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初級

完成時間大約為37 小時

建議:8 weeks of study; 4–5 hours/week...

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字幕:英語(English)

100% 在線

立即開始,按照自己的計劃學習。

可靈活調整截止日期

根據您的日程表重置截止日期。

初級

完成時間大約為37 小時

建議:8 weeks of study; 4–5 hours/week...

英語(English)

字幕:英語(English)

教學大綱 - 您將從這門課程中學到什麼

1
完成時間為 1 小時

Course Orientation

The series of videos and readings provided here are aimed at introducing this course in Lactation Biology. Course organization is described. Requirements for participation in the course are summarized. And, opportunities for learners to engage in the course content, as well as with each other, are indicated. ...
2 個視頻 (總計 10 分鐘), 5 個閱讀材料, 2 個測驗
2 個視頻
Lactation Word Cloud2分鐘
5 個閱讀材料
Course Syllabus10分鐘
About the Discussion Forums1分鐘
Social Media5分鐘
Updating Your Profile5分鐘
Study Aid Activities Overview5分鐘
2 個練習
Orientation Quiz5分鐘
Demographics Survey26分鐘
完成時間為 1 小時

Module 1: Introduction to Lactation Biology

In this module, we will introduce some basic definitions of terms related to the biology of lactation, provide an overview of milk, and briefly introduce the phylogenetic organization and evolution of mammals. Learning the definitions will be important for establishing a baseline vocabulary that will help reduce confusion about topics presented in subsequent videos. Milk, a primary product of the lactation process, will be introduced in an effort to provide a foundation for later modules in which milk and milk composition are explored in greater depth. The series of videos about mammals collectively offer a brief overview of the wide spectrum of these animal species, as well as some thoughts on how lactation came to be an integral part of the reproductive strategy of those species....
8 個視頻 (總計 58 分鐘), 2 個閱讀材料, 2 個測驗
8 個視頻
Definitions Part 27分鐘
An Overview of Milk5分鐘
How Much Milk?4分鐘
Milk Products6分鐘
Mammals10分鐘
Mammalian Evolution5分鐘
Why Lactate?9分鐘
2 個閱讀材料
Module 1 Overview5分鐘
Optional: Study Aids5分鐘
2 個練習
Lesson 1-1 Quiz10分鐘
Lesson 1-3 Quiz10分鐘
完成時間為 4 小時

Module 2: Mammary Gland Structure

One of the most fundamental requirements for understanding any aspect of biology is to appreciate the relationships that exist between form and function, or anatomy and physiology. In the case of lactation and the mammary gland, it is important to be able to visualize the various levels of mammary gland structure in order to understand how the mammary gland grows and functions. This module presents an overview of mammary gland anatomy and macrostructure using the dairy cow as our primary example. In addition, the tissue, cellular, and subcellular levels of mammary structure are presented. The module provides a conceptual foundation that will allow you to individually explore mammary gland anatomy and microstructure in other mammalian species. ...
19 個視頻 (總計 130 分鐘), 2 個閱讀材料, 5 個測驗
19 個視頻
Mammary Lobes6分鐘
Simple vs Complex Glands4分鐘
Mammary Anatomy at the Cow Side10分鐘
Mammary Suspensory System9分鐘
Median Suspensory Ligament2分鐘
Structure of Teats and Cisterns6分鐘
Supernumerary Teats4分鐘
Mammary Blood System10分鐘
Mammary Lymph System6分鐘
Mammary Nervous System3分鐘
Introduction to Mammary Microstructure6分鐘
Microstructure - 2D and 3D8分鐘
Lobules5分鐘
More on Lobules9分鐘
Alveoli and Their Environment7分鐘
Myoepithelial Cells5分鐘
Mammary Cell Ultrastructure Part 18分鐘
Mammary Cell Ultrastructure Part 25分鐘
2 個閱讀材料
Module 2 Overview5分鐘
Optional: Study Aids5分鐘
5 個練習
Lesson 2-1 Quiz10分鐘
Lesson 2-2 Quiz12分鐘
Lesson 2-3 Quiz10分鐘
Lesson 2-4 Quiz10分鐘
Week 1 Quiz30分鐘
2
完成時間為 5 小時

Module 3: Milk Composition

Milk is the product of the lactation process. Such a simple statement does not come close to doing justice to the complex nature of this biological fluid. In this module, we explore the major components of milk, as well as provide a basis for understanding milk as a product that we purchase in a store. Mechanisms of synthesis of milk components are introduced. And, several videos include discussions of the nature of differences in milk composition among mammalian species, including comparisons of cow milk with human milk....
27 個視頻 (總計 178 分鐘), 2 個閱讀材料, 7 個測驗
27 個視頻
Milk Components Demo2分鐘
Perspectives on Milk Composition7分鐘
Milk Under the Microscope5分鐘
Major Milk Fractions5分鐘
From Cow to Store10分鐘
Total Solids4分鐘
Lactose7分鐘
Lactose Intolerance4分鐘
Lactose Synthesis8分鐘
Milk Protein4分鐘
Casein8分鐘
Casein Demo5分鐘
Whey Proteins9分鐘
Milk Protein Synthesis8分鐘
Milk Fat4分鐘
Fatty Acids6分鐘
Milk Fat - Species Comparisons5分鐘
Milk Fat Synthesis15分鐘
Milk Minerals10分鐘
Milk Vitamins2分鐘
Cells in Milk6分鐘
More on Milk Cells1分鐘
Milk Bioactive Factors8分鐘
Species Comparisons of Milk7分鐘
Cow vs. Human Milk Composition5分鐘
Wrapping Up Milk Composition4分鐘
2 個閱讀材料
Module 3 Overview5分鐘
Optional: Study Aid5分鐘
7 個練習
Lesson 3-1 Quiz10分鐘
Lesson 3-2 Quiz10分鐘
Lesson 3-3 Quiz10分鐘
Lesson 3-4 Quiz10分鐘
Lesson 3-5 Quiz10分鐘
Lesson 3-6 Quiz10分鐘
Week 2 Quiz30分鐘
3
完成時間為 3 小時

Module 4: Mammary Gland Development

The tissue that we know of as the mammary gland (or udder or breast) may appear as relatively uncomplicated compared with some internal organs such as the heart or brain. The gland is outside the body wall, has a nipple or teat in most species, and has a series of ducts by which milk that is produced in microscopic blind tubes can be expressed from the gland. How can such a gland develop and what regulates that development? It turns out that the initial stage of development occurs extremely early in the fetal development of the animal. It then proceeds through a series of developmental phases, many of which are closely linked with the reproductive functioning of the animal, and eventually leading to the time when the gland is producing milk. Furthermore, the mammary gland is one of a few tissues that undergoes repeated cycles of development, functioning, regression, and redevelopment, again associated with the reproductive cycles of the animal. This module describes the various stages of mammary development and provides the framework for understanding how these stages relate to each other, as well as to the functionality of the gland....
11 個視頻 (總計 79 分鐘), 2 個閱讀材料, 4 個測驗
11 個視頻
Fetal Stage - 26分鐘
Fetal Stage - 36分鐘
Prepubertal Stage - 17分鐘
Prepubertal Stage - 23分鐘
Postpubertal Stage7分鐘
Development During Pregnancy - 12分鐘
Development During Pregnancy - 26分鐘
Development During Pregnancy - 35分鐘
Lactation7分鐘
Bovine Mammary Development13分鐘
2 個閱讀材料
Module 4 Overview5分鐘
Optional: Study Aid5分鐘
4 個練習
Lesson 4-1 Quiz10分鐘
Lesson 4-2 Quiz10分鐘
Lesson 4-3 Quiz10分鐘
Week 3 Quiz30分鐘
4
完成時間為 5 小時

Module 5: Mother & Neonate

The peripartum period, the time shortly before, during, and after giving birth, is a time of rapid changes in the mammary gland, the mother, and the neonate. Extensive physiological coordination occurs between the processes leading up to and giving birth, the formation of colostrum, the initiation of lactation in the mammary gland, and the subsequent removal of milk by the neonate. In this module, we explore how the mammary gland changes around the time of giving birth when the gland transitions from a non-lactating to a lactating state. Part of this transition is the production of colostrum, the first mammary secretion produced by the gland after giving birth. Another part of the transition is the changing regulation of mammary gland function from one being driven primarily by hormones associated with pregnancy and parturition to one where milk removal, by the neonate or milking machine, is the driving force in gland function after birth. In this module, we examine some basic characteristics of the neonate, how lactation is initiated (lactogenesis), and the formation and special components of colostrum (immunoglobulins) and their impact on the neonate....
17 個視頻 (總計 124 分鐘), 2 個閱讀材料, 7 個測驗
17 個視頻
A Cow Calving3分鐘
The Neonate8分鐘
Lactogenesis & Its Stages7分鐘
Secretory Differentiation8分鐘
Secretory Activation & Lactose Synthesis7分鐘
Hormonal Regulation5分鐘
Comparative Hormonal Regulation7分鐘
Prolactin - Sources4分鐘
Prolactin - Control of Secretion5分鐘
Prolactin - Other Regulation5分鐘
Colostrum Composition12分鐘
Immunoglobulins in Colostrum6分鐘
Colostrum & the Neonate10分鐘
Immunoglobulin Receptor6分鐘
Mammary Transport of Immunoglobulin7分鐘
Immunoglobulin Transport to the Neonate6分鐘
2 個閱讀材料
Module 5 Overview5分鐘
Optional: Study Aid5分鐘
6 個練習
Lesson 5-1 Quiz10分鐘
Lesson 5-2 Quiz10分鐘
Lesson 5-3 Quiz10分鐘
Lesson 5-4 Quiz10分鐘
Lesson 5-5 Quiz10分鐘
Week 4 Quiz30分鐘
5
完成時間為 5 小時

Module 6: Lactation

In this module, we explore the many facets of lactation as a complex physiological process. We will find that removal of the milk in the gland is critical to continued production of that fluid. The interactions between milk removal, the systemic factors stimulating the gland to produce milk, such as several hormones, and the local factors that inhibit further milk secretion are examined. Some of the effects of milk removal, as well as the absence of milk removal, are discussed in this series of videos. The responses of the mammary gland to milk removal provide a means of understanding the impact of management practices on lactation. ...
27 個視頻 (總計 214 分鐘), 2 個閱讀材料, 5 個測驗
27 個視頻
Systemic vs Local Regulation10分鐘
Galactogogues8分鐘
Prolactin5分鐘
Measurement of Milk Production7分鐘
Prolactin - Nonruminants9分鐘
Prolactin - Ruminants 16分鐘
Prolactin - Ruminants 29分鐘
Growth Hormone - Cows8分鐘
Growth Hormone - Rats10分鐘
Other Hormones9分鐘
Feedback Inhibition of Milk Secretion10分鐘
Frequency of Milk Removal5分鐘
Cisternal vs Alveolar Milk Pools7分鐘
Frequency of Milk Removal - Cows6分鐘
Determinants of Milk Yield6分鐘
Intensity of Milk Removal9分鐘
Milk Stasis4分鐘
Mammary Secretions During Involution10分鐘
Mammary Tissue During Involution8分鐘
Dry Period9分鐘
Persistency & Relactation10分鐘
Mammary Involution - Sows9分鐘
Compensatory Milk Production9分鐘
Lactational History - Cows3分鐘
Lactational History - Sows5分鐘
Lactational History - Rats6分鐘
2 個閱讀材料
Module 6 Overview5分鐘
Optional: Study Aid5分鐘
5 個練習
Lesson 6-1 Quiz10分鐘
Lesson 6-2 Quiz10分鐘
Lesson 6-3 Quiz10分鐘
Lesson 6-4 Quiz10分鐘
Week 5 Quiz30分鐘
6
完成時間為 2 小時

Module 7: Milk Ejection

This module introduces the physiological process known as the milk ejection reflex. The neural and endocrine pathways of this process are discussed, as is a broad overview of the hormone responsible for milk ejection, oxytocin. In addition, the consequences of ineffective milk ejection and ways that have been tried to manipulate the milk ejection process are presented. ...
15 個視頻 (總計 95 分鐘), 2 個閱讀材料, 3 個測驗
15 個視頻
Neuroendocrine Reflex5分鐘
Timing of Milk Ejection4分鐘
Rise in Intramammary Pressure3分鐘
Mammary Structure Changes During Ejection4分鐘
Microstucture of Milk Ejection2分鐘
Oxytocin5分鐘
Sources of Oxytocin10分鐘
Other Functions of Oxytocin4分鐘
Residual Milk8分鐘
Disturbed Milk Flow9分鐘
Manipulation of Milk Ejection6分鐘
Inhibition of Milk Ejection6分鐘
Species Comparisons9分鐘
Milk Ejection Demo - Optional7分鐘
2 個閱讀材料
Module 7 Overview5分鐘
Optional: Study Aid5分鐘
3 個練習
Lesson 7-1 Quiz10分鐘
Lesson 7-2 Quiz10分鐘
Lesson 7-3 Quiz10分鐘
完成時間為 3 小時

Module 8: Atypical Lactation

We typically assume that development of the mammary gland and production of milk are closely regulated by and are coordinated with the reproductive functioning of the animal. Most often that is true. From the knowledge gained from other modules in this course, it is clear that mammary gland development and lactogenesis are heavily regulated by hormones. As it turns out, the presence of mammary gland-regulating hormones is not always directly associated with the reproductive status of the animal. If the hormone activity is present, regardless of its source, it may impact mammary gland development and function. The series of videos in this module presents an overview of what we are calling atypical lactation. That is when the mammary gland undergoes development and lactation in the absence of the usual physiological cues that we associate with the process, such as an animal giving birth....
7 個視頻 (總計 74 分鐘), 2 個閱讀材料, 3 個測驗
7 個視頻
Estrogen5分鐘
Phytoestrogen7分鐘
Zearalenone7分鐘
Elevated Prolactin14分鐘
Relactation, Allosucking, Communal Nursing12分鐘
Lactation in Males15分鐘
2 個閱讀材料
Module 8 Overview5分鐘
Optional: Study Aid5分鐘
2 個練習
Lesson 8-1 Quiz10分鐘
Week 6 Quiz30分鐘
7
完成時間為 6 小時

Module 9: Mastitis

The mammary gland is an excretory gland, meaning that it produces a fluid that is secreted to the outside of the body. These secretions leave the gland through a series of ducts that eventually open to the outside of the skin. The presence of these openings not only means that the mammary secretion can leave the gland, it also means that microorganisms can enter the gland. When that happens, the gland may become infected and present as a disease known as mastitis. Mastitis is an inflammation of the mammary gland, the inflammation most commonly being caused by an infection by a pathogen. Mastitis is the most costly disease in dairy cattle, but is also prevalent in other species, including our own. We will examine many of the aspects of how this disease is manifested using the dairy cow as our primary example in this module. We will examine mastitis at the level of an individual cow, as well as at the whole herd level. And then to fully integrate and apply the knowledge gained about this disease, we will examine several real-life cases of herd-level mastitis problems faced by dairy producers....
19 個視頻 (總計 189 分鐘), 3 個閱讀材料, 6 個測驗
19 個視頻
Milk Components5分鐘
Host-Agent-Environment3分鐘
First Line of Defense6分鐘
Inflammatory Response11分鐘
Detection8分鐘
Treatment & Control8分鐘
Prevention10分鐘
Mastitis Syndromes11分鐘
Mastitis Types7分鐘
Contagious Pathogens7分鐘
Environmental Pathogens6分鐘
Other Pathogens5分鐘
Mastitis at a Herd-Level8分鐘
Contagious vs Environmental5分鐘
Milking Procedure9分鐘
Mastitis Example Case 120分鐘
Mastitis Example Case 224分鐘
Mastitis Example Case 319分鐘
3 個閱讀材料
Module 9 Overview5分鐘
Optional: Study Aid5分鐘
Mastitis Cases Answers5分鐘
5 個練習
Lesson 9-1 Quiz10分鐘
Lesson 9-2 Quiz10分鐘
Lesson 9-3 Quiz10分鐘
Lesson 9-4 Quiz10分鐘
Week 7 Quiz30分鐘
8
完成時間為 4 小時

Module 10: Comparative Lactation

In this module, we provide a series of videos that expands what has already been learned in other modules about the basic principles of lactation biology to a range of mammalian species. These videos focus on these animals in their native state, as well as some that have been domesticated for use as dairy animals and domestic livestock. This module is optional....
21 個視頻 (總計 188 分鐘), 2 個閱讀材料, 1 個測驗
21 個視頻
Swine Lactation: Mammary Anatomy & Development10分鐘
Swine Lactation: Milk Composition7分鐘
Swine Lactation: Lactogenesis & Early Lactation11分鐘
Swine Lactation: Milk Production7分鐘
Swine Lactation: Milk Removal & Sucking Intensity8分鐘
Swine Lactation: Milk Ejection9分鐘
Swine Lactation: Mammary Involution8分鐘
Swine Lactation: Prolactin & Lactation14分鐘
Swine Lactation: Lactational History11分鐘
Swine Lactation: Mastitis 19分鐘
Swine Lactation: Mastitis 210分鐘
Swine Lactation: Mastitis 36分鐘
Elephant Lactation 111分鐘
Elephant Lactation 210分鐘
Dairy Goats: Farm Introduction7分鐘
Dairy Goats: The Kids5分鐘
Dairy Goats: The Does2分鐘
Dairy Goats: Milking Parlor and Procedures5分鐘
Dairy Goats: Cheese Introduction7分鐘
Dairy Goats: Making Cheese11分鐘
2 個閱讀材料
Module 10 Overview5分鐘
Solutions to Crossword Puzzles10分鐘
1 個練習
End of Course Survey52分鐘
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創建者 MTMar 1st 2019

was great course would love to see a little more of human lactation in here to compare with. i enjoyed the corse just getting grading was slow.

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Dr. Walter Hurley, PhD

Professor Emeritus
Department of Animal Sciences

關於 伊利诺伊大学香槟分校

The University of Illinois at Urbana-Champaign is a world leader in research, teaching and public engagement, distinguished by the breadth of its programs, broad academic excellence, and internationally renowned faculty and alumni. Illinois serves the world by creating knowledge, preparing students for lives of impact, and finding solutions to critical societal needs. ...

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