14
Ohio 4H Horse Program www.horse.osu.edu Equine Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4H Horse Program www.horse.osu.edu

2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Embed Size (px)

Citation preview

Page 1: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Equine ReproductionDr. Kimberly ColeFebruary 25, 2017

Ohio 4‐H Horse Program www.horse.osu.edu

Page 2: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Overview

• Responsible Horse Breeding• Reproductive Anatomy & Physiology of the Mare• Estrus Detection & Estrous Cycle Manipulation

• Artificial Insemination & Advanced Reproductive Techniques• Broodmare Management• The Foaling Process• Anatomy & Physiology of the Stallion

Page 3: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Responsible Horse Breeding

• Consider alternatives• Adopt from a non‐profit organization• Purchasing a horse that meets your specifications

• Calculate and compare costs• Breeding costs (stud fees, veterinary expenses, mare care, etc.)• Insurance• Yearly maintenance costs (foal to 3 yrs)

• Feed, housing, farrier, veterinary, etc.• Careful evaluation of the mare and stallion

• Conformation and temperament• Genetic testing

Page 4: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Options for Breeding Your Mare

• Live Cover

• Artificial Insemination

• Embryo Transfer

Page 5: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Gestation Length Average: 340 daysRange: 320‐355 days

Page 6: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Broodmare Management

• Vaccinations• Annual core vaccines

• WEE/EEE/WNV/Tetanus/Rabies• Recommended risk‐based vaccines• EHV at 5,7, & 9 months of gestation• Pre‐foaling vaccines at 300d of gestation

• Deworming• Nutrition

• Increased nutrient requirements in                                  late gestation

Page 7: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Caution When Feeding Fescue

• Concern for late gestation mares• Causes decrease in prolactin, estrogen and progesterone

• Prolonged gestation• Thickened placenta• Dystocia• Agalactia• Weak/dead foals• Retained placenta• Decreased conception

Page 8: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

3 Stages of Parturition (Foaling)

• Stage 1: Preparation

• Stage 2: Birth of the Foal

• Stage 3: Passage of the Placenta

Page 9: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Stage 1: Preparation

• Possible changes in behavior• Uterine contractions• Dilation of the cervix• Rotation of foal into normal delivery position

Page 10: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Stage 2: Birth of the Foal

Begins with rupture of the chorioallantoic membranes, commonly known as “breaking of the water”.

Page 11: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Red Bag Delivery

• Premature placental detachment• Red & velvety appearance• Membranes do not break• Lack of oxygen to foal

Page 12: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Stage 3: Passage of the Placenta

• Usually expelled within 1 hour• Considered ‘retained’ if not expelled 

within 3 hours (Call the vet!)• Uterine contractions• Examine for holes, color & weight

Page 13: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

The 1st 24 hours are crucial!

Page 14: 2017 4H Clinic - Repro Updates Reproduction Dr. Kimberly Cole February 25, 2017 Ohio 4 ... • Artificial Insemination & Advanced Reproductive Techniques

Ohio 4‐H Horse Program www.horse.osu.edu

Ohio 4‐H Horse Program www.horse.osu.edu

The fun is just beginning!