Unit B Understanding Animal Body Systems. Lesson 7 Understanding Animal Reproduction
|
|
- Grant Hopkins
- 5 years ago
- Views:
Transcription
1 Unit B Understanding Animal Body Systems Lesson 7 Understanding Animal Reproduction 1
2 Terms Anestrus Artificial insemination Castration Cervix Copulation Diestrus Egg Ejaculation Estrous cycle Estrus Fertilization Gestation Heat Insemination Lactation Metestrus Natural insemination Neutering 2
3 Terms Ovary Oviduct Parturition Penis Proestrus Prostate gland Puberty 3
4 Why is reproduction important? Reproduction is the process by which animals produce offspring. Offspring are the same species and have traits of their parents. Parents are selected and mated to achieve certain goals with offspring. 4
5 Goals of Reproduction Examples of goals include to produce offspring with high milk productivity or meaty carcasses. Reproduction results in new animals that are raised for the products they produce. Examples of products include meat, eggs, milk, and wool. 5
6 Animal Reproduction Most animals are produced with sexual reproduction. Sexual reproduction is the union of a sperm and an egg. Two parents are required. Sperm is the sex cell of male animals. They are produced in the testes. The egg or ovum is the sex cell of female animals. They are produced in the ovaries. 6
7 Animal Reproduction Fertilization is the process by which the union of a sperm and an egg occurs. It is also known as conception. The union of the sperm with the egg occurs in the reproductive tract of the female. The process of placing sperm in the reproductive tract of the female is known as insemination. 7
8 Animal Reproduction Natural insemination occurs when a male of a species mates with a female of the same species. Sperm are placed in the female reproductive tract by the male during copulation. Copulation is the mating process in which sperm are ejaculated from the penis of the male in the vagina of the female. Females must be receptive to males at a time in the estrus cycle known as heat. 8
9 Animal Reproduction Artificial insemination is used in some situations, such as with dairy cows. Artificial insemination is placing semen collected from a male in the female reproductive tract using equipment designed for the purpose. Artificial insemination must be done when the female is in heat. 9
10 Animal Reproduction Once an egg has been fertilized, it becomes an embryo that attaches itself to the uterus for nourishment. The female is pregnant. The embryo goes through a time of development and becomes a fetus. The fetus develops to a stage where it is born and can live outside the uterus. 10
11 Sexual Classifications Sexual classification is the condition of an animal based on its age and sexual condition. It includes animals that are capable of reproduction as well as those that are not capable of reproduction. 11
12 Sexual Classifications An animal can be made incapable of reproduction by removing the ovaries or testes or altering the condition of the reproductive organs so that they are no longer fertile. The animals are not capable of conception. 12
13 Animals incapable of reproduction Castration is the process of removing the testes from a male. It is a management practice used on young male animals. Castration eliminates unwanted breeding. It also promotes growth and development of young animals in more desirable ways with food animal production. Castration may be done surgically or with other methods. 13
14 Animals incapable of reproduction Neutering is the process of making a female incapable of reproduction. It is also known as spaying. The ovaries of the female are removed or other procedures are used to render the female incapable of conception. 14
15 Sexual Classifications A number of terms are used to describe the sexual classification of animals. These terms vary by species, age, and gender. For example, a steer is a male bovine castrated at a young age and before sexual maturity was reached. Textbooks and references usually have lists of terms for the sexual classification of common species. 15
16 Species Young Mature Male Mature Female Castrated Male Cattle Calf Bull Cow Steer Sheep Lamb Ram Ewe Wether Goat Kid Buck Doe Wether Chicken Chick Rooster Hen Capon Horse Foal Stallion Mare Gelding Female Filly Male - Colt 16
17 What are some of the common breeding systems used in livestock production? Straightbreeding is mating animals of the same breed. There are several variations of this system. Some of the most common are: Purebred Breeding A purebred is an animal of a breed in which both parents of the animal must have been purebred. Inbreeding is the mating of related animals. This increases the genetic purity of the stock produced. 17
18 Inbreeding Types 18 Closebreeding is the most intensive form of inbreeding, in which the animals being mated are very closely related and can be traced back to more than one common ancestor.
19 Inbreeding Types 19 Linebreeding refers to mating animals that are more distantly related and can be traced back to one common ancestor.
20 Grading Up 20 Grading up is the mating of purebred sires to grade females. A grade animal is any animal not eligible for registry as a purebred. This is done as less expensive way to improve the quality of animals on a farm or ranch.
21 Crossbreeding Crossbreeding is the mating of two animals from different breeds. The resulting offspring is a hybrid. This generally results in improved traits in the offspring. Superior traits that result from crossbreeding are called hybrid vigor or heterosis. 21
22 Estrous Cycle The estrous cycle is the phases in the reproductive cycle between periods of estrus. These are the phases of reproductive readiness in the reproductive system of a mature female. The cycle does not occur during pregnancy nor when a female is in anestrus. Anestrus is the absence of cycling. It may occur due to disease, not being of reproductive age, or other conditions. 22
23 Estrous Cycle The estrous cycle is comprised of four phases. The phases occur in a definite sequence unless the female is pregnant. 23
24 Phases of the Estrous Cycle Estrus is the phase when a female is in heat. The animal is receptive to mating and will stand for copulation with a male. Females exhibit signs of heat. An enlarged vulva and a discharge from it are signs. Some females exhibit behaviors indicating readiness for mating such as when a cow mounts another cow in the mating position. 24
25 Phases of the Estrous Cycle Metestrus is the phase following heat. Ovulation occurs during metestrus as do other processes that help maintain a pregnancy should conception occur. 25
26 Phases of the Estrous Cycle Diestrus is the phase in the estrous cycle when the reproductive system assumes that conception has occurred, even if it has not. Diestrus is several days long depending on the species of animal. 26
27 Phases of the Estrous Cycle Proestrus is the period following diestrus in which preparation is being made by the reproductive system for the next heat period and ovulation. If conception has occurred, the estrous cycle ceases until it is renewed after gestation and parturition. 27
28 Phases of the Estrous Cycle Animal producers can be more efficient in animal reproductive management if they know the phases of estrous. Careful observation by a trained producer and records on reproductive cycles will promote breeding to assure the production of young animals at the best time. For example, cattle producers often breed cows to assure calving in the spring when pasture grasses are beginning to grow. This allows a cow to produce maximum milk for the nutrition and growth of the calf. 28
29 Reproductive Development of Animals Animals of a species begin life as either a male or female. Their development as a member of their species includes reproductive development for their gender. Reproductive development follows fairly definite stages and processes. 29
30 Reproductive Development of Animals Prepuberty is the stage of life of a young animal before it is capable of reproduction. Sufficient development has not been reached for an animal to reproduce. 30
31 Reproductive Development of Animals Puberty is the stage when an animal reaches a level of sexual development where it is capable of reproduction. Puberty occurs in both males and females. 31
32 Puberty With females, the estrous cycle results in the release of mature eggs that can support the mating, conception, and gestation processes. With males, the animal is capable of producing viable sperm. Age of puberty varies with animal species and other conditions such as nutrition and health condition. Examples of when puberty is reached are: cattle 8-12 months, sheep 5-7 months, and horses months. 32
33 Gestation Gestation is the period when a female is pregnant. The length of gestation varies with species though it tends to be consistent among members of the same species. For example, the gestation period is 155 days for ewes and 337 days for a mare. The animal gives birth at the end of gestation. 33
34 Parturition Parturition is the process of giving birth. Hormones are produced to support the birth process and prepare for lactation. 34
35 Lactation Lactation is the secretion of milk by the mammary glands of a female. It is initiated by hormone activity. Lactation lasts for several months following parturition. 35
36 Mating Behavior Mating behavior is a part of reproductive development. Both males and females of a species exhibit mating behavior. With males, this includes libido (desire to mate) and social status within a herd. With females, receptivity to mating occurs during heat. 36
37 Summary 1. What is the importance of animal reproduction? 2. List the sexual classification of animals for major species. 3. What are the different breeding programs used in your area? 4. Describe the phases of the estrous cycle 5. How does reproductive development of animals occur? 37
1. Describe the importance and process of animal reproduction. 2. List the sexual classification of animals for major species.
Unit B: Understanding Animal Body Systems Lesson 7: Understanding Animal Reproduction Student Learning Objectives: Instruction in this lesson should result in students achieving the following objectives:
More informationUnderstanding Natural Animal Reproduction
Lesson B4 2 Understanding Natural Animal Reproduction Unit B. Animal Science and the Industry Problem Area 4. Understanding Animal Reproduction and Biotechnology Lesson 2. Understanding Natural Animal
More informationDraft. Draft. 2. The system of breeding which breeds a registered male to a registered female animal of the same breed is:
Student Name: Draft Teacher: Date: District: Wake County Assessment: 9_12 Agriculture AA21 - Animal Science I Test 4 Description: Test 7: Reproduction & Genetics Form: 501 Draft 1. Superior traits of offspring
More informationASA Presentation Notes Lesson 6.2
ASA Presentation Notes Lesson 6.2 Unit Name: Unit 6 - Animal Reproduction Lesson Topic: Lesson 6.2 Generating Generations Presentation on: Livestock Breeding Systems Breeding Systems. Straight breeding.
More informationUnit B Understanding Animal Body Systems. Lesson 6 Anatomy and Physiology of Animal Reproduction Systems
Unit B Understanding Animal Body Systems Lesson 6 Anatomy and Physiology of Animal Reproduction Systems 1 Terms Alimentary canal Bladder Cervix Clitoris Cloaca Copulation Cowper s gland Epididymis Fallopian
More informationBasic Reproduction & Genetics. Steve Pritchard UNL Extension Educator Boone-Nance Counties
Basic Reproduction & Genetics Steve Pritchard UNL Extension Educator Boone-Nance Counties Hormonal Regulation of the Estrous Cycle Several hormones regulate the estrous cycle Changes in the concentrations
More informationList of Equipment, Tools, Supplies, and Facilities:
Unit B: Understanding Animal Body Systems Lesson 6: Anatomy and Physiology of Animal Reproductive Systems Student Learning Objectives: Instruction in this lesson should result in students achieving the
More informationDomestic Animal Behavior ANSC 3318 SEXUAL BEHAVIOR. Image courtesy : USDA ARS Image Library
SEXUAL BEHAVIOR Image courtesy : USDA ARS Image Library Importance of Sexual Behavior Without reproduction, life would come to an end! In production situations, it is economically important to have good
More informationParts of Reproductive Systems
4-H Animal Science Lesson Plan Reproduction Level 2 Parts of Reproductive Systems www.uidaho.edu/extension/4h Meranda Small, Extension Educator Goal (learning objective) Youth will learn what the major
More informationLesson 3: Understanding Animal Reproduction Technology
Lesson 3: Understanding Animal Reproduction Technology 1 Terms Artificial insemination Cloning Donor female Embryo transfer Estrous synchronization Genetic engineering Progestin Prostaglandin Recipient
More informationSmall Ruminant Reproductive Management Workshop
Small Ruminant Reproductive Management Workshop Animal Nutrition and Physiology Center, North Dakota State University Sponsors: American Sheep and Goat Center, North Dakota State University, University
More informationEMBRYO TRANSFER ANIMAL SCIENCE 8818-B INTRODUCTION
ANIMAL SCIENCE 8818-B EMBRYO TRANSFER INTRODUCTION Embryo transfer* is a process by which an embryo is collected from a donor female and then transferred into a recipient female where the embryo completes
More informationMale Reproductive System
Male Reproductive System The male reproductive system consists of a number of sex organs that are part of the reproductive process. The following sections describe the function of each part of the male
More informationFemale and Male Reproductive Systems
Female and Male Reproductive Systems Reproductive System: Organs that make possible the production of offspring. Female Reproductive System Female Reproductive System: Words to be familiar with ESTROGEN
More informationREPRODUCTION & GENETICS. Hormones
REPRODUCTION & GENETICS Hormones http://www.youtube.com/watch?v=np0wfu_mgzo Objectives 2 Define what hormones are; Compare and contrast the male and female hormones; Explain what each hormone in the mail
More informationSTUDY ON FACTORS AFFECTING THE CONCEPTION RATE IN RED CHITTAGONG COWS. Abstract
Bang. J. Anim. Sci. 2010, 39(1&2) : 52 57 ISSN 0003-3588 STUDY ON FACTORS AFFECTING THE CONCEPTION RATE IN RED CHITTAGONG COWS M. M. R. Mufti, M. K. Alam, M. S. Sarker, A. B. M. R. Bostami and N. G. Das
More informationIn domestic animals, we have limited period of estrus (sexual receptivity) and the term estrous
REPRODUCTIVE CYCLES 1. Estrous cycle 2. Menstrual cycle In domestic animals, we have limited period of estrus (sexual receptivity) and the term estrous cycle is used. The onset of proestrus defines the
More informationAnimal Fertilization Technologies
Appendix II-C Animal Fertilization Technologies Sperm storage The freezing of semen to 196 C, storage for an indefinite time, followed by thawing and successful insemination. Conception rates at first
More informationDEVELOPMENTS in reproduction continue
Important Reproductive Technologies DEVELOPMENTS in reproduction continue to advance. Like humans, animals struggle with reproduction from time to time. Challenges facing the animal industry include the
More informationChapter 22 The Reproductive System (I)
Chapter 22 The Reproductive System (I) An Overview of Reproductive Physiology o The Male Reproductive System o The Female Reproductive System 22.1 Reproductive System Overview Reproductive system = all
More informationNew Assisted Reproductive Techniques for Horses. Dirk K. Vanderwall, DVM, PhD, Dipl. ACT
New Assisted Reproductive Techniques for Horses Dirk K. Vanderwall, DVM, PhD, Dipl. ACT Northwest Equine Reproduction Laboratory Department of Animal and Veterinary Science Center for Reproductive Biology
More informationReproductive system Presented by: Ms. Priya
Reproductive system Presented by: Ms. Priya Reproductive system Female reproductive system has two functions: produce egg cells to protect and nourish the offspring (baby) until birth. Male reproductive
More informationOverview of Animal Breeding
Overview of Animal Breeding 1 Required Information Successful animal breeding requires 1. the collection and storage of data on individually identified animals; 2. complete pedigree information about the
More informationArtificial Insemination in Swine
Artificial Insemination in Swine Artificial Insemination in Swine Routinely practiced on swine farms More efficient and effective use of boars AI centers distribute semen from genetically valuable boars
More informationAP Biology Ch ANIMAL REPRODUCTION. Using only what you already know (you cannot look up anything) complete the chart below.
AP Biology Ch. 46 - ANIMAL REPRODUCTION Using only what you already know (you cannot look up anything) complete the chart below. I. Overview of Animal Reproduction A. Both asexual and sexual reproduction
More informationReproductive System:
Reproductive System: Purpose: The reproductive system combines genetic information from both parents (in most animals) to produce new life forms. This system produces sex cells (gametes), delivers them,
More informationUse and Added Value of AI Data for Genetic Evaluation and Dairy Cattle Improvement
Use and Added Value of AI Data for Genetic Evaluation and Dairy Cattle Improvement Gerrit Kistemaker & Brian Van Doormaal Herd management Use of AI Data Future calving dates Diagnose cow fertility problems
More informationRecommended Resources: The following resources may be useful in teaching this
Unit B: Anatomy and Physiology of Poultry Lesson 3: Natural Poultry Reproduction Student Learning Objectives: Instruction in this lesson should result in students achieving the following objectives: 1.
More informationSelect the Sex of Your Next Calf Prior to Mating: Using Sexed Semen 1
AN163 Select the Sex of Your Next Calf Prior to Mating: Using Sexed Semen 1 Gary R. Hansen 2 Introduction Through recent advances in reproductive technology, scientists have the ability to pre-select the
More informationUnit B: Anatomy and Physiology of Poultry. Lesson 4: Artificial Poultry Reproduction
Unit B: Anatomy and Physiology of Poultry Lesson 4: Artificial Poultry Reproduction 1 1 Terms Artificial insemination Sexed semen Standing heat 2 2 I. Artificial insemination is the placing of semen in
More informationUNDERSTANDING EMBRYO-TRANSFER (ET) A GUIDE TO THE BENEFIT OF ET IN YOUR HERD
UNDERSTANDING EMBRYO-TRANSFER (ET) A GUIDE TO THE BENEFIT OF ET IN YOUR HERD Embryo Transfer allows one superior cow to produce a greater number of calves than normal in her lifetime TABLE OF CONTENTS
More informationThe Male Reproductive System
The Male Reproductive System Male Reproductive System The male sex cell is a sperm cell The whole purpose is to produce and deliver sperm to the egg Structure of a Human Sperm Cell Streamlined, built to
More informationStudent Academic Learning Services Page 1 of 5 Reproductive System Practice
Student Academic Learning Services Page 1 of 5 Reproductive System Practice Fill in the blanks using the words listed: accessory glands, vas deferens, penis, scrotum, fallopian tube, testes, urethra, vagina,
More informationProceedings, Applied Reproductive Strategies in Beef Cattle December 2 and 3, 2008, Fort Collins, CO
Proceedings, Applied Reproductive Strategies in Beef Cattle December 2 and 3, 2008, Fort Collins, CO NEW ADVANCEMENTS IN REPRODUCTIVE TECHNOLOGY FOR CATTLE George E. Seidel, Jr. Animal Reproduction and
More informationVM 744 THERIOGENOLOGY Spring 2013
VM 744 THERIOGENOLOGY Spring 2013 Credits-3 Coordinator: Patrick M., DVM, PhD, Diplomate ACT Department of Clinical Sciences Office: Equine Reproduction Laboratory Phone: 491-8626 email: pmccue@colostate.edu
More informationEmbryo Transfer. Objectives. Performing Embryo Transfer. History of Embryo Transfer. Benefits for Embryo Transfer
33 Embryo Transfer 305 Daniel Stein and Glenn Selk Objectives Discuss the history of embryo transfer. Learn the benefits of embryo transfer. Learn how to transfer embryos. Discuss the potential costs of
More informationAnimal Reproduction Chapter 46. Fission. Budding. Parthenogenesis. Fragmentation 11/27/2017
Animal Reproduction Chapter 46 Both asexual and sexual reproduction occur in the animal kingdom Sexual reproduction is the creation of an offspring by fusion of a male gamete (sperm) and female gamete
More informationPERIPARTURIENT DISORDERS IN DAIRY COWS. J.S. Stevenson. Introduction
5 a PERIPARTURIENT DISORDERS IN DAIRY COWS J.S. Stevenson I! e Introduction The economic climate in the dairy industry requires producers to operate efficiently to remain competitive. Attention to details
More informationCourse: Animal Production. Instructor: Ms. Hutchinson. Objectives: After completing this unit of instruction, students will be able to:
Course: Animal Production Unit Title: Hormones TEKS: 130.3 (C)(6)(A) Instructor: Ms. Hutchinson Objectives: After completing this unit of instruction, students will be able to: A. Define what hormones
More informationCHAPTER 1: ANIMAL ECOLOGY AND FORAGING BEHAVIOR... 1
Table of Contents About the Authors... xii Acknowledgments... xiv CHAPTER 1: ANIMAL ECOLOGY AND FORAGING BEHAVIOR... 1 Introduction... 1 The Ecological Context... 1 Herbivore Adaptation and Foraging Habits...
More informationChapter 46 ~ Animal Reproduction
Chapter 46 ~ Animal Reproduction Overview Asexual (one parent) fission (parent separation) budding (corals) fragmentation & regeneration (inverts) parthenogenesis Sexual (fusion of haploid gametes) gametes
More informationSample Provincial exam Q s: Reproduction
Sample Provincial exam Q s: Reproduction 11. Functions Testosterone Makes the male sex organs function normally, and also inhibits hypothalamus s release of GnRH and thus LH & FSH and thus testosterone
More informationColorado Agriscience Curriculum. Unit 3 Anatomy and Physiology Lesson 1 Animal Growth and Development
Colorado Agriscience Curriculum Unit 3 Anatomy and Physiology Lesson 1 Animal Growth and Development Periods of Growth There are two separate stages we are concerned with in animal growth and development.
More informationReproductive Anatomy and Physiology of Cattle. Heat detection and Timing of Insemination s
10/4/2009 Reproductive Anatomy and Physiology of Cattle AI Technique in Cattle 1930 s Handling of Frozen Semen 1950 s Heat detection and Timing of Insemination - 1970 s Sexed Semen 1980 s 10/4/2009 10/4/2009
More informationTECH EXTENSION. How low can we go? Finding a practical path to produce more pigs from fewer and better boars.
TECH EXTENSION How low can we go? Finding a practical path to produce more pigs from fewer and better boars www.fastgenetics.com Artificial insemination (AI) has become the standard breeding method for
More informationWhat are the main functions of the male reproductive system? 1. Produce sperm 2. Deposit sperm into the female 3. Provide a pathway for the removal
What are the main functions of the male reproductive system? 1. Produce sperm 2. Deposit sperm into the female 3. Provide a pathway for the removal of urine Where is sperm produced? -In the 2 testes What
More informationUsing High Accuracy Sires. Dona Goede Livestock Specialist
Using High Accuracy Sires Dona Goede Livestock Specialist High Accuracy = AI Young bulls do not have high accuracy EPD s will change AI bulls can have extremely high accuracy What is Accuracy? Bull A Yearling
More informationPuberty and Reproduction
Puberty and Reproduction A Lesson Plan from Rights, Respect, Responsibility: A K-12 Curriculum Fostering respect and responsibility through age-appropriate sexuality education. NSES ALIGNMENT: By the end
More informationby Bergero and Cynthia Préfontaine photos by Shary B. Akers Introduction
by Bergero and Cynthia Préfontaine photos by Shary B. Akers Introduction The embryo transfer (ET= embryo transfer) is a breeding method or reproductive technology, where an embryo is flushed from a donor
More informationto ensure the. Sexual reproduction requires the (from the mother) by a (from the father). Fertilization is the fusion of.
The Reproductive System Fill-In Notes Purpose of life: to ensure the. Stages of Human Development Sexual reproduction requires the (from the mother) by a (from the father). Fertilization is the fusion
More informationLIFE SCIENCES Grade 12 REPRODUCTION 30 JUNE 2014
REPRODUCTION 30 JUNE 2014 Checklist Make sure you Can describe different reproductive strategies of vertebrates Are able to identify the structure and function of the male and female reproductive organs
More informationASC 321 DAIRY CATTLE EVALUATION. (2) Evaluation of dairy cattle for type characteristics. Laboratory, four hours.
106 INTRODUCTION TO ANIMAL SCIENCES. (3) Relationships of food production and consumption to income of humans throughout the world; major livestock (beef and dairy cattle, sheep, swine, poultry and horses)
More information1. Both asexual and sexual reproduction occur in the animal kingdom
1. Both asexual and sexual reproduction occur in the animal kingdom Asexual reproduction involves the formation of individuals whose genes all come from one parent. There is no fusion of sperm and egg.
More informationChapter 36 Active Reading Guide Reproduction and Development
Name: AP Biology Mr. Croft Chapter 36 Active Reading Guide Reproduction and Development Section 1 1. Distinguish between sexual reproduction and asexual reproduction. 2. Which form of reproduction: a.
More informationExamining Breeding Soundness of Beef Bulls
Examining Breeding Soundness of Beef Bulls A herd bull that will serve a higher percentage of cows during a limited breeding season is essential to a successful cow-calf operation. In many of these operations,
More information2 - male hormones/ female system
2 - male hormones/ female system May 7, 2012 5:08 PM I) Testosterone: main androgen (male sex hormone) A) Intro to Testosterone: -steroid hormone produced by interstitial cells in testes -produced in response
More informationReproduction Worksheet
Name: Date: Reproduction Worksheet Directions: Base your answers to questions 1-4 on the diagram below and your knowledge of biology. 1. Identify the structure in which sperm is produced. What is the name
More informationCollege of Agriculture. Animal Sciences
101 DOMESTIC ANIMAL BIOLOGY. (3) The first in a sequence of two courses providing an introduction to the subject of animal science. Emphasis is placed on a fundamental understanding of anatomy, physiology,
More informationFemale Reproductive System. Lesson 10
Female Reproductive System Lesson 10 Learning Goals 1. What are the five hormones involved in the female reproductive system? 2. Understand the four phases of the menstrual cycle. Human Reproductive System
More informationANOTHER LOOK AT TIMING OF A I
ANOTHER LOOK AT TIMING OF A I Ray L. Nebe l Department of Dairy Scienc e Virginia Polytechnic Institute and State Universit y Blacksburg, Virgini a Adoption by dairy producers of Al has made it one of
More informationTiming of A.I. Swine AI 9/6/12
Breeding Herd Education Series 20 Timely, relevant & convenient learning Thank you for participating in SowBridge 20. To start this presentation, advance one slide by pressing enter or the down or right
More informationIncreasing Profits per Acre with Appropriate Genetics
Increasing Profits per Acre with Appropriate Genetics Steven Lukefahr Lukefahr Ranch Kingsville, Texas Star cattle A composite of Red Angus, Senepol, and Tuli breeds Part II Characterizing the Composite:
More information6.7 IN. Continuity through Reproduction. What are the differences between male and female gametes? Discuss their formation and physical attributes.
6.7 IN What are the differences between male and female gametes? Discuss their formation and physical attributes. Males - 4 sperm per parent cell; Females - 1 ovum per parent cell Sperm - motile (tail);
More information9.4 Regulating the Reproductive System
9.4 Regulating the Reproductive System The Reproductive System to unite a single reproductive cell from a female with a single reproductive cell from a male Both male and female reproductive systems include
More informationBeef Cattle Handbook
Beef Cattle Handbook BCH-1400 Product of Extension Beef Cattle Resource Committee The Genetic Principles of Crossbreeding David S. Buchanan, Oklahoma State University Sally L. Northcutt, Oklahoma State
More informationInbreeding: Its Meaning, Uses and Effects on Farm Animals
1 of 10 11/13/2009 4:33 PM University of Missouri Extension G2911, Reviewed October 1993 Inbreeding: Its Meaning, Uses and Effects on Farm Animals Dale Vogt, Helen A. Swartz and John Massey Department
More informationSENIOR CERTIFICATE EXAMINATIONS
SENIOR CERTIFICATE EXAMINATIONS AGRICULTURAL SCIENCES P1 JUNE 2017 MARKING GUIDELINES MARKS: 150 These marking guidelines consist of 10 pages. Agricultural Sciences/P1 2 DBE/2017 SECTION A QUESTION 1 1.1
More informationWhy Reproduce? In order to ensure the continuation of the species and the continuation of life in general by producing offspring
HUMAN REPRODUCTION Why Reproduce? In order to ensure the continuation of the species and the continuation of life in general by producing offspring Asexual vs Sexual Reproduction Remember: Asexual reproduction:
More informationBenefits of OPU/IVF (IVP) in Dairy Cattle. M.V. Ramon Tosta Duarte Deforest WI - Reproduction Supervisor ST-Genetics
Benefits of OPU/IVF (IVP) in Dairy Cattle M.V. Ramon Tosta Duarte Deforest WI - Reproduction Supervisor ST-Genetics What is OPU/IVF (IVP)? ARTs used at ST Genetics Donor Selection Donors Animal Welfare
More informationUnit 6 REPRODUCTIVE SYSTEM Reproductive System Test Bank
Unit 6 REPRODUCTIVE SYSTEM Reproductive System Test Bank Objective 6.01 Describe the basic functions of the reproductive system. 1. Which of the following is a function of the reproductive system? a. Production
More informationFemale Reproduction. Ova- Female reproduction cells stored in the ovaries
Reproduction Puberty stage of growth and development where males and females become capable of producing offspring. Time of physical and emotional changes. Female *occurs between ages 8 -- 15 *estrogen
More informationMale Reproduction Organs. 1. Testes 2. Epididymis 3. Vas deferens 4. Urethra 5. Penis 6. Prostate 7. Seminal vesicles 8. Bulbourethral glands
Outline Terminology Human Reproduction Biol 105 Lecture Packet 21 Chapter 17 I. Male Reproduction A. Reproductive organs B. Sperm development II. Female Reproduction A. Reproductive organs B. Egg development
More informationThe use of laser to improve semen quality and reproduction performance of sows. Dr. Ivan Sheyko, Bielorussia ; ;
use of laser to improve semen quality and reproduction performance of sows. Dr. Ivan Sheyko, Bielorussia ; ; In Belarus pig breeding is based on commercial technologies providing for artificial insemination.
More informationTopic 18- Human Reproductive System. Day 2-Female (and review of) Male Reproductive Systems
Topic 18- Human Reproductive System Day 2-Female (and review of) Male Reproductive Systems Bell Ringer (5 minutes) Bioblitz WHAT ARE WE LEARNING TODAY? Date: 12/14-12/15 Topic: Human Reproductive System
More informationo Production of genetically identical offspring from one parent o E.g. - Bacteria Reproduce by binary fission a cell to divide into 2
Reproduction (IGCSE Biology Syllabus 2016-2018) Asexual Reproduction o Production of genetically identical offspring from one parent o E.g. - Bacteria Reproduce by binary fission a cell to divide into
More informationGROWING UP AND LIKING IT 2-Hour Assembly/Health Lesson Science-To-Go! Program Grades: 5-6. Growing Up and Liking It: Pondering Puberty
TEACHER GUIDE GROWING UP AND LIKING IT 2-Hour Assembly/Health Lesson Science-To-Go! Program Grades: 5-6 Growing Up and Liking It: Pondering Puberty Description Hour 1: Learn the science inside a changing
More informationUtah State Jr. Livestock Show Knowledge Test 2017 Senior. Name: County: Score:
Utah State Jr. Livestock Show Knowledge Test 2017 Senior Name: County: Score: True or False - Please circle the correct answer: 1. True or False: High birth weight in calves is always good. -BF 6 2. True
More informationInfluence of Age, Body Weight and Body Condition on Plasma Leptin Concentrations in Beef Cattle Findings Introduction Materials and Methods
Influence of Age, Body Weight and Body Condition on Plasma Leptin Concentrations in Beef Cattle G.T. Gentry, Reproductive Biology Center, J.A. Roberts, L.R. Gentry and R.A. Godke, School of Animal Sciences
More informationFertility in Beef Cattle
406-874-8215 tom.geary@ars.usda.gov Fertility in Beef Cattle Tom Geary Reproductive Physiologist Pregnancy Diagnosis Cow Fertility Breeding Season Vibrio Trich Stress Bull Fertility BVD Plant / Water Toxins
More informationLevel I - Lesson 8: Know Your Body
Level I - Lesson 8: Synopsis: This computer session will allow students to learn more about the human reproductive system and the changes their body will go through during puberty. Objectives: Students
More informationHomeorhesis is orchestrated changes in metabolism of body tissue required to sustain a specific physiological status.
Interaction Between Nutrition and Reproduction in Dairy Cows Amin Ahmadzadeh Animal and Veterinary Science Department University of Idaho Homeorhesis is orchestrated changes in metabolism of body tissue
More informationEQUINE INTRACYTOPLASMIC SPERM INJECTION PROGRAM
COLLEGE OF VETERINARY MEDICINE & BIOMEDICAL SCIENCES Department of Large Animal Clinical Sciences 4475 TAMU EQUINE INTRACYTOPLASMIC SPERM INJECTION PROGRAM Section of Theriogenology Veterinary Medical
More informationSTRUCTURE AND FUNCTION OF THE FEMALE REPRODUCTIVE SYSTEM
Unit 7B STRUCTURE AND FUNCTION OF THE FEMALE REPRODUCTIVE SYSTEM LEARNING OBJECTIVES 1. Learn the structures of the female reproductive tract. 2. Learn the functions of the female reproductive tract. 3.
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following hormones controls the release of anterior pituitary gonadotropins? A) LH
More informationGrowth and Development 6 th Grade
Growth and Development 6 th Grade All living things reproduce. Our bodies change during puberty to make reproduction possible. This is not always fun But it is pretty amazing! PUBERTY is the process of
More informationFree access minerals
Free access minerals At W.E. Jameson we supply a full range of minerals & vitamin supplements for feeding to cattle and sheep. Some are suitable for only feeding to cattle and some can be used for both.
More informationAnS 214 SI Multiple Choice Set 4 Weeks 10/14-10/23
AnS 214 SI Multiple Choice Set 4 Weeks 10/14-10/23 The following multiple choice questions pertain to material covered in the last two weeks' lecture sets. Answering the following questions will aid your
More informationRobert E. Taylor Memorial Symposium Applied Reproductive Strategies in Beef Cattle Fort Collins, CO December 2-3, 2
Robert E. Taylor Memorial Symposium Applied Reproductive Strategies in Beef Cattle Fort Collins, CO December 2-3, 2 2008 Natural Service Mating with Bulls - - Management Considerations - - Roger W. Ellis
More informationGrade 6 Reproduction Review
Grade 6 Reproduction Review Learner Outcomes W-6.3 Identify and describe the stages and factors that can affect human development from conception through birth How To Use This lesson plan is a review of
More informationFemale and Male Reproductive Systems
Female and Male Reproductive Systems Reproductive System: Organs that make possible the production of offspring. Female Reproductive System: Produces the female sex hormones Provides female reproductive
More informationThe Reproductive System
C h a p t e r 27 The Reproductive System PowerPoint Lecture Slides prepared by Jason LaPres North Harris College Houston, Texas Copyright 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
More informationThe Why s, What s, and How s of Timed Artificial Insemination Programs
Kansas Agricultural Experiment Station Research Reports Volume 1 Issue 8 Dairy Research Article 5 January 2015 The Why s, What s, and How s of Timed Artificial Insemination Programs J. Stevenson Kansas
More informationGONADOTROPHIN (LUTEINISING)- RELEASING HORMONE AND ANALOGUES (GnRH OR LHRH)
GONADOTROPHIN (LUTEINISING)- RELEASING HORMONE AND ANALOGUES (GnRH OR LHRH) Naturally occurring hormone, produced by the hypothalamus and transferred to the anterior pituitary gland in the hypophyseal
More informationBull Genetics: Purebreds, Composites, Full-sibs and Half-sibs
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Range Beef Cow Symposium Animal Science Department 12-9-1997 Bull Genetics: Purebreds, Composites, Full-sibs and Half-sibs
More informationExport Sales of U.S. Beef Semen Increased Faster than Domestic Semen Sales
Export Sales of U.S. Beef Semen Increased Faster than Domestic Semen Sales S.K. Johnson and K.C. Dhuyvetter Introduction The use of artificial insemination (AI) in the dairy industry grew tremendously
More informationChapter 14 Reproduction Review Assignment
Date: Mark: _/45 Chapter 14 Reproduction Review Assignment Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Use the diagram above to answer the next question.
More informationBody Wise. Living, Growing, Learning Boys Only
Body Wise Living, Growing, Learning Boys Only So what have we learned so far? Remember the rules This may be embarrassing and cause you to laugh but compose yourself quickly Female Reproductive System
More informationThe Diploma in Ruminant Nutrition
Further Information on the Modules that Make Up The Diploma in Ruminant Nutrition Taken from the Module Descriptors Ruminant Animal Production and the Feed Industry A4057 Academic Level 4 Rationale and
More informationTestes (male gonads) -Produce sperm -Produce sex hormones -Found in a sac called the scrotum -Suspended outside of the body cavity for temperature
REPRODUCTION Testes (male gonads) -Produce sperm -Produce sex hormones -Found in a sac called the scrotum -Suspended outside of the body cavity for temperature reduction -Testes wall made of fibrous connective
More information