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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. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
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
epididymis: definition - 3 parts - 4 functions
Where livelihood is in agriculture
polyestrous
2. 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.
seminiferous tubules
sow estrus
colostrum
rectal palpation (BSE)
3. (switzerland) 2nd in size and milk production - most muscle -
humans: stress level vs sperm
sigmoid flexure
hormones
Brown Swiss Cow
4. Start of the reproductive tract for the female. located outside of the body
vulva
epididymis: definition - 3 parts - 4 functions
Grading choice
butterfat
5. Why Dairy calves are fed powdered milk.
Dairy Cattle milking schedule
age and castration
retractor muscles
1. more cost effective - 2. powdered milk is in excess production
6. ~305 days (altough often longer due to breeding difficulties)
dartos muscle
femininity of a heifer
Dairy Cattle Lactation (standard)
Reasons for gestation length being affected
7. Check feet and legs - look for masculine traits in build such as crest and muscling
visual evaluation (BSE)
mare gestation
van deferens
cow estrus cycle
8. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
seasonally polyestrous
sertoli cells
hypothalamus and pituitary gland
ewe estrus
9. Produce testosterone. located between the seminiferous tubules
ewe estrus cycle
Follical Stimulating in males
leydid or interstitial cells
feeding a high producing dairy cow
10. What about the sperm for a bull which has been castrated but still has testicles?
Reasons for gestation length being affected
stag
Dairy Cattle Gestation
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
11. Prevent the cow from getting an infection from the calve
Dairy calves are removed from cow at birth to...
things to check for in a breeding soundness exam (BSE)
dartos muscle
Brown Swiss Cow
12. Important 'landmark' during palpation
cervix
1. more cost effective - 2. powdered milk is in excess production
oviducts
dry-off time in dairy cattle
13. 147 days
ewe gestation
feeding a high producing dairy cow
kidney stones also called ________ ___________ can develop in the sigmoid flexure
van deferens
14. 265-285 days
Sperm survival specs
mastitis
vagina
Dairy Cattle Gestation
15. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
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
Jersey Cow
testis (gonads)
Culls bulls earlier (2 reasons)
16. 2 month growth cycle. stored in the epididymis of the bull
organs used in spermatogenesis
Sperm growth rate
sertoli cells
cowper's gland
17. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
things to check for in a breeding soundness exam (BSE)
mare gestation
burdizzo
vagina
18. 1. brain function - 2. blood flow - 3. willing female
ewe gestation
Jersey Cow
cryptorchid
what has to happen for males for copulation to occur
19. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
ewe ovulation
sow gestation
mare estrus cycle
20. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
Grading choice
Dairy Cattle Lactation (standard)
penis sizes vs delivering methods
spermatogenesis
21. Actual heat cycle (period)
testis (gonads)
cow ovulation
estrus
4 major reasons for culling dairy cows
22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
Sperm survival specs
visual evaluation (BSE)
penis proper
epididymis: definition - 3 parts - 4 functions
23. Animals which have only one estrous cycle (ex: dog - fox)
things to check for in a breeding soundness exam (BSE)
sow gestation
Culls bulls earlier (2 reasons)
monestrous
24. Help to signal hormone levels which we need both in the brain right next to each other.
cowper's gland
hypothalamus and pituitary gland
sow estrus
sow estrus cycle
25. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
Where livelihood is in agriculture
retractor muscles
dartos muscle
26. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
6-8 weeks
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
testis (gonads)
27. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
burdizzo
vagina
vagina
Brown Swiss Cow
28. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
retractor muscles
butterfat
sow estrus cycle
sow gestation
29. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
uterus
vagina
cervix
30. Check feet and legs - look for masculine traits in build such as crest and muscling
Reasons for gestation length being affected
visual evaluation (BSE)
cow estrus cycle
mare estrus
31. 283 days
castration
Sperm growth rate
cow gestation
sigmoid flexure
32. To remove/separate testicles from animal's body before animal reaches puberty
pelvis
Mares
reasons for castration
castration
33. Male on one pin and female on other side
cervix
mare ovulation
libido test (BSE)
ewe ovulation
34. ~60 days before calving
Hard
retractor muscles
dry-off time in dairy cattle
dairy cattle pregnancy check
35. Sperm production
butterfat
spermatogenesis
feeding a high producing dairy cow
organs used in spermatogenesis
36. Animal which has been castrated after puberty
cryptorchid
ewe estrus
stag
sertoli cells
37. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
testosterone
Parturition
Mares
Culls bulls earlier (2 reasons)
38. What makes the milk flow through the mammary glands?
Where livelihood is in agriculture
sow gestation
feeding a high producing dairy cow
Blood
39. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
rectal palpation (BSE)
cow ovulation
normal presentation of the fetus
eminal vesicles
40. What helps regulate spermatogenesis?
testosterone
Hormones from both the fetus and the mom.
estrus
Follical Stimulating in males
41. 147 days
ewe gestation
what has to happen for males for copulation to occur
penis and prepuce observation (BSE)
sow ovulation
42. Start of the reproductive tract for the female. located outside of the body
sow gestation
accessory sex glands
vulva
ewe estrus cycle
43. 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)
reason for seasonal breeding periods
prostate gland
pelvis
testosterone
44. Days which have increasing daylight hours
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45. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
Hormones from both the fetus and the mom.
mastitis
things to check for in a breeding soundness exam (BSE)
46. Contains and regulates the temp of the testes for sperm production
Culls bulls earlier (2 reasons)
penis proper
scrotum
seminiferous tubules
47. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
dairy cattle pregnancy check
ewe gestation
estrus
hormones
48. 114 days
Dairy Cattle Lactation (standard)
retractor muscles
Parturition
sow gestation
49. 1-3 days
cow estrus cycle
ewe estrus cycle
Where livelihood is in agriculture
sow estrus
50. Look for infection - split - and rupture of the penis
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
sow estrus cycle
cow gestation
penis and prepuce observation (BSE)