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. What about the sperm for a bull which has been castrated but still has testicles?
why does the cow need fat deposits during pregnancy?
eminal vesicles
penis sizes vs delivering methods
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
2. Superior genes are _______ to multiply
Hard
Hormones from both the fetus and the mom.
1. more cost effective - 2. powdered milk is in excess production
humans: stress level vs sperm
3. Parturition is controlled by...
Hormones from both the fetus and the mom.
pelvis
libido test (BSE)
Follical Stimulating in males
4. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
van deferens
vulva
testosterone
~1 month
5. ~305 days (altough often longer due to breeding difficulties)
feeding a high producing dairy cow
Dairy Cattle Lactation (standard)
behavioral signs of estrus
van deferens
6. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
functions of progestrone
pelvis
Mares
7. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
dairy cattle pregnancy check
things to check for in a breeding soundness exam (BSE)
stag
Hormones from both the fetus and the mom.
8. 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.
stag
sow estrus cycle
why does the cow need fat deposits during pregnancy?
Dairy Cattle Lactation (standard)
9. (LH) causes female's egg to break (her period)
Dairy Cattle milking schedule
Hormones from both the fetus and the mom.
cow gestation
Lutinizing Hormone in females
10. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
dartos muscle
scrotal circumference (BSE)
sperm cell
4 major reasons for culling dairy cows
11. Animals which have only one estrous cycle (ex: dog - fox)
estrous
polyestrous
monestrous
Dairy Cattle Gestation
12. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
sperm cell
retractor muscles
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
Parturition
13. Provide nourishment for the developing sperm
sertoli cells
ewe estrus cycle
testosterone
4 major reasons for culling dairy cows
14. Male on one pin and female on other side
~1 month
ewe estrus
sigmoid flexure
libido test (BSE)
15. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
reasons for castration
Where livelihood is in agriculture
purpose of Breeding Soundness Exam (BSE) for males
stag
16. 1. brain function - 2. blood flow - 3. willing female
sow gestation
what has to happen for males for copulation to occur
why does the cow need fat deposits during pregnancy?
penis sizes vs delivering methods
17. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
colostrum
retractor muscles
organs used in spermatogenesis
why does the cow need fat deposits during pregnancy?
18. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
colostrum
burdizzo
eminal vesicles
mare's estrous cycle
19. Milk is 15% ________ and 85% __________.
Where livelihood is in agriculture
6-8 weeks
dry matter and water
age and castration
20. 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)
Avg. bull specs
retractor muscles
sow ovulation
prostate gland
21. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Where livelihood is in agriculture
Reasons for gestation length being affected
mare's estrous cycle
effects of estrogen
22. 265-285 days
Follical Stimulating in females
Dairy Cattle Gestation
functions of progestrone
Hard
23. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
estrous
accessory sex glands
Lutinizing Hormone in males
sperm cell
24. Sperm production
prostaglandin
organs used in spermatogenesis
spermatogenesis
6-8 weeks
25. Scar tissue plugs up chambers of udder
mastitis
dry matter and water
visual evaluation (BSE)
Dairy Cattle milking schedule
26. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
prostate gland
Grading choice
urethra
penis sizes vs delivering methods
27. Animals which have many estrous periods per year (ex: cow - sow)
rectal palpation (BSE)
ewe estrus
polyestrous
Dairy Cattle Lactation (standard)
28. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
testosterone
visual evaluation (BSE)
accessory sex glands
ewe estrus cycle
29. 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?
femininity of a heifer
eminal vesicles
burdizzo
30. Produce testosterone. located between the seminiferous tubules
leydid or interstitial cells
prostate gland
monorchid
van deferens
31. 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
Sperm survival specs
prostate gland
functions of progestrone
semen evaluation (BSE)
32. Sperm production
Where livelihood is in agriculture
behavioral signs of estrus
spermatogenesis
castration
33. Sperm is produced here
cremaster muscle
eminal vesicles
seminiferous tubules
estrous
34. Duct through penis that carries sperm and urine
behavioral signs of estrus
urethra
estrus
mare's estrous cycle
35. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
Dairy Cattle milking schedule
4 major reasons for culling dairy cows
things to check for in a breeding soundness exam (BSE)
normal presentation of the fetus
36. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
penis sizes vs delivering methods
4 major reasons for culling dairy cows
mare estrus cycle
sperm cell
37. Why does estrus happen before ovulation?
mare gestation
butterfat
eminal vesicles
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. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
spermatogenesis
Mares
Jersey Cow
cow estrus
39. Animal which has been castrated after puberty
mare's estrous cycle
stag
mare estrus
cow estrus
40. Help to signal hormone levels which we need both in the brain right next to each other.
mare estrus cycle
polyestrous
hypothalamus and pituitary gland
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
41. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
Hard
Avg. bull specs
reason for seasonal breeding periods
ewe gestation
42. When are steers and heifers weaned from bottle feeding?
effects of estrogen
6-8 weeks
mare gestation
ewe estrus
43. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
penis and prepuce observation (BSE)
hormones
age and castration
sow ovulation
44. Urinary calculi.
hypothalamus and pituitary gland
Dairy Cattle Gestation
kidney stones also called ________ ___________ can develop in the sigmoid flexure
mare estrus cycle
45. Prevent the cow from getting an infection from the calve
Dairy calves are removed from cow at birth to...
retractor muscles
cervix
#1 cost in production
46. Parturition is controlled by...
libido test (BSE)
Hormones from both the fetus and the mom.
burdizzo
1. more cost effective - 2. powdered milk is in excess production
47. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Grading choice
feeding a high producing dairy cow
testosterone
Size of cow in relation to the amount of milk produced
48. 1-3 days
sow estrus
Hard
dartos muscle
ewe's estrous cycle
49. 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
Lutinizing Hormone in females
mare estrus cycle
ewe gestation
effects of BST
50. 10-37 (21) days
Avg. bull specs
mare estrus cycle
sow ovulation
ewe ovulation