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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. (FSH) causes egg to mature in females
mastitis
Avg. bull specs
polyestrous
Follical Stimulating in females
2. (male) pushes the testes upward toward the body for warmth or protection
dartos muscle
reason for seasonal breeding periods
Hormones from both the fetus and the mom.
sperm cell
3. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
retractor muscles
sperm cell
monestrous
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
4. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Hormones from both the fetus and the mom.
behavioral signs of estrus
scrotum
Dairy Cattle Gestation
5. Can survive ~7 days in cow. vast majority <48 hours
6-8 weeks
polyestrous
Lutinizing Hormone in males
Sperm survival specs
6. 147 days
Sperm growth rate
butterfat
polyestrous
ewe gestation
7. 114 days
sow gestation
Dairy Cattle Gestation
colostrum
monorchid
8. Animal which has been castrated after puberty
stag
hypothalamus and pituitary gland
spermatogenesis
Dairy Cattle Gestation
9. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Grading choice
mastitis
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Holstein Cow
10. 1-2 days
Hard
ewe gestation
ewe estrus
polyestrous
11. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
sow estrus
effects of BST
Mares
12. 45-60 days after breeding; re-breed as required
Dairy Cattle Lactation (standard)
Dairy Cattle milking schedule
elastrator
dairy cattle pregnancy check
13. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
Follical Stimulating in females
estrous
Culls bulls earlier (2 reasons)
feeding a high producing dairy cow
14. Male on one pin and female on other side
mastitis
penis and prepuce observation (BSE)
seminiferous tubules
libido test (BSE)
15. 1-3 days
sow estrus
epididymis: definition - 3 parts - 4 functions
Mares
normal presentation of the fetus
16. 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
Brown Swiss Cow
cow estrus
pelvis
effects of BST
17. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Dairy Cattle Lactation (standard)
Lutinizing Hormone in females
Follical Stimulating in males
feeding a high producing dairy cow
18. 114 days
Parturition
sow gestation
Dairy Cattle Gestation
~1 month
19. Superior genes are _______ to multiply
humans: stress level vs sperm
prostaglandin
Avg. bull specs
Hard
20. Important 'landmark' during palpation
polyestrous
mare gestation
cervix
Culls bulls earlier (2 reasons)
21. 24 hours before end of estrus cycle
sow gestation
Dairy Cattle Gestation
mare ovulation
organs used in spermatogenesis
22. 19-23 (21) days
cow estrus cycle
penis and prepuce observation (BSE)
mare ovulation
elastrator
23. 4-6 days
Brown Swiss Cow
behavioral signs of estrus
mare estrus
vulva
24. 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
cremaster muscle
butterfat
effects of estrogen
25. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
normal presentation of the fetus
effects of estrogen
mastitis
Hard
26. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
Where livelihood is in agriculture
age and castration
kidney stones also called ________ ___________ can develop in the sigmoid flexure
estrous
27. When are dairy cattle dehorned?
what has to happen for males for copulation to occur
sow gestation
~1 month
leydid or interstitial cells
28. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
seasonally polyestrous
ewe gestation
estrous
penis and prepuce observation (BSE)
29. 336 days
penis sizes vs delivering methods
mare gestation
cowper's gland
stag
30. Animals which have only one estrous cycle (ex: dog - fox)
Sperm growth rate
sow gestation
monestrous
Jersey Cow
31. Failure to have both testis (gonads) descend
mare's estrous cycle
what has to happen for males for copulation to occur
feeding a high producing dairy cow
cryptorchid
32. Provide nourishment for the developing sperm
sertoli cells
retractor muscles
monorchid
hormones
33. Superior genes are _______ to multiply
effects of estrogen
spermatogenesis
Hard
rectal palpation (BSE)
34. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
cow estrus cycle
cremaster muscle
leydid or interstitial cells
accessory sex glands
35. Urinary calculi.
effects of BST
kidney stones also called ________ ___________ can develop in the sigmoid flexure
dartos muscle
monorchid
36. 26 hours after estrus begins
Reasons for gestation length being affected
pelvis
ewe ovulation
mare gestation
37. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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38. When are dairy cattle dehorned?
penis proper
~1 month
elastrator
cow estrus
39. Start of the reproductive tract for the female. located outside of the body
vulva
Dairy Cattle milking schedule
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
organs used in spermatogenesis
40. 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.
cowper's gland
retractor muscles
colostrum
dairy cattle pregnancy check
41. Days which have decreasing daylight hours
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42. To remove/separate testicles from animal's body before animal reaches puberty
Where livelihood is in agriculture
growth lost from castration methods (knife & band)
castration
mare estrus
43. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Holstein Cow
visual evaluation (BSE)
testosterone
rectal palpation (BSE)
44. 336 days
dartos muscle
prostaglandin
mare gestation
semen evaluation (BSE)
45. Days which have increasing daylight hours
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46. (LH) causes female's egg to break (her period)
femininity of a heifer
Lutinizing Hormone in females
cowper's gland
sow ovulation
47. Why does estrus happen before ovulation?
humans: stress level vs sperm
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
mastitis
sow ovulation
48. 30 hours after estrus begins
#1 cost in production
purpose of Breeding Soundness Exam (BSE) for males
cow ovulation
ewe estrus cycle
49. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
behavioral signs of estrus
burdizzo
organs used in spermatogenesis
Holstein Cow
50. The more stressed out the male is - the less sperm he is going to produce
eminal vesicles
humans: stress level vs sperm
1. more cost effective - 2. powdered milk is in excess production
Sperm survival specs