ANSC 101 Lecture Notes - Lecture 16: Killer Toy, Child Labor Laws In The United States, Selenium Deficiency

• School: University of Maryland
• Department: Animal Science
• Course: ANSC 101
• Professor: Kasey Moyes

Document Summary

Objectives: describe how various species adapt to their environment based on their physiology, describe how environment quality (e. g. air, water, and soil) are affected by animal production. Integrated poultry, confinement swine, indoor pets: environmental conditions controlled, light, temperature, nutrition, movement, disease, extensive management, cattle, sheep, horses, outdoor pets, weather and disease. What is the environment: nutrition, temperature, humidity, wind, precipitation, altitude, pollution, water, urban pressure, soil, parasites, soil, disease, predation, poisonous plants, sunlight. Adaptability of animals: temperature zones in the us, changing seasons, mammals homeotherms, poikilotherms, thyroid gland, location, thyroxine (t4, triiodothyronine (t3) Thermoneutral zone: temperature range in effective ambient temperatures where rate and efficiency of performance is maximized and health is optimal, no or minimal energy expenditure to maintain body heat. What do animals do to increase body temperature: shivering, hair, feathers, or fat for insulation, vasoconstriction (narrowing of blood vessels) of the skin. Increase the effective ambient temperature: avoid the wind, huddle together.