfide None of the Above -- Correct Answer โœ”โœ” Carbon Dioxide & Methane Microbes provide all of the following benefits to the ruminant EXCEPT:

Match the type of feed carbohydrates below with the description of digestibility on the right. Each description may be used more than once. Cellulose -- Correct Answer โœ”โœ” structural carbohydrates, digested by rumen microbes Match the type of feed carbohydrates below with the description of digestibility on the right. Each description may be used more than once. lignin -- Correct Answer โœ”โœ” structural carbohydrates, not digestible Match the type of feed carbohydrates below with the description of digestibility on the right. Each description may be used more than once. Hemicellulose -- Correct Answer โœ”โœ” structural carbohydrates, digested by rumen microbes Match the type of feed carbohydrates below with the description of digestibility on the right. Each description may be used more than once. Soluble sugars -- Correct Answer โœ”โœ” non-structural carbohydrates, digested by mono- gastric animals and rumen animals