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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. (switzerland) 2nd in size and milk production - most muscle -
cow estrus cycle
dry matter and water
accessory sex glands
Brown Swiss Cow
2. 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
functions of progestrone
sow ovulation
urethra
ewe estrus
3. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
testis (gonads)
Mares
dartos muscle
Avg. bull specs
4. (FSH) causes egg to mature in females
testis (gonads)
Follical Stimulating in females
cow gestation
mare ovulation
5. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
butterfat
Dairy calves are removed from cow at birth to...
cremaster muscle
rectal palpation (BSE)
6. Sperm is produced here
penis sizes vs delivering methods
mare gestation
uterus
seminiferous tubules
7. Contains and regulates the temp of the testes for sperm production
ewe's estrous cycle
scrotum
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
what has to happen for males for copulation to occur
8. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
mare estrus cycle
Dairy calves are removed from cow at birth to...
polyestrous
9. 1-3 days
sow estrus
seminiferous tubules
1. more cost effective - 2. powdered milk is in excess production
dairy cattle pregnancy check
10. Front feet and head first. (except for hogs and dogs)
behavioral signs of estrus
sow gestation
normal presentation of the fetus
retractor muscles
11. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Follical Stimulating in females
spermatogenesis
cremaster muscle
reason for seasonal breeding periods
12. (LH) stimulates the Leydig cells to produce testosterone
Lutinizing Hormone in males
dartos muscle
cervix
Hard
13. Animals which have many estrous periods per year (ex: cow - sow)
Culls bulls earlier (2 reasons)
polyestrous
scrotum
4 major reasons for culling dairy cows
14. Days which have increasing daylight hours
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15. Actual heat cycle (period)
Holstein Cow
Avg. bull specs
estrus
cowper's gland
16. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
cowper's gland
ewe's estrous cycle
#1 cost in production
pelvis
17. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
hypothalamus and pituitary gland
van deferens
4 major reasons for culling dairy cows
semen evaluation (BSE)
18. 1-2 days
ewe estrus
Hormones from both the fetus and the mom.
semen evaluation (BSE)
ewe ovulation
19. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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20. 2 month growth cycle. stored in the epididymis of the bull
Sperm growth rate
humans: stress level vs sperm
colostrum
monestrous
21. 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)
mare estrus cycle
cow ovulation
sow ovulation
prostate gland
22. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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23. The more stressed out the male is - the less sperm he is going to produce
effects of estrogen
1. more cost effective - 2. powdered milk is in excess production
ewe estrus
humans: stress level vs sperm
24. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
dairy cattle pregnancy check
mare gestation
penis sizes vs delivering methods
rectal palpation (BSE)
25. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
Size of cow in relation to the amount of milk produced
Bull's fibro-elastic penis
organs used in spermatogenesis
26. 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
ewe ovulation
Parturition
effects of BST
dry matter and water
27. Not under a timeline - cow can not be sold as steak
reason for seasonal breeding periods
functions of progestrone
visual evaluation (BSE)
Grading choice
28. Sperm production
mare estrus
sow gestation
sigmoid flexure
spermatogenesis
29. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
estrous
penis and prepuce observation (BSE)
semen evaluation (BSE)
Dairy Cattle milking schedule
30. 10-37 (21) days
mare estrus cycle
penis sizes vs delivering methods
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
cow estrus cycle
31. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
Dairy calves are removed from cow at birth to...
seasonally polyestrous
penis and prepuce observation (BSE)
monorchid
32. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
reasons for castration
retractor muscles
pelvis
scrotum
33. (FSH) causes egg to mature in females
Hormones from both the fetus and the mom.
Follical Stimulating in females
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
spermatogenesis
34. (LH) causes female's egg to break (her period)
Where livelihood is in agriculture
sperm cell
vagina
Lutinizing Hormone in females
35. Way to know everything is alright with the breeding male
Reasons for gestation length being affected
retractor muscles
kidney stones also called ________ ___________ can develop in the sigmoid flexure
purpose of Breeding Soundness Exam (BSE) for males
36. 19-23 (21) days
cow estrus cycle
reason for seasonal breeding periods
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Lutinizing Hormone in females
37. Help to signal hormone levels which we need both in the brain right next to each other.
monorchid
hypothalamus and pituitary gland
visual evaluation (BSE)
ewe estrus
38. Male on one pin and female on other side
organs used in spermatogenesis
libido test (BSE)
sperm cell
spermatogenesis
39. Superior genes are _______ to multiply
Hard
mare estrus cycle
Follical Stimulating in males
Avg. bull specs
40. Failure to have both testis (gonads) descend
cryptorchid
cow gestation
urethra
estrous
41. Actual heat cycle (period)
Culls bulls earlier (2 reasons)
epididymis: definition - 3 parts - 4 functions
estrus
#1 cost in production
42. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
cow ovulation
behavioral signs of estrus
oviducts
mare gestation
43. Can survive ~7 days in cow. vast majority <48 hours
urethra
Sperm survival specs
spermatogenesis
leydid or interstitial cells
44. Implies the amount of estrogen production
dartos muscle
dry matter and water
normal presentation of the fetus
femininity of a heifer
45. Why Dairy calves are fed powdered milk.
sow estrus cycle
sperm cell
Where livelihood is in agriculture
1. more cost effective - 2. powdered milk is in excess production
46. 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)
testis (gonads)
feeding a high producing dairy cow
cow estrus
spermatogenesis
47. 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.
prostaglandin
colostrum
estrus
cow estrus cycle
48. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
monestrous
Jersey Cow
Bull's fibro-elastic penis
49. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
spermatogenesis
mare estrus
sigmoid flexure
things to check for in a breeding soundness exam (BSE)
50. 26 hours after estrus begins
libido test (BSE)
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
feeding a high producing dairy cow
ewe ovulation