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ANSC 1011 Section 1 Week 1 Notes

by: Kristy Trahan

ANSC 1011 Section 1 Week 1 Notes ANSC 1011

Marketplace > Louisiana State University > Animal Science > ANSC 1011 > ANSC 1011 Section 1 Week 1 Notes
Kristy Trahan
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1. Introduction to Animal Sciences 2. Value of Animals to Mankind Lecture Notes Email me at for further information!
Introduction to Animal Science
T. Bidner
Class Notes
IntroductiontoAnimalSciences, ANSC1011, ThomasBidner




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This 4 page Class Notes was uploaded by Kristy Trahan on Saturday August 27, 2016. The Class Notes belongs to ANSC 1011 at Louisiana State University taught by T. Bidner in Fall 2016. Since its upload, it has received 227 views. For similar materials see Introduction to Animal Science in Animal Science at Louisiana State University.

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Date Created: 08/27/16
ANSC 1011 Kristy Trahan Introduction to Animal Sciences: Domesticated Animals  Animal-mankind relationship goes back to before history was recorded  Domesticated animals serve many purposes, however the primary purpose is food  Hunter gatherersfarmeragriculture o How humans have developed o Almost all people are dependent on agriculture for existence o The most developed agricultural countries have the highest standard of living  Truck Farming o Growing vegetables, fruits, and even flowers on a commercial basis o Energy (sunlight, etc.), water, soil (nutrients), and technology  Row Crop Farming o Commercial farming- grow crops for both human and animal production o Corn and soybeans- two major crops  Livestock Production o Beef feedlots don’t usually keep and feed animals for very long o Poultry and swine  Young chickens for meat- broilers  The desired color for both commercial groups is white  Looks better than black hair on the carcass  Animal Science- the study of domesticated animals  Domesticastd animals: o 1 dog- maybe 14,000 years ago  Russians and the fox breeding to get the tamest o Sheep 10,000 years ago o Goats, hogs, and cattle 8,500 years ago o Domestication:  The process by which humans take wild species and acclimatize them to breed and survive in captivity  Animal Science Specialties o Animal Breeding (applied genetics)  Understanding genes and improving the animals  GMOs- we can modify organisms at a lot higher rate than long ago  Some people think this is bad for people but this occurs naturally  We just have accelerated the process o Nutrition (feeding animals)  Finding the best thing to feed animals o Physiology (mechanisms of animal life)  Studying all the systems in animals o Animal health (diseases, parasites, and environmental factors)  Veterinarians o Ethology (animal behavior)  One of the newer fields of animal science (controversial area)  Some believe that animals have human characteristics and the controversy comes from the idea that humans shouldn’t be used for food o Meat Science, dairy products, and eggs (processing, distribution, and marketing of meat, dairy, and egg products) ANSC 1011 Kristy Trahan o Biotechnology (technological applications of modern biology, particularly molecular and cellular biology)  Animal Distribution o 4.5 billion large farm animals world wide o 19.7 billion poultry  More than any other specie o 1.4 billion cattle (beef and dairy) o 1.08 billion sheep  On the decline (many people don’t wear as much wool anymore) o 93 million pigs  Provide the most food products than any other specie o 84 million goats  Increasing o 109 million horses, asses, and mules o Approximately two-thirds of large animals are found in developing countries  Animal Contributions to Mankind o Food- meat, milk, blood, and fat o Body covering- wool leather, pelts, and hides o Work- field work and transportation (not very much anymore) o Body wastes- fuel, fertilizer (N-P-K), construction material and feed  Nitrogen, phosphorus, and potassium o Other- capital storage, income, prestige, religion, by-products, recreation, companionship  Definitions o Nutrient Dense- measure of the chemical substances of food that provide nourishment as compared to the calories o Essential Amino Acids- smallest complete unit of a protein that is required by the body but cannot be manufactured at a rate needed for growth, reproduction, or milk production  Without these you would DIE o Draft Animal- an animal whose main purpose is to perform work  Meat o Pig is the most important source o Poultry is number one if you combine meat and eggs o Pork, poultry, and beef make up 90% of meat consumed  Biomedical research with animals has increased our lifespan by 30 years o Before, prisoners and people in asylums were test subjects  Biofuel production plays a role in food availability and price  Animals convert inedible feeds to valuable food for humans o Animals get rid of what we can’t consume (2/3 of animal feeds is not suitable for human consumption ANSC 1011 Kristy Trahan The Value of Animals to Mankind  Domestication o Animals were domesticated to keep them for companionship/food o We definitely need domesticated animals today o Domesticated for food, non-food uses, and culturally  Why we eat meat? o Natural- foundation in human biology o Normal- most people eat meat o Necessary- need to eat to survive, or to thrive, stay healthy and be properly nourished o Nice- enjoyable because it tastes good  Food uses of animal products o Meat: nutrients provided are important for survival o Protein and energy- Protein (amino acids): energy measured as calories o Vitamins: fat and water soluble o Minerals: macro and micro minerals o Essential fatty acids: linoleic and linolenic acid  Meat Consumption o #1 is pork  2/5 of the meat in the world is pork  They have the most offspring per litter  Reproduce the fastest (3 months 3 weeks and 3 days)  Also takes about 5 months to reach market weight  Beef takes about 18 months  Variety Meats o Edible by-products: heart, tongue, liver, etc.  Milk products and eggs o Very high quality foods (nutrient dense and essential fatty acids) o Milk sources: cows 84%, buffalo 12%, remainder- sheep, camel, and goats o Eggs: mainly chicken eggs (large producer near Denham Springs (Cal Maine)) o Metric tons of eggs is slightly less than poultry meat  Non-food uses of animals o Body covering- pelts and fibers o Power- draft animals o Body wastes- manure and compost, fuel, and construction (make houses) o Pest and weed control o Storage of capitol and food- look at animals as a sign of wealth  Goat is a poor man’s fridge- keep them alive right before they need to kill them because they don’t have a fridge to store the meat  Cultural Uses o Religion o Exhibition and spectator sports- rodeo, livestock shows, and fighting o Companionship and service ANSC 1011 Kristy Trahan o Social structure- wealth, formal and marriage contracts (dowry)  Nonfood by-products o Blood, bones, etc.  Other uses- conservation, large income for the US ($185-200 billion)


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