ANSC 107 Exam 2 Questions & Answers
2024/2025
Adaptation - ANSWERSLong term changes in animals in repsonse to their environment
Genetic based
Acclimatization - ANSWERSAdaptation of an animal to environmental factors over a period of
days/weeks
Short term
Conduction - ANSWERSexchange of heat from warm to cold
-Objects touching
Convection - ANSWERSFlow of heat from warm to cold
-Through air or water
Radiation - ANSWERSExchange of heat between two objects NOT touching.
Can result in loss or gain of heat**
Lower critical temperature - ANSWERSanimal has to make physiological adjustments to maintain its body
temp.
-too low
High critical temperature - ANSWERSanimal has to make adjustments to try and cool its body
-too high
Effective temperature - ANSWERSthe total heating or cooling power of the environment
,Homeotherm - ANSWERSAnimals that maintain a relatively constant body temperature regardless of
external temperatures
Thermoneutral zone - ANSWERSAnimal's comfort zone
-between upper and lower critical temp.
Thermoneutral zone (TNZ) makes animals - ANSWERSeasier to gain weight
Most gain***
Pattern of animal vs. normal temp (inverse): - ANSWERSLarger animal, lower body temperature
Horses normal temp: - ANSWERS100 F
Cattle normal temp: - ANSWERS101.5 F
Sheep/Goats normal temp: - ANSWERS102 F
Swine normal temp: - ANSWERS102.5 F
Chickens normal temp: - ANSWERS107 F
Factors affecting critical temp: - ANSWERS-Haircoat
-Subcutaneous fat
-Nutritional level
-Is the animal wet or dry
Thyroxine is produced by - ANSWERSthyroid gland
Thyroxine is produced when - ANSWERSincreases during cold stress
, decreases during heat stress
Corticoids is produced by - ANSWERSadrenal gland
Corticoids are produced when - ANSWERSincreased during cold sorters
decreased during heat stress
The summer is limiting to U.S. livestock except - ANSWERSBrahman cattle
Cheapest and simplest method to reduce heat stress. - ANSWERSShade
Shade can reduce heat stress by. - ANSWERS50%
One of the most effective (but costly$$) ways to reduce heat stress - ANSWERSEvaporative cooling
Ex: sprinklers, foggers
Most common way to reduce heat stress for swine/farrowing houses (specific zone)? - ANSWERSZone
cooling
-cools head
Why is refrigeration prohibtive? - ANSWERSterms of cost
-show cattle
When is ventilation used? - ANSWERSused in confinement
Why is ventilation used? - ANSWERS-proper air movement
-reduces disease
-> ammonia, pneumonia
2024/2025
Adaptation - ANSWERSLong term changes in animals in repsonse to their environment
Genetic based
Acclimatization - ANSWERSAdaptation of an animal to environmental factors over a period of
days/weeks
Short term
Conduction - ANSWERSexchange of heat from warm to cold
-Objects touching
Convection - ANSWERSFlow of heat from warm to cold
-Through air or water
Radiation - ANSWERSExchange of heat between two objects NOT touching.
Can result in loss or gain of heat**
Lower critical temperature - ANSWERSanimal has to make physiological adjustments to maintain its body
temp.
-too low
High critical temperature - ANSWERSanimal has to make adjustments to try and cool its body
-too high
Effective temperature - ANSWERSthe total heating or cooling power of the environment
,Homeotherm - ANSWERSAnimals that maintain a relatively constant body temperature regardless of
external temperatures
Thermoneutral zone - ANSWERSAnimal's comfort zone
-between upper and lower critical temp.
Thermoneutral zone (TNZ) makes animals - ANSWERSeasier to gain weight
Most gain***
Pattern of animal vs. normal temp (inverse): - ANSWERSLarger animal, lower body temperature
Horses normal temp: - ANSWERS100 F
Cattle normal temp: - ANSWERS101.5 F
Sheep/Goats normal temp: - ANSWERS102 F
Swine normal temp: - ANSWERS102.5 F
Chickens normal temp: - ANSWERS107 F
Factors affecting critical temp: - ANSWERS-Haircoat
-Subcutaneous fat
-Nutritional level
-Is the animal wet or dry
Thyroxine is produced by - ANSWERSthyroid gland
Thyroxine is produced when - ANSWERSincreases during cold stress
, decreases during heat stress
Corticoids is produced by - ANSWERSadrenal gland
Corticoids are produced when - ANSWERSincreased during cold sorters
decreased during heat stress
The summer is limiting to U.S. livestock except - ANSWERSBrahman cattle
Cheapest and simplest method to reduce heat stress. - ANSWERSShade
Shade can reduce heat stress by. - ANSWERS50%
One of the most effective (but costly$$) ways to reduce heat stress - ANSWERSEvaporative cooling
Ex: sprinklers, foggers
Most common way to reduce heat stress for swine/farrowing houses (specific zone)? - ANSWERSZone
cooling
-cools head
Why is refrigeration prohibtive? - ANSWERSterms of cost
-show cattle
When is ventilation used? - ANSWERSused in confinement
Why is ventilation used? - ANSWERS-proper air movement
-reduces disease
-> ammonia, pneumonia
