Pregnancy Flashcards
Pregnancy Diagnosis (4 ways)
Palpation
Ultrasonography
Radiology
Relaxin hormone testing
Palpation
Can be inconclusive
25 to 40 days after conception; gentle abdominal palpation of chorionic vesicles
40 days to term; general caudal abdominal distention but no distinct puppy bumps (cohesive enlargement)
50 days to term (late gestation) may actually palpate individual fetuses
Ultrasonography
Best to perform after day 25
Assess fetal viability by heart beat after day 25
Can be used to monitor problem pregnancy and embryonic fetal loss
Radiography
Requires skeletal mineralization
Day 45 to term
Radiographs
Order of puppy mineralization day 45
Mineralization of skull
Radiographs
Order of puppy mineralization day 48
Scapula
Humerus
Femur
Radiographs
Order of puppy mineralization day 52
Spinal column
Radius
Ulna
Tibia
Radiographs
Order of puppy mineralization day 54
Pelvis
Ribs
Radiographs
Order of puppy mineralization day 61
Coccygeal vertebrae Fibula Calcaneus Distal extremities Teeth
Hormones important during pregnancy
Progesterone Estrogen Relaxin Prolactin Growth Hormone
Progesterone during pregnancy
Elevated for duration of gestation
Maintains endometrial integrity
Attachment of placenta
Suppresses uterine contraction
Estrogen during pregnacy
Rises 10 to 15 days after LH surge
Supports progesterone secretion and progesterone receptors
Relaxin during pregnancy
Produced by placenta (by day 21-30)
Prolactin during pregnancy
Supports CL function
Growth Hormone during pregnancy
Increase leads to insulin resistance
Helps with mammary development
CBC/Chem Changes During Pregnancy
Normocytic, normochromic anemia
Mild neutrophilia Hypercholesterolemia Decreased TP Decreased BUN and Creatinine Insulin resistance Decreased serum Calcium
Weight
Conception greatest for females with BCS below ideal weight
Overweight females have increased problems during pregnancy and higher chance of dystocia
Nutrition Demand
Greatest during last 3 weeks of gestation and during lactation
Nutrition: What to feed
NRC and AAFCO approved diet formulated for all life stages
Carbohydrates, protein, fat at proper proportion
Vitamins, minerals, aa
Do NOT provide extra calcium supplementation during pregnancy; can/will cause Hypocalcemia (dogs do not draw Ca from diet but from Ca stores)
Nutrition: How much to feed
Feed the same as done prior to pregnancy and increase only at 3 weeks prior to whelping (when energy demand increases significantly)
Increase fed gradually over 7, 8, and 9 weeks to 50% pre-breeding intake
Lactation: increase fed up to 3 times the pre-breeding by third week of lactation