Animal/Dairy Science 434 - PowerPoint PPT Presentation

Loading...

PPT – Animal/Dairy Science 434 PowerPoint presentation | free to download - id: 570d43-ZmYxM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Animal/Dairy Science 434

Description:

Title: Bull Reproductive Tract Author: John Parrish Last modified by: John Parrish Created Date: 9/4/2013 3:20:19 PM Document presentation format – PowerPoint PPT presentation

Number of Views:257
Avg rating:3.0/5.0
Slides: 40
Provided by: JohnPa54
Category:
Tags: animal | dairy | duplex | science

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Animal/Dairy Science 434


1
Animal/Dairy Science 434
  • Female comparative anatomy
  • History of Reproductive Physiology

2
Ovarian Differences
Mare
Cow
Sow
3
Cow
Sow
Cow, Sow, Ewe, Human
  • Cortex on outside
  • Ovulation can occur on any point of the ovary

Blood vessels and connective tissue in medulla
Preovulatory Tertiary Follicle
  • Inversion of the cortex and medulla.
  • Ovulation occurs at the Ovulation Fossa

Internal CL
4
Mare
Cow
5
Uterine and Cervical Differences
Cow
Mare
Sow
6
Duplex
Rabbit, Mouse
Oposum
2 Uterine Horns
2 Cervixes
2 Vaginas
1 Vagina
7
Bicornuate
Cow
Sow
Ewe
Smaller uterine horns
Large uterine horns
1 Vagina 1 Cervix 1 Uterine Body 2 Uterine Horns
8
Bicornuate
Mare
1 Vagina 1 Cervix 1 Uterine Body 2 Uterine Horns
Large uterine body Smaller uterine horns
9
Bicornuate
Bitch (Canine)
Queen (Feline)
1 Vagina 1 Cervix 1 Uterine Body 2 Uterine Horns
Small uterine body Long uterine horns
10
Simplex
Woman
Large uterine body No uterine horns
1 Vagina 1 Cervix 1 Uterine Body
11
Human Tract
12
Human Tract
13
A 47-year old woman underwent a hysterectomy for
excessively heavy menses. She had previously had
four normal deliveries. This structure was
removed, what is wrong?
14
COW
Uterine Body
  • Cervix is composed of thick connective tissue
  • Mucus is secreted near the time of breeding and
    ovulation.

Cervix
Cow has 4-5 annular rings
Vagina
15
Mare
Sow
Uterine Body
Uterine Body
Longitudinal Folds
No obstacles
Interdigitating pads
No fornix vagina
Fornix Vagina
Vagina
Vagina
16
Cervix
COW
Internal Os
Cervical Ring
Cervical Ring
Fornix
Fornix
External Os
Fornix
EWE
Anterior Vagina
Anterior Vagina
17
Cervix
Cervical Folds
FV
IP
Sow
Mare
18
External Genitalia
Sow
Mare
Cow
Ewe
19
(No Transcript)
20
Human Tract
21
External Genitalia
22
Vagina
Anterior Vagina
Cervix
Vulva-Vaginal Sphincter (Hymen)
Stratified Squamous Epithelium
Columnar Epithelium
Urethra
Submucosa
Submucosa
23
Avian Female Anatomy
Infundibulum
Ovary
Oviduct
Uterus
Intestine
24 hrs 50K cells
vagina
Right Oviduct
cloaca
Left side of Reproductive Tract Develops!!
24
Chicken Tract
Ovary
Magnum
Intestine
Shell Gland
25
Chicken Ovary
Hierarchal Follicles
26
Ovary with large follicles removed
Ruptured follicle
27
Chicken Reproductive Tract
Isthmus
Infundibulum
Magnum
Shell Gland
Cloaca
Follicles
28
Infundibulum
29
Cloaca
Vagina
Vaginal opening
Intestine opening
30
Cloaca of Chicken
Intestine opening
Vagina opening
31
Historical Development of Reproductive Physiology
Aristotle 384-322 BC
  • Fetus arises from menstrual blood
  • Seminal plasma initiates the conversion of
    menstrual blood
  • Semen from all parts of body

32
The Age of Gross Anatomy
  • Fallopius (1562)
  • Describes the oviduct
  • Coiter (1573)
  • Describes the corpus luteum
  • Regnier de Graff (1672)
  • Describes the antral follicle (Graafian Follicle)

33
Development of the Microscope
  • van Leewenhoek (1677)
  • Describes spermatozoa in semen

34
What is the role of spermatozoa?
  • Spallanzani (1780)
  • Sperm were the fertilizing agent in semen
  • Successful artificial insemination of a dog
  • Dumas (1825)
  • Proves sperm the fertilizing agent

35
Modern Reprod. Physiology
  • Gonads produce steroid hormones
  • Regulation of estrous cycles in females
  • Radioimmunoassay (RIA)
  • Artificial Insemination
  • Cryopreservation
  • Prostaglandin used to control estrous cycles
  • Biotechnology

36
Approach to Applications
  • Develop basic knowledge of how system works
  • Investigate methods that can perturb the system
  • Manipulate the system to improve reproduction
  • Estrus Synchronization

37
Enhancing Reproduction
  • Small improvements have profound effects on
    production
  • 3 improvement in birth rate results in an
    additional
  • 1 million beef calves/year
  • 3.2 million pigs/year
  • 3.7 million gallons of milk/year

38
Current Trends
Metabolic and Physiologic Changes
Production
Reproduction
  • Continuing need to
  • improve reproductive performance
  • understand how to apply new technology
  • Ovsynch
  • Clonning


39
Limiting Reproduction
Pets
Insects
Humans
Wildlife
About PowerShow.com