SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
Holstein Cow
functions of progestrone
growth lost from castration methods (knife & band)
effects of BST
2. 265-285 days
leydid or interstitial cells
Dairy Cattle Gestation
scrotal circumference (BSE)
ewe estrus
3. Start of the reproductive tract for the female. located outside of the body
scrotal circumference (BSE)
what has to happen for males for copulation to occur
vulva
penis proper
4. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
humans: stress level vs sperm
colostrum
elastrator
5. Milk is 15% ________ and 85% __________.
dry matter and water
sow gestation
Size of cow in relation to the amount of milk produced
monorchid
6. 30 hours after estrus begins
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
mare's estrous cycle
cow ovulation
functions of progestrone
7. (switzerland) 2nd in size and milk production - most muscle -
Brown Swiss Cow
feeding a high producing dairy cow
cow estrus cycle
cow estrus
8. Can survive ~7 days in cow. vast majority <48 hours
penis sizes vs delivering methods
Sperm survival specs
dry matter and water
hormones
9. 1. brain function - 2. blood flow - 3. willing female
dry-off time in dairy cattle
what has to happen for males for copulation to occur
Follical Stimulating in females
Dairy Cattle Gestation
10. Provide nourishment for the developing sperm
reasons for castration
Culls bulls earlier (2 reasons)
hypothalamus and pituitary gland
sertoli cells
11. When are steers and heifers weaned from bottle feeding?
Reasons for gestation length being affected
cow estrus
accessory sex glands
6-8 weeks
12. Depository for semen during insemination. where urine leaves the body
vagina
reason for seasonal breeding periods
colostrum
Hormones from both the fetus and the mom.
13. Actual heat cycle (period)
Culls bulls earlier (2 reasons)
estrus
mare estrus cycle
dry-off time in dairy cattle
14. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
sperm cell
feeding a high producing dairy cow
Reasons for gestation length being affected
penis sizes vs delivering methods
15. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Reasons for gestation length being affected
Hormones from both the fetus and the mom.
sow ovulation
reason for seasonal breeding periods
16. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Brown Swiss Cow
Size of cow in relation to the amount of milk produced
Where livelihood is in agriculture
castration
17. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
behavioral signs of estrus
age and castration
semen evaluation (BSE)
Where livelihood is in agriculture
18. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
Follical Stimulating in males
sertoli cells
estrus
Mares
19. 16-20 hours
Reasons for gestation length being affected
kidney stones also called ________ ___________ can develop in the sigmoid flexure
cow estrus
hypothalamus and pituitary gland
20. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
retractor muscles
Brown Swiss Cow
mastitis
pelvis
21. 30 hours after estrus begins
femininity of a heifer
cowper's gland
cow ovulation
ewe gestation
22. 147 days
ewe gestation
cow estrus cycle
Blood
Holstein Cow
23. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
scrotum
feeding a high producing dairy cow
4 major reasons for culling dairy cows
reason for seasonal breeding periods
24. The more stressed out the male is - the less sperm he is going to produce
vagina
age and castration
eminal vesicles
humans: stress level vs sperm
25. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
why does the cow need fat deposits during pregnancy?
humans: stress level vs sperm
spermatogenesis
Mares
26. Front feet and head first. (except for hogs and dogs)
rectal palpation (BSE)
retractor muscles
normal presentation of the fetus
polyestrous
27. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
cow estrus
elastrator
Brown Swiss Cow
age and castration
28. Prevent the cow from getting an infection from the calve
stag
mastitis
pelvis
Dairy calves are removed from cow at birth to...
29. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
vagina
Where livelihood is in agriculture
dartos muscle
spermatogenesis
30. Contains and regulates the temp of the testes for sperm production
scrotum
penis proper
penis sizes vs delivering methods
Follical Stimulating in males
31. Provide nourishment for the developing sperm
sertoli cells
leydid or interstitial cells
estrous
mare ovulation
32. 2 month growth cycle. stored in the epididymis of the bull
1. more cost effective - 2. powdered milk is in excess production
Sperm growth rate
prostate gland
Sperm survival specs
33. Birthing process (termination of gestation)
Dairy Cattle Gestation
Parturition
prostate gland
Brown Swiss Cow
34. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Avg. bull specs
scrotum
libido test (BSE)
behavioral signs of estrus
35. Luteolysis happens because of the ____________ hormone
cow estrus
#1 cost in production
prostaglandin
estrus
36. 16-20 hours
Follical Stimulating in females
van deferens
cow estrus
libido test (BSE)
37. To remove/separate testicles from animal's body before animal reaches puberty
Dairy Cattle Lactation (standard)
monestrous
polyestrous
castration
38. 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
sperm cell
ewe estrus
effects of BST
prostaglandin
39. ~305 days (altough often longer due to breeding difficulties)
organs used in spermatogenesis
4 major reasons for culling dairy cows
Dairy Cattle Lactation (standard)
effects of BST
40. 1-2 days
Sperm growth rate
growth lost from castration methods (knife & band)
ewe estrus
humans: stress level vs sperm
41. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
normal presentation of the fetus
hypothalamus and pituitary gland
rectal palpation (BSE)
42. 30-38 hours after estrus cycle begins
sow ovulation
leydid or interstitial cells
age and castration
mare ovulation
43. Animals which have many estrous periods per year (ex: cow - sow)
cow estrus cycle
polyestrous
cow estrus
cow ovulation
44. 283 days
cow gestation
normal presentation of the fetus
why does the cow need fat deposits during pregnancy?
Brown Swiss Cow
45. Parturition is controlled by...
visual evaluation (BSE)
Hard
Hormones from both the fetus and the mom.
estrus
46. ~60 days before calving
hypothalamus and pituitary gland
reason for seasonal breeding periods
penis sizes vs delivering methods
dry-off time in dairy cattle
47. Produce testosterone. located between the seminiferous tubules
leydid or interstitial cells
ewe ovulation
Follical Stimulating in females
dry matter and water
48. (FSH) causes egg to mature in females
Follical Stimulating in females
cow ovulation
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
normal presentation of the fetus
49. 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.
purpose of Breeding Soundness Exam (BSE) for males
penis proper
why does the cow need fat deposits during pregnancy?
urethra
50. What makes the milk flow through the mammary glands?
ewe's estrous cycle
reasons for castration
ewe gestation
Blood