TAMU ANSC 107 - Environmental Physiology (5 pages)

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Environmental Physiology



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Environmental Physiology

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Lecture number:
19
Pages:
5
Type:
Lecture Note
School:
Texas A&M University
Course:
Ansc 107 - General Animal Science
Edition:
1

Unformatted text preview:

ANSC 107 1nd Edition Lecture 19 Outline of Previous Lecture I Estrous synchronization a Ram effect b Flehman II Methods a CIDR b MGA III AI a Advantages b Disadvantages IV Extenders Outline of Current Lecture I Environmental physiology II Factors affecting critical temperature III Effects of light on animal performance a Ventilation b Animal waste management Current Lecture 1 Adaptation long term changes in animals in response to their environment that are genetically based 2 Acclimatization adaptation of an animals to environmental factors over a period of days or week increase in red cells 3 Conduction exchange of heat from warm too cold between objects that are touching 4 Convection flow of heat from warm too cold through air or water 5 Critical temperature the temperature below lower critical temperature which the animal must make physiological adjustments to maintain its body temperature Upper critical temperature is that temperature at which the animal makes adjustments to try and cool its body a Ex sweat glands and shivering These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute b Reptiles can t do this but mammals can 6 Effective temperature total heating or cooling power of the environment Ambient temperature is affected by wind humidity and solar radiation a Affected by wind humidity and solar power i Shade and windbreak b Feedlots always have a wind break 7 Homoeothermic animals that maintain a relatively constant body temperature regardless of external temperatures Normal temperatures for farm animals are a Horse 100 b Cattle 101 5 c Sheep 102 d Goats 102 e Swine 102 5 f Chickens 107 8 Radiation exchange of heat between two objects that are not touching a Can results in the loss or gain of heat 9 Thermo neutral zone Range of temperature where heat loss and heat production are about the same Animals is in comfort zone no physiological response to temperature



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