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Animal Science PowerPoint Presentation

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Animal Science Presentation Transcript

Slide 1 - Animal Science Animal Science
Slide 2 - What is Animal Science? DEF: the study of the biology of animals that are under the control of mankind (usually domestic animals) Breeding Care Feeding Management Products Processing Marketing Behavior Welfare Nutrition Genetics Biotechnology Reproduction Agribusiness
Slide 3 - A Brief History of Animals 4.5
Slide 4 - A Brief History of Animals What was the first form of life? (as far as we can tell at the moment)
Slide 5 - A Brief History of Animals The oldest traces of life date back: 3.4 to 3.5 billion years. Blue-green algae and bacteria.
Slide 6 - Flash forward a few Billion years…
Slide 7 - Vertebrates DEF: Animals that have a back bone. (vertebrae) Can you name any animals that don’t have backbones?
Slide 8 - Vertebrates
Slide 9 - Triassic and Jurassic periods 180-135 million years ago 1st there were only dinosaurs, mammal-like reptiles, and sea creatures. When dinosaurs were most abundant, the first birds and very small mammals were seen. Archaeopteryx = ancestors of modern birds
Slide 10 - Triassic and Jurassic periods 180-135 million years ago Why were there birds and very small mammals when dinosaurs were the most large and numerous? Wouldn’t the dinos take up all the space and food?
Slide 11 - Cretaceous period 135 to 70 million years ago Dinosaurs and marine reptiles reached their period of greatest abundance then…Disappeared. The reason for their demise is still debated by scientists.
Slide 12 - ppt slide no 12 content not found
Slide 13 - Coelacanth: (cee-lo-can’t) “A living fossil” Ancient fish Were here more than 400 million years ago! Still around now, but critically endangered
Slide 14 - Coelacanth
Slide 15 - Ceelo… Can’t.
Slide 16 - Paleocene and Eocene epoch 70 to 40 MILLION YEARS AGO Dinosaurs are gone!! But, the small animals survived. Mammals evolved, dispersed, and adapted to new environments. Why?
Slide 17 - Summary What is the definition of Animal Science? What are some fields within AnSci? What was the first life on earth? What is a vertebrate? How did mammals survive when dinos didn’t?
Slide 18 - Why aren’t mammals giant like Dinosaurs? Why no giant cows?
Slide 19 - Placental mammals
Slide 20 - Placental mammals Most of the animals we will discuss are placental mammals and evolved during this period. How many non-placental animals can you name? Placental mammals have a placenta (fluid filled sack inside the uterus of the animal) through which the embryo and fetus are nourished while in utero.
Slide 21 - Placental mammals
Slide 22 - Placental mammals
Slide 23 - When did Animal Science Start? With the beginning of the Domestication of animals. Domestication = to tame for the use of humans. It takes thousands of years.
Slide 24 - Domestication A dogs jawbone was found in a cave in Siberia that dates back about 33,000 years ago. “Ancient dog skull unearthed in Siberia” (BBC News 2011) (http://www.bbc.co.uk/news/science-environment-14390679) What was the first domesticated animal? The Dog/Wolf was the first domesticated companion animal.
Slide 25 - Domestication Hunters and gathers: A nomadic lifestyle, no permanent settlements Domestication allowed them to settle down-they didn’t have to go look for animals and plants.
Slide 26 - Domestication Why was the wolf the first animal to be domesticated? -Warning/Guarding, Protection, Work
Slide 27 - Requirements to be considered domesticated Breeding is controlled by humans for many generations. Appearance and/or behavior is substantially different from wild ancestor. Animals could not survive on their own. “Taming” is a step of domestication, but a tamed animal is not completely domesticated.
Slide 28 - Domestication Probably wouldn’t last long in the wild…
Slide 29 - Domestication A tame animal is an animal which tolerates the presence of humans.  Tameness is a degree to which an animal accepts humans.
Slide 30 - Degrees of Domestication Wild- Full life without human intervention Raised in captivity/Captured from wild-Nurtured by humans but indistinguishable from wild relatives Ex. Cobras used for show, Asia elephants, Zoo animals Raised Commercially/Captive or Semidomesticated-Ranched or farmed for profit but indistinguishable from wild relatives Ex. Ostrich, deer, buffalo, oysters
Slide 31 - Degrees of Domestication Raised in captivity/Captured from wild
Slide 32 - Degrees of Domestication Raised Commercially/Captive or Semidomesticated
Slide 33 - Domestication degrees Feral-once were under human control but returned to the wild Ex. Mustangs, cats & dogs Hybrid- a combination of two animals, can be wild, domesticated, or both.
Slide 34 - Hybrids
Slide 35 - Key Questions What were some reasons that dogs were domesticated? What are the requirements to be considered domesticated? What the difference between tame and domesticated? What does wild, raised in captivity, captive/farmed, feral, and hybrid mean? What are some examples from each category?
 

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