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Class Notes for Equine at University of Guelph

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EQN 3060 Lecture Notes - Lecture 17: Major Trauma, Gas Exchange, Foal

Placentation Chapter 7 Placenta types: according to attachment site Discoid Zonary Diffuse (Horse) site of attachment between the placenta and the mare is almost over the entire developing fetus Cotyledonary (Cow) Placenta...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 21: Vaginal Discharge, Galactorrhea, Human Chorionic Gonadotropin

PostPartum Chapter 911 Neonate = first 4 days Physiological changes o Lungs (must start breathing oxygen if born too early this is an issue) o Body temperature (must accommodate to the weather outside) o Heart, cardiovascu...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 23: Low Birth Weight, Congenital Heart Defect, Cleft Lip And Cleft Palate

Foal Problems Chapter 15 Entropion Eyelids are curved inwards Eyelashes cause irritation to the cornea No effect on vision if corrected right away Foal Rejection Rejection of suckling Maternal aggression o Difficult to dea...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 16: Foal, Filly, Gonadotropin

Endocrinology of Pregnancy Chapter 7 Length of gestation 335342 days (average 340 days) Affected by: o Environmental stress o Seasonal effects Mares bred in the winter, they generally gestate 510 days longer in comparison ...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 15: Genital Tubercle, Filly, Uterine Horns

Pregnancy Detection Chapter 7 Nonreturn to estrus o Tease the mare to determine whether she is coming into heat again Rectal palpation o Day 1821 Increased tone, tubularity Indent between uterine horns Cervix elongated, fi...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 24: Cryptorchidism, Streptococcus, Blood Test

Reproductive Problems in the Stallion Chapter 16 Fertility Problems Mares account for 50 of the pregnancy variation o Mare husbandry management 17 o Mare herself 33 Stallions account for 50 of the pregnancy variation o Sta...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 20: Udder, Surcingle, Vaginal Discharge

Parturition Chapter 9 Length of gestation o 340 days on average o Earlier than 300 foal does not survive o 320 days, considered premature o Up to 390 days not unusual o Length affected by: Stress Nutrition Sex of fetus (co...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 13: Pregnancy Rate, Pipette, Glycerol

Semen Preservation Chapter 14 Two types of preservation: 1) liquid storage 2) cryopreservation 1) Liquid preservation Collect and evaluate semen o Viability, motility, morphology (70 reduces to approximately 60 after free...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 22: Pus, Hyperplasia, Pyometra

Reproductive Problems in the Mare Chapters 6, 8 When is a mare a problem breeder? After 3 attempts to breed her and she does not take Causes? Scarring on her uterus? Toxicity MRLS (Mare Reproductive Loss Syndrome) in Kentu...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 18: American Quarter Horse Association, Oviduct, Standardbred

Assisted Reproductive Techniques (ART) Chapter 17 ET embryo transfer Cryopreservation of oocytes or embryos IVF in vitro fertilization ICSI intracytoplasmic sperm injection GIFT gamete interfallopian tube transfer Cloning ...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 8: Granulosa Cell, Corpus Luteum, Luteolysis

Endocrine Regulation in the Mare Chapter 2 Hormones regulate activity of target cells effective at low doses 2 types: o Protein o Steroid Hormone cascade Hypothalamus (GnRH) anterior pituitary (FSH, LH) posterior pitui...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 11: Controlled Ovarian Hyperstimulation, Prostaglandin, Abdominal Pain

Controlled Breeding Chapter 3 Why control breeding? Timing of breeding Schedule of inseminations Manage maresfacility Synchronization (batch breeding, ET) Estrus cycle management Methods: 1. Induction of ovulation duri...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 12: Shipping Container, Pipette, Ovulation

Artificial Insemination Chapter 12 Why use AI? Timing of breeding o Breed according to mares cycle Schedules of inseminations Manage stallionsmaresfacility o Spilt stallions ejaculate, reducing how many time he needs to...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 9: Egg Cell, Genetic Predisposition, Oocyte

Estrous Cycle Chapter 2 Seasonally polyestrous o Undergo multiple estrous cycles Estrous cycle = period form one ovulation to the next Follicular phase: estrus = in heat lasts 314 days (irregular period) Luteal phase: ...

Equine
EQN 3060
Dr. Merkies
EQN 3060 Lecture Notes - Lecture 10: Xylazine, Artificial Insemination, Artificial Vagina

Reproductive Behaviour Chp 2: p12 16, Chp 12: p165 167, Chp 3 Mare behaviour (typical but may not hold true to all mares) In heat: o Docile o Winking o Tail raising o Squatting o Urinating o Receptivity Out of heat: o H...

Equine
EQN 3060
Dr. Merkies

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