5.5. Predators and Prey: The Origins of Stress

Loading...

来自 University of Illinois at Urbana-Champaign 的课程

Sustainable Food Production Through Livestock Health Management

89 个评分

University of Illinois at Urbana-Champaign

Sustainable Food Production Through Livestock Health Management

89 个评分

Learn about the impact of infectious disease on sustainable animal-based food production by understanding the science of growth, immunity, and infection and by learning the problem-solving skills needed to advance animal health and food production through optimal management practices. There is a growing global need in agricultural production for a workforce that is capable of integrating knowledge of animal health and production with an understanding of consumer preferences in the context of economic reality, business efficiency, and ethical constraint. However, current evidence suggests that there is a growing shortage of people with the knowledge and problem-solving skills required to match the rapid advances being made in animal health, science, and food production. The results of this shortage are wide-ranging and could lead to challenges in food security and agricultural economic competitiveness in some countries. In this course we will explore the effect of infectious disease on sustainable animal-based food production. The content and learning outcomes of this new course will be designed to be relevant across different food production sectors (i.e., beef, dairy, poultry, and pigs). While the instructors will provide the participants with a strong scientific base for understanding the impact of infectious disease in animal-based food production, the emphasis of the material will be on practical problem-solving and will be directed towards equipping participants with a platform for developing the skills needed to contribute to sustainable food production.

从本节课中

Week 5: Our Role in Preventing Infectious Disease

This week we will be discussing the role of caregivers in managing, preventing, and controlling infectious disease in livestock-based production systems, and help you appreciate how an understanding of the prey-predator relationship can be used in the design of management strategies to offset physical, physiological, and psychological stress.

5.1. Building Defense by Building a Fence 9:31

5.2. Maximizing Defense by Customizing the Fence 8:34

5.3. Stress Biology: Caring for the Inside First 10:45

5.4. Behavior: The Window to Stress 6:18

5.5. Predators and Prey: The Origins of Stress 3:42

5.6. Thoughtful Management: The Foundation of Well-Being 5:42

5.7. Changing Stress Part 1: Movement 12:07

5.8. Changing Stress Part 2: Thermal 7:09

与讲师见面

Dr. Jim Lowe, DVM, MS, Dip ABVP (Food Animal)
Associate Professor
Integrated Food Animal Management Systems, College of Veterinary Medicine
Dr. Brian Aldridge, BVSc, MS, PhD, Dip ACVIM (Large Animal), MRCVS
Clinical Professor
Integrated Food Animal Management Systems, College of Veterinary Medicine

[SOUND]

[MUSIC]

So when we consider designing perfect environments and management systems.

We have to realize that a lot of our animals, before they were domesticated,

and even as they're domesticated, are prey animals.

So some of the response we're going to see,

they, they might treat us as predators.

So we have to design systems with that in mind.

So we're just going to see here how our sheep here respond to a dog.

And this dog, they're used to each other.

But in some way the sheep are still going to see this as a predator.

So the dog's not going to harm the sheep at all.

They're familiar with each other, but look, now the sheep are detecting him.

You see some of the, some of the sheep start to recognize that there's a,

a predator in the area.

The dog's not acting at all like a predator,

and that's because he knows them very well.

But you can see, so the sheep, they're not afraid, but

they're aware that a predator is present.

So they're beginning to gather together.

They were all individually spread and

now they're starting to group up, because there's protection.

At the moment, this, this isn't stress, there's no fear taking place.

The normal prey behaviors are beginning to take place.

So see that the sheep are now gathering together.

And the leaders of the flock will be watching the potential predator.

So not all of the sheep are looking.

Some of them are just looking over the shoulders.

And they tend to be the leaders in the flock.

But again, that's not fear.

This isn't stressful.

This is just the expression of normal predator behavior.

So as we design our management systems we have to take into consideration what we

know is normal behavior for these animals.

So bit by bit, just nice and slowly they're just gathering into a group.

There's safety in numbers.

Again, some of the sheep continue to graze.

They're not even, they're not even worried.

Now we have a sheep that's coming forward a little bit.

So that would be one of the more dominant sheep.

Maybe who could take, if that was a real predator, would take a protective stance.

And you'll see the the lambs and the females will often go out to the back.

And if there was a ram out there,

the ram would probably place itself near the front.

And this is a protective, this is a population homeostasis,

this is a normal response to stress.

They would have, not have high circulating catacolomines,

they would not have high circulating cortisol at the moment.

This is all within normal behavior.

So that's why we can use dogs to move animals.

Not to create fear in them.

But actually to take into consideration they're prey,

predator behavior to move them and to optimize our management system.

And you'll see as the potential predator gets a little bit closer

the sheep will group.

Again, these, these sheep aren't even looking.

One or two are and now, if this was a sheepdog we could move them.

So, we could use this dog to move the sheep where we want.

But to do it nice and gently.

Taking into consideration their well being.

But if we needed to handle them or give them medication, or

examine them for disease.

Then we could, we can use a dog understanding their prey/predator

tendencies.

>> That was Dr. Denny French and his faithful, his faithful dog.

Not a predator at all.

Big friendly lump called Tanner.

[MUSIC]

探索我们的目录

免费加入并获得个性化推荐、更新和优惠。

Coursera 致力于普及全世界最好的教育，它与全球一流大学和机构合作提供在线课程。

© 2018 Coursera Inc. 保留所有权利。

通过 App Store 下载

通过 Google Play 获取