ANSC 3010 TEST 1 LSU QUESTIONS WELL ANSWERED LATEST UPDATE 2026
What is the challenge that livestock producers and nutritionists face when it comes to feeding
animals? - Answers To increase the efficiency of conversion of feedstuffs into animal products.
What is a diet? - Answers Feed constituent or group of feed constituents that aid in the support of life
What is nutrition? - Answers A series of processes by which an animal takes in and assimilates feed
components for promoting growth, milk, or fiber production and replacing worn or injured tissues
6 classes of nutrients - Answers Water, carbs, protein, lipid, vitamins and minerals
4 factors that influence food and feed production - Answers 1) Government regulatory practices
2) Prices received for products
3) Environmental conditions
4) Input costs (fertilizer, labor, equipment)
True or False: All animals require the same nutrients - Answers False
What are examples of natural feedstuff? - Answers corn, soybean, wheat
What are examples of natural processed feedstuff? - Answers SBM, wheat bran, corn gluten feed
What are examples of synthetic feedstuff? - Answers crystalline amino acids, vitamins
What is a ration? - Answers amount of diet consumed in 24 hr period
What is the most important nutrient? - Answers Water
In what ways can an animal derive water? - Answers Drinking
Feedstuffs
Metabolic
What is free water? - Answers the moisture associated with the feed.
How is metabolic water made? - Answers Chemically bound and released when nutrients or body
tissue are broken down by metabolic processes
A general definition for good-quality water is that it should contain less than 2,500 mg/l (0.25%) of
__________. - Answers Dissolved solids
True or False: Water could be a source of mineral toxicity - Answers True
Carbohydrates serve as a source of ________. - Answers Energy
Carbohydrates comprise up to ___% of the dry matter of forages and as much as ___% in grains -
Answers 70%
80%
Chemically, carbohydrates are composed of _____, _______, and ______ - Answers C, H, O
What is the simplest form of carbohydrate? - Answers monosaccharide; it contains either five or six
carbons, and often referred to as a sugar
What are the 2 most common simple sugars in feed? - Answers Sucrose (table sugar) and Lactose
(milk sugar)
___________ and ____________ are the two polysaccharides found in plants in the highest
concentrations. - Answers Starch and cellulose
In monogastric animals, dietary carbohydrates must be converted to ____________. - Answers
Simple sugars
The primary source of amylase (enzyme) is the_______ - Answers pancreas
Which animal needs a diet that is
lower in carbohydrates? - Answers Cat
Simple sugars are absorbed rapidly by the _____________. - Answers Small intestine
True or False: When young ruminant animals are born, they are functionally monogastric animals -
Answers True
Microbial organisms cause the ________ in rumen to develop & mature - Answers papillae
True or False: In ruminant animals, the amount of amylase and other enzymes secreted into the small
intestine is very high, as compared to monogastric animals - Answers False; In ruminant animals, the
amount of amylase and other enzymes secreted into the small intestine is quite LOW, as compared to
monogastric animals. As a result, ruminant animals are LESS able to
digest starch in the small intestine
Ruminants are most efficient at digesting _______ __________ - Answers fibrous carbohydrates
(cellulose and hemicellulose)
What is Lignin? - Answers A compound associated with fibrous feedstuffs and dramatically affects the
animal's ability to digest cellulose and hemicellulose
Does the lignin content of plants increase or decrease as the plants mature? - Answers Increase
, True or False: Amino acids for protein synthesis are supplied in the diet or result from digestive
processes in the GI tract. - Answers True
True or False: Blood meal is highly soluble and high in protein - Answers True
What are the 2 categories for amino acids? - Answers Essential amino acids (or nondispensable) and
Nonessential amino acids (or dispensable).
If a specific amino acid required to synthesize a protein is not available, the protein cannot be
synthesized. This is referred to as a ___________ amino acid. - Answers limiting
True or False: If a specific amino acid required to synthesize a protein is not available, the protein can
still be synthesized - Answers False; If a specific amino acid required to synthesize a protein is not
available, the protein cannot be synthesized
List the 10 essential amino acids - Answers Methionine
Arginine
Threonine
Tryptophan
Histidine
Isoleucine
Leucine
Lysine
Valine
Phenylalanine
Ruminants can survive on diets that contain no protein but need ____ source - Answers N
Which essential amino is only essential for cats? - Answers Taurine
In simple stomach animals, how are dietary proteins convert to amino acids? - Answers Dietary
proteins are converted into amino acids by the digestive secretions in the stomach.
What are the 2 factors that relative biological value (BV) depend on? - Answers 1) How well animal GI
tract converts to AA
2) How well amino acid balance compares to need
True or False: In general, protein quality is more important to ruminants than simple-stomached
species - Answers False; Protein quality is LESS important to ruminants than simple-stomached
species
A deficiency of protein can result for two reasons. What are they? - Answers 1) 1 or more AA's are
limiting
2) Inadequate dietary protein
True or False: Lipids have 2.25x more energy than carbohydrates - Answers True
When all bonds on the carbon atom are taken up by a hydrogen, the result is _____________. -
Answers saturated fatty acid
Fat sources are classified as fats or oils, based on _________ ____________ at room temperature -
Answers physical consistency
Fats found in plants & animals are generally in the _____________ form - Answers triglyceride
In monogastric animals, the primary site of fat digestion is the _______ ___________. - Answers
Small intestine; Combined action of bile & pancreatic lipase digests the dietary fats
True or False: Once in the tissues lining the GI tract, the dietary fats are transformed back to
triglycerides and transported to the cells of the animal to be metabolized. - Answers True
True or False: In general, fats absorb more completely than oils - Answers False; OILS absorb more
completely than FATS
Adequate amounts of fats are essential for absorption of fat-soluble vitamins. What are the fat-
soluble vitamins? - Answers A, D, E, K
Fats are used to synthesize various compounds required by the animal, or stored in fat deposits as an
__________ _____________. - Answers Energy reserve
What are the end products of energy metabolism? - Answers CO2, water, heat, and ATP
What are the two fatty acids essential for mammalian species? - Answers Linoleic acid (C18:2) &
linolenic acid (C18:3)
What are 2 excellent sources of
linoleic and linolenic acid? - Answers Corn and soybean oils
What are essential fatty acids? - Answers Integral part of the lipid-protein structure of the cell
membranes. Essential fatty acids are distributed widely among most of the common feedstuffs
Essential amino acids are important in the structure of ________________. - Answers prostaglandins
What is the challenge that livestock producers and nutritionists face when it comes to feeding
animals? - Answers To increase the efficiency of conversion of feedstuffs into animal products.
What is a diet? - Answers Feed constituent or group of feed constituents that aid in the support of life
What is nutrition? - Answers A series of processes by which an animal takes in and assimilates feed
components for promoting growth, milk, or fiber production and replacing worn or injured tissues
6 classes of nutrients - Answers Water, carbs, protein, lipid, vitamins and minerals
4 factors that influence food and feed production - Answers 1) Government regulatory practices
2) Prices received for products
3) Environmental conditions
4) Input costs (fertilizer, labor, equipment)
True or False: All animals require the same nutrients - Answers False
What are examples of natural feedstuff? - Answers corn, soybean, wheat
What are examples of natural processed feedstuff? - Answers SBM, wheat bran, corn gluten feed
What are examples of synthetic feedstuff? - Answers crystalline amino acids, vitamins
What is a ration? - Answers amount of diet consumed in 24 hr period
What is the most important nutrient? - Answers Water
In what ways can an animal derive water? - Answers Drinking
Feedstuffs
Metabolic
What is free water? - Answers the moisture associated with the feed.
How is metabolic water made? - Answers Chemically bound and released when nutrients or body
tissue are broken down by metabolic processes
A general definition for good-quality water is that it should contain less than 2,500 mg/l (0.25%) of
__________. - Answers Dissolved solids
True or False: Water could be a source of mineral toxicity - Answers True
Carbohydrates serve as a source of ________. - Answers Energy
Carbohydrates comprise up to ___% of the dry matter of forages and as much as ___% in grains -
Answers 70%
80%
Chemically, carbohydrates are composed of _____, _______, and ______ - Answers C, H, O
What is the simplest form of carbohydrate? - Answers monosaccharide; it contains either five or six
carbons, and often referred to as a sugar
What are the 2 most common simple sugars in feed? - Answers Sucrose (table sugar) and Lactose
(milk sugar)
___________ and ____________ are the two polysaccharides found in plants in the highest
concentrations. - Answers Starch and cellulose
In monogastric animals, dietary carbohydrates must be converted to ____________. - Answers
Simple sugars
The primary source of amylase (enzyme) is the_______ - Answers pancreas
Which animal needs a diet that is
lower in carbohydrates? - Answers Cat
Simple sugars are absorbed rapidly by the _____________. - Answers Small intestine
True or False: When young ruminant animals are born, they are functionally monogastric animals -
Answers True
Microbial organisms cause the ________ in rumen to develop & mature - Answers papillae
True or False: In ruminant animals, the amount of amylase and other enzymes secreted into the small
intestine is very high, as compared to monogastric animals - Answers False; In ruminant animals, the
amount of amylase and other enzymes secreted into the small intestine is quite LOW, as compared to
monogastric animals. As a result, ruminant animals are LESS able to
digest starch in the small intestine
Ruminants are most efficient at digesting _______ __________ - Answers fibrous carbohydrates
(cellulose and hemicellulose)
What is Lignin? - Answers A compound associated with fibrous feedstuffs and dramatically affects the
animal's ability to digest cellulose and hemicellulose
Does the lignin content of plants increase or decrease as the plants mature? - Answers Increase
, True or False: Amino acids for protein synthesis are supplied in the diet or result from digestive
processes in the GI tract. - Answers True
True or False: Blood meal is highly soluble and high in protein - Answers True
What are the 2 categories for amino acids? - Answers Essential amino acids (or nondispensable) and
Nonessential amino acids (or dispensable).
If a specific amino acid required to synthesize a protein is not available, the protein cannot be
synthesized. This is referred to as a ___________ amino acid. - Answers limiting
True or False: If a specific amino acid required to synthesize a protein is not available, the protein can
still be synthesized - Answers False; If a specific amino acid required to synthesize a protein is not
available, the protein cannot be synthesized
List the 10 essential amino acids - Answers Methionine
Arginine
Threonine
Tryptophan
Histidine
Isoleucine
Leucine
Lysine
Valine
Phenylalanine
Ruminants can survive on diets that contain no protein but need ____ source - Answers N
Which essential amino is only essential for cats? - Answers Taurine
In simple stomach animals, how are dietary proteins convert to amino acids? - Answers Dietary
proteins are converted into amino acids by the digestive secretions in the stomach.
What are the 2 factors that relative biological value (BV) depend on? - Answers 1) How well animal GI
tract converts to AA
2) How well amino acid balance compares to need
True or False: In general, protein quality is more important to ruminants than simple-stomached
species - Answers False; Protein quality is LESS important to ruminants than simple-stomached
species
A deficiency of protein can result for two reasons. What are they? - Answers 1) 1 or more AA's are
limiting
2) Inadequate dietary protein
True or False: Lipids have 2.25x more energy than carbohydrates - Answers True
When all bonds on the carbon atom are taken up by a hydrogen, the result is _____________. -
Answers saturated fatty acid
Fat sources are classified as fats or oils, based on _________ ____________ at room temperature -
Answers physical consistency
Fats found in plants & animals are generally in the _____________ form - Answers triglyceride
In monogastric animals, the primary site of fat digestion is the _______ ___________. - Answers
Small intestine; Combined action of bile & pancreatic lipase digests the dietary fats
True or False: Once in the tissues lining the GI tract, the dietary fats are transformed back to
triglycerides and transported to the cells of the animal to be metabolized. - Answers True
True or False: In general, fats absorb more completely than oils - Answers False; OILS absorb more
completely than FATS
Adequate amounts of fats are essential for absorption of fat-soluble vitamins. What are the fat-
soluble vitamins? - Answers A, D, E, K
Fats are used to synthesize various compounds required by the animal, or stored in fat deposits as an
__________ _____________. - Answers Energy reserve
What are the end products of energy metabolism? - Answers CO2, water, heat, and ATP
What are the two fatty acids essential for mammalian species? - Answers Linoleic acid (C18:2) &
linolenic acid (C18:3)
What are 2 excellent sources of
linoleic and linolenic acid? - Answers Corn and soybean oils
What are essential fatty acids? - Answers Integral part of the lipid-protein structure of the cell
membranes. Essential fatty acids are distributed widely among most of the common feedstuffs
Essential amino acids are important in the structure of ________________. - Answers prostaglandins
