Progesterone Interpretation

• Test for brucellosis
• Day of actual bleeding
• Bitches will generally ovulate 2 days after the P4 value reaches 2.0
• Breeding should take place on days 2,3, 04 after estimated ovulation day
• The method of insemination may help to determine the best day to breed for example:

Natural or Fresh Semen:  Breed earlier in cycle (2^nd, 3^rd

                                           Day after ovulation)

Frozen Semen:  Breed later in cycle (4^th day after ovulation)

·        Anytime you have a value under 2.0 recommend retesting in 4 days.  This is to verify that the K9 did indeed pass 2.0 and progressed to ovulation/  Some females will remain below 2.0 for long periods of time before the LH peak

·        Ovulation can be predicted with greater accuracy anytime you have >1 value at your disposal.  Always predict ovulation based on that day’s value, then go back and compare that to predictions based on previous day’s values

·        If there is only one P4 value available, and it is high (ie >8), accurate prediction of ovulation is difficult.  If this is the case, the recommendation should be to breed as soon as possible, and repeat breeding until the bitch no longer stands.  Ultimately it should be advised to do vaginal cytology under these circumstances to determine if the bitch has already passed her fertile period.

·        The guidelines for breeding are based on the following facts:

è    Ovulation occurs 2 days after LH peak (P4=2.0)

è    Newly release ova require 1-2 days to mature after ovulation

è    After maturation, the ova have a viable life span of 72 hrs.

Value                                     Clinical Interpretation

< 1.7                                       Retest progesterone level in 4 days

1.7 – 1.8                                 LH peak should occur the next day

1.9  - 2.5                                 LH peak today, ovulation in 2 days

2.6 – 3.9                                 LH peak yesterday, ovulate next day

4.0 – 8.0                                 Ovulation today, breed 1^st in 2 days

8.1 – 10.0                               Ovulation yesterday ?  breed next day *

10.0 – 12.0                             Breed now & EOD until out of heat *

12.0 _ 14.0                             Breed now & EOD until out of heat *

* Difficult to predict day of ovulation if this is the only test value available.

·        Palpate between  21- 28 days

·        Xray  After Day  55

·        63 days from ovulation day for puppies are born

For Other Great Articles by Mary Lou click below:
Dietary Supplements - Omega 3 and Omega 6 Fatty Acids
The Canine Ear
Mast Cell Tumors
Serum Chemistry Profiles (What they tell us) Part 1
Serum Chemistry Profiles (What they tell us) Part 2
Dietary Supplement - A Few More To Consider
Bloat
Cushing's  Syndrome - The Disease
Cushing's  Syndrome - Common Drug Therapies
Cushing's  Syndrome - The Not So Common Drug Thearpies
Cushing's  Syndrome - The Alternative Treatments
Coprophagia The Scoop on POOP-eaters!
Tis the Season
The New Dog Flu
Lumps Bumps and Lipomas
Hypothyroidism
Homeopathic Healing Part 1
Homeopathic Healing Part 2
Homeopathic Healing Part 3
The Finicky Eater
Canine Vestibular Syndrome
Kennel Cough
Common Canine Medications

ARTICLES SUBMITTED BY - MARY SCHULTZ
Heart
Tick Borne Illness - not just Heartworm
Household Medications

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