Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

SA Therio > Overview of Canine Therio > Flashcards

Overview of Canine Therio Flashcards

(58 cards)

Start Studying
1
Q

Canine estrous cycle time period

A
  • They do not have seasonal variation

- Will occur year round

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Feline estrous cycle time period

A
  • Long day breeders

- They will go in and out of estrus during

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Breeding for profit

A
  • Most responsible breeders don’t make money
  • Value of a single puppy may be quite high, but net income is not great
  • Hard to make money from breeding just one litter
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Reproductive services

A
  • Contraception (surgical and non-surgical
  • Effects of age at time of surgical sterilization
  • Wellness care
  • Consultation on nutrition and husbandry
  • Consult for equipment and facilities
  • Consult for genetics
  • Breeding soundness exam
  • Breeding management ans assisted breeding
  • Compliance with government regulations
  • Preg termination
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Effect of GnRH

A
  • Stimulate LH and FSH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Effect of E2 on LH and FSH

A
  • Negative feedback for LH and FSH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What produces estrogen?

A
  • Follicle on an ovary
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Effect of Estrogen on GnRH

A
  • Positive feedback
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Estrous cycle

A
  • be able to draw the picture
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Season or seasons

A
  • Estrous cycle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Anestrus lay term

A

Between heats, not in season

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Proestrus lay term

A
  • Coming into heat, coming in, pre-standing heat
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Estrus lay term

A
  • In season, in heat, in, standing heat
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Diestrus lay term

A

Out of heat, out, going out of season

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What hormones are key during anestrus?

A
  • FSH (typically quite elevated)
  • GnRH (stimulates FSH and LH)
  • LH (going through phasic increases)
  • Control by hypothalamic pituitary ovary interactions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Anestrus duration

A

2-5 months with a wider range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What occurs during anestrus?

A

Time of uterine repair

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Anestrus in relation to luteal/follicular period

A
  • Starts at the end of luteal period
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Progesterone during anestrus

A

<1 ng/mL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

GnRH stimulation of LH and FSH during anestrus

A
  • From early to late anestrus, GnRH pulse frequency increases leading to production of both FSH and LH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

FSH role

A
  • key stimulator of follicular development
  • Increases LH receptors in granulosa cells in the ovary
  • LH then takes over for further follicle maturation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

When is FSH area under the curve greatest?

A
  • Late anestrus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What happens during proestrus?

A
  • Time of development and maturation of the follicle and oocyte
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Duration of proestrus

Study These Flashcards
A

9 days, but range from 3-14 days

25
External signs of proestrus (keeping in mind that they are quite variable)
- Swelling vulva - Serosanguinous vaginal discharge - vaginal mucosal thickening - Attraction of males
26
Progesterone during proesterus
- For majority of proestrus, will be <1 ng/mL | - Towards the end of proestrus, as you get to the LH surge, you will have an increase
27
What happens during estrus?
- Time of final oocyte maturation, ovulation, breeding receptivity, and conception - LH surge - Ovulation - Corpora lutea formation
28
Average duration of estrus?
9 days average - Ranges from 3-14 days
29
Observable characteristics of estrus (keeping in mind that it's quite variable)
- Decreasing vaginal discharge - reduced swelling and "softening" of vulva - Thickening edematous vaginal mucosa - Standing for breeding
30
What happens to progesterone during estrus?
- It increases (but doesn't peak until diestrus) and drives formation of a corpora lutea that will persist throughout diestrus regardless of whether the dog becomes pregnant or not
31
How many divisions has a canine oocyte undergone by time of ovulation?
- One meiotic division | - At this point it is a primary oocyte
32
How many divisions are required before fertilization can occur?
- Two | - Primary oocyte must divide once more
33
When do oocytes reach secondary state?
- 2 days after ovulation
34
When is the fertilization period for the dog?
- Two days after ovulation and lasts about 2 days | - CAN be longer due to delayed oocyte degeneration
35
Diestrus description
Luteal period occurring after every estrus
36
How long does diestrus last?
- 50 days on average, range 50-70 days
37
Progesterone during diestrus
- Functional corpora lutea produces progesterone - Unlike other species, bitch has serum progesterone levels during diestrus that will be quite similar regardless of whether she is pregnant or not
38
Pseudocyesis - is it a disorder?
- No | - It's normal
39
What is the pathogenesis of pseudocyesis?
- Decline in progesterone leads to clinical signs in diestrus (mid to late) - Mammary gland development - Galactorrhea - Abdominal distension - nesting behavior
40
What do pseudocyesis or elevated progesterone levels indicate?
- Indicates ovulation plus development then deterioration of a corpus luteum
41
Treatment of pseudocyesis
- None normally - Do not need to spay or treat with hormones - Unless there is galactorrhea, in which case you can use a prolactin inhibitor or decrease nutritional intake
42
Feline estrous cycle
- Seasonally polyestrus - Long day breeder - Will respond to manipulation of the photoperiod
43
When does ovulation occur in the feline?
- Ovulation induced by mating | - Act of breeding causes a release of luteinizing hormoen?
44
Where does progesterone come from during the feline estrous cycle?
- Corpus lutea and possibly the feto-placental unit
45
Superfecundation
- Offspring from more than one sire can occur
46
Superfetation
- Offspring of different gestation lengths has been reported but not definitely confirmed in the cat
47
Mating behavior in the queen
- Female calls out, rolls around and exhibits estrus behavior - 20 sec to few minutes for male positioning - 1-30 seconds for intromission and ejaculation - Female may strike out after copulation - She will allow copulation again to get stimulation for luteinizing hormone surge
48
What determines ovulations rate in the queen?
- Mating frequency and duration of estrogen elevation
49
Ovulation success after number of matings
60% after one mating Up to 100% after mating 3x per day for 5 days
50
External stimulation of ovulation in the queen
- Vaginal stimulation with a glass rod or cotton swab can stimulate mating and induce ovulation - hCG or GnRH have been used to induce ovulation
51
Female dog anatomy of the vagina
- Make sure that you can draw it out and know what you will reach first
52
Vaginal cytology use
- Indirect indicator of serum estrogen level | - Vaginal cytology can be thought of as a semi-quantitative estrogen assay
53
Vaginal mucosa cell thickness during diestrus and anestrus
- 4-5 layers thick | - Estrogen is low
54
Vaginal mucosa thickness during proestrus
- 15-20 cells during estrus | - Estrogen is higher
55
Late anestrus cytology
- Higher number of parabasal cells - Not many RBCs or WBCs (unless another disease process is going on) - Lower number of intermediate and superficial cells - vulva is thin (4-5 layers)
56
Proestrus cytology
- Parabasal cells start to dwindle - Higher # of intermediate cells - By the end, starts to be more superficial cells (cornified) - Vulva is getting thicker - Higher number of RBCs at the end
57
Estrus cytology
- Higher number of RBCs then dwindles - Low number of parabasal cells - Fewer intermediate cells and majority superficial (cornified) cells - vulva is thickened and then dwindles by the end
58
Diestrus cytology
- Higher number of WBCs - Fewer RBCs - Parabasal cells pick up - Fewer intermediate and superficial cells - Thicker vulva

SA Therio (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions