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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. 26 hours after estrus begins
mare gestation
Hormones from both the fetus and the mom.
ewe ovulation
behavioral signs of estrus
2. When are dairy cattle dehorned?
~1 month
ewe ovulation
cowper's gland
seminiferous tubules
3. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Bull's fibro-elastic penis
visual evaluation (BSE)
elastrator
Holstein Cow
4. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
dartos muscle
Holstein Cow
burdizzo
sertoli cells
5. Why Dairy calves are fed powdered milk.
cow estrus
1. more cost effective - 2. powdered milk is in excess production
sow estrus
dartos muscle
6. 1. brain function - 2. blood flow - 3. willing female
what has to happen for males for copulation to occur
effects of BST
penis sizes vs delivering methods
sigmoid flexure
7. ~60 days before calving
mare estrus
dry-off time in dairy cattle
#1 cost in production
sperm cell
8. 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
burdizzo
functions of progestrone
sigmoid flexure
Jersey Cow
9. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
vagina
uterus
eminal vesicles
Reasons for gestation length being affected
10. What makes the milk flow through the mammary glands?
libido test (BSE)
seminiferous tubules
sigmoid flexure
Blood
11. Sperm is produced here
Dairy Cattle Lactation (standard)
Hard
dry matter and water
seminiferous tubules
12. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
Sperm survival specs
estrous
rectal palpation (BSE)
Dairy Cattle Lactation (standard)
13. Luteolysis happens because of the ____________ hormone
Mares
pelvis
Holstein Cow
prostaglandin
14. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
scrotal circumference (BSE)
colostrum
reason for seasonal breeding periods
sow gestation
15. 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?
4 major reasons for culling dairy cows
sigmoid flexure
cow estrus cycle
16. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
butterfat
Jersey Cow
Dairy Cattle milking schedule
growth lost from castration methods (knife & band)
17. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
Follical Stimulating in males
pelvis
mare's estrous cycle
18. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
leydid or interstitial cells
mastitis
reasons for castration
penis and prepuce observation (BSE)
19. Not under a timeline - cow can not be sold as steak
Grading choice
Brown Swiss Cow
effects of BST
scrotum
20. 147 days
behavioral signs of estrus
Hormones from both the fetus and the mom.
mastitis
ewe gestation
21. 147 days
effects of BST
oviducts
ewe gestation
Avg. bull specs
22. Check feet and legs - look for masculine traits in build such as crest and muscling
Brown Swiss Cow
visual evaluation (BSE)
semen evaluation (BSE)
sow ovulation
23. Luteolysis happens because of the ____________ hormone
Sperm survival specs
mare gestation
pelvis
prostaglandin
24. 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
accessory sex glands
Blood
dairy cattle pregnancy check
functions of progestrone
25. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
dry matter and water
~1 month
Brown Swiss Cow
26. (male) pushes the testes outward toward the legs for a cool-down off of the body
Grading choice
cremaster muscle
mare estrus cycle
dry matter and water
27. 10-37 (21) days
mare estrus cycle
Sperm growth rate
effects of BST
eminal vesicles
28. FEED
dry-off time in dairy cattle
#1 cost in production
testis (gonads)
organs used in spermatogenesis
29. 4-6 days
uterus
testis (gonads)
prostaglandin
mare estrus
30. 14-19 (17) days
urethra
normal presentation of the fetus
ewe estrus cycle
Where livelihood is in agriculture
31. 2 month growth cycle. stored in the epididymis of the bull
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Sperm growth rate
sigmoid flexure
Reasons for gestation length being affected
32. Sperm is produced here
seminiferous tubules
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
seasonally polyestrous
sow ovulation
33. 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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34. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
4 major reasons for culling dairy cows
Avg. bull specs
1. more cost effective - 2. powdered milk is in excess production
cow estrus cycle
35. What about the sperm for a bull which has been castrated but still has testicles?
semen evaluation (BSE)
Grading choice
effects of estrogen
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
36. Animal which has been castrated after puberty
seminiferous tubules
Dairy Cattle milking schedule
sertoli cells
stag
37. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
estrous
Holstein Cow
seasonally polyestrous
seminiferous tubules
38. Urinary calculi.
vulva
eminal vesicles
kidney stones also called ________ ___________ can develop in the sigmoid flexure
normal presentation of the fetus
39. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
Sperm growth rate
Holstein Cow
sow estrus
oviducts
40. Male on one pin and female on other side
sigmoid flexure
libido test (BSE)
seasonally polyestrous
purpose of Breeding Soundness Exam (BSE) for males
41. To remove/separate testicles from animal's body before animal reaches puberty
penis sizes vs delivering methods
estrous
castration
dry matter and water
42. Parturition is controlled by...
Hormones from both the fetus and the mom.
libido test (BSE)
sow estrus
humans: stress level vs sperm
43. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Jersey Cow
penis sizes vs delivering methods
estrous
vulva
44. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Holstein Cow
butterfat
elastrator
~1 month
45. Actual heat cycle (period)
elastrator
mare's estrous cycle
estrus
colostrum
46. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
effects of estrogen
Mares
femininity of a heifer
47. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
reason for seasonal breeding periods
hormones
Reasons for gestation length being affected
48. Duct through penis that carries sperm and urine
vagina
mare gestation
urethra
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
49. Why Dairy calves are fed powdered milk.
purpose of Breeding Soundness Exam (BSE) for males
1. more cost effective - 2. powdered milk is in excess production
what has to happen for males for copulation to occur
monorchid
50. Animal which has been castrated after puberty
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
monestrous
mare estrus cycle
stag