TAMU Ramsey Exam 4 ANSC 107
Questions with Detailed Answers
2026/2027 Guide.
Adaptation - Answer Long term changes in animals in response to their environment;
genetically based
Acclimatization - Answer Short term changes in animals in response to their environment
Conduction - Answer Exchange of heat, from warm to cold, between touching objects
Convection - Answer Flow of heat, from warm to cold, through air or water
Lower Critical Temperature - Answer The temp below which the animal must make
physiological adjustments to maintain its body temp
Upper Critical Temperature - Answer The temp at which the animal makes adjustments to try
and cool its body
Effective Temperature - Answer The total heating/cooling power of the environment
Ambient Temperature - Answer Affected by wind, humidity and solar radiation
Evaporation - Answer Loss of heat through vaporization of moisture from the respiratory tract
and skin
Homeotherm - Answer Animals that maintain a relatively constant body temp, regardless of
external temps (from coolest-warmest: horse, cattle, sheep, goats, swine and chickens)
Radiation - Answer The exchange of heat between two objects that are not touching; can
result in a loss or gain of heat
Thermoneutral Zone - Answer Range of temps where heat loss and heat production are the
same; "comfort zone"
, Factors Affecting Critical Temperature - Answer Haircoat, Subcutaneous fat, nutritional level, is
the animal wet or dry
Produced by the thyroid gland, _________ secretion increases during cold stress and decreases
during heat stress - Answer Thyroxine
Produced by the adrenal gland, _________ secretions increase during cold stress and decrease
during heat stress - Answer Corticoids
Methods of Reducing Heat Stress - Answer -Shade
-Evaporative Cooling
-Refrigeration
-Zone Cooling
Cheapest and simplest method of reducing heat stress due to solar radiation; can reduce radiant
heat gain by up to 50% - Answer Shade
One of the most effective ways to control heat stress, particularly in swine; sprinklers, foggers
and wallows are most effective - Answer Evaporative cooling
Prohibitive in terms of cost, this form of heat stress reduction can, sometimes, pull air through
underground ducts and into a barn, which may cool the air down into the mid 60's - Answer
Refrigeration (AC)
Blowing air onto the head; effective on sows in farrowing houses who have shown increased
milk production - Answer Zone Cooling
T/F: Water intake during heavy stress increases - Answer T; by 50-100%
T/F: High fiber diets contribute to heat stress - Answer T
Feed intake is depressed during heat stress so you can "___ _____" rations with _ vitamins to
increase appetite - Answer top dress; B
____ ______ and ________ are used north of a line from Southern Colorado to Ohio to reduce
the effects of wind chill. They are generally built on the _____ side of the pen to block out the
cold wind - Answer Wind breaks; shelters; north
Questions with Detailed Answers
2026/2027 Guide.
Adaptation - Answer Long term changes in animals in response to their environment;
genetically based
Acclimatization - Answer Short term changes in animals in response to their environment
Conduction - Answer Exchange of heat, from warm to cold, between touching objects
Convection - Answer Flow of heat, from warm to cold, through air or water
Lower Critical Temperature - Answer The temp below which the animal must make
physiological adjustments to maintain its body temp
Upper Critical Temperature - Answer The temp at which the animal makes adjustments to try
and cool its body
Effective Temperature - Answer The total heating/cooling power of the environment
Ambient Temperature - Answer Affected by wind, humidity and solar radiation
Evaporation - Answer Loss of heat through vaporization of moisture from the respiratory tract
and skin
Homeotherm - Answer Animals that maintain a relatively constant body temp, regardless of
external temps (from coolest-warmest: horse, cattle, sheep, goats, swine and chickens)
Radiation - Answer The exchange of heat between two objects that are not touching; can
result in a loss or gain of heat
Thermoneutral Zone - Answer Range of temps where heat loss and heat production are the
same; "comfort zone"
, Factors Affecting Critical Temperature - Answer Haircoat, Subcutaneous fat, nutritional level, is
the animal wet or dry
Produced by the thyroid gland, _________ secretion increases during cold stress and decreases
during heat stress - Answer Thyroxine
Produced by the adrenal gland, _________ secretions increase during cold stress and decrease
during heat stress - Answer Corticoids
Methods of Reducing Heat Stress - Answer -Shade
-Evaporative Cooling
-Refrigeration
-Zone Cooling
Cheapest and simplest method of reducing heat stress due to solar radiation; can reduce radiant
heat gain by up to 50% - Answer Shade
One of the most effective ways to control heat stress, particularly in swine; sprinklers, foggers
and wallows are most effective - Answer Evaporative cooling
Prohibitive in terms of cost, this form of heat stress reduction can, sometimes, pull air through
underground ducts and into a barn, which may cool the air down into the mid 60's - Answer
Refrigeration (AC)
Blowing air onto the head; effective on sows in farrowing houses who have shown increased
milk production - Answer Zone Cooling
T/F: Water intake during heavy stress increases - Answer T; by 50-100%
T/F: High fiber diets contribute to heat stress - Answer T
Feed intake is depressed during heat stress so you can "___ _____" rations with _ vitamins to
increase appetite - Answer top dress; B
____ ______ and ________ are used north of a line from Southern Colorado to Ohio to reduce
the effects of wind chill. They are generally built on the _____ side of the pen to block out the
cold wind - Answer Wind breaks; shelters; north
