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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Culls bulls earlier (2 reasons)
prostate gland
leydid or interstitial cells
Mares
2. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
Jersey Cow
reason for seasonal breeding periods
Where livelihood is in agriculture
3. Sperm production
cryptorchid
polyestrous
spermatogenesis
cow estrus cycle
4. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
mastitis
mare estrus cycle
organs used in spermatogenesis
castration
5. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
Dairy calves are removed from cow at birth to...
hormones
visual evaluation (BSE)
effects of BST
6. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
effects of BST
Reasons for gestation length being affected
visual evaluation (BSE)
mare estrus
7. What helps regulate spermatogenesis?
Size of cow in relation to the amount of milk produced
Lutinizing Hormone in females
cow ovulation
testosterone
8. 1-3 days
Jersey Cow
sow estrus
sow ovulation
penis sizes vs delivering methods
9. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Lutinizing Hormone in males
effects of estrogen
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
growth lost from castration methods (knife & band)
10. Sperm is produced here
seminiferous tubules
Hard
normal presentation of the fetus
ewe estrus
11. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
Where livelihood is in agriculture
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
penis proper
dairy cattle pregnancy check
12. Prevent the cow from getting an infection from the calve
visual evaluation (BSE)
Dairy calves are removed from cow at birth to...
estrous
accessory sex glands
13. Start of the reproductive tract for the female. located outside of the body
cow gestation
vulva
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Jersey Cow
14. 147 days
testis (gonads)
cervix
urethra
ewe gestation
15. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
scrotum
eminal vesicles
monestrous
spermatogenesis
16. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
cremaster muscle
Holstein Cow
Where livelihood is in agriculture
Sperm survival specs
17. Days which have decreasing daylight hours
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18. Scar tissue plugs up chambers of udder
sigmoid flexure
mastitis
monorchid
testosterone
19. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
purpose of Breeding Soundness Exam (BSE) for males
feeding a high producing dairy cow
pelvis
seasonally polyestrous
20. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
things to check for in a breeding soundness exam (BSE)
Follical Stimulating in males
mare's estrous cycle
Where livelihood is in agriculture
21. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
things to check for in a breeding soundness exam (BSE)
mare gestation
functions of progestrone
1. more cost effective - 2. powdered milk is in excess production
22. Look for infection - split - and rupture of the penis
eminal vesicles
oviducts
butterfat
penis and prepuce observation (BSE)
23. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
estrous
mare's estrous cycle
Dairy Cattle Lactation (standard)
why does the cow need fat deposits during pregnancy?
24. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
ewe estrus cycle
seminiferous tubules
prostate gland
testis (gonads)
25. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
prostaglandin
urethra
visual evaluation (BSE)
sperm cell
26. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
cow gestation
1. more cost effective - 2. powdered milk is in excess production
prostate gland
colostrum
27. 2 month growth cycle. stored in the epididymis of the bull
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
burdizzo
reason for seasonal breeding periods
Sperm growth rate
28. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
estrous
1. more cost effective - 2. powdered milk is in excess production
Dairy Cattle Gestation
behavioral signs of estrus
29. Contains and regulates the temp of the testes for sperm production
scrotum
penis sizes vs delivering methods
rectal palpation (BSE)
cow ovulation
30. 1. brain function - 2. blood flow - 3. willing female
what has to happen for males for copulation to occur
sertoli cells
Mares
sperm cell
31. Provide nourishment for the developing sperm
sow estrus cycle
sertoli cells
Sperm growth rate
mare ovulation
32. 16-20 hours
leydid or interstitial cells
cow estrus
rectal palpation (BSE)
Follical Stimulating in females
33. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
mastitis
van deferens
things to check for in a breeding soundness exam (BSE)
Grading choice
34. 26 hours after estrus begins
Size of cow in relation to the amount of milk produced
cow ovulation
ewe ovulation
ewe estrus
35. Depository for semen during insemination. where urine leaves the body
vagina
Lutinizing Hormone in males
cremaster muscle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
36. Animal which has been castrated after puberty
age and castration
sow estrus
Reasons for gestation length being affected
stag
37. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
why does the cow need fat deposits during pregnancy?
reason for seasonal breeding periods
Jersey Cow
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
38. To remove/separate testicles from animal's body before animal reaches puberty
reasons for castration
reason for seasonal breeding periods
castration
monestrous
39. 114 days
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Avg. bull specs
accessory sex glands
sow gestation
40. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
what has to happen for males for copulation to occur
Dairy calves are removed from cow at birth to...
Follical Stimulating in males
behavioral signs of estrus
41. Not under a timeline - cow can not be sold as steak
1. more cost effective - 2. powdered milk is in excess production
Grading choice
sigmoid flexure
cervix
42. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
penis proper
cryptorchid
Where livelihood is in agriculture
prostate gland
43. Birthing process (termination of gestation)
accessory sex glands
seasonally polyestrous
penis sizes vs delivering methods
Parturition
44. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
scrotal circumference (BSE)
mare's estrous cycle
Bull's fibro-elastic penis
45. Can survive ~7 days in cow. vast majority <48 hours
Jersey Cow
burdizzo
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Sperm survival specs
46. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
mare ovulation
Mares
oviducts
colostrum
47. Why does estrus happen before ovulation?
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
~1 month
pelvis
behavioral signs of estrus
48. 10-37 (21) days
mare estrus cycle
eminal vesicles
behavioral signs of estrus
libido test (BSE)
49. Look for infection - split - and rupture of the penis
sow estrus cycle
penis and prepuce observation (BSE)
4 major reasons for culling dairy cows
mare ovulation
50. 265-285 days
Sperm growth rate
Dairy Cattle Gestation
Jersey Cow
spermatogenesis