2021 - final Flashcards
How could be evidenced the completed ovulation in the dog?
- with LH concentration measurement
- female accepts approach of males
- measurement of oestrogen concentration
- measurement of progesterone concentration
- between day 9-13 after onset of heat
- measurement of progesterone concentration
What is characteristic of the reproductive cycle in dogs?
- Seasonally polyesters
- Polyestrus
- Seasonally monoestrus
- Aseasonal monoestrus, spontaneous ovulation
- Aseasonal monoestrus, spontaneous ovulation
What do endometrial cups produce?
- hCG
- PMSG
- PGF2⍺
- Progesterone
- PMSG
These cups produce equine chorionic gonadotropin (eCG), also known as pregnant mare’s serum gonadotropin (PMSG)
Which statement is correct? Clinical signs of proestrus in dogs are induced by..
- increase of progesterone concentration
- increase of oestrogen concentration
- LH peak
- increase of prolactin concentration
- increase of oestrogen concentration
What is NOT characteristic of a cat’s reproductive cycle? (Mark the incorrect statement)
- it is characteristic by seasonal polyestrus
- it is characterised by induce ovulation
- spontaneous ovulation does not occur
- the cycle can be interrupted by summer heat or stress
- spontaneous ovulation does not occur
Length of oestrus and expected time of ovulation in the mare?
- 12-24 hrs, between 24-26 hrs
- 24-36 hrs, between 30-34 hrs
- 36-48 hrs, between 42-46 hrs
- approx. 7 days, one day before the end of oestrus
- approx. 7 days, one day before the end of oestrus
Duration of oestrus: 5-7 days (can be as short as 2 days, and as long as 11 days)
In how many fractions does the dog ejaculate the semen?
1
2
3
4
3
What is the tight junction?
- Blood-testis barrier to protect the developing spermatozoa
- Connection between testis and epididymis
- Connection between epididymis and ductus defferens
4 Attachment point of the tail of the spermatozoa
- Blood-testis barrier to protect the developing spermatozoa
A freemartin is…
- an overweight bull born to a heifer co-twin
- a hermaphrodite cow
- a sterile heifer born a a co-twin of a bull
- a pseudohermaphrodite calf
- a sterile heifer born a a co-twin of a bull
High-yielding dairy cows have…
- Too much progesterone
- Too much fat at caudal area
- Too much estrogen
- Negative energy balance after calving
- Negative energy balance after calving
Length of the oestrus in pigs
- 24hrs
- 2-3 days
- 4 days
- 7 days
- 2-3 days
What is the most important accessory male organ in the male dog?
- Vesicular gland
- Bulbus glandis
- Cowper’s gland
- Prostate
- Ampulla
- Prostate
What does the embryo need for the maternal recognition in the mare?
- Hatching
- Intrauterine migration
- Formation of endometrial cups
- Placentation
- Intrauterine migration
What is the “back pressure test”?
- During oestrus, the sow stand still, if we apply pressure on its back
- During pregnancy, the sow stands still, if we apply pressure on its back. This is a method for early pregnancy detection.
- If we turn a newborn piglet on its back, it will turn to sternal position quickly. We can judge their vitality with this method.
- If we apply pressure on the back of a healthy pig while it’s laying down, it will stand up. This way, we can select the sick ones.
- During oestrus, the sow stand still, if we apply pressure on its back
Maternal recognition of pregnancy in cow is driven by…
- Embryonic mobility phase
- Estrogens
- B-INF-tau
- Caprine-INF-tau
- B-INF-tau
How long is the oestrus cycle in the goat?
- 20-21 days
- 16-17 days
- 27-28 days
- 9-10 days
- 20-21 days
What does flushing mean?
- Increased vitamin intake
- Increased protein intake
- Increased energy and protein intake
- Increased Ca intake
- Increased energy and protein intake
During a normal oestrus in the mare, we see..
- there are no behavioural oestrus signs
- uterine oedema before ovulation
- 2-3cm fluid in the uterine lumen
- more dominant follicles and active corpora luteal
- uterine oedema before ovulation
The follicular phase consists of..
- diestrus + metestrus
- proestrus + estrus
- metestrus + estrus
- oestrus + diestrus
- proestrus + estrus
What is the average volume of the bull ejaculation?
- 6ml
- 1ml
- 20ml
- 50ml
- 6ml
What is the ideal time frame for early fetal sexing in the mare?
- Days 55-70
- Days 15-25
- Days 100-120
- Days 200 onward
- Days 55-70
Where is the semen deposited/put in the cow at the insemination?
- Vagina
- Cervix
- Body of the uterus
- Into the oviduct
- Body of the uterus
Which accessory sex glands can be found in the stallion?
- Ampullae, glandula vesicularis, prostate
- Ampullae, glandula vesicularis, prostate, glandula bulbourethralis
- Only the prostate gland
- Ampullae, prostate and glandula bulbourethralis
- Ampullae, glandula vesicularis, prostate, glandula bulbourethralis
What can be a consequence of spaying a dog in diestrus?
- Nothing
- Pyometra
- Pregnancy
- overt Pseudopregnancy
- Obesity
- overt Pseudopregnancy
Which inseminaton technique is not used in the ewe?
- Vaginal
- Cervical
- Intrauterine
- Rectovaginal
- Rectovaginal
What is the temperature of the liquid nitrogen?
- minus 196°C
- minus 60°C
- minus 280°C
- minus 20°C
- minus 196°C
What treatment do you use in cats with hyperplastic fibroadenoma complex/hyperplastic fibroadenomatosis?
- Aglepristone
- Deslorelin
- Progesterone
- Cabergolin
- Aglepristone
What is indicated by the less opaque appearance of the collected semen?
- Low concentration of the semen/spermatozoa
- Low motility of the spermatozoa
- Low viability of spermatozoa
- High number of spermatozoa with abnormal morphology
- Low concentration of the semen/spermatozoa
What is the target cell of the FSH in the testis?
- Sertoli-cell
- Leydig-cell
- Spermatid
- Spermatogonia
- Sertoli-cell
The high magnification is used to evaluate the..
- Massmovement of the spermatozoa
- Progressive movement of the spermatozoa
- Individual movement of the spermatozoa
- Ratio of local motile spermatozoa
- Individual movement of the spermatozoa
What is the volume of the 2nd part/phase of the dog ejaculate?
- 1-6ml
- 20-30ml
- 40-50ml
- 10-20ml
- 1-6ml
What is the response of the live spermatozoa in the hypo-osmotic swelling test?
- Shrinkage of the head
- Shrinkage of the tail
- Swelling of the head
- Swelling of the tail
- Swelling of the tail
What the peroxidase-test is used for?
- Morphology test
- Motility test
- To detect with blood cells (WBC)
- To detect red blood cells (RBC
- To detect with blood cells (WBC)
How long is the bovine estrous cycle on average?
- 21 days
- 26 days
- 17 days
- 6 months
- 21 days
Where can be found the GnRH surge centre in the males?
- Males do no have GnRH surge centre
- In the hypothalamus
- In the Hypophysis
- In the testis
- Males do no have GnRH surge centre
*How could you explain the decrease of body temperature prior to parturition in dogs?
- Estrogen increase provokes the thermoregulatory centre of CNS
- Prolactin peak provokes the thermoregulatory centre of CNS
3.increased progesterone provokes the thermoregulatory centre of CNS during the pregnancy
- Uterine contractions need more metabolic energy
3.Increased progesterone provokes the thermoregulatory centre of CNS during the pregnancy
Mark the correct statement about the pyometra.
- Hormonally mediated proestrual disorder
- Obligatory prerequisite for the onset of the disease is hyperplasia and degeneration of the uterine wall
- The most important predisposing factor is the cumulative effect of estrogen
- Progesterone-induced changes of the endometrium facilitate adherence of E. coli
- Progesterone-induced changes of the endometrium facilitate adherence of E. coli
What kind of changes happen during slow cooling of native cells?
- Due to influx of water the cell volume increases
- Decrease of intracellular osmotic pressure
- Formation of extracellular ice crystals
- Due to water efflux the cell volume decreases and the intracellular osmotic pressure increases
- Due to water efflux the cell volume decreases and the intracellular osmotic pressure increases
What does the analytical sensitivity show?
- Precision of the assay
- Mean of the random errors
- Reproducibility of the assay
- Minimal detectable concentration
- Minimal detectable concentration
When and where should the recovered in vivo embryos be transferred in the Bovine?
- On day 4, into the vagina, near to the external os of the cervix
- On day 9, into the tip of the contralateral uterine horn
- On day 7, into the uterine body
- On dat 7, into the ipsilateral uterine horn
- On dat 7, into the ipsilateral uterine horn ???
Methods for evaluation of recovered embryos for freezing or fresh transfer: Choose the incorrect answer.
- Time lapse cinematography to assess the speed of cleavage
- Detection of metabolic products of developing embryos (metabolomics)
- Microscopic evaluation of the embryo morphology and developmental stage
- Visualisation of the female pronucleus by staining
- Time lapse cinematography to assess the speed of cleavage
Which spermatozoa is stained at the Viability-test (eosin)?
- Live
- Dead
- In which the membrane function is intact
- In which the acrosome reaction is already completed
- Dead
Working principle of fluorescent in situ hybridisation (fish)?
- Co-incubation of denatured (one stranded) DNA sample with fluorescein-labelled DNA probe
- High pressure liquid chromatography (HPLC) of the Y-specific DNA sequence
- Amplification of the Y-specific DNA sequence by PCR
- Different electric charge of X-bearing and Y-bearing spermatozoa
- Co-incubation of denatured (one stranded) DNA sample with fluorescein-labelled DNA probe?
Why are the calves created by Nucleus Transfer not true clones?
- Because the age of the nucleus donor animal may be years older than that of the recipient oocyte
- Because the mitochondrial DNA and epigenetic factors influence the genotype of the offspring
- Because true clones can be produced from superovuloated cows only
- Because fully identical calves can be generated only by transgenesis
- Because the mitochondrial DNA and epigenetic factors influence the genotype of the offspring
What does necrozoospermia mean?
- All spermatozoa are dead
- 50% of the spermatozoa are dead
- Low motility
- High number of spermatozoa with abnormal morphology
- 50% of the spermatozoa are dead
Mark the correct statement obesity following neutering..
- It is most likely to occur after prepubertal or early neutering
- It is most common in neutered individuals after sexual maturation
- It is mostly characterized by its formation in two years after neutering
- It can only be observed in male dogs
- It is mostly characterized by its formation in two years after neutering?
How is semen collected in the bull in AI stations for frozen semen production?
- With electroejaculation
- With artificial vagina
- With rectal massage
- With massage of ampullae
- With artificial vagina